Merge "Re-enable -Wall and -Werror that were lost in a merge"
diff --git a/Android.mk b/Android.mk
index 2a94f3a..d9e4455 100644
--- a/Android.mk
+++ b/Android.mk
@@ -199,6 +199,7 @@
 	core/java/android/os/INetworkActivityListener.aidl \
 	core/java/android/os/INetworkManagementService.aidl \
 	core/java/android/os/IPermissionController.aidl \
+	core/java/android/os/IProcessInfoService.aidl \
 	core/java/android/os/IPowerManager.aidl \
 	core/java/android/os/IRemoteCallback.aidl \
 	core/java/android/os/ISchedulingPolicyService.aidl \
diff --git a/api/current.txt b/api/current.txt
index 144f292..ed80e38 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -547,6 +547,7 @@
     field public static final int expandableListViewWhiteStyle = 16843446; // 0x10102b6
     field public static final int exported = 16842768; // 0x1010010
     field public static final int extraTension = 16843371; // 0x101026b
+    field public static final int extractNativeLibs = 16843990; // 0x10104d6
     field public static final int factor = 16843219; // 0x10101d3
     field public static final int fadeDuration = 16843384; // 0x1010278
     field public static final int fadeEnabled = 16843390; // 0x101027e
@@ -8368,6 +8369,7 @@
     field public static final int FLAG_ALLOW_TASK_REPARENTING = 32; // 0x20
     field public static final int FLAG_DEBUGGABLE = 2; // 0x2
     field public static final int FLAG_EXTERNAL_STORAGE = 262144; // 0x40000
+    field public static final int FLAG_EXTRACT_NATIVE_LIBS = 268435456; // 0x10000000
     field public static final int FLAG_FACTORY_TEST = 16; // 0x10
     field public static final int FLAG_FULL_BACKUP_ONLY = 67108864; // 0x4000000
     field public static final int FLAG_HAS_CODE = 4; // 0x4
@@ -17515,7 +17517,7 @@
     method public static android.net.http.HttpResponseCache getInstalled();
     method public int getNetworkCount();
     method public int getRequestCount();
-    method public static android.net.http.HttpResponseCache install(java.io.File, long) throws java.io.IOException;
+    method public static synchronized android.net.http.HttpResponseCache install(java.io.File, long) throws java.io.IOException;
     method public long maxSize();
     method public java.net.CacheRequest put(java.net.URI, java.net.URLConnection) throws java.io.IOException;
     method public long size();
@@ -41519,7 +41521,7 @@
     method public static double nextUp(double);
     method public static float nextUp(float);
     method public static double pow(double, double);
-    method public static synchronized double random();
+    method public static double random();
     method public static double rint(double);
     method public static long round(double);
     method public static int round(float);
diff --git a/api/system-current.txt b/api/system-current.txt
index 7ab0e48..8f1b8b2 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -617,6 +617,7 @@
     field public static final int expandableListViewWhiteStyle = 16843446; // 0x10102b6
     field public static final int exported = 16842768; // 0x1010010
     field public static final int extraTension = 16843371; // 0x101026b
+    field public static final int extractNativeLibs = 16843990; // 0x10104d6
     field public static final int factor = 16843219; // 0x10101d3
     field public static final int fadeDuration = 16843384; // 0x1010278
     field public static final int fadeEnabled = 16843390; // 0x101027e
@@ -8616,6 +8617,7 @@
     field public static final int FLAG_ALLOW_TASK_REPARENTING = 32; // 0x20
     field public static final int FLAG_DEBUGGABLE = 2; // 0x2
     field public static final int FLAG_EXTERNAL_STORAGE = 262144; // 0x40000
+    field public static final int FLAG_EXTRACT_NATIVE_LIBS = 268435456; // 0x10000000
     field public static final int FLAG_FACTORY_TEST = 16; // 0x10
     field public static final int FLAG_FULL_BACKUP_ONLY = 67108864; // 0x4000000
     field public static final int FLAG_HAS_CODE = 4; // 0x4
@@ -18843,7 +18845,7 @@
     method public static android.net.http.HttpResponseCache getInstalled();
     method public int getNetworkCount();
     method public int getRequestCount();
-    method public static android.net.http.HttpResponseCache install(java.io.File, long) throws java.io.IOException;
+    method public static synchronized android.net.http.HttpResponseCache install(java.io.File, long) throws java.io.IOException;
     method public long maxSize();
     method public java.net.CacheRequest put(java.net.URI, java.net.URLConnection) throws java.io.IOException;
     method public long size();
@@ -44055,7 +44057,7 @@
     method public static double nextUp(double);
     method public static float nextUp(float);
     method public static double pow(double, double);
-    method public static synchronized double random();
+    method public static double random();
     method public static double rint(double);
     method public static long round(double);
     method public static int round(float);
diff --git a/cmds/app_process/app_main.cpp b/cmds/app_process/app_main.cpp
index c86fd53..c5af992 100644
--- a/cmds/app_process/app_main.cpp
+++ b/cmds/app_process/app_main.cpp
@@ -7,6 +7,12 @@
 
 #define LOG_TAG "appproc"
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/prctl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 #include <binder/IPCThreadState.h>
 #include <binder/ProcessState.h>
 #include <utils/Log.h>
@@ -17,11 +23,6 @@
 #include <android_runtime/AndroidRuntime.h>
 #include <private/android_filesystem_config.h>  // for AID_SYSTEM
 
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/prctl.h>
-
 namespace android {
 
 static void app_usage()
diff --git a/cmds/idmap/scan.cpp b/cmds/idmap/scan.cpp
index 197e36b..84158d3 100644
--- a/cmds/idmap/scan.cpp
+++ b/cmds/idmap/scan.cpp
@@ -1,3 +1,6 @@
+#include <dirent.h>
+#include <sys/stat.h>
+
 #include "idmap.h"
 
 #include <UniquePtr.h>
@@ -9,8 +12,6 @@
 #include <utils/String16.h>
 #include <utils/String8.h>
 
-#include <dirent.h>
-
 #define NO_OVERLAY_TAG (-1000)
 
 using namespace android;
diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 7a636db..c6ffef6 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -256,6 +256,9 @@
     /** @hide User operation call: given user id is the current user, can't be stopped. */
     public static final int USER_OP_IS_CURRENT = -2;
 
+    /** @hide Process does not exist. */
+    public static final int PROCESS_STATE_NONEXISTENT = -1;
+
     /** @hide Process is a persistent system process. */
     public static final int PROCESS_STATE_PERSISTENT = 0;
 
diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index bdd9e41..9269f60 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -97,7 +97,7 @@
 import android.view.Window;
 import android.view.WindowManager;
 import android.view.WindowManagerGlobal;
-import android.renderscript.RenderScript;
+import android.renderscript.RenderScriptCacheDir;
 import android.security.AndroidKeyStoreProvider;
 
 import com.android.internal.app.IVoiceInteractor;
@@ -257,18 +257,21 @@
         }
     }
 
+    static final class AcquiringProviderRecord {
+        IActivityManager.ContentProviderHolder holder;
+        boolean acquiring = true;
+        int requests = 1;
+    }
+
     // The lock of mProviderMap protects the following variables.
-    final ArrayMap<ProviderKey, ProviderClientRecord> mProviderMap
-        = new ArrayMap<ProviderKey, ProviderClientRecord>();
-    final ArrayMap<IBinder, ProviderRefCount> mProviderRefCountMap
-        = new ArrayMap<IBinder, ProviderRefCount>();
-    final ArrayMap<IBinder, ProviderClientRecord> mLocalProviders
-        = new ArrayMap<IBinder, ProviderClientRecord>();
-    final ArrayMap<ComponentName, ProviderClientRecord> mLocalProvidersByName
-            = new ArrayMap<ComponentName, ProviderClientRecord>();
+    final ArrayMap<ProviderKey, ProviderClientRecord> mProviderMap = new ArrayMap<>();
+    final ArrayMap<ProviderKey, AcquiringProviderRecord> mAcquiringProviderMap = new ArrayMap<>();
+    final ArrayMap<IBinder, ProviderRefCount> mProviderRefCountMap = new ArrayMap<>();
+    final ArrayMap<IBinder, ProviderClientRecord> mLocalProviders = new ArrayMap<>();
+    final ArrayMap<ComponentName, ProviderClientRecord> mLocalProvidersByName = new ArrayMap<>();
 
     final ArrayMap<Activity, ArrayList<OnActivityPausedListener>> mOnPauseListeners
-        = new ArrayMap<Activity, ArrayList<OnActivityPausedListener>>();
+            = new ArrayMap<>();
 
     final GcIdler mGcIdler = new GcIdler();
     boolean mGcIdlerScheduled = false;
@@ -345,7 +348,7 @@
         }
     }
 
-    final class ProviderClientRecord {
+    static final class ProviderClientRecord {
         final String[] mNames;
         final IContentProvider mProvider;
         final ContentProvider mLocalProvider;
@@ -3184,7 +3187,7 @@
                 if (cv == null) {
                     mThumbnailCanvas = cv = new Canvas();
                 }
-    
+
                 cv.setBitmap(thumbnail);
                 if (!r.activity.onCreateThumbnail(thumbnail, cv)) {
                     mAvailThumbnailBitmap = thumbnail;
@@ -3482,12 +3485,12 @@
 
     private void handleWindowVisibility(IBinder token, boolean show) {
         ActivityClientRecord r = mActivities.get(token);
-        
+
         if (r == null) {
             Log.w(TAG, "handleWindowVisibility: no activity for token " + token);
             return;
         }
-        
+
         if (!show && !r.stopped) {
             performStopActivityInner(r, null, show, false);
         } else if (show && r.stopped) {
@@ -3915,10 +3918,10 @@
                 }
             }
         }
-        
+
         if (DEBUG_CONFIGURATION) Slog.v(TAG, "Relaunching activity "
                 + tmp.token + ": changedConfig=" + changedConfig);
-        
+
         // If there was a pending configuration change, execute it first.
         if (changedConfig != null) {
             mCurDefaultDisplayDpi = changedConfig.densityDpi;
@@ -4115,7 +4118,7 @@
             if (config == null) {
                 return;
             }
-            
+
             if (DEBUG_CONFIGURATION) Slog.v(TAG, "Handle configuration changed: "
                     + config);
 
@@ -4163,7 +4166,7 @@
 
         if (DEBUG_CONFIGURATION) Slog.v(TAG, "Handle activity config changed: "
                 + r.activityInfo.name);
-        
+
         performConfigurationChanged(r.activity, mCompatConfiguration);
 
         freeTextLayoutCachesIfNeeded(r.activity.mCurrentConfig.diff(mCompatConfiguration));
@@ -4244,7 +4247,7 @@
         ApplicationPackageManager.handlePackageBroadcast(cmd, packages,
                 hasPkgInfo);
     }
-        
+
     final void handleLowMemory() {
         ArrayList<ComponentCallbacks2> callbacks = collectComponentCallbacks(true, null);
 
@@ -4291,10 +4294,10 @@
             String[] packages = getPackageManager().getPackagesForUid(uid);
 
             // If there are several packages in this application we won't
-            // initialize the graphics disk caches 
+            // initialize the graphics disk caches
             if (packages != null && packages.length == 1) {
                 HardwareRenderer.setupDiskCache(cacheDir);
-                RenderScript.setupDiskCache(cacheDir);
+                RenderScriptCacheDir.setupDiskCache(cacheDir);
             }
         } catch (RemoteException e) {
             // Ignore
@@ -4648,22 +4651,57 @@
 
     public final IContentProvider acquireProvider(
             Context c, String auth, int userId, boolean stable) {
-        final IContentProvider provider = acquireExistingProvider(c, auth, userId, stable);
+        final ProviderKey key = new ProviderKey(auth, userId);
+        final IContentProvider provider = acquireExistingProvider(c, key, stable);
         if (provider != null) {
             return provider;
         }
+        AcquiringProviderRecord r;
+        boolean first = false;
+        synchronized (mAcquiringProviderMap) {
+            r = mAcquiringProviderMap.get(key);
+            if (r == null) {
+                r = new AcquiringProviderRecord();
+                mAcquiringProviderMap.put(key, r);
+                first = true;
+            } else {
+                r.requests++;
+            }
+        }
 
-        // There is a possible race here.  Another thread may try to acquire
-        // the same provider at the same time.  When this happens, we want to ensure
-        // that the first one wins.
-        // Note that we cannot hold the lock while acquiring and installing the
-        // provider since it might take a long time to run and it could also potentially
-        // be re-entrant in the case where the provider is in the same process.
         IActivityManager.ContentProviderHolder holder = null;
-        try {
-            holder = ActivityManagerNative.getDefault().getContentProvider(
-                    getApplicationThread(), auth, userId, stable);
-        } catch (RemoteException ex) {
+        if (first) {
+            // Multiple threads may try to acquire the same provider at the same time.
+            // When this happens, we only let the first one really gets provider.
+            // Other threads just wait for its result.
+            // Note that we cannot hold the lock while acquiring and installing the
+            // provider since it might take a long time to run and it could also potentially
+            // be re-entrant in the case where the provider is in the same process.
+            try {
+                holder = ActivityManagerNative.getDefault().getContentProvider(
+                        getApplicationThread(), auth, userId, stable);
+            } catch (RemoteException ex) {
+            }
+            synchronized (r) {
+                r.holder = holder;
+                r.acquiring = false;
+                r.notifyAll();
+            }
+        } else {
+            synchronized (r) {
+                while (r.acquiring) {
+                    try {
+                        r.wait();
+                    } catch (InterruptedException e) {
+                    }
+                }
+                holder = r.holder;
+            }
+        }
+        synchronized (mAcquiringProviderMap) {
+            if (--r.requests == 0) {
+                mAcquiringProviderMap.remove(key);
+            }
         }
         if (holder == null) {
             Slog.e(TAG, "Failed to find provider info for " + auth);
@@ -4747,8 +4785,12 @@
 
     public final IContentProvider acquireExistingProvider(
             Context c, String auth, int userId, boolean stable) {
+        return acquireExistingProvider(c, new ProviderKey(auth, userId), stable);
+    }
+
+    final IContentProvider acquireExistingProvider(
+            Context c, ProviderKey key, boolean stable) {
         synchronized (mProviderMap) {
-            final ProviderKey key = new ProviderKey(auth, userId);
             final ProviderClientRecord pr = mProviderMap.get(key);
             if (pr == null) {
                 return null;
@@ -4759,7 +4801,7 @@
             if (!jBinder.isBinderAlive()) {
                 // The hosting process of the provider has died; we can't
                 // use this one.
-                Log.i(TAG, "Acquiring provider " + auth + " for user " + userId
+                Log.i(TAG, "Acquiring provider " + key.authority + " for user " +  key.userId
                         + ": existing object's process dead");
                 handleUnstableProviderDiedLocked(jBinder, true);
                 return null;
@@ -5081,18 +5123,12 @@
                     if (DEBUG_PROVIDER) {
                         Slog.v(TAG, "installProvider: lost the race, updating ref count");
                     }
-                    // We need to transfer our new reference to the existing
-                    // ref count, releasing the old one...  but only if
-                    // release is needed (that is, it is not running in the
-                    // system process).
+                    // The provider has already been installed, so we need
+                    // to increase reference count to the existing one, but
+                    // only if release is needed (that is, it is not running
+                    // in the system process or local to the process).
                     if (!noReleaseNeeded) {
                         incProviderRefLocked(prc, stable);
-                        try {
-                            ActivityManagerNative.getDefault().removeContentProvider(
-                                    holder.connection, stable);
-                        } catch (RemoteException e) {
-                            //do nothing content provider object is dead any way
-                        }
                     }
                 } else {
                     ProviderClientRecord client = installProviderAuthoritiesLocked(
@@ -5186,7 +5222,7 @@
                         if (mPendingConfiguration == null ||
                                 mPendingConfiguration.isOtherSeqNewer(newConfig)) {
                             mPendingConfiguration = newConfig;
-                            
+
                             sendMessage(H.CONFIGURATION_CHANGED, newConfig);
                         }
                     }
diff --git a/core/java/android/app/ApplicationErrorReport.java b/core/java/android/app/ApplicationErrorReport.java
index 6c2511e..8692336 100644
--- a/core/java/android/app/ApplicationErrorReport.java
+++ b/core/java/android/app/ApplicationErrorReport.java
@@ -235,10 +235,13 @@
         dest.writeString(processName);
         dest.writeLong(time);
         dest.writeInt(systemApp ? 1 : 0);
+        dest.writeInt(crashInfo != null ? 1 : 0);
 
         switch (type) {
             case TYPE_CRASH:
-                crashInfo.writeToParcel(dest, flags);
+                if (crashInfo != null) {
+                    crashInfo.writeToParcel(dest, flags);
+                }
                 break;
             case TYPE_ANR:
                 anrInfo.writeToParcel(dest, flags);
@@ -259,10 +262,11 @@
         processName = in.readString();
         time = in.readLong();
         systemApp = in.readInt() == 1;
+        boolean hasCrashInfo = in.readInt() == 1;
 
         switch (type) {
             case TYPE_CRASH:
-                crashInfo = new CrashInfo(in);
+                crashInfo = hasCrashInfo ? new CrashInfo(in) : null;
                 anrInfo = null;
                 batteryInfo = null;
                 runningServiceInfo = null;
diff --git a/core/java/android/content/pm/ApplicationInfo.java b/core/java/android/content/pm/ApplicationInfo.java
index 05c19db..4a087da 100644
--- a/core/java/android/content/pm/ApplicationInfo.java
+++ b/core/java/android/content/pm/ApplicationInfo.java
@@ -346,6 +346,11 @@
     public static final int FLAG_USES_CLEARTEXT_TRAFFIC = 1<<27;
 
     /**
+     * When set installer extracts native libs from .apk files.
+     */
+    public static final int FLAG_EXTRACT_NATIVE_LIBS = 1<<28;
+
+    /**
      * Value for {@link #flags}: true if code from this application will need to be
      * loaded into other applications' processes. On devices that support multiple
      * instruction sets, this implies the code might be loaded into a process that's
@@ -900,6 +905,20 @@
     /**
      * @hide
      */
+    public boolean isSystemApp() {
+        return (flags & ApplicationInfo.FLAG_SYSTEM) != 0;
+    }
+
+    /**
+     * @hide
+     */
+    public boolean isUpdatedSystemApp() {
+        return (flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
+    }
+
+    /**
+     * @hide
+     */
     @Override protected ApplicationInfo getApplicationInfo() {
         return this;
     }
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index 4952ba1..53aa6ff 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -268,6 +268,7 @@
 
         public final boolean coreApp;
         public final boolean multiArch;
+        public final boolean extractNativeLibs;
 
         public PackageLite(String codePath, ApkLite baseApk, String[] splitNames,
                 String[] splitCodePaths, int[] splitRevisionCodes) {
@@ -283,6 +284,7 @@
             this.splitRevisionCodes = splitRevisionCodes;
             this.coreApp = baseApk.coreApp;
             this.multiArch = baseApk.multiArch;
+            this.extractNativeLibs = baseApk.extractNativeLibs;
         }
 
         public List<String> getAllCodePaths() {
@@ -309,10 +311,12 @@
         public final Signature[] signatures;
         public final boolean coreApp;
         public final boolean multiArch;
+        public final boolean extractNativeLibs;
 
         public ApkLite(String codePath, String packageName, String splitName, int versionCode,
                 int revisionCode, int installLocation, List<VerifierInfo> verifiers,
-                Signature[] signatures, boolean coreApp, boolean multiArch) {
+                Signature[] signatures, boolean coreApp, boolean multiArch,
+                boolean extractNativeLibs) {
             this.codePath = codePath;
             this.packageName = packageName;
             this.splitName = splitName;
@@ -323,6 +327,7 @@
             this.signatures = signatures;
             this.coreApp = coreApp;
             this.multiArch = multiArch;
+            this.extractNativeLibs = extractNativeLibs;
         }
     }
 
@@ -1269,6 +1274,7 @@
         int revisionCode = 0;
         boolean coreApp = false;
         boolean multiArch = false;
+        boolean extractNativeLibs = true;
 
         for (int i = 0; i < attrs.getAttributeCount(); i++) {
             final String attr = attrs.getAttributeName(i);
@@ -1307,14 +1313,17 @@
                     final String attr = attrs.getAttributeName(i);
                     if ("multiArch".equals(attr)) {
                         multiArch = attrs.getAttributeBooleanValue(i, false);
-                        break;
+                    }
+                    if ("extractNativeLibs".equals(attr)) {
+                        extractNativeLibs = attrs.getAttributeBooleanValue(i, true);
                     }
                 }
             }
         }
 
         return new ApkLite(codePath, packageSplit.first, packageSplit.second, versionCode,
-                revisionCode, installLocation, verifiers, signatures, coreApp, multiArch);
+                revisionCode, installLocation, verifiers, signatures, coreApp, multiArch,
+                extractNativeLibs);
     }
 
     /**
@@ -2567,6 +2576,12 @@
             ai.flags |= ApplicationInfo.FLAG_MULTIARCH;
         }
 
+        if (sa.getBoolean(
+                com.android.internal.R.styleable.AndroidManifestApplication_extractNativeLibs,
+                true)) {
+            ai.flags |= ApplicationInfo.FLAG_EXTRACT_NATIVE_LIBS;
+        }
+
         String str;
         str = sa.getNonConfigurationString(
                 com.android.internal.R.styleable.AndroidManifestApplication_permission, 0);
@@ -4444,6 +4459,20 @@
             return applicationInfo.isForwardLocked();
         }
 
+        /**
+         * @hide
+         */
+        public boolean isSystemApp() {
+            return applicationInfo.isSystemApp();
+        }
+
+        /**
+         * @hide
+         */
+        public boolean isUpdatedSystemApp() {
+            return applicationInfo.isUpdatedSystemApp();
+        }
+
         public String toString() {
             return "Package{"
                 + Integer.toHexString(System.identityHashCode(this))
diff --git a/core/java/android/inputmethodservice/ExtractEditLayout.java b/core/java/android/inputmethodservice/ExtractEditLayout.java
index 5696839..e902443 100644
--- a/core/java/android/inputmethodservice/ExtractEditLayout.java
+++ b/core/java/android/inputmethodservice/ExtractEditLayout.java
@@ -163,6 +163,8 @@
             mCallback.onDestroyActionMode(this);
             mCallback = null;
 
+            mMenu.close();
+
             mExtractActionButton.setVisibility(VISIBLE);
             mEditButton.setVisibility(INVISIBLE);
 
diff --git a/core/java/android/net/Uri.java b/core/java/android/net/Uri.java
index 2099c3f..fb2f445 100644
--- a/core/java/android/net/Uri.java
+++ b/core/java/android/net/Uri.java
@@ -384,6 +384,11 @@
                     }
                 }
                 return builder.toString();
+            } else if (scheme.equalsIgnoreCase("http") || scheme.equalsIgnoreCase("https")
+                    || scheme.equalsIgnoreCase("ftp")) {
+                ssp = "//" + ((getHost() != null) ? getHost() : "")
+                        + ((getPort() != -1) ? (":" + getPort()) : "")
+                        + "/...";
             }
         }
         // Not a sensitive scheme, but let's still be conservative about
diff --git a/core/java/android/os/IProcessInfoService.aidl b/core/java/android/os/IProcessInfoService.aidl
new file mode 100644
index 0000000..c98daa2
--- /dev/null
+++ b/core/java/android/os/IProcessInfoService.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.os;
+
+/** {@hide} */
+interface IProcessInfoService
+{
+    /**
+     * For each PID in the given input array, write the current process state
+     * for that process into the output array, or ActivityManager.PROCESS_STATE_NONEXISTENT
+     * to indicate that no process with the given PID exists.
+     */
+    void getProcessStatesFromPids(in int[] pids, out int[] states);
+}
+
diff --git a/core/java/android/preference/Preference.java b/core/java/android/preference/Preference.java
index 0224c73..d989cd1 100644
--- a/core/java/android/preference/Preference.java
+++ b/core/java/android/preference/Preference.java
@@ -1426,7 +1426,7 @@
     protected boolean persistString(String value) {
         if (shouldPersist()) {
             // Shouldn't store null
-            if (value == getPersistedString(null)) {
+            if (TextUtils.equals(value, getPersistedString(null))) {
                 // It's already there, so the same as persisting
                 return true;
             }
diff --git a/core/java/android/security/IKeystoreService.aidl b/core/java/android/security/IKeystoreService.aidl
index 14b5748..579cdbe 100644
--- a/core/java/android/security/IKeystoreService.aidl
+++ b/core/java/android/security/IKeystoreService.aidl
@@ -73,4 +73,6 @@
     OperationResult update(IBinder token, in KeymasterArguments params, in byte[] input);
     OperationResult finish(IBinder token, in KeymasterArguments params, in byte[] signature);
     int abort(IBinder handle);
+    boolean isOperationAuthorized(IBinder token);
+    int addAuthToken(in byte[] authToken);
 }
diff --git a/core/java/android/security/keymaster/KeymasterDefs.java b/core/java/android/security/keymaster/KeymasterDefs.java
index e653b74..6176399 100644
--- a/core/java/android/security/keymaster/KeymasterDefs.java
+++ b/core/java/android/security/keymaster/KeymasterDefs.java
@@ -16,6 +16,9 @@
 
 package android.security.keymaster;
 
+import java.util.HashMap;
+import java.util.Map;
+
 /**
  * Class tracking all the keymaster enum values needed for the binder API to keystore.
  * This must be kept in sync with hardware/libhardware/include/hardware/keymaster_defs.h
@@ -168,6 +171,9 @@
     public static final int KM_KEY_FORMAT_PKCS12 = 2;
     public static final int KM_KEY_FORMAT_RAW = 3;
 
+    // User authenticators.
+    public static final int HW_AUTH_PASSWORD = 1 << 0;
+
     // Error codes.
     public static final int KM_ERROR_OK = 0;
     public static final int KM_ERROR_ROOT_OF_TRUST_ALREADY_SET = -1;
@@ -178,7 +184,7 @@
     public static final int KM_ERROR_UNSUPPORTED_KEY_SIZE = -6;
     public static final int KM_ERROR_UNSUPPORTED_BLOCK_MODE = -7;
     public static final int KM_ERROR_INCOMPATIBLE_BLOCK_MODE = -8;
-    public static final int KM_ERROR_UNSUPPORTED_TAG_LENGTH = -9;
+    public static final int KM_ERROR_UNSUPPORTED_MAC_LENGTH = -9;
     public static final int KM_ERROR_UNSUPPORTED_PADDING_MODE = -10;
     public static final int KM_ERROR_INCOMPATIBLE_PADDING_MODE = -11;
     public static final int KM_ERROR_UNSUPPORTED_DIGEST = -12;
@@ -224,7 +230,54 @@
     public static final int KM_ERROR_VERSION_MISMATCH = -101;
     public static final int KM_ERROR_UNKNOWN_ERROR = -1000;
 
+    public static final Map<Integer, String> sErrorCodeToString = new HashMap<Integer, String>();
+    static {
+        sErrorCodeToString.put(KM_ERROR_OK, "OK");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_PURPOSE, "Unsupported purpose");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_PURPOSE, "Incompatible purpose");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_ALGORITHM, "Unsupported algorithm");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_ALGORITHM, "Incompatible algorithm");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_KEY_SIZE, "Unsupported key size");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_BLOCK_MODE, "Unsupported block mode");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_BLOCK_MODE, "Incompatible block mode");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_MAC_LENGTH,
+                "Unsupported MAC or authentication tag length");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_PADDING_MODE, "Unsupported padding mode");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_PADDING_MODE, "Incompatible padding mode");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_DIGEST, "Unsupported digest");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_DIGEST, "Incompatible digest");
+        sErrorCodeToString.put(KM_ERROR_INVALID_EXPIRATION_TIME, "Invalid expiration time");
+        sErrorCodeToString.put(KM_ERROR_INVALID_USER_ID, "Invalid user ID");
+        sErrorCodeToString.put(KM_ERROR_INVALID_AUTHORIZATION_TIMEOUT,
+                "Invalid user authorization timeout");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_KEY_FORMAT, "Unsupported key format");
+        sErrorCodeToString.put(KM_ERROR_INCOMPATIBLE_KEY_FORMAT, "Incompatible key format");
+        sErrorCodeToString.put(KM_ERROR_INVALID_INPUT_LENGTH, "Invalid input length");
+        sErrorCodeToString.put(KM_ERROR_KEY_NOT_YET_VALID, "Key not yet valid");
+        sErrorCodeToString.put(KM_ERROR_KEY_EXPIRED, "Key expired");
+        sErrorCodeToString.put(KM_ERROR_KEY_USER_NOT_AUTHENTICATED, "Key user not authenticated");
+        sErrorCodeToString.put(KM_ERROR_INVALID_OPERATION_HANDLE, "Invalid operation handle");
+        sErrorCodeToString.put(KM_ERROR_VERIFICATION_FAILED, "Signature/MAC verification failed");
+        sErrorCodeToString.put(KM_ERROR_TOO_MANY_OPERATIONS, "Too many operations");
+        sErrorCodeToString.put(KM_ERROR_INVALID_KEY_BLOB, "Invalid key blob");
+        sErrorCodeToString.put(KM_ERROR_INVALID_ARGUMENT, "Invalid argument");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_TAG, "Unsupported tag");
+        sErrorCodeToString.put(KM_ERROR_INVALID_TAG, "Invalid tag");
+        sErrorCodeToString.put(KM_ERROR_MEMORY_ALLOCATION_FAILED, "Memory allocation failed");
+        sErrorCodeToString.put(KM_ERROR_UNSUPPORTED_EC_FIELD, "Unsupported EC field");
+        sErrorCodeToString.put(KM_ERROR_UNIMPLEMENTED, "Not implemented");
+        sErrorCodeToString.put(KM_ERROR_UNKNOWN_ERROR, "Unknown error");
+    }
+
     public static int getTagType(int tag) {
         return tag & (0xF << 28);
     }
+
+    public static String getErrorMessage(int errorCode) {
+        String result = sErrorCodeToString.get(errorCode);
+        if (result != null) {
+            return result;
+        }
+        return String.valueOf(errorCode);
+    }
 }
diff --git a/core/java/android/security/keymaster/OperationResult.java b/core/java/android/security/keymaster/OperationResult.java
index ad54c96..7cc43d3 100644
--- a/core/java/android/security/keymaster/OperationResult.java
+++ b/core/java/android/security/keymaster/OperationResult.java
@@ -30,6 +30,7 @@
 public class OperationResult implements Parcelable {
     public final int resultCode;
     public final IBinder token;
+    public final long operationHandle;
     public final int inputConsumed;
     public final byte[] output;
 
@@ -47,6 +48,7 @@
     protected OperationResult(Parcel in) {
         resultCode = in.readInt();
         token = in.readStrongBinder();
+        operationHandle = in.readLong();
         inputConsumed = in.readInt();
         output = in.createByteArray();
     }
@@ -60,6 +62,7 @@
     public void writeToParcel(Parcel out, int flags) {
         out.writeInt(resultCode);
         out.writeStrongBinder(token);
+        out.writeLong(operationHandle);
         out.writeInt(inputConsumed);
         out.writeByteArray(output);
     }
diff --git a/core/java/android/service/voice/VoiceInteractionSession.java b/core/java/android/service/voice/VoiceInteractionSession.java
index 749f813..d751266 100644
--- a/core/java/android/service/voice/VoiceInteractionSession.java
+++ b/core/java/android/service/voice/VoiceInteractionSession.java
@@ -436,11 +436,7 @@
 
     Request removeRequest(IBinder reqInterface) {
         synchronized (this) {
-            Request req = mActiveRequests.get(reqInterface);
-            if (req != null) {
-                mActiveRequests.remove(req);
-            }
-            return req;
+            return mActiveRequests.remove(reqInterface);
         }
     }
 
diff --git a/core/java/android/text/SpanSet.java b/core/java/android/text/SpanSet.java
index 3ca6033..00f1493 100644
--- a/core/java/android/text/SpanSet.java
+++ b/core/java/android/text/SpanSet.java
@@ -17,6 +17,7 @@
 package android.text;
 
 import java.lang.reflect.Array;
+import java.util.Arrays;
 
 /**
  * A cached set of spans. Caches the result of {@link Spanned#getSpans(int, int, Class)} and then
@@ -54,6 +55,7 @@
             spanFlags = new int[length];
         }
 
+        int prevNumberOfSpans = numberOfSpans;
         numberOfSpans = 0;
         for (int i = 0; i < length; i++) {
             final E span = allSpans[i];
@@ -71,6 +73,12 @@
 
             numberOfSpans++;
         }
+
+        // cleanup extra spans left over from previous init() call
+        if (numberOfSpans < prevNumberOfSpans) {
+            // prevNumberofSpans was > 0, therefore spans != null
+            Arrays.fill(spans, numberOfSpans, prevNumberOfSpans, null);
+        }
     }
 
     /**
@@ -103,9 +111,8 @@
      * Removes all internal references to the spans to avoid memory leaks.
      */
     public void recycle() {
-        // The spans array is guaranteed to be not null when numberOfSpans is > 0
-        for (int i = 0; i < numberOfSpans; i++) {
-            spans[i] = null; // prevent a leak: no reference kept when TextLine is recycled
+        if (spans != null) {
+            Arrays.fill(spans, 0, numberOfSpans, null);
         }
     }
 }
diff --git a/core/java/android/view/ViewDebug.java b/core/java/android/view/ViewDebug.java
index 50e64c6..a237afd 100644
--- a/core/java/android/view/ViewDebug.java
+++ b/core/java/android/view/ViewDebug.java
@@ -1005,31 +1005,23 @@
             return fields;
         }
 
-        final ArrayList<Field> declaredFields = new ArrayList();
-        klass.getDeclaredFieldsUnchecked(false, declaredFields);
-
-        final ArrayList<Field> foundFields = new ArrayList<Field>();
-        final int count = declaredFields.size();
-        for (int i = 0; i < count; i++) {
-            final Field field = declaredFields.get(i);
-
-            // Ensure the field type can be resolved.
-            try {
-                field.getType();
-            } catch (NoClassDefFoundError e) {
-                continue;
+        try {
+            final Field[] declaredFields = klass.getDeclaredFieldsUnchecked(false);
+            final ArrayList<Field> foundFields = new ArrayList<Field>();
+            for (final Field field : declaredFields) {
+              // Fields which can't be resolved have a null type.
+              if (field.getType() != null && field.isAnnotationPresent(ExportedProperty.class)) {
+                  field.setAccessible(true);
+                  foundFields.add(field);
+                  sAnnotations.put(field, field.getAnnotation(ExportedProperty.class));
+              }
             }
-
-            if (field.isAnnotationPresent(ExportedProperty.class)) {
-                field.setAccessible(true);
-                foundFields.add(field);
-                sAnnotations.put(field, field.getAnnotation(ExportedProperty.class));
-            }
+            fields = foundFields.toArray(new Field[foundFields.size()]);
+            map.put(klass, fields);
+        } catch (NoClassDefFoundError e) {
+            throw new AssertionError(e);
         }
 
-        fields = foundFields.toArray(new Field[foundFields.size()]);
-        map.put(klass, fields);
-
         return fields;
     }
 
@@ -1651,4 +1643,4 @@
             }
         });
     }
-}
\ No newline at end of file
+}
diff --git a/core/java/android/widget/ProgressBar.java b/core/java/android/widget/ProgressBar.java
index de1bbc7..358dbde 100644
--- a/core/java/android/widget/ProgressBar.java
+++ b/core/java/android/widget/ProgressBar.java
@@ -1812,9 +1812,7 @@
         }
         if (mRefreshProgressRunnable != null) {
             removeCallbacks(mRefreshProgressRunnable);
-        }
-        if (mRefreshProgressRunnable != null && mRefreshIsPosted) {
-            removeCallbacks(mRefreshProgressRunnable);
+            mRefreshIsPosted = false;
         }
         if (mAccessibilityEventSender != null) {
             removeCallbacks(mAccessibilityEventSender);
diff --git a/core/java/android/widget/RemoteViewsAdapter.java b/core/java/android/widget/RemoteViewsAdapter.java
index 56bdb9b..5eaf20c 100644
--- a/core/java/android/widget/RemoteViewsAdapter.java
+++ b/core/java/android/widget/RemoteViewsAdapter.java
@@ -817,12 +817,12 @@
         mContext = context;
         mIntent = intent;
 
-        mAppWidgetId = intent.getIntExtra(RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID, -1);
-
-        mLayoutInflater = LayoutInflater.from(context);
         if (mIntent == null) {
             throw new IllegalArgumentException("Non-null Intent must be specified.");
         }
+
+        mAppWidgetId = intent.getIntExtra(RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID, -1);
+        mLayoutInflater = LayoutInflater.from(context);
         mRequestedViews = new RemoteViewsFrameLayoutRefSet();
 
         // Strip the previously injected app widget id from service intent
diff --git a/core/java/com/android/internal/content/NativeLibraryHelper.java b/core/java/com/android/internal/content/NativeLibraryHelper.java
index 02f675c..f479f4f 100644
--- a/core/java/com/android/internal/content/NativeLibraryHelper.java
+++ b/core/java/com/android/internal/content/NativeLibraryHelper.java
@@ -33,6 +33,7 @@
 import android.content.pm.PackageParser.PackageParserException;
 import android.os.Build;
 import android.os.SELinux;
+import android.os.SystemProperties;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.util.Slog;
@@ -74,6 +75,7 @@
 
         final long[] apkHandles;
         final boolean multiArch;
+        final boolean extractNativeLibs;
 
         public static Handle create(File packageFile) throws IOException {
             try {
@@ -86,14 +88,16 @@
 
         public static Handle create(Package pkg) throws IOException {
             return create(pkg.getAllCodePaths(),
-                    (pkg.applicationInfo.flags & ApplicationInfo.FLAG_MULTIARCH) != 0);
+                    (pkg.applicationInfo.flags & ApplicationInfo.FLAG_MULTIARCH) != 0,
+                    (pkg.applicationInfo.flags & ApplicationInfo.FLAG_EXTRACT_NATIVE_LIBS) != 0);
         }
 
         public static Handle create(PackageLite lite) throws IOException {
-            return create(lite.getAllCodePaths(), lite.multiArch);
+            return create(lite.getAllCodePaths(), lite.multiArch, lite.extractNativeLibs);
         }
 
-        private static Handle create(List<String> codePaths, boolean multiArch) throws IOException {
+        private static Handle create(List<String> codePaths, boolean multiArch,
+                boolean extractNativeLibs) throws IOException {
             final int size = codePaths.size();
             final long[] apkHandles = new long[size];
             for (int i = 0; i < size; i++) {
@@ -108,12 +112,13 @@
                 }
             }
 
-            return new Handle(apkHandles, multiArch);
+            return new Handle(apkHandles, multiArch, extractNativeLibs);
         }
 
-        Handle(long[] apkHandles, boolean multiArch) {
+        Handle(long[] apkHandles, boolean multiArch, boolean extractNativeLibs) {
             this.apkHandles = apkHandles;
             this.multiArch = multiArch;
+            this.extractNativeLibs = extractNativeLibs;
             mGuard.open("close");
         }
 
@@ -146,8 +151,8 @@
 
     private static native long nativeSumNativeBinaries(long handle, String cpuAbi);
 
-    private native static int nativeCopyNativeBinaries(long handle,
-            String sharedLibraryPath, String abiToCopy);
+    private native static int nativeCopyNativeBinaries(long handle, String sharedLibraryPath,
+            String abiToCopy, boolean extractNativeLibs, boolean hasNativeBridge);
 
     private static long sumNativeBinaries(Handle handle, String abi) {
         long sum = 0;
@@ -167,7 +172,8 @@
      */
     public static int copyNativeBinaries(Handle handle, File sharedLibraryDir, String abi) {
         for (long apkHandle : handle.apkHandles) {
-            int res = nativeCopyNativeBinaries(apkHandle, sharedLibraryDir.getPath(), abi);
+            int res = nativeCopyNativeBinaries(apkHandle, sharedLibraryDir.getPath(), abi,
+                    handle.extractNativeLibs, HAS_NATIVE_BRIDGE);
             if (res != INSTALL_SUCCEEDED) {
                 return res;
             }
@@ -218,7 +224,8 @@
     /**
      * Remove the native binaries of a given package. This deletes the files
      */
-    public static void removeNativeBinariesFromDirLI(File nativeLibraryRoot, boolean deleteRootDir) {
+    public static void removeNativeBinariesFromDirLI(File nativeLibraryRoot,
+            boolean deleteRootDir) {
         if (DEBUG_NATIVE) {
             Slog.w(TAG, "Deleting native binaries from: " + nativeLibraryRoot.getPath());
         }
@@ -247,7 +254,8 @@
             // asked to or this will prevent installation of future updates.
             if (deleteRootDir) {
                 if (!nativeLibraryRoot.delete()) {
-                    Slog.w(TAG, "Could not delete native binary directory: " + nativeLibraryRoot.getPath());
+                    Slog.w(TAG, "Could not delete native binary directory: " +
+                            nativeLibraryRoot.getPath());
                 }
             }
         }
@@ -416,6 +424,9 @@
     // We don't care about the other return values for now.
     private static final int BITCODE_PRESENT = 1;
 
+    private static final boolean HAS_NATIVE_BRIDGE =
+            !"0".equals(SystemProperties.get("ro.dalvik.vm.native.bridge", "0"));
+
     private static native int hasRenderscriptBitcode(long apkHandle);
 
     public static boolean hasRenderscriptBitcode(Handle handle) throws IOException {
diff --git a/core/java/com/android/internal/os/InstallerConnection.java b/core/java/com/android/internal/os/InstallerConnection.java
index 433a54b..a4cdf19 100644
--- a/core/java/com/android/internal/os/InstallerConnection.java
+++ b/core/java/com/android/internal/os/InstallerConnection.java
@@ -91,11 +91,11 @@
     }
 
     public int dexopt(String apkPath, int uid, boolean isPublic, String instructionSet) {
-        return dexopt(apkPath, uid, isPublic, "*", instructionSet, false, false);
+        return dexopt(apkPath, uid, isPublic, "*", instructionSet, false, false, null);
     }
 
     public int dexopt(String apkPath, int uid, boolean isPublic, String pkgName,
-            String instructionSet, boolean vmSafeMode, boolean debuggable) {
+            String instructionSet, boolean vmSafeMode, boolean debuggable, String outputPath) {
         StringBuilder builder = new StringBuilder("dexopt");
         builder.append(' ');
         builder.append(apkPath);
@@ -108,6 +108,8 @@
         builder.append(instructionSet);
         builder.append(vmSafeMode ? " 1" : " 0");
         builder.append(debuggable ? " 1" : " 0");
+        builder.append(' ');
+        builder.append(outputPath != null ? outputPath : "!");
         return execute(builder.toString());
     }
 
diff --git a/core/jni/AndroidRuntime.cpp b/core/jni/AndroidRuntime.cpp
index ce50d96..0bfc0c9 100644
--- a/core/jni/AndroidRuntime.cpp
+++ b/core/jni/AndroidRuntime.cpp
@@ -536,7 +536,6 @@
  */
 int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv)
 {
-    int result = -1;
     JavaVMInitArgs initArgs;
     char propBuf[PROPERTY_VALUE_MAX];
     char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX];
@@ -552,12 +551,19 @@
     char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX];
     char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX];
     char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX];
+    char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX];
     char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
     char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
     char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX];
     char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX];
     char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
     char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX];
+    char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
+    char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX];
+    char dex2oat_isa_variant_key[PROPERTY_KEY_MAX];
+    char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX];
+    char dex2oat_isa_features_key[PROPERTY_KEY_MAX];
+    char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX];
     char dex2oatFlagsBuf[PROPERTY_VALUE_MAX];
     char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX];
     char extraOptsBuf[PROPERTY_VALUE_MAX];
@@ -580,6 +586,7 @@
     char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX];
     char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX];
     char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX];
+    char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX];
 
     bool checkJni = false;
     property_get("dalvik.vm.checkjni", propBuf, "");
@@ -698,7 +705,7 @@
     if (!hasFile("/system/etc/preloaded-classes")) {
         ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n",
               strerror(errno));
-        goto bail;
+        return -1;
     }
     addOption("-Ximage-compiler-option");
     addOption("--image-classes=/system/etc/preloaded-classes");
@@ -732,6 +739,46 @@
         parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf,
                             "--compiler-filter=", "-Xcompiler-option");
     }
+    parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option");
+    parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j",
+                        "-Ximage-compiler-option");
+
+    // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to
+    // pass the instruction-set-features/variant as an image-compiler-option.
+    // TODO: Find a better way for the instruction-set.
+#if defined(__arm__)
+    constexpr const char* instruction_set = "arm";
+#elif defined(__aarch64__)
+    constexpr const char* instruction_set = "arm64";
+#elif defined(__mips__) && !defined(__LP64__)
+    constexpr const char* instruction_set = "mips";
+#elif defined(__mips__) && defined(__LP64__)
+    constexpr const char* instruction_set = "mips64";
+#elif defined(__i386__)
+    constexpr const char* instruction_set = "x86";
+#elif defined(__x86_64__)
+    constexpr const char* instruction_set = "x86_64";
+#else
+    constexpr const char* instruction_set = "unknown";
+#endif
+    // Note: it is OK to reuse the buffer, as the values are exactly the same between
+    //       * compiler-option, used for runtime compilation (DexClassLoader)
+    //       * image-compiler-option, used for boot-image compilation on device
+
+    // Copy the variant.
+    sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set);
+    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
+                        "--instruction-set-variant=", "-Ximage-compiler-option");
+    parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant,
+                        "--instruction-set-variant=", "-Xcompiler-option");
+    // Copy the features.
+    sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set);
+    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
+                        "--instruction-set-features=", "-Ximage-compiler-option");
+    parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features,
+                        "--instruction-set-features=", "-Xcompiler-option");
+
+
     property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, "");
     parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option");
 
@@ -810,6 +857,22 @@
         addOption(nativeBridgeLibrary);
     }
 
+    // Dalvik-cache pruning counter.
+    parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf,
+                       "-Xzygote-max-boot-retry=");
+#if defined(__LP64__)
+    const char* cpu_abilist_property_name = "ro.product.cpu.abilist64";
+#else
+    const char* cpu_abilist_property_name = "ro.product.cpu.abilist32";
+#endif  // defined(__LP64__)
+    property_get(cpu_abilist_property_name, propBuf, "");
+    if (propBuf[0] == '\0') {
+        ALOGE("%s is not expected to be empty", cpu_abilist_property_name);
+        return -1;
+    }
+    snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf);
+    addOption(cpuAbiListBuf);
+
     initArgs.version = JNI_VERSION_1_4;
     initArgs.options = mOptions.editArray();
     initArgs.nOptions = mOptions.size();
@@ -824,13 +887,10 @@
      */
     if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) {
         ALOGE("JNI_CreateJavaVM failed\n");
-        goto bail;
+        return -1;
     }
 
-    result = 0;
-
-bail:
-    return result;
+    return 0;
 }
 
 char* AndroidRuntime::toSlashClassName(const char* className)
diff --git a/core/jni/com_android_internal_content_NativeLibraryHelper.cpp b/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
index 3c1993e..9307ff9 100644
--- a/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
+++ b/core/jni/com_android_internal_content_NativeLibraryHelper.cpp
@@ -33,6 +33,7 @@
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
+#include <inttypes.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
@@ -173,7 +174,11 @@
 static install_status_t
 copyFileIfChanged(JNIEnv *env, void* arg, ZipFileRO* zipFile, ZipEntryRO zipEntry, const char* fileName)
 {
-    jstring* javaNativeLibPath = (jstring*) arg;
+    void** args = reinterpret_cast<void**>(arg);
+    jstring* javaNativeLibPath = (jstring*) args[0];
+    jboolean extractNativeLibs = *(jboolean*) args[1];
+    jboolean hasNativeBridge = *(jboolean*) args[2];
+
     ScopedUtfChars nativeLibPath(env, *javaNativeLibPath);
 
     size_t uncompLen;
@@ -181,13 +186,31 @@
     long crc;
     time_t modTime;
 
-    if (!zipFile->getEntryInfo(zipEntry, NULL, &uncompLen, NULL, NULL, &when, &crc)) {
+    int method;
+    off64_t offset;
+
+    if (!zipFile->getEntryInfo(zipEntry, &method, &uncompLen, NULL, &offset, &when, &crc)) {
         ALOGD("Couldn't read zip entry info\n");
         return INSTALL_FAILED_INVALID_APK;
-    } else {
-        struct tm t;
-        ZipUtils::zipTimeToTimespec(when, &t);
-        modTime = mktime(&t);
+    }
+
+    if (!extractNativeLibs) {
+        // check if library is uncompressed and page-aligned
+        if (method != ZipFileRO::kCompressStored) {
+            ALOGD("Library '%s' is compressed - will not be able to open it directly from apk.\n",
+                fileName);
+            return INSTALL_FAILED_INVALID_APK;
+        }
+
+        if (offset % PAGE_SIZE != 0) {
+            ALOGD("Library '%s' is not page-aligned - will not be able to open it directly from"
+                " apk.\n", fileName);
+            return INSTALL_FAILED_INVALID_APK;
+        }
+
+        if (!hasNativeBridge) {
+          return INSTALL_SUCCEEDED;
+        }
     }
 
     // Build local file path
@@ -208,6 +231,9 @@
     }
 
     // Only copy out the native file if it's different.
+    struct tm t;
+    ZipUtils::zipTimeToTimespec(when, &t);
+    modTime = mktime(&t);
     struct stat64 st;
     if (!isFileDifferent(localFileName, uncompLen, modTime, crc, &st)) {
         return INSTALL_SUCCEEDED;
@@ -465,10 +491,12 @@
 
 static jint
 com_android_internal_content_NativeLibraryHelper_copyNativeBinaries(JNIEnv *env, jclass clazz,
-        jlong apkHandle, jstring javaNativeLibPath, jstring javaCpuAbi)
+        jlong apkHandle, jstring javaNativeLibPath, jstring javaCpuAbi,
+        jboolean extractNativeLibs, jboolean hasNativeBridge)
 {
+    void* args[] = { &javaNativeLibPath, &extractNativeLibs, &hasNativeBridge };
     return (jint) iterateOverNativeFiles(env, apkHandle, javaCpuAbi,
-            copyFileIfChanged, &javaNativeLibPath);
+            copyFileIfChanged, reinterpret_cast<void*>(args));
 }
 
 static jlong
@@ -548,7 +576,7 @@
             "(J)V",
             (void *)com_android_internal_content_NativeLibraryHelper_close},
     {"nativeCopyNativeBinaries",
-            "(JLjava/lang/String;Ljava/lang/String;)I",
+            "(JLjava/lang/String;Ljava/lang/String;ZZ)I",
             (void *)com_android_internal_content_NativeLibraryHelper_copyNativeBinaries},
     {"nativeSumNativeBinaries",
             "(JLjava/lang/String;)J",
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index ccdb5db..0ded6d32 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -3094,9 +3094,9 @@
             </intent-filter>
         </receiver>
 
-        <receiver android:name="com.android.server.updates.TZInfoInstallReceiver" >
+        <receiver android:name="com.android.server.updates.TzDataInstallReceiver" >
             <intent-filter>
-                <action android:name="android.intent.action.UPDATE_TZINFO" />
+                <action android:name="android.intent.action.UPDATE_TZDATA" />
                 <data android:scheme="content" android:host="*" android:mimeType="*/*" />
             </intent-filter>
         </receiver>
diff --git a/core/res/res/values/attrs_manifest.xml b/core/res/res/values/attrs_manifest.xml
index ea592cf..f69772a 100644
--- a/core/res/res/values/attrs_manifest.xml
+++ b/core/res/res/values/attrs_manifest.xml
@@ -1021,6 +1021,10 @@
          <p>The default value of this attribute is <code>false</code>. -->
     <attr name="resumeWhilePausing" format="boolean" />
 
+    <!-- When set installer will extract native libraries. If set to false
+         libraries in the apk must be stored and page-aligned.  -->
+    <attr name="extractNativeLibs" format="boolean"/>
+
     <!-- The <code>manifest</code> tag is the root of an
          <code>AndroidManifest.xml</code> file,
          describing the contents of an Android package (.apk) file.  One
@@ -1151,8 +1155,8 @@
              @hide -->
         <attr name="usesCleartextTraffic" />
         <attr name="multiArch" />
+        <attr name="extractNativeLibs" />
     </declare-styleable>
-    
     <!-- The <code>permission</code> tag declares a security permission that can be
          used to control access from other packages to specific components or
          features in your package (or other packages).  See the
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 2bb9aa8..bfd0d26 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2598,4 +2598,5 @@
     <public type="style" name="Theme.DeviceDefault.Dialog.Alert" />
     <public type="style" name="Theme.DeviceDefault.Light.Dialog.Alert" />
 
+  <public type="attr" name="extractNativeLibs" />
 </resources>
diff --git a/core/tests/coretests/apks/install_jni_lib/Android.mk b/core/tests/coretests/apks/install_jni_lib/Android.mk
index b61ea8e..7322e8d 100644
--- a/core/tests/coretests/apks/install_jni_lib/Android.mk
+++ b/core/tests/coretests/apks/install_jni_lib/Android.mk
@@ -23,6 +23,14 @@
     libnativehelper
 
 LOCAL_MODULE := libframeworks_coretests_jni
+
+# this does not prevent build system
+# from installing library to /system/lib
 LOCAL_MODULE_TAGS := tests
 
+# .. we want to avoid that... so we put it somewhere
+# bionic linker cant find it without outside help (nativetests):
+LOCAL_MODULE_PATH_32 := $($(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+LOCAL_MODULE_PATH_64 := $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/core/tests/coretests/apks/install_jni_lib/com_android_frameworks_coretests_JNITest.cpp b/core/tests/coretests/apks/install_jni_lib/com_android_frameworks_coretests_JNITest.cpp
index 957fc4a..e0b616c 100644
--- a/core/tests/coretests/apks/install_jni_lib/com_android_frameworks_coretests_JNITest.cpp
+++ b/core/tests/coretests/apks/install_jni_lib/com_android_frameworks_coretests_JNITest.cpp
@@ -27,8 +27,8 @@
     { "checkFunction", "()I", (void*) checkFunction },
 };
 
-int register_com_android_framework_coretests_JNITests(JNIEnv* env) {
-    return jniRegisterNativeMethods(env, "com/android/framework/coretests/JNITests", sMethods,
+int register_com_android_frameworks_coretests_JNITests(JNIEnv* env) {
+    return jniRegisterNativeMethods(env, "com/android/frameworks/coretests/JNITests", sMethods,
             NELEM(sMethods));
 }
 
@@ -46,7 +46,7 @@
         return JNI_ERR;
     }
 
-    if ((status = android::register_com_android_framework_coretests_JNITests(e)) < 0) {
+    if ((status = android::register_com_android_frameworks_coretests_JNITests(e)) < 0) {
         return JNI_ERR;
     }
 
diff --git a/core/tests/coretests/apks/install_jni_lib_open_from_apk/Android.mk b/core/tests/coretests/apks/install_jni_lib_open_from_apk/Android.mk
new file mode 100644
index 0000000..5fa2405
--- /dev/null
+++ b/core/tests/coretests/apks/install_jni_lib_open_from_apk/Android.mk
@@ -0,0 +1,11 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_PACKAGE_NAME := install_jni_lib_open_from_apk
+
+LOCAL_JNI_SHARED_LIBRARIES_ZIP_OPTIONS := -0
+LOCAL_PAGE_ALIGN_JNI_SHARED_LIBRARIES := true
+
+include $(FrameworkCoreTests_BUILD_PACKAGE)
diff --git a/core/tests/coretests/apks/install_jni_lib_open_from_apk/AndroidManifest.xml b/core/tests/coretests/apks/install_jni_lib_open_from_apk/AndroidManifest.xml
new file mode 100644
index 0000000..190f894
--- /dev/null
+++ b/core/tests/coretests/apks/install_jni_lib_open_from_apk/AndroidManifest.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+        package="com.android.frameworks.coretests.install_jni_lib_open_from_apk">
+
+    <application android:hasCode="true" android:label="@string/app_name" android:extractNativeLibs="false">
+        <activity android:name="com.android.frameworks.coretests.OpenFromApkActivity"
+           android:label="@string/app_name">
+          <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+          </intent-filter>
+        </activity>
+    </application>
+</manifest>
diff --git a/core/tests/coretests/apks/install_jni_lib_open_from_apk/res/values/strings.xml b/core/tests/coretests/apks/install_jni_lib_open_from_apk/res/values/strings.xml
new file mode 100644
index 0000000..8c2a0bf
--- /dev/null
+++ b/core/tests/coretests/apks/install_jni_lib_open_from_apk/res/values/strings.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2015 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+  <string name="app_name">Load From Apk Test</string>
+</resources>
diff --git a/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/JNITests.java b/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/JNITests.java
new file mode 100644
index 0000000..4f9176c
--- /dev/null
+++ b/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/JNITests.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.android.frameworks.coretests;
+
+public class JNITests {
+  static {
+    System.loadLibrary("frameworks_coretests_jni");
+  }
+
+  public static native int checkFunction();
+}
diff --git a/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/OpenFromApkActivity.java b/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/OpenFromApkActivity.java
new file mode 100644
index 0000000..524cad7c
--- /dev/null
+++ b/core/tests/coretests/apks/install_jni_lib_open_from_apk/src/com/android/frameworks/coretests/OpenFromApkActivity.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.android.frameworks.coretests;
+
+import android.app.Activity;
+import android.widget.TextView;
+import android.os.Bundle;
+
+public class OpenFromApkActivity extends Activity {
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        TextView  tv = new TextView(this);
+
+        int i = JNITests.checkFunction();
+
+        tv.setText("All is well: i=" + i);
+
+        setContentView(tv);
+    }
+
+}
diff --git a/core/tests/coretests/src/android/net/UriTest.java b/core/tests/coretests/src/android/net/UriTest.java
index cd45017..6fa28b1 100644
--- a/core/tests/coretests/src/android/net/UriTest.java
+++ b/core/tests/coretests/src/android/net/UriTest.java
@@ -804,4 +804,56 @@
         assertFalse(Uri.parse("content://com.example/path/path").isPathPrefixMatch(
                 Uri.parse("content://com.example/path%2Fpath")));
     }
+
+    public void testToSafeString() {
+        checkToSafeString("tel:xxxxxx", "tel:Google");
+        checkToSafeString("tel:xxxxxxxxxx", "tel:1234567890");
+        checkToSafeString("tEl:xxx.xxx-xxxx", "tEl:123.456-7890");
+
+        checkToSafeString("sms:xxxxxx", "sms:123abc");
+        checkToSafeString("smS:xxx.xxx-xxxx", "smS:123.456-7890");
+
+        checkToSafeString("smsto:xxxxxx", "smsto:123abc");
+        checkToSafeString("SMSTo:xxx.xxx-xxxx", "SMSTo:123.456-7890");
+
+        checkToSafeString("mailto:xxxxxxx@xxxxxxx.xxx", "mailto:android@android.com");
+        checkToSafeString("Mailto:xxxxxxx@xxxxxxx.xxxxxxxxxx",
+                "Mailto:android@android.com/secret");
+
+        checkToSafeString("sip:xxxxxxx@xxxxxxx.xxxxxxxx", "sip:android@android.com:1234");
+        checkToSafeString("sIp:xxxxxxx@xxxxxxx.xxx", "sIp:android@android.com");
+
+        checkToSafeString("http://www.android.com/...", "http://www.android.com");
+        checkToSafeString("HTTP://www.android.com/...", "HTTP://www.android.com");
+        checkToSafeString("http://www.android.com/...", "http://www.android.com/");
+        checkToSafeString("http://www.android.com/...", "http://www.android.com/secretUrl?param");
+        checkToSafeString("http://www.android.com/...",
+                "http://user:pwd@www.android.com/secretUrl?param");
+        checkToSafeString("http://www.android.com/...",
+                "http://user@www.android.com/secretUrl?param");
+        checkToSafeString("http://www.android.com/...", "http://www.android.com/secretUrl?param");
+        checkToSafeString("http:///...", "http:///path?param");
+        checkToSafeString("http:///...", "http://");
+        checkToSafeString("http://:12345/...", "http://:12345/");
+
+        checkToSafeString("https://www.android.com/...", "https://www.android.com/secretUrl?param");
+        checkToSafeString("https://www.android.com:8443/...",
+                "https://user:pwd@www.android.com:8443/secretUrl?param");
+        checkToSafeString("https://www.android.com/...", "https://user:pwd@www.android.com");
+        checkToSafeString("Https://www.android.com/...", "Https://user:pwd@www.android.com");
+
+        checkToSafeString("ftp://ftp.android.com/...", "ftp://ftp.android.com/");
+        checkToSafeString("ftP://ftp.android.com/...", "ftP://anonymous@ftp.android.com/");
+        checkToSafeString("ftp://ftp.android.com:2121/...",
+                "ftp://root:love@ftp.android.com:2121/");
+
+        checkToSafeString("unsupported://ajkakjah/askdha/secret?secret",
+                "unsupported://ajkakjah/askdha/secret?secret");
+        checkToSafeString("unsupported:ajkakjah/askdha/secret?secret",
+                "unsupported:ajkakjah/askdha/secret?secret");
+    }
+
+    private void checkToSafeString(String expectedSafeString, String original) {
+        assertEquals(expectedSafeString, Uri.parse(original).toSafeString());
+    }
 }
diff --git a/keystore/java/android/security/AndroidKeyStore.java b/keystore/java/android/security/AndroidKeyStore.java
index f3eb317..f72c7acd 100644
--- a/keystore/java/android/security/AndroidKeyStore.java
+++ b/keystore/java/android/security/AndroidKeyStore.java
@@ -457,7 +457,7 @@
 
         String keyAlgorithmString = key.getAlgorithm();
         @KeyStoreKeyConstraints.AlgorithmEnum int keyAlgorithm;
-        @KeyStoreKeyConstraints.AlgorithmEnum Integer digest;
+        @KeyStoreKeyConstraints.DigestEnum Integer digest;
         try {
             keyAlgorithm =
                     KeyStoreKeyConstraints.Algorithm.fromJCASecretKeyAlgorithm(keyAlgorithmString);
@@ -466,87 +466,94 @@
             throw new KeyStoreException("Unsupported secret key algorithm: " + keyAlgorithmString);
         }
 
-        if ((params.getAlgorithm() != null) && (params.getAlgorithm() != keyAlgorithm)) {
-            throw new KeyStoreException("Key algorithm mismatch. Key: " + keyAlgorithmString
-                    + ", parameter spec: "
-                    + KeyStoreKeyConstraints.Algorithm.toString(params.getAlgorithm()));
-        }
-
         KeymasterArguments args = new KeymasterArguments();
         args.addInt(KeymasterDefs.KM_TAG_ALGORITHM,
                 KeyStoreKeyConstraints.Algorithm.toKeymaster(keyAlgorithm));
 
-        if (digest != null) {
-            // Digest available from JCA key algorithm
-            if (params.getDigest() != null) {
-                // Digest also specified in parameters -- check that these two match
-                if (digest != params.getDigest()) {
-                    throw new KeyStoreException("Key digest mismatch. Key: " + keyAlgorithmString
+        @KeyStoreKeyConstraints.DigestEnum int digests;
+        if (params.isDigestsSpecified()) {
+            // Digest(s) specified in parameters
+            if (digest != null) {
+                // Digest also specified in the JCA key algorithm name.
+                if ((params.getDigests() & digest) != digest) {
+                    throw new KeyStoreException("Key digest mismatch"
+                            + ". Key: " + keyAlgorithmString
                             + ", parameter spec: "
-                            + KeyStoreKeyConstraints.Digest.toString(params.getDigest()));
+                            + KeyStoreKeyConstraints.Digest.allToString(params.getDigests()));
                 }
             }
+            digests = params.getDigests();
         } else {
-            // Digest not available from JCA key algorithm
-            digest = params.getDigest();
+            // No digest specified in parameters
+            if (digest != null) {
+                // Digest specified in the JCA key algorithm name.
+                digests = digest;
+            } else {
+                digests = 0;
+            }
         }
-        if (digest != null) {
-            args.addInt(KeymasterDefs.KM_TAG_DIGEST,
-                    KeyStoreKeyConstraints.Digest.toKeymaster(digest));
+        for (int keymasterDigest : KeyStoreKeyConstraints.Digest.allToKeymaster(digests)) {
+            args.addInt(KeymasterDefs.KM_TAG_DIGEST, keymasterDigest);
+        }
+        if (digests != 0) {
+            // TODO: Remove MAC length constraint once Keymaster API no longer requires it.
+            // This code will blow up if mode than one digest is specified.
+            Integer digestOutputSizeBytes =
+                    KeyStoreKeyConstraints.Digest.getOutputSizeBytes(digest);
+            if (digestOutputSizeBytes != null) {
+                // TODO: Switch to bits instead of bytes, once this is fixed in Keymaster
+                args.addInt(KeymasterDefs.KM_TAG_MAC_LENGTH, digestOutputSizeBytes);
+            }
+        }
+        if (keyAlgorithm == KeyStoreKeyConstraints.Algorithm.HMAC) {
+            if (digests == 0) {
+                throw new KeyStoreException("At least one digest algorithm must be specified"
+                        + " for key algorithm " + keyAlgorithmString);
+            }
         }
 
-        @KeyStoreKeyConstraints.PurposeEnum int purposes = (params.getPurposes() != null)
-                ? params.getPurposes()
-                : (KeyStoreKeyConstraints.Purpose.ENCRYPT
-                        | KeyStoreKeyConstraints.Purpose.DECRYPT
-                        | KeyStoreKeyConstraints.Purpose.SIGN
-                        | KeyStoreKeyConstraints.Purpose.VERIFY);
-        for (int keymasterPurpose :
-            KeyStoreKeyConstraints.Purpose.allToKeymaster(purposes)) {
+        int purposes = params.getPurposes();
+        for (int keymasterPurpose : KeyStoreKeyConstraints.Purpose.allToKeymaster(purposes)) {
             args.addInt(KeymasterDefs.KM_TAG_PURPOSE, keymasterPurpose);
         }
-        if (params.getBlockMode() != null) {
-            args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE,
-                    KeyStoreKeyConstraints.BlockMode.toKeymaster(params.getBlockMode()));
+        for (int keymasterBlockMode :
+            KeyStoreKeyConstraints.BlockMode.allToKeymaster(params.getBlockModes())) {
+            args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, keymasterBlockMode);
         }
-        if (params.getPadding() != null) {
-            args.addInt(KeymasterDefs.KM_TAG_PADDING,
-                    KeyStoreKeyConstraints.Padding.toKeymaster(params.getPadding()));
+        for (int keymasterPadding :
+            KeyStoreKeyConstraints.Padding.allToKeymaster(params.getPaddings())) {
+            args.addInt(KeymasterDefs.KM_TAG_PADDING, keymasterPadding);
         }
-        if (params.getMaxUsesPerBoot() != null) {
-            args.addInt(KeymasterDefs.KM_TAG_MAX_USES_PER_BOOT, params.getMaxUsesPerBoot());
-        }
-        if (params.getMinSecondsBetweenOperations() != null) {
-            args.addInt(KeymasterDefs.KM_TAG_MIN_SECONDS_BETWEEN_OPS,
-                    params.getMinSecondsBetweenOperations());
-        }
-        if (params.getUserAuthenticators().isEmpty()) {
+        if (params.getUserAuthenticators() == 0) {
             args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
         } else {
-        // TODO: Pass-in user authenticator IDs once the Keymaster API has stabilized
-//            for (int userAuthenticatorId : params.getUserAuthenticators()) {
-//                args.addInt(KeymasterDefs.KM_TAG_USER_AUTH_ID, userAuthenticatorId);
-//            }
+            args.addInt(KeymasterDefs.KM_TAG_USER_AUTH_TYPE,
+                    KeyStoreKeyConstraints.UserAuthenticator.allToKeymaster(
+                            params.getUserAuthenticators()));
         }
-        if (params.getUserAuthenticationValidityDurationSeconds() != null) {
+        if (params.getUserAuthenticationValidityDurationSeconds() != -1) {
             args.addInt(KeymasterDefs.KM_TAG_AUTH_TIMEOUT,
                     params.getUserAuthenticationValidityDurationSeconds());
         }
-        if (params.getKeyValidityStart() != null) {
-            args.addDate(KeymasterDefs.KM_TAG_ACTIVE_DATETIME, params.getKeyValidityStart());
-        }
-        if (params.getKeyValidityForOriginationEnd() != null) {
-            args.addDate(KeymasterDefs.KM_TAG_ORIGINATION_EXPIRE_DATETIME,
-                    params.getKeyValidityForOriginationEnd());
-        }
-        if (params.getKeyValidityForConsumptionEnd() != null) {
-            args.addDate(KeymasterDefs.KM_TAG_USAGE_EXPIRE_DATETIME,
-                    params.getKeyValidityForConsumptionEnd());
-        }
+        args.addDate(KeymasterDefs.KM_TAG_ACTIVE_DATETIME,
+                (params.getKeyValidityStart() != null)
+                        ? params.getKeyValidityStart() : new Date(0));
+        args.addDate(KeymasterDefs.KM_TAG_ORIGINATION_EXPIRE_DATETIME,
+                (params.getKeyValidityForOriginationEnd() != null)
+                        ? params.getKeyValidityForOriginationEnd() : new Date(Long.MAX_VALUE));
+        args.addDate(KeymasterDefs.KM_TAG_USAGE_EXPIRE_DATETIME,
+                (params.getKeyValidityForConsumptionEnd() != null)
+                        ? params.getKeyValidityForConsumptionEnd() : new Date(Long.MAX_VALUE));
 
         // TODO: Remove this once keymaster does not require us to specify the size of imported key.
         args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, keyMaterial.length * 8);
 
+        if (((purposes & KeyStoreKeyConstraints.Purpose.ENCRYPT) != 0)
+                || ((purposes & KeyStoreKeyConstraints.Purpose.DECRYPT) != 0)) {
+            // Permit caller-specified IV. This is needed for the Cipher abstraction.
+            args.addBoolean(KeymasterDefs.KM_TAG_CALLER_NONCE);
+        }
+
         Credentials.deleteAllTypesForAlias(mKeyStore, entryAlias);
         String keyAliasInKeystore = Credentials.USER_SECRET_KEY + entryAlias;
         int errorCode = mKeyStore.importKey(
diff --git a/keystore/java/android/security/AndroidKeyStoreProvider.java b/keystore/java/android/security/AndroidKeyStoreProvider.java
index 9081e92..635b2fa 100644
--- a/keystore/java/android/security/AndroidKeyStoreProvider.java
+++ b/keystore/java/android/security/AndroidKeyStoreProvider.java
@@ -18,6 +18,9 @@
 
 import java.security.Provider;
 
+import javax.crypto.Cipher;
+import javax.crypto.Mac;
+
 /**
  * A provider focused on providing JCA interfaces for the Android KeyStore.
  *
@@ -26,14 +29,104 @@
 public class AndroidKeyStoreProvider extends Provider {
     public static final String PROVIDER_NAME = "AndroidKeyStore";
 
+    // IMPLEMENTATION NOTE: Class names are hard-coded in this provider to avoid loading these
+    // classes when this provider is instantiated and installed early on during each app's
+    // initialization process.
+
+    private static final String PACKAGE_NAME = "android.security";
+    private static final String KEYSTORE_SECRET_KEY_CLASS_NAME =
+            PACKAGE_NAME + ".KeyStoreSecretKey";
+
     public AndroidKeyStoreProvider() {
         super(PROVIDER_NAME, 1.0, "Android KeyStore security provider");
 
         // java.security.KeyStore
-        put("KeyStore." + AndroidKeyStore.NAME, AndroidKeyStore.class.getName());
+        put("KeyStore.AndroidKeyStore", PACKAGE_NAME + ".AndroidKeyStore");
 
         // java.security.KeyPairGenerator
-        put("KeyPairGenerator.EC", AndroidKeyPairGenerator.EC.class.getName());
-        put("KeyPairGenerator.RSA", AndroidKeyPairGenerator.RSA.class.getName());
+        put("KeyPairGenerator.EC", PACKAGE_NAME + ".AndroidKeyPairGenerator$EC");
+        put("KeyPairGenerator.RSA", PACKAGE_NAME +  ".AndroidKeyPairGenerator$RSA");
+
+        // javax.crypto.KeyGenerator
+        put("KeyGenerator.AES", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$AES");
+        put("KeyGenerator.HmacSHA1", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA1");
+        put("KeyGenerator.HmacSHA224", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA224");
+        put("KeyGenerator.HmacSHA256", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA256");
+        put("KeyGenerator.HmacSHA384", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA384");
+        put("KeyGenerator.HmacSHA512", PACKAGE_NAME + ".KeyStoreKeyGeneratorSpi$HmacSHA512");
+
+        // java.security.SecretKeyFactory
+        putSecretKeyFactoryImpl("AES");
+        putSecretKeyFactoryImpl("HmacSHA1");
+        putSecretKeyFactoryImpl("HmacSHA224");
+        putSecretKeyFactoryImpl("HmacSHA256");
+        putSecretKeyFactoryImpl("HmacSHA384");
+        putSecretKeyFactoryImpl("HmacSHA512");
+
+        // javax.crypto.Mac
+        putMacImpl("HmacSHA224", PACKAGE_NAME + ".KeyStoreHmacSpi$HmacSHA224");
+        putMacImpl("HmacSHA256", PACKAGE_NAME + ".KeyStoreHmacSpi$HmacSHA256");
+        putMacImpl("HmacSHA384", PACKAGE_NAME + ".KeyStoreHmacSpi$HmacSHA384");
+        putMacImpl("HmacSHA512", PACKAGE_NAME + ".KeyStoreHmacSpi$HmacSHA512");
+
+        // javax.crypto.Cipher
+        putSymmetricCipherImpl("AES/ECB/NoPadding",
+                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$ECB$NoPadding");
+        putSymmetricCipherImpl("AES/ECB/PKCS7Padding",
+                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$ECB$PKCS7Padding");
+
+        putSymmetricCipherImpl("AES/CBC/NoPadding",
+                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CBC$NoPadding");
+        putSymmetricCipherImpl("AES/CBC/PKCS7Padding",
+                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CBC$PKCS7Padding");
+
+        putSymmetricCipherImpl("AES/CTR/NoPadding",
+                PACKAGE_NAME + ".KeyStoreCipherSpi$AES$CTR$NoPadding");
+    }
+
+    private void putSecretKeyFactoryImpl(String algorithm) {
+        put("SecretKeyFactory." + algorithm, PACKAGE_NAME + ".KeyStoreSecretKeyFactorySpi");
+    }
+
+    private void putMacImpl(String algorithm, String implClass) {
+        put("Mac." + algorithm, implClass);
+        put("Mac." + algorithm + " SupportedKeyClasses", KEYSTORE_SECRET_KEY_CLASS_NAME);
+    }
+
+    private void putSymmetricCipherImpl(String transformation, String implClass) {
+        put("Cipher." + transformation, implClass);
+        put("Cipher." + transformation + " SupportedKeyClasses", KEYSTORE_SECRET_KEY_CLASS_NAME);
+    }
+
+    /**
+     * Gets the {@link KeyStore} operation handle corresponding to the provided JCA crypto
+     * primitive.
+     *
+     * <p>The following primitives are supported: {@link Cipher} and {@link Mac}.
+     *
+     * @return KeyStore operation handle or {@code null} if the provided primitive's KeyStore
+     *         operation is not in progress.
+     *
+     * @throws IllegalArgumentException if the provided primitive is not supported or is not backed
+     *         by AndroidKeyStore provider.
+     */
+    public static Long getKeyStoreOperationHandle(Object cryptoPrimitive) {
+        if (cryptoPrimitive == null) {
+            throw new NullPointerException();
+        }
+        Object spi;
+        if (cryptoPrimitive instanceof Mac) {
+            spi = ((Mac) cryptoPrimitive).getSpi();
+        } else if (cryptoPrimitive instanceof Cipher) {
+            spi = ((Cipher) cryptoPrimitive).getSpi();
+        } else {
+            throw new IllegalArgumentException("Unsupported crypto primitive: " + cryptoPrimitive);
+        }
+        if (!(spi instanceof KeyStoreCryptoOperation)) {
+            throw new IllegalArgumentException(
+                    "Crypto primitive not backed by AndroidKeyStore: " + cryptoPrimitive
+                    + ", spi: " + spi);
+        }
+        return ((KeyStoreCryptoOperation) spi).getOperationHandle();
     }
 }
diff --git a/keystore/java/android/security/CryptoOperationException.java b/keystore/java/android/security/CryptoOperationException.java
new file mode 100644
index 0000000..00c142f
--- /dev/null
+++ b/keystore/java/android/security/CryptoOperationException.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Base class for exceptions during cryptographic operations which cannot throw a suitable checked
+ * exception.
+ *
+ * <p>The contract of the majority of crypto primitives/operations (e.g. {@code Cipher} or
+ * {@code Signature}) is that they can throw a checked exception during initialization, but are not
+ * permitted to throw a checked exception during operation. Because crypto operations can fail
+ * for a variety of reasons after initialization, this base class provides type-safety for unchecked
+ * exceptions that may be thrown in those cases.
+ *
+ * @hide
+ */
+public class CryptoOperationException extends RuntimeException {
+
+    /**
+     * Constructs a new {@code CryptoOperationException} without detail message and cause.
+     */
+    public CryptoOperationException() {
+        super();
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided detail message and no
+     * cause.
+     */
+    public CryptoOperationException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided detail message and cause.
+     */
+    public CryptoOperationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs a new {@code CryptoOperationException} with the provided cause.
+     */
+    public CryptoOperationException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/keystore/java/android/security/KeyExpiredException.java b/keystore/java/android/security/KeyExpiredException.java
new file mode 100644
index 0000000..35a5acc
--- /dev/null
+++ b/keystore/java/android/security/KeyExpiredException.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Indicates that a cryptographic operation failed because the employed key's validity end date
+ * is in the past.
+ *
+ * @hide
+ */
+public class KeyExpiredException extends CryptoOperationException {
+
+    /**
+     * Constructs a new {@code KeyExpiredException} without detail message and cause.
+     */
+    public KeyExpiredException() {
+        super("Key expired");
+    }
+
+    /**
+     * Constructs a new {@code KeyExpiredException} with the provided detail message and no cause.
+     */
+    public KeyExpiredException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new {@code KeyExpiredException} with the provided detail message and cause.
+     */
+    public KeyExpiredException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/keystore/java/android/security/KeyGeneratorSpec.java b/keystore/java/android/security/KeyGeneratorSpec.java
new file mode 100644
index 0000000..3ada7f6
--- /dev/null
+++ b/keystore/java/android/security/KeyGeneratorSpec.java
@@ -0,0 +1,401 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import java.security.spec.AlgorithmParameterSpec;
+import java.util.Date;
+
+import javax.crypto.KeyGenerator;
+import javax.crypto.SecretKey;
+
+/**
+ * {@link AlgorithmParameterSpec} for initializing a {@code KeyGenerator} that works with
+ * <a href="{@docRoot}training/articles/keystore.html">Android KeyStore facility</a>.
+ *
+ * <p>The Android KeyStore facility is accessed through a {@link KeyGenerator} API using the
+ * {@code AndroidKeyStore} provider. The {@code context} passed in may be used to pop up some UI to
+ * ask the user to unlock or initialize the Android KeyStore facility.
+ *
+ * <p>After generation, the {@code keyStoreAlias} is used with the
+ * {@link java.security.KeyStore#getEntry(String, java.security.KeyStore.ProtectionParameter)}
+ * interface to retrieve the {@link SecretKey}.
+ *
+ * @hide
+ */
+public class KeyGeneratorSpec implements AlgorithmParameterSpec {
+
+    private final Context mContext;
+    private final String mKeystoreAlias;
+    private final int mFlags;
+    private final Integer mKeySize;
+    private final Date mKeyValidityStart;
+    private final Date mKeyValidityForOriginationEnd;
+    private final Date mKeyValidityForConsumptionEnd;
+    private final @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+    private final @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+    private final @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+    private final @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+    private final int mUserAuthenticationValidityDurationSeconds;
+
+    private KeyGeneratorSpec(
+            Context context,
+            String keyStoreAlias,
+            int flags,
+            Integer keySize,
+            Date keyValidityStart,
+            Date keyValidityForOriginationEnd,
+            Date keyValidityForConsumptionEnd,
+            @KeyStoreKeyConstraints.PurposeEnum int purposes,
+            @KeyStoreKeyConstraints.PaddingEnum int paddings,
+            @KeyStoreKeyConstraints.BlockModeEnum int blockModes,
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators,
+            int userAuthenticationValidityDurationSeconds) {
+        if (context == null) {
+            throw new IllegalArgumentException("context == null");
+        } else if (TextUtils.isEmpty(keyStoreAlias)) {
+            throw new IllegalArgumentException("keyStoreAlias must not be empty");
+        } else if ((userAuthenticationValidityDurationSeconds < 0)
+                && (userAuthenticationValidityDurationSeconds != -1)) {
+            throw new IllegalArgumentException(
+                    "userAuthenticationValidityDurationSeconds must not be negative");
+        }
+
+        mContext = context;
+        mKeystoreAlias = keyStoreAlias;
+        mFlags = flags;
+        mKeySize = keySize;
+        mKeyValidityStart = keyValidityStart;
+        mKeyValidityForOriginationEnd = keyValidityForOriginationEnd;
+        mKeyValidityForConsumptionEnd = keyValidityForConsumptionEnd;
+        mPurposes = purposes;
+        mPaddings = paddings;
+        mBlockModes = blockModes;
+        mUserAuthenticators = userAuthenticators;
+        mUserAuthenticationValidityDurationSeconds = userAuthenticationValidityDurationSeconds;
+    }
+
+    /**
+     * Gets the Android context used for operations with this instance.
+     */
+    public Context getContext() {
+        return mContext;
+    }
+
+    /**
+     * Returns the alias that will be used in the {@code java.security.KeyStore} in conjunction with
+     * the {@code AndroidKeyStore}.
+     */
+    public String getKeystoreAlias() {
+        return mKeystoreAlias;
+    }
+
+    /**
+     * @hide
+     */
+    public int getFlags() {
+        return mFlags;
+    }
+
+    /**
+     * Gets the requested key size or {@code null} if the default size should be used.
+     */
+    public Integer getKeySize() {
+        return mKeySize;
+    }
+
+    /**
+     * Gets the time instant before which the key is not yet valid.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityStart() {
+        return mKeyValidityStart;
+    }
+
+    /**
+     * Gets the time instant after which the key is no longer valid for decryption and verification.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityForConsumptionEnd() {
+        return mKeyValidityForConsumptionEnd;
+    }
+
+    /**
+     * Gets the time instant after which the key is no longer valid for encryption and signing.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityForOriginationEnd() {
+        return mKeyValidityForOriginationEnd;
+    }
+
+    /**
+     * Gets the set of purposes for which the key can be used.
+     */
+    public @KeyStoreKeyConstraints.PurposeEnum int getPurposes() {
+        return mPurposes;
+    }
+
+    /**
+     * Gets the set of padding schemes to which the key is restricted.
+     */
+    public @KeyStoreKeyConstraints.PaddingEnum int getPaddings() {
+        return mPaddings;
+    }
+
+    /**
+     * Gets the set of block modes to which the key is restricted.
+     */
+    public @KeyStoreKeyConstraints.BlockModeEnum int getBlockModes() {
+        return mBlockModes;
+    }
+
+    /**
+     * Gets the set of user authenticators which protect access to this key. The key can only be
+     * used iff the user has authenticated to at least one of these user authenticators.
+     *
+     * @return user authenticators or {@code 0} if the key can be used without user authentication.
+     */
+    public @KeyStoreKeyConstraints.UserAuthenticatorEnum int getUserAuthenticators() {
+        return mUserAuthenticators;
+    }
+
+    /**
+     * Gets the duration of time (seconds) for which this key can be used after the user
+     * successfully authenticates to one of the associated user authenticators.
+     *
+     * @return duration in seconds or {@code -1} if not restricted. {@code 0} means authentication
+     *         is required for every use of the key.
+     */
+    public int getUserAuthenticationValidityDurationSeconds() {
+        return mUserAuthenticationValidityDurationSeconds;
+    }
+
+    /**
+     * Returns {@code true} if the key must be encrypted in the {@link java.security.KeyStore}.
+     */
+    public boolean isEncryptionRequired() {
+        return (mFlags & KeyStore.FLAG_ENCRYPTED) != 0;
+    }
+
+    public static class Builder {
+        private final Context mContext;
+        private String mKeystoreAlias;
+        private int mFlags;
+        private Integer mKeySize;
+        private Date mKeyValidityStart;
+        private Date mKeyValidityForOriginationEnd;
+        private Date mKeyValidityForConsumptionEnd;
+        private @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+        private @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+        private @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+        private @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+        private int mUserAuthenticationValidityDurationSeconds = -1;
+
+        /**
+         * Creates a new instance of the {@code Builder} with the given {@code context}. The
+         * {@code context} passed in may be used to pop up some UI to ask the user to unlock or
+         * initialize the Android KeyStore facility.
+         */
+        public Builder(Context context) {
+            if (context == null) {
+                throw new NullPointerException("context == null");
+            }
+            mContext = context;
+        }
+
+        /**
+         * Sets the alias to be used to retrieve the key later from a {@link java.security.KeyStore}
+         * instance using the {@code AndroidKeyStore} provider.
+         *
+         * <p>The alias must be provided. There is no default.
+         */
+        public Builder setAlias(String alias) {
+            if (alias == null) {
+                throw new NullPointerException("alias == null");
+            }
+            mKeystoreAlias = alias;
+            return this;
+        }
+
+        /**
+         * Sets the size (in bits) of the key to be generated.
+         *
+         * <p>By default, the key size will be determines based on the key algorithm. For example,
+         * for {@code HmacSHA256}, the key size will default to {@code 256}.
+         */
+        public Builder setKeySize(int keySize) {
+            mKeySize = keySize;
+            return this;
+        }
+
+        /**
+         * Indicates that this key must be encrypted at rest on storage. Note that enabling this
+         * will require that the user enable a strong lock screen (e.g., PIN, password) before
+         * creating or using the generated key is successful.
+         */
+        public Builder setEncryptionRequired(boolean required) {
+            if (required) {
+                mFlags |= KeyStore.FLAG_ENCRYPTED;
+            } else {
+                mFlags &= ~KeyStore.FLAG_ENCRYPTED;
+            }
+            return this;
+        }
+
+        /**
+         * Sets the time instant before which the key is not yet valid.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityEnd(Date)
+         */
+        public Builder setKeyValidityStart(Date startDate) {
+            mKeyValidityStart = startDate;
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityStart(Date)
+         * @see #setKeyValidityForConsumptionEnd(Date)
+         * @see #setKeyValidityForOriginationEnd(Date)
+         */
+        public Builder setKeyValidityEnd(Date endDate) {
+            setKeyValidityForOriginationEnd(endDate);
+            setKeyValidityForConsumptionEnd(endDate);
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid for encryption and signing.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityForConsumptionEnd(Date)
+         */
+        public Builder setKeyValidityForOriginationEnd(Date endDate) {
+            mKeyValidityForOriginationEnd = endDate;
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid for decryption and
+         * verification.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityForOriginationEnd(Date)
+         */
+        public Builder setKeyValidityForConsumptionEnd(Date endDate) {
+            mKeyValidityForConsumptionEnd = endDate;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only for the provided set of purposes.
+         *
+         * <p>This restriction must be specified. There is no default.
+         */
+        public Builder setPurposes(@KeyStoreKeyConstraints.PurposeEnum int purposes) {
+            mPurposes = purposes;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only with the provided padding schemes. Attempts to use
+         * the key with any other padding will be rejected.
+         *
+         * <p>This restriction must be specified for keys which are used for encryption/decryption.
+         */
+        public Builder setPaddings(@KeyStoreKeyConstraints.PaddingEnum int paddings) {
+            mPaddings = paddings;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only with the provided block modes. Attempts to use the
+         * key with any other block modes will be rejected.
+         *
+         * <p>This restriction must be specified for keys which are used for encryption/decryption.
+         */
+        public Builder setBlockModes(@KeyStoreKeyConstraints.BlockModeEnum int blockModes) {
+            mBlockModes = blockModes;
+            return this;
+        }
+
+        /**
+         * Sets the user authenticators which protect access to this key. The key can only be used
+         * iff the user has authenticated to at least one of these user authenticators.
+         *
+         * <p>By default, the key can be used without user authentication.
+         *
+         * @param userAuthenticators user authenticators or empty list if this key can be accessed
+         *        without user authentication.
+         *
+         * @see #setUserAuthenticationValidityDurationSeconds(int)
+         */
+        public Builder setUserAuthenticators(
+                @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators) {
+            mUserAuthenticators = userAuthenticators;
+            return this;
+        }
+
+        /**
+         * Sets the duration of time (seconds) for which this key can be used after the user
+         * successfully authenticates to one of the associated user authenticators.
+         *
+         * <p>By default, the user needs to authenticate for every use of the key.
+         *
+         * @param seconds duration in seconds or {@code 0} if the user needs to authenticate for
+         *        every use of the key.
+         *
+         * @see #setUserAuthenticators(int)
+         */
+        public Builder setUserAuthenticationValidityDurationSeconds(int seconds) {
+            mUserAuthenticationValidityDurationSeconds = seconds;
+            return this;
+        }
+
+        /**
+         * Builds a new instance instance of {@code KeyGeneratorSpec}.
+         *
+         * @throws IllegalArgumentException if a required field is missing or violates a constraint.
+         */
+        public KeyGeneratorSpec build() {
+            return new KeyGeneratorSpec(mContext,
+                    mKeystoreAlias,
+                    mFlags,
+                    mKeySize,
+                    mKeyValidityStart,
+                    mKeyValidityForOriginationEnd,
+                    mKeyValidityForConsumptionEnd,
+                    mPurposes,
+                    mPaddings,
+                    mBlockModes,
+                    mUserAuthenticators,
+                    mUserAuthenticationValidityDurationSeconds);
+        }
+    }
+}
diff --git a/keystore/java/android/security/KeyNotYetValidException.java b/keystore/java/android/security/KeyNotYetValidException.java
new file mode 100644
index 0000000..f1c2cac
--- /dev/null
+++ b/keystore/java/android/security/KeyNotYetValidException.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Indicates that a cryptographic operation failed because the employed key's validity start date
+ * is in the future.
+ *
+ * @hide
+ */
+public class KeyNotYetValidException extends CryptoOperationException {
+
+    /**
+     * Constructs a new {@code KeyNotYetValidException} without detail message and cause.
+     */
+    public KeyNotYetValidException() {
+        super("Key not yet valid");
+    }
+
+    /**
+     * Constructs a new {@code KeyNotYetValidException} with the provided detail message and no
+     * cause.
+     */
+    public KeyNotYetValidException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new {@code KeyNotYetValidException} with the provided detail message and cause.
+     */
+    public KeyNotYetValidException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/keystore/java/android/security/KeyPairGeneratorSpec.java b/keystore/java/android/security/KeyPairGeneratorSpec.java
index cc097aa..edaa9a54 100644
--- a/keystore/java/android/security/KeyPairGeneratorSpec.java
+++ b/keystore/java/android/security/KeyPairGeneratorSpec.java
@@ -72,6 +72,24 @@
 
     private final int mFlags;
 
+    private final Date mKeyValidityStart;
+
+    private final Date mKeyValidityForOriginationEnd;
+
+    private final Date mKeyValidityForConsumptionEnd;
+
+    private final @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+
+    private final @KeyStoreKeyConstraints.DigestEnum int mDigests;
+
+    private final @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+
+    private final @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+
+    private final @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+
+    private final int mUserAuthenticationValidityDurationSeconds;
+
     /**
      * Parameter specification for the "{@code AndroidKeyPairGenerator}"
      * instance of the {@link java.security.KeyPairGenerator} API. The
@@ -106,7 +124,16 @@
      */
     public KeyPairGeneratorSpec(Context context, String keyStoreAlias, String keyType, int keySize,
             AlgorithmParameterSpec spec, X500Principal subjectDN, BigInteger serialNumber,
-            Date startDate, Date endDate, int flags) {
+            Date startDate, Date endDate, int flags,
+            Date keyValidityStart,
+            Date keyValidityForOriginationEnd,
+            Date keyValidityForConsumptionEnd,
+            @KeyStoreKeyConstraints.PurposeEnum int purposes,
+            @KeyStoreKeyConstraints.DigestEnum int digests,
+            @KeyStoreKeyConstraints.PaddingEnum int paddings,
+            @KeyStoreKeyConstraints.BlockModeEnum int blockModes,
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators,
+            int userAuthenticationValidityDurationSeconds) {
         if (context == null) {
             throw new IllegalArgumentException("context == null");
         } else if (TextUtils.isEmpty(keyStoreAlias)) {
@@ -121,6 +148,10 @@
             throw new IllegalArgumentException("endDate == null");
         } else if (endDate.before(startDate)) {
             throw new IllegalArgumentException("endDate < startDate");
+        } else if ((userAuthenticationValidityDurationSeconds < 0)
+                && (userAuthenticationValidityDurationSeconds != -1)) {
+            throw new IllegalArgumentException(
+                    "userAuthenticationValidityDurationSeconds must not be negative");
         }
 
         mContext = context;
@@ -133,6 +164,26 @@
         mStartDate = startDate;
         mEndDate = endDate;
         mFlags = flags;
+        mKeyValidityStart = keyValidityStart;
+        mKeyValidityForOriginationEnd = keyValidityForOriginationEnd;
+        mKeyValidityForConsumptionEnd = keyValidityForConsumptionEnd;
+        mPurposes = purposes;
+        mDigests = digests;
+        mPaddings = paddings;
+        mBlockModes = blockModes;
+        mUserAuthenticators = userAuthenticators;
+        mUserAuthenticationValidityDurationSeconds = userAuthenticationValidityDurationSeconds;
+    }
+
+    /**
+     * TODO: Remove this constructor once tests are switched over to the new one above.
+     * @hide
+     */
+    public KeyPairGeneratorSpec(Context context, String keyStoreAlias, String keyType, int keySize,
+            AlgorithmParameterSpec spec, X500Principal subjectDN, BigInteger serialNumber,
+            Date startDate, Date endDate, int flags) {
+        this(context, keyStoreAlias, keyType, keySize, spec, subjectDN, serialNumber, startDate,
+                endDate, flags, startDate, endDate, endDate, 0, 0, 0, 0, 0, -1);
     }
 
     /**
@@ -222,6 +273,107 @@
     }
 
     /**
+     * Gets the time instant before which the key pair is not yet valid.
+     *
+     * @return instant or {@code null} if not restricted.
+     *
+     * @hide
+     */
+    public Date getKeyValidityStart() {
+        return mKeyValidityStart;
+    }
+
+    /**
+     * Gets the time instant after which the key pair is no longer valid for decryption and
+     * verification.
+     *
+     * @return instant or {@code null} if not restricted.
+     *
+     * @hide
+     */
+    public Date getKeyValidityForConsumptionEnd() {
+        return mKeyValidityForConsumptionEnd;
+    }
+
+    /**
+     * Gets the time instant after which the key pair is no longer valid for encryption and signing.
+     *
+     * @return instant or {@code null} if not restricted.
+     *
+     * @hide
+     */
+    public Date getKeyValidityForOriginationEnd() {
+        return mKeyValidityForOriginationEnd;
+    }
+
+    /**
+     * Gets the set of purposes for which the key can be used.
+     *
+     * @hide
+     */
+    public @KeyStoreKeyConstraints.PurposeEnum int getPurposes() {
+        return mPurposes;
+    }
+
+    /**
+     * Gets the set of digests to which the key is restricted.
+     *
+     * @hide
+     */
+    public @KeyStoreKeyConstraints.DigestEnum int getDigests() {
+        return mDigests;
+    }
+
+    /**
+     * Gets the set of padding schemes to which the key is restricted.
+     *
+     * @hide
+     */
+    public @KeyStoreKeyConstraints.PaddingEnum int getPaddings() {
+        return mPaddings;
+    }
+
+    /**
+     * Gets the set of block modes to which the key is restricted.
+     *
+     * @hide
+     */
+    public @KeyStoreKeyConstraints.BlockModeEnum int getBlockModes() {
+        return mBlockModes;
+    }
+
+    /**
+     * Gets the set of user authenticators which protect access to the private key. The key can only
+     * be used iff the user has authenticated to at least one of these user authenticators.
+     *
+     * <p>This restriction applies only to private key operations. Public key operations are not
+     * restricted.
+     *
+     * @return user authenticators or {@code 0} if the key can be used without user authentication.
+     *
+     * @hide
+     */
+    public @KeyStoreKeyConstraints.UserAuthenticatorEnum int getUserAuthenticators() {
+        return mUserAuthenticators;
+    }
+
+    /**
+     * Gets the duration of time (seconds) for which the private key can be used after the user
+     * successfully authenticates to one of the associated user authenticators.
+     *
+     * <p>This restriction applies only to private key operations. Public key operations are not
+     * restricted.
+     *
+     * @return duration in seconds or {@code -1} if not restricted. {@code 0} means authentication
+     *         is required for every use of the key.
+     *
+     * @hide
+     */
+    public int getUserAuthenticationValidityDurationSeconds() {
+        return mUserAuthenticationValidityDurationSeconds;
+    }
+
+    /**
      * Builder class for {@link KeyPairGeneratorSpec} objects.
      * <p>
      * This will build a parameter spec for use with the <a href="{@docRoot}
@@ -263,6 +415,24 @@
 
         private int mFlags;
 
+        private Date mKeyValidityStart;
+
+        private Date mKeyValidityForOriginationEnd;
+
+        private Date mKeyValidityForConsumptionEnd;
+
+        private @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+
+        private @KeyStoreKeyConstraints.DigestEnum int mDigests;
+
+        private @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+
+        private @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+
+        private @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+
+        private int mUserAuthenticationValidityDurationSeconds = -1;
+
         /**
          * Creates a new instance of the {@code Builder} with the given
          * {@code context}. The {@code context} passed in may be used to pop up
@@ -389,14 +559,185 @@
         }
 
         /**
+         * Sets the time instant before which the key is not yet valid.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityEnd(Date)
+         *
+         * @hide
+         */
+        public Builder setKeyValidityStart(Date startDate) {
+            mKeyValidityStart = startDate;
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityStart(Date)
+         * @see #setKeyValidityForConsumptionEnd(Date)
+         * @see #setKeyValidityForOriginationEnd(Date)
+         *
+         * @hide
+         */
+        public Builder setKeyValidityEnd(Date endDate) {
+            setKeyValidityForOriginationEnd(endDate);
+            setKeyValidityForConsumptionEnd(endDate);
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid for encryption and signing.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityForConsumptionEnd(Date)
+         *
+         * @hide
+         */
+        public Builder setKeyValidityForOriginationEnd(Date endDate) {
+            mKeyValidityForOriginationEnd = endDate;
+            return this;
+        }
+
+        /**
+         * Sets the time instant after which the key is no longer valid for decryption and
+         * verification.
+         *
+         * <b>By default, the key is valid at any instant.
+         *
+         * @see #setKeyValidityForOriginationEnd(Date)
+         *
+         * @hide
+         */
+        public Builder setKeyValidityForConsumptionEnd(Date endDate) {
+            mKeyValidityForConsumptionEnd = endDate;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only for the provided set of purposes.
+         *
+         * <p>This restriction must be specified. There is no default.
+         *
+         * @hide
+         */
+        public Builder setPurposes(@KeyStoreKeyConstraints.PurposeEnum int purposes) {
+            mPurposes = purposes;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only with the provided digests. Attempts to use the key
+         * with any other digests be rejected.
+         *
+         * <p>This restriction must be specified for keys which are used for signing/verification.
+         *
+         * @hide
+         */
+        public Builder setDigests(@KeyStoreKeyConstraints.DigestEnum int digests) {
+            mDigests = digests;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only with the provided padding schemes. Attempts to use
+         * the key with any other padding will be rejected.
+         *
+         * <p>This restriction must be specified for keys which are used for encryption/decryption.
+         *
+         * @hide
+         */
+        public Builder setPaddings(@KeyStoreKeyConstraints.PaddingEnum int paddings) {
+            mPaddings = paddings;
+            return this;
+        }
+
+        /**
+         * Restricts the key to being used only with the provided block mode when encrypting or
+         * decrypting. Attempts to use the key with any other block modes will be rejected.
+         *
+         * <p>This restriction must be specified for keys which are used for encryption/decryption.
+         *
+         * @hide
+         */
+        public Builder setBlockModes(@KeyStoreKeyConstraints.BlockModeEnum int blockModes) {
+            mBlockModes = blockModes;
+            return this;
+        }
+
+        /**
+         * Sets the user authenticators which protect access to this key. The key can only be used
+         * iff the user has authenticated to at least one of these user authenticators.
+         *
+         * <p>By default, the key can be used without user authentication.
+         *
+         * <p>This restriction applies only to private key operations. Public key operations are not
+         * restricted.
+         *
+         * @param userAuthenticators user authenticators or {@code 0} if this key can be accessed
+         *        without user authentication.
+         *
+         * @see #setUserAuthenticationValidityDurationSeconds(int)
+         *
+         * @hide
+         */
+        public Builder setUserAuthenticators(
+                @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators) {
+            mUserAuthenticators = userAuthenticators;
+            return this;
+        }
+
+        /**
+         * Sets the duration of time (seconds) for which this key can be used after the user
+         * successfully authenticates to one of the associated user authenticators.
+         *
+         * <p>By default, the user needs to authenticate for every use of the key.
+         *
+         * <p>This restriction applies only to private key operations. Public key operations are not
+         * restricted.
+         *
+         * @param seconds duration in seconds or {@code 0} if the user needs to authenticate for
+         *        every use of the key.
+         *
+         * @see #setUserAuthenticators(int)
+         *
+         * @hide
+         */
+        public Builder setUserAuthenticationValidityDurationSeconds(int seconds) {
+            mUserAuthenticationValidityDurationSeconds = seconds;
+            return this;
+        }
+
+        /**
          * Builds the instance of the {@code KeyPairGeneratorSpec}.
          *
          * @throws IllegalArgumentException if a required field is missing
          * @return built instance of {@code KeyPairGeneratorSpec}
          */
         public KeyPairGeneratorSpec build() {
-            return new KeyPairGeneratorSpec(mContext, mKeystoreAlias, mKeyType, mKeySize, mSpec,
-                    mSubjectDN, mSerialNumber, mStartDate, mEndDate, mFlags);
+            return new KeyPairGeneratorSpec(mContext,
+                    mKeystoreAlias,
+                    mKeyType,
+                    mKeySize,
+                    mSpec,
+                    mSubjectDN,
+                    mSerialNumber,
+                    mStartDate,
+                    mEndDate,
+                    mFlags,
+                    mKeyValidityStart,
+                    mKeyValidityForOriginationEnd,
+                    mKeyValidityForConsumptionEnd,
+                    mPurposes,
+                    mDigests,
+                    mPaddings,
+                    mBlockModes,
+                    mUserAuthenticators,
+                    mUserAuthenticationValidityDurationSeconds);
         }
     }
 }
diff --git a/keystore/java/android/security/KeyStore.java b/keystore/java/android/security/KeyStore.java
index f68b3f6..84a664e 100644
--- a/keystore/java/android/security/KeyStore.java
+++ b/keystore/java/android/security/KeyStore.java
@@ -26,6 +26,7 @@
 import android.security.keymaster.KeyCharacteristics;
 import android.security.keymaster.KeymasterArguments;
 import android.security.keymaster.KeymasterBlob;
+import android.security.keymaster.KeymasterDefs;
 import android.security.keymaster.OperationResult;
 import android.util.Log;
 
@@ -476,4 +477,87 @@
             return SYSTEM_ERROR;
         }
     }
+
+    /**
+     * Check if the operation referenced by {@code token} is currently authorized.
+     *
+     * @param token An operation token returned by a call to {@link KeyStore.begin}.
+     */
+    public boolean isOperationAuthorized(IBinder token) {
+        try {
+            return mBinder.isOperationAuthorized(token);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Cannot connect to keystore", e);
+            return false;
+        }
+    }
+
+    /**
+     * Add an authentication record to the keystore authorization table.
+     *
+     * @param authToken The packed bytes of a hw_auth_token_t to be provided to keymaster.
+     * @return {@code KeyStore.NO_ERROR} on success, otherwise an error value corresponding to
+     * a {@code KeymasterDefs.KM_ERROR_} value or {@code KeyStore} ResponseCode.
+     */
+    public int addAuthToken(byte[] authToken) {
+        try {
+            return mBinder.addAuthToken(authToken);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Cannot connect to keystore", e);
+            return SYSTEM_ERROR;
+        }
+    }
+
+    public static KeyStoreException getKeyStoreException(int errorCode) {
+        if (errorCode > 0) {
+            // KeyStore layer error
+            switch (errorCode) {
+                case NO_ERROR:
+                    return new KeyStoreException(errorCode, "OK");
+                case LOCKED:
+                    return new KeyStoreException(errorCode, "Keystore locked");
+                case UNINITIALIZED:
+                    return new KeyStoreException(errorCode, "Keystore not initialized");
+                case SYSTEM_ERROR:
+                    return new KeyStoreException(errorCode, "System error");
+                case PERMISSION_DENIED:
+                    return new KeyStoreException(errorCode, "Permission denied");
+                case KEY_NOT_FOUND:
+                    return new KeyStoreException(errorCode, "Key not found");
+                case VALUE_CORRUPTED:
+                    return new KeyStoreException(errorCode, "Key blob corrupted");
+                default:
+                    return new KeyStoreException(errorCode, String.valueOf(errorCode));
+            }
+        } else {
+            // Keymaster layer error
+            switch (errorCode) {
+                case KeymasterDefs.KM_ERROR_INVALID_AUTHORIZATION_TIMEOUT:
+                    // The name of this parameter significantly differs between Keymaster and
+                    // framework APIs. Use the framework wording to make life easier for developers.
+                    return new KeyStoreException(errorCode,
+                            "Invalid user authentication validity duration");
+                default:
+                    return new KeyStoreException(errorCode,
+                            KeymasterDefs.getErrorMessage(errorCode));
+            }
+        }
+    }
+
+    public static CryptoOperationException getCryptoOperationException(KeyStoreException e) {
+        switch (e.getErrorCode()) {
+            case KeymasterDefs.KM_ERROR_KEY_EXPIRED:
+                return new KeyExpiredException();
+            case KeymasterDefs.KM_ERROR_KEY_NOT_YET_VALID:
+                return new KeyNotYetValidException();
+            case KeymasterDefs.KM_ERROR_KEY_USER_NOT_AUTHENTICATED:
+                return new UserNotAuthenticatedException();
+            default:
+                return new CryptoOperationException("Crypto operation failed", e);
+        }
+    }
+
+    public static CryptoOperationException getCryptoOperationException(int errorCode) {
+        return getCryptoOperationException(getKeyStoreException(errorCode));
+    }
 }
diff --git a/keystore/java/android/security/KeyStoreCipherSpi.java b/keystore/java/android/security/KeyStoreCipherSpi.java
new file mode 100644
index 0000000..487eac0
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreCipherSpi.java
@@ -0,0 +1,603 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.os.IBinder;
+import android.security.keymaster.KeymasterArguments;
+import android.security.keymaster.KeymasterDefs;
+import android.security.keymaster.OperationResult;
+
+import java.security.AlgorithmParameters;
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+import java.security.spec.InvalidParameterSpecException;
+import java.util.Arrays;
+
+import javax.crypto.AEADBadTagException;
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.CipherSpi;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.ShortBufferException;
+import javax.crypto.spec.IvParameterSpec;
+
+/**
+ * Base class for {@link CipherSpi} providing Android KeyStore backed ciphers.
+ *
+ * @hide
+ */
+public abstract class KeyStoreCipherSpi extends CipherSpi implements KeyStoreCryptoOperation {
+
+    public abstract static class AES extends KeyStoreCipherSpi {
+        protected AES(@KeyStoreKeyConstraints.BlockModeEnum int blockMode,
+                @KeyStoreKeyConstraints.PaddingEnum int padding, boolean ivUsed) {
+            super(KeyStoreKeyConstraints.Algorithm.AES,
+                    blockMode,
+                    padding,
+                    16,
+                    ivUsed);
+        }
+
+        public abstract static class ECB extends AES {
+            protected ECB(@KeyStoreKeyConstraints.PaddingEnum int padding) {
+                super(KeyStoreKeyConstraints.BlockMode.ECB, padding, false);
+            }
+
+            public static class NoPadding extends ECB {
+                public NoPadding() {
+                    super(KeyStoreKeyConstraints.Padding.NONE);
+                }
+            }
+
+            public static class PKCS7Padding extends ECB {
+                public PKCS7Padding() {
+                    super(KeyStoreKeyConstraints.Padding.PKCS7);
+                }
+            }
+        }
+
+        public abstract static class CBC extends AES {
+            protected CBC(@KeyStoreKeyConstraints.BlockModeEnum int padding) {
+                super(KeyStoreKeyConstraints.BlockMode.CBC, padding, true);
+            }
+
+            public static class NoPadding extends CBC {
+                public NoPadding() {
+                    super(KeyStoreKeyConstraints.Padding.NONE);
+                }
+            }
+
+            public static class PKCS7Padding extends CBC {
+                public PKCS7Padding() {
+                    super(KeyStoreKeyConstraints.Padding.PKCS7);
+                }
+            }
+        }
+
+        public abstract static class CTR extends AES {
+            protected CTR(@KeyStoreKeyConstraints.BlockModeEnum int padding) {
+                super(KeyStoreKeyConstraints.BlockMode.CTR, padding, true);
+            }
+
+            public static class NoPadding extends CTR {
+                public NoPadding() {
+                    super(KeyStoreKeyConstraints.Padding.NONE);
+                }
+            }
+        }
+    }
+
+    private final KeyStore mKeyStore;
+    private final @KeyStoreKeyConstraints.AlgorithmEnum int mAlgorithm;
+    private final @KeyStoreKeyConstraints.BlockModeEnum int mBlockMode;
+    private final @KeyStoreKeyConstraints.PaddingEnum int mPadding;
+    private final int mBlockSizeBytes;
+
+    /** Whether this transformation requires an IV. */
+    private final boolean mIvRequired;
+
+    // Fields below are populated by Cipher.init and KeyStore.begin and should be preserved after
+    // doFinal finishes.
+    protected boolean mEncrypting;
+    private KeyStoreSecretKey mKey;
+    private SecureRandom mRng;
+    private boolean mFirstOperationInitiated;
+    private byte[] mIv;
+    /** Whether the current {@code #mIv} has been used by the underlying crypto operation. */
+    private boolean mIvHasBeenUsed;
+
+    // Fields below must be reset after doFinal
+    private byte[] mAdditionalEntropyForBegin;
+
+    /**
+     * Token referencing this operation inside keystore service. It is initialized by
+     * {@code engineInit} and is invalidated when {@code engineDoFinal} succeeds and one some
+     * error conditions in between.
+     */
+    private IBinder mOperationToken;
+    private Long mOperationHandle;
+    private KeyStoreCryptoOperationChunkedStreamer mMainDataStreamer;
+
+    protected KeyStoreCipherSpi(
+            @KeyStoreKeyConstraints.AlgorithmEnum int algorithm,
+            @KeyStoreKeyConstraints.BlockModeEnum int blockMode,
+            @KeyStoreKeyConstraints.PaddingEnum int padding,
+            int blockSizeBytes,
+            boolean ivUsed) {
+        mKeyStore = KeyStore.getInstance();
+        mAlgorithm = algorithm;
+        mBlockMode = blockMode;
+        mPadding = padding;
+        mBlockSizeBytes = blockSizeBytes;
+        mIvRequired = ivUsed;
+    }
+
+    @Override
+    protected void engineInit(int opmode, Key key, SecureRandom random) throws InvalidKeyException {
+        init(opmode, key, random);
+        initAlgorithmSpecificParameters();
+        ensureKeystoreOperationInitialized();
+    }
+
+    @Override
+    protected void engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom random)
+            throws InvalidKeyException, InvalidAlgorithmParameterException {
+        init(opmode, key, random);
+        initAlgorithmSpecificParameters(params);
+        ensureKeystoreOperationInitialized();
+    }
+
+    @Override
+    protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params,
+            SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
+        init(opmode, key, random);
+        initAlgorithmSpecificParameters(params);
+        ensureKeystoreOperationInitialized();
+    }
+
+    private void init(int opmode, Key key, SecureRandom random) throws InvalidKeyException {
+        resetAll();
+        if (!(key instanceof KeyStoreSecretKey)) {
+            throw new InvalidKeyException(
+                    "Unsupported key: " + ((key != null) ? key.getClass().getName() : "null"));
+        }
+        mKey = (KeyStoreSecretKey) key;
+        mRng = random;
+        mIv = null;
+        mFirstOperationInitiated = false;
+
+        if ((opmode != Cipher.ENCRYPT_MODE) && (opmode != Cipher.DECRYPT_MODE)) {
+            throw new UnsupportedOperationException(
+                    "Only ENCRYPT and DECRYPT modes supported. Mode: " + opmode);
+        }
+        mEncrypting = opmode == Cipher.ENCRYPT_MODE;
+    }
+
+    private void resetAll() {
+        IBinder operationToken = mOperationToken;
+        if (operationToken != null) {
+            mOperationToken = null;
+            mKeyStore.abort(operationToken);
+        }
+        mEncrypting = false;
+        mKey = null;
+        mRng = null;
+        mFirstOperationInitiated = false;
+        mIv = null;
+        mIvHasBeenUsed = false;
+        mAdditionalEntropyForBegin = null;
+        mOperationToken = null;
+        mOperationHandle = null;
+        mMainDataStreamer = null;
+    }
+
+    private void resetWhilePreservingInitState() {
+        IBinder operationToken = mOperationToken;
+        if (operationToken != null) {
+            mOperationToken = null;
+            mKeyStore.abort(operationToken);
+        }
+        mOperationHandle = null;
+        mMainDataStreamer = null;
+        mAdditionalEntropyForBegin = null;
+    }
+
+    private void ensureKeystoreOperationInitialized() {
+        if (mMainDataStreamer != null) {
+            return;
+        }
+        if (mKey == null) {
+            throw new IllegalStateException("Not initialized");
+        }
+        if ((mEncrypting) && (mIvRequired) && (mIvHasBeenUsed)) {
+            // IV is being reused for encryption: this violates security best practices.
+            throw new IllegalStateException(
+                    "IV has already been used. Reusing IV in encryption mode violates security best"
+                    + " practices.");
+        }
+
+        KeymasterArguments keymasterInputArgs = new KeymasterArguments();
+        keymasterInputArgs.addInt(KeymasterDefs.KM_TAG_ALGORITHM, mAlgorithm);
+        keymasterInputArgs.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, mBlockMode);
+        keymasterInputArgs.addInt(KeymasterDefs.KM_TAG_PADDING, mPadding);
+        addAlgorithmSpecificParametersToBegin(keymasterInputArgs);
+
+        KeymasterArguments keymasterOutputArgs = new KeymasterArguments();
+        OperationResult opResult = mKeyStore.begin(
+                mKey.getAlias(),
+                mEncrypting ? KeymasterDefs.KM_PURPOSE_ENCRYPT : KeymasterDefs.KM_PURPOSE_DECRYPT,
+                true, // permit aborting this operation if keystore runs out of resources
+                keymasterInputArgs,
+                mAdditionalEntropyForBegin,
+                keymasterOutputArgs);
+        mAdditionalEntropyForBegin = null;
+        if (opResult == null) {
+            throw new KeyStoreConnectException();
+        } else if (opResult.resultCode != KeyStore.NO_ERROR) {
+            throw KeyStore.getCryptoOperationException(opResult.resultCode);
+        }
+
+        if (opResult.token == null) {
+            throw new CryptoOperationException("Keystore returned null operation token");
+        }
+        mOperationToken = opResult.token;
+        mOperationHandle = opResult.operationHandle;
+        loadAlgorithmSpecificParametersFromBeginResult(keymasterOutputArgs);
+        mFirstOperationInitiated = true;
+        mIvHasBeenUsed = true;
+        mMainDataStreamer = new KeyStoreCryptoOperationChunkedStreamer(
+                new KeyStoreCryptoOperationChunkedStreamer.MainDataStream(
+                        mKeyStore, opResult.token));
+    }
+
+    @Override
+    protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen) {
+        ensureKeystoreOperationInitialized();
+
+        if (inputLen == 0) {
+            return null;
+        }
+
+        byte[] output;
+        try {
+            output = mMainDataStreamer.update(input, inputOffset, inputLen);
+        } catch (KeyStoreException e) {
+            throw KeyStore.getCryptoOperationException(e);
+        }
+
+        if (output.length == 0) {
+            return null;
+        }
+
+        return output;
+    }
+
+    @Override
+    protected int engineUpdate(byte[] input, int inputOffset, int inputLen, byte[] output,
+            int outputOffset) throws ShortBufferException {
+        byte[] outputCopy = engineUpdate(input, inputOffset, inputLen);
+        if (outputCopy == null) {
+            return 0;
+        }
+        int outputAvailable = output.length - outputOffset;
+        if (outputCopy.length > outputAvailable) {
+            throw new ShortBufferException("Output buffer too short. Produced: "
+                    + outputCopy.length + ", available: " + outputAvailable);
+        }
+        System.arraycopy(outputCopy, 0, output, outputOffset, outputCopy.length);
+        return outputCopy.length;
+    }
+
+    @Override
+    protected byte[] engineDoFinal(byte[] input, int inputOffset, int inputLen)
+            throws IllegalBlockSizeException, BadPaddingException {
+        ensureKeystoreOperationInitialized();
+
+        byte[] output;
+        try {
+            output = mMainDataStreamer.doFinal(input, inputOffset, inputLen);
+        } catch (KeyStoreException e) {
+            switch (e.getErrorCode()) {
+                case KeymasterDefs.KM_ERROR_INVALID_INPUT_LENGTH:
+                    throw new IllegalBlockSizeException();
+                case KeymasterDefs.KM_ERROR_INVALID_ARGUMENT:
+                    throw new BadPaddingException();
+                case KeymasterDefs.KM_ERROR_VERIFICATION_FAILED:
+                    throw new AEADBadTagException();
+                default:
+                    throw KeyStore.getCryptoOperationException(e);
+            }
+        }
+
+        resetWhilePreservingInitState();
+        return output;
+    }
+
+    @Override
+    protected int engineDoFinal(byte[] input, int inputOffset, int inputLen, byte[] output,
+            int outputOffset) throws ShortBufferException, IllegalBlockSizeException,
+            BadPaddingException {
+        byte[] outputCopy = engineDoFinal(input, inputOffset, inputLen);
+        if (outputCopy == null) {
+            return 0;
+        }
+        int outputAvailable = output.length - outputOffset;
+        if (outputCopy.length > outputAvailable) {
+            throw new ShortBufferException("Output buffer too short. Produced: "
+                    + outputCopy.length + ", available: " + outputAvailable);
+        }
+        System.arraycopy(outputCopy, 0, output, outputOffset, outputCopy.length);
+        return outputCopy.length;
+    }
+
+    @Override
+    protected int engineGetBlockSize() {
+        return mBlockSizeBytes;
+    }
+
+    @Override
+    protected byte[] engineGetIV() {
+        return (mIv != null) ? mIv.clone() : null;
+    }
+
+    @Override
+    protected int engineGetOutputSize(int inputLen) {
+        return inputLen + 3 * engineGetBlockSize();
+    }
+
+    @Override
+    protected void engineSetMode(String mode) throws NoSuchAlgorithmException {
+        // This should never be invoked because all algorithms registered with the AndroidKeyStore
+        // provide explicitly specify block mode.
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void engineSetPadding(String arg0) throws NoSuchPaddingException {
+        // This should never be invoked because all algorithms registered with the AndroidKeyStore
+        // provide explicitly specify padding mode.
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public void finalize() throws Throwable {
+        try {
+            IBinder operationToken = mOperationToken;
+            if (operationToken != null) {
+                mKeyStore.abort(operationToken);
+            }
+        } finally {
+            super.finalize();
+        }
+    }
+
+    @Override
+    public Long getOperationHandle() {
+        return mOperationHandle;
+    }
+
+    // The methods below may need to be overridden by subclasses that use algorithm-specific
+    // parameters.
+
+    /**
+     * Returns algorithm-specific parameters used by this {@code CipherSpi} instance or {@code null}
+     * if no algorithm-specific parameters are used.
+     *
+     * <p>This implementation only handles the IV parameter.
+     */
+    @Override
+    protected AlgorithmParameters engineGetParameters() {
+        if (!mIvRequired) {
+            return null;
+        }
+        if ((mIv != null) && (mIv.length > 0)) {
+            try {
+                AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
+                params.init(new IvParameterSpec(mIv));
+                return params;
+            } catch (NoSuchAlgorithmException e) {
+                throw new RuntimeException("Failed to obtain AES AlgorithmParameters", e);
+            } catch (InvalidParameterSpecException e) {
+                throw new RuntimeException(
+                        "Failed to initialize AES AlgorithmParameters with an IV", e);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Invoked by {@code engineInit} to initialize algorithm-specific parameters. These parameters
+     * may need to be stored to be reused after {@code doFinal}.
+     *
+     * <p>The default implementation only handles the IV parameters.
+     *
+     * @param params algorithm parameters.
+     *
+     * @throws InvalidAlgorithmParameterException if some/all of the parameters cannot be
+     *         automatically configured and thus {@code Cipher.init} needs to be invoked with
+     *         explicitly provided parameters.
+     */
+    protected void initAlgorithmSpecificParameters(AlgorithmParameterSpec params)
+            throws InvalidAlgorithmParameterException {
+        if (!mIvRequired) {
+            if (params != null) {
+                throw new InvalidAlgorithmParameterException("Unsupported parameters: " + params);
+            }
+            return;
+        }
+
+        // IV is used
+        if (params == null) {
+            if (!mEncrypting) {
+                // IV must be provided by the caller
+                throw new InvalidAlgorithmParameterException(
+                        "IvParameterSpec must be provided when decrypting");
+            }
+            return;
+        }
+        if (!(params instanceof IvParameterSpec)) {
+            throw new InvalidAlgorithmParameterException("Only IvParameterSpec supported");
+        }
+        mIv = ((IvParameterSpec) params).getIV();
+        if (mIv == null) {
+            throw new InvalidAlgorithmParameterException("Null IV in IvParameterSpec");
+        }
+    }
+
+    /**
+     * Invoked by {@code engineInit} to initialize algorithm-specific parameters. These parameters
+     * may need to be stored to be reused after {@code doFinal}.
+     *
+     * <p>The default implementation only handles the IV parameters.
+     *
+     * @param params algorithm parameters.
+     *
+     * @throws InvalidAlgorithmParameterException if some/all of the parameters cannot be
+     *         automatically configured and thus {@code Cipher.init} needs to be invoked with
+     *         explicitly provided parameters.
+     */
+    protected void initAlgorithmSpecificParameters(AlgorithmParameters params)
+            throws InvalidAlgorithmParameterException {
+        if (!mIvRequired) {
+            if (params != null) {
+                throw new InvalidAlgorithmParameterException("Unsupported parameters: " + params);
+            }
+            return;
+        }
+
+        // IV is used
+        if (params == null) {
+            if (!mEncrypting) {
+                // IV must be provided by the caller
+                throw new InvalidAlgorithmParameterException("IV required when decrypting"
+                        + ". Use IvParameterSpec or AlgorithmParameters to provide it.");
+            }
+            return;
+        }
+
+        IvParameterSpec ivSpec;
+        try {
+            ivSpec = params.getParameterSpec(IvParameterSpec.class);
+        } catch (InvalidParameterSpecException e) {
+            if (!mEncrypting) {
+                // IV must be provided by the caller
+                throw new InvalidAlgorithmParameterException("IV required when decrypting"
+                        + ", but not found in parameters: " + params, e);
+            }
+            mIv = null;
+            return;
+        }
+        mIv = ivSpec.getIV();
+        if (mIv == null) {
+            throw new InvalidAlgorithmParameterException("Null IV in AlgorithmParameters");
+        }
+    }
+
+    /**
+     * Invoked by {@code engineInit} to initialize algorithm-specific parameters. These parameters
+     * may need to be stored to be reused after {@code doFinal}.
+     *
+     * <p>The default implementation only handles the IV parameter.
+     *
+     * @throws InvalidKeyException if some/all of the parameters cannot be automatically configured
+     *         and thus {@code Cipher.init} needs to be invoked with explicitly provided parameters.
+     */
+    protected void initAlgorithmSpecificParameters() throws InvalidKeyException {
+        if (!mIvRequired) {
+            return;
+        }
+
+        // IV is used
+        if (!mEncrypting) {
+            throw new InvalidKeyException("IV required when decrypting"
+                    + ". Use IvParameterSpec or AlgorithmParameters to provide it.");
+        }
+    }
+
+    /**
+     * Invoked to add algorithm-specific parameters for the KeyStore's {@code begin} operation.
+     *
+     * <p>The default implementation takes care of the IV.
+     *
+     * @param keymasterArgs keystore/keymaster arguments to be populated with algorithm-specific
+     *        parameters.
+     */
+    protected void addAlgorithmSpecificParametersToBegin(KeymasterArguments keymasterArgs) {
+        if (!mFirstOperationInitiated) {
+            // First begin operation -- see if we need to provide additional entropy for IV
+            // generation.
+            if (mIvRequired) {
+                // IV is needed
+                if ((mIv == null) && (mEncrypting)) {
+                    // TODO: Switch to keymaster-generated IV code below once keymaster supports
+                    // that.
+                    // IV is needed but was not provided by the caller -- generate an IV.
+                    mIv = new byte[mBlockSizeBytes];
+                    SecureRandom rng = (mRng != null) ? mRng : new SecureRandom();
+                    rng.nextBytes(mIv);
+//                    // IV was not provided by the caller and thus will be generated by keymaster.
+//                    // Mix in some additional entropy from the provided SecureRandom.
+//                    if (mRng != null) {
+//                        mAdditionalEntropyForBegin = new byte[mBlockSizeBytes];
+//                        mRng.nextBytes(mAdditionalEntropyForBegin);
+//                    }
+                }
+            }
+        }
+
+        if ((mIvRequired) && (mIv != null)) {
+            keymasterArgs.addBlob(KeymasterDefs.KM_TAG_NONCE, mIv);
+        }
+    }
+
+    /**
+     * Invoked by {@code engineInit} to obtain algorithm-specific parameters from the result of the
+     * Keymaster's {@code begin} operation. Some of these parameters may need to be reused after
+     * {@code doFinal} by {@link #addAlgorithmSpecificParametersToBegin(KeymasterArguments)}.
+     *
+     * <p>The default implementation only takes care of the IV.
+     *
+     * @param keymasterArgs keystore/keymaster arguments returned by KeyStore {@code begin}
+     *        operation.
+     */
+    protected void loadAlgorithmSpecificParametersFromBeginResult(
+            KeymasterArguments keymasterArgs) {
+        // NOTE: Keymaster doesn't always return an IV, even if it's used.
+        byte[] returnedIv = keymasterArgs.getBlob(KeymasterDefs.KM_TAG_NONCE, null);
+        if ((returnedIv != null) && (returnedIv.length == 0)) {
+            returnedIv = null;
+        }
+
+        if (mIvRequired) {
+            if (mIv == null) {
+                mIv = returnedIv;
+            } else if ((returnedIv != null) && (!Arrays.equals(returnedIv, mIv))) {
+                throw new CryptoOperationException("IV in use differs from provided IV");
+            }
+        } else {
+            if (returnedIv != null) {
+                throw new CryptoOperationException(
+                        "IV in use despite IV not being used by this transformation");
+            }
+        }
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreConnectException.java b/keystore/java/android/security/KeyStoreConnectException.java
new file mode 100644
index 0000000..8ed6e04
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreConnectException.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Indicates a communications error with keystore service.
+ *
+ * @hide
+ */
+public class KeyStoreConnectException extends CryptoOperationException {
+    public KeyStoreConnectException() {
+        super("Failed to communicate with keystore service");
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreCryptoOperation.java b/keystore/java/android/security/KeyStoreCryptoOperation.java
new file mode 100644
index 0000000..19abd05
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreCryptoOperation.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Cryptographic operation backed by {@link KeyStore}.
+ *
+ * @hide
+ */
+public interface KeyStoreCryptoOperation {
+    /**
+     * Gets the KeyStore operation handle of this crypto operation.
+     *
+     * @return handle or {@code null} if the KeyStore operation is not in progress.
+     */
+    Long getOperationHandle();
+}
diff --git a/keystore/java/android/security/KeyStoreCryptoOperationChunkedStreamer.java b/keystore/java/android/security/KeyStoreCryptoOperationChunkedStreamer.java
new file mode 100644
index 0000000..1f8b7e4
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreCryptoOperationChunkedStreamer.java
@@ -0,0 +1,309 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.os.IBinder;
+import android.security.keymaster.OperationResult;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+/**
+ * Helper for streaming a crypto operation's input and output via {@link KeyStore} service's
+ * {@code update} and {@code finish} operations.
+ *
+ * <p>The helper abstracts away to issues that need to be solved in most code that uses KeyStore's
+ * update and finish operations. Firstly, KeyStore's update operation can consume only a limited
+ * amount of data in one go because the operations are marshalled via Binder. Secondly, the update
+ * operation may consume less data than provided, in which case the caller has to buffer the
+ * remainder for next time. The helper exposes {@link #update(byte[], int, int) update} and
+ * {@link #doFinal(byte[], int, int) doFinal} operations which can be used to conveniently implement
+ * various JCA crypto primitives.
+ *
+ * <p>Bidirectional chunked streaming of data via a KeyStore crypto operation is abstracted away as
+ * a {@link Stream} to avoid having this class deal with operation tokens and occasional additional
+ * parameters to {@code update} and {@code final} operations.
+ *
+ * @hide
+ */
+public class KeyStoreCryptoOperationChunkedStreamer {
+
+    /**
+     * Bidirectional chunked data stream over a KeyStore crypto operation.
+     */
+    public interface Stream {
+        /**
+         * Returns the result of the KeyStore {@code update} operation or null if keystore couldn't
+         * be reached.
+         */
+        OperationResult update(byte[] input);
+
+        /**
+         * Returns the result of the KeyStore {@code finish} operation or null if keystore couldn't
+         * be reached.
+         */
+        OperationResult finish();
+    }
+
+    // Binder buffer is about 1MB, but it's shared between all active transactions of the process.
+    // Thus, it's safer to use a much smaller upper bound.
+    private static final int DEFAULT_MAX_CHUNK_SIZE = 64 * 1024;
+    private static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
+
+    private final Stream mKeyStoreStream;
+    private final int mMaxChunkSize;
+
+    private byte[] mBuffered = EMPTY_BYTE_ARRAY;
+    private int mBufferedOffset;
+    private int mBufferedLength;
+
+    public KeyStoreCryptoOperationChunkedStreamer(Stream operation) {
+        this(operation, DEFAULT_MAX_CHUNK_SIZE);
+    }
+
+    public KeyStoreCryptoOperationChunkedStreamer(Stream operation, int maxChunkSize) {
+        mKeyStoreStream = operation;
+        mMaxChunkSize = maxChunkSize;
+    }
+
+    public byte[] update(byte[] input, int inputOffset, int inputLength) throws KeyStoreException {
+        if (inputLength == 0) {
+            // No input provided
+            return EMPTY_BYTE_ARRAY;
+        }
+
+        ByteArrayOutputStream bufferedOutput = null;
+
+        while (inputLength > 0) {
+            byte[] chunk;
+            int inputBytesInChunk;
+            if ((mBufferedLength + inputLength) > mMaxChunkSize) {
+                // Too much input for one chunk -- extract one max-sized chunk and feed it into the
+                // update operation.
+                inputBytesInChunk = mMaxChunkSize - mBufferedLength;
+                chunk = concat(mBuffered, mBufferedOffset, mBufferedLength,
+                        input, inputOffset, inputBytesInChunk);
+            } else {
+                // All of available input fits into one chunk.
+                if ((mBufferedLength == 0) && (inputOffset == 0)
+                        && (inputLength == input.length)) {
+                    // Nothing buffered and all of input array needs to be fed into the update
+                    // operation.
+                    chunk = input;
+                    inputBytesInChunk = input.length;
+                } else {
+                    // Need to combine buffered data with input data into one array.
+                    inputBytesInChunk = inputLength;
+                    chunk = concat(mBuffered, mBufferedOffset, mBufferedLength,
+                            input, inputOffset, inputBytesInChunk);
+                }
+            }
+            // Update input array references to reflect that some of its bytes are now in mBuffered.
+            inputOffset += inputBytesInChunk;
+            inputLength -= inputBytesInChunk;
+
+            OperationResult opResult = mKeyStoreStream.update(chunk);
+            if (opResult == null) {
+                throw new KeyStoreConnectException();
+            } else if (opResult.resultCode != KeyStore.NO_ERROR) {
+                throw KeyStore.getKeyStoreException(opResult.resultCode);
+            }
+
+            if (opResult.inputConsumed == chunk.length) {
+                // The whole chunk was consumed
+                mBuffered = EMPTY_BYTE_ARRAY;
+                mBufferedOffset = 0;
+                mBufferedLength = 0;
+            } else if (opResult.inputConsumed == 0) {
+                // Nothing was consumed. More input needed.
+                if (inputLength > 0) {
+                    // More input is available, but it wasn't included into the previous chunk
+                    // because the chunk reached its maximum permitted size.
+                    // Shouldn't have happened.
+                    throw new CryptoOperationException("Nothing consumed from max-sized chunk: "
+                            + chunk.length + " bytes");
+                }
+                mBuffered = chunk;
+                mBufferedOffset = 0;
+                mBufferedLength = chunk.length;
+            } else if (opResult.inputConsumed < chunk.length) {
+                // The chunk was consumed only partially -- buffer the rest of the chunk
+                mBuffered = chunk;
+                mBufferedOffset = opResult.inputConsumed;
+                mBufferedLength = chunk.length - opResult.inputConsumed;
+            } else {
+                throw new CryptoOperationException("Consumed more than provided: "
+                        + opResult.inputConsumed + ", provided: " + chunk.length);
+            }
+
+            if ((opResult.output != null) && (opResult.output.length > 0)) {
+                if (inputLength > 0) {
+                    // More output might be produced in this loop -- buffer the current output
+                    if (bufferedOutput == null) {
+                        bufferedOutput = new ByteArrayOutputStream();
+                        try {
+                            bufferedOutput.write(opResult.output);
+                        } catch (IOException e) {
+                            throw new CryptoOperationException("Failed to buffer output", e);
+                        }
+                    }
+                } else {
+                    // No more output will be produced in this loop
+                    if (bufferedOutput == null) {
+                        // No previously buffered output
+                        return opResult.output;
+                    } else {
+                        // There was some previously buffered output
+                        try {
+                            bufferedOutput.write(opResult.output);
+                        } catch (IOException e) {
+                            throw new CryptoOperationException("Failed to buffer output", e);
+                        }
+                        return bufferedOutput.toByteArray();
+                    }
+                }
+            }
+        }
+
+        if (bufferedOutput == null) {
+            // No output produced
+            return EMPTY_BYTE_ARRAY;
+        } else {
+            return bufferedOutput.toByteArray();
+        }
+    }
+
+    public byte[] doFinal(byte[] input, int inputOffset, int inputLength)
+            throws KeyStoreException {
+        if (inputLength == 0) {
+            // No input provided -- simplify the rest of the code
+            input = EMPTY_BYTE_ARRAY;
+            inputOffset = 0;
+        }
+
+        // Flush all buffered input and provided input into keystore/keymaster.
+        byte[] output = update(input, inputOffset, inputLength);
+        output = concat(output, flush());
+
+        OperationResult opResult = mKeyStoreStream.finish();
+        if (opResult == null) {
+            throw new KeyStoreConnectException();
+        } else if (opResult.resultCode != KeyStore.NO_ERROR) {
+            throw KeyStore.getKeyStoreException(opResult.resultCode);
+        }
+
+        return concat(output, opResult.output);
+    }
+
+    /**
+     * Passes all of buffered input into the the KeyStore operation (via the {@code update}
+     * operation) and returns output.
+     */
+    public byte[] flush() throws KeyStoreException {
+        if (mBufferedLength <= 0) {
+            return EMPTY_BYTE_ARRAY;
+        }
+
+        byte[] chunk = subarray(mBuffered, mBufferedOffset, mBufferedLength);
+        mBuffered = EMPTY_BYTE_ARRAY;
+        mBufferedLength = 0;
+        mBufferedOffset = 0;
+
+        OperationResult opResult = mKeyStoreStream.update(chunk);
+        if (opResult == null) {
+            throw new KeyStoreConnectException();
+        } else if (opResult.resultCode != KeyStore.NO_ERROR) {
+            throw KeyStore.getKeyStoreException(opResult.resultCode);
+        }
+
+        if (opResult.inputConsumed < chunk.length) {
+            throw new CryptoOperationException("Keystore failed to consume all input. Provided: "
+                    + chunk.length + ", consumed: " + opResult.inputConsumed);
+        } else if (opResult.inputConsumed > chunk.length) {
+            throw new CryptoOperationException("Keystore consumed more input than provided"
+                    + " . Provided: " + chunk.length + ", consumed: " + opResult.inputConsumed);
+        }
+
+        return (opResult.output != null) ? opResult.output : EMPTY_BYTE_ARRAY;
+    }
+
+    private static byte[] concat(byte[] arr1, byte[] arr2) {
+        if ((arr1 == null) || (arr1.length == 0)) {
+            return arr2;
+        } else if ((arr2 == null) || (arr2.length == 0)) {
+            return arr1;
+        } else {
+            byte[] result = new byte[arr1.length + arr2.length];
+            System.arraycopy(arr1, 0, result, 0, arr1.length);
+            System.arraycopy(arr2, 0, result, arr1.length, arr2.length);
+            return result;
+        }
+    }
+
+    private static byte[] concat(byte[] arr1, int offset1, int len1, byte[] arr2, int offset2,
+            int len2) {
+        if (len1 == 0) {
+            return subarray(arr2, offset2, len2);
+        } else if (len2 == 0) {
+            return subarray(arr1, offset1, len1);
+        } else {
+            byte[] result = new byte[len1 + len2];
+            System.arraycopy(arr1, offset1, result, 0, len1);
+            System.arraycopy(arr2, offset2, result, len1, len2);
+            return result;
+        }
+    }
+
+    private static byte[] subarray(byte[] arr, int offset, int len) {
+        if (len == 0) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        if ((offset == 0) && (len == arr.length)) {
+            return arr;
+        }
+        byte[] result = new byte[len];
+        System.arraycopy(arr, offset, result, 0, len);
+        return result;
+    }
+
+    /**
+     * Main data stream via a KeyStore streaming operation.
+     *
+     * <p>For example, for an encryption operation, this is the stream through which plaintext is
+     * provided and ciphertext is obtained.
+     */
+    public static class MainDataStream implements Stream {
+
+        private final KeyStore mKeyStore;
+        private final IBinder mOperationToken;
+
+        public MainDataStream(KeyStore keyStore, IBinder operationToken) {
+            mKeyStore = keyStore;
+            mOperationToken = operationToken;
+        }
+
+        @Override
+        public OperationResult update(byte[] input) {
+            return mKeyStore.update(mOperationToken, null, input);
+        }
+
+        @Override
+        public OperationResult finish() {
+            return mKeyStore.finish(mOperationToken, null, null);
+        }
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreException.java b/keystore/java/android/security/KeyStoreException.java
new file mode 100644
index 0000000..88e768c
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreException.java
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * KeyStore/keymaster exception with positive error codes coming from the KeyStore and negative
+ * ones from keymaster.
+ *
+ * @hide
+ */
+public class KeyStoreException extends Exception {
+
+    private final int mErrorCode;
+
+    public KeyStoreException(int errorCode, String message) {
+        super(message);
+        mErrorCode = errorCode;
+    }
+
+    public int getErrorCode() {
+        return mErrorCode;
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreHmacSpi.java b/keystore/java/android/security/KeyStoreHmacSpi.java
new file mode 100644
index 0000000..f69e7d1
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreHmacSpi.java
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.os.IBinder;
+import android.security.keymaster.KeymasterArguments;
+import android.security.keymaster.KeymasterDefs;
+import android.security.keymaster.OperationResult;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.spec.AlgorithmParameterSpec;
+
+import javax.crypto.MacSpi;
+
+/**
+ * {@link MacSpi} which provides HMAC implementations backed by Android KeyStore.
+ *
+ * @hide
+ */
+public abstract class KeyStoreHmacSpi extends MacSpi implements KeyStoreCryptoOperation {
+
+    public static class HmacSHA1 extends KeyStoreHmacSpi {
+        public HmacSHA1() {
+            super(KeyStoreKeyConstraints.Digest.SHA1);
+        }
+    }
+
+    public static class HmacSHA224 extends KeyStoreHmacSpi {
+        public HmacSHA224() {
+            super(KeyStoreKeyConstraints.Digest.SHA224);
+        }
+    }
+
+    public static class HmacSHA256 extends KeyStoreHmacSpi {
+        public HmacSHA256() {
+            super(KeyStoreKeyConstraints.Digest.SHA256);
+        }
+    }
+
+    public static class HmacSHA384 extends KeyStoreHmacSpi {
+        public HmacSHA384() {
+            super(KeyStoreKeyConstraints.Digest.SHA384);
+        }
+    }
+
+    public static class HmacSHA512 extends KeyStoreHmacSpi {
+        public HmacSHA512() {
+            super(KeyStoreKeyConstraints.Digest.SHA512);
+        }
+    }
+
+    private final KeyStore mKeyStore = KeyStore.getInstance();
+    private final @KeyStoreKeyConstraints.DigestEnum int mDigest;
+    private final int mMacSizeBytes;
+
+    private String mKeyAliasInKeyStore;
+
+    // The fields below are reset by the engineReset operation.
+    private KeyStoreCryptoOperationChunkedStreamer mChunkedStreamer;
+    private IBinder mOperationToken;
+    private Long mOperationHandle;
+
+    protected KeyStoreHmacSpi(@KeyStoreKeyConstraints.DigestEnum int digest) {
+        mDigest = digest;
+        mMacSizeBytes = KeyStoreKeyConstraints.Digest.getOutputSizeBytes(digest);
+    }
+
+    @Override
+    protected int engineGetMacLength() {
+        return mMacSizeBytes;
+    }
+
+    @Override
+    protected void engineInit(Key key, AlgorithmParameterSpec params) throws InvalidKeyException,
+            InvalidAlgorithmParameterException {
+        if (key == null) {
+            throw new InvalidKeyException("key == null");
+        } else if (!(key instanceof KeyStoreSecretKey)) {
+            throw new InvalidKeyException(
+                    "Only Android KeyStore secret keys supported. Key: " + key);
+        }
+
+        if (params != null) {
+            throw new InvalidAlgorithmParameterException(
+                    "Unsupported algorithm parameters: " + params);
+        }
+
+        mKeyAliasInKeyStore = ((KeyStoreSecretKey) key).getAlias();
+        if (mKeyAliasInKeyStore == null) {
+            throw new InvalidKeyException("Key's KeyStore alias not known");
+        }
+        engineReset();
+        ensureKeystoreOperationInitialized();
+    }
+
+    @Override
+    protected void engineReset() {
+        IBinder operationToken = mOperationToken;
+        if (operationToken != null) {
+            mOperationToken = null;
+            mKeyStore.abort(operationToken);
+        }
+        mOperationHandle = null;
+        mChunkedStreamer = null;
+    }
+
+    private void ensureKeystoreOperationInitialized() {
+        if (mChunkedStreamer != null) {
+            return;
+        }
+        if (mKeyAliasInKeyStore == null) {
+            throw new IllegalStateException("Not initialized");
+        }
+
+        KeymasterArguments keymasterArgs = new KeymasterArguments();
+        keymasterArgs.addInt(KeymasterDefs.KM_TAG_ALGORITHM, KeyStoreKeyConstraints.Algorithm.HMAC);
+        keymasterArgs.addInt(KeymasterDefs.KM_TAG_DIGEST, mDigest);
+
+        OperationResult opResult = mKeyStore.begin(mKeyAliasInKeyStore,
+                KeymasterDefs.KM_PURPOSE_SIGN,
+                true,
+                keymasterArgs,
+                null,
+                new KeymasterArguments());
+        if (opResult == null) {
+            throw new KeyStoreConnectException();
+        } else if (opResult.resultCode != KeyStore.NO_ERROR) {
+            throw KeyStore.getCryptoOperationException(opResult.resultCode);
+        }
+        if (opResult.token == null) {
+            throw new CryptoOperationException("Keystore returned null operation token");
+        }
+        mOperationToken = opResult.token;
+        mOperationHandle = opResult.operationHandle;
+        mChunkedStreamer = new KeyStoreCryptoOperationChunkedStreamer(
+                new KeyStoreCryptoOperationChunkedStreamer.MainDataStream(
+                        mKeyStore, mOperationToken));
+    }
+
+    @Override
+    protected void engineUpdate(byte input) {
+        engineUpdate(new byte[] {input}, 0, 1);
+    }
+
+    @Override
+    protected void engineUpdate(byte[] input, int offset, int len) {
+        ensureKeystoreOperationInitialized();
+
+        byte[] output;
+        try {
+            output = mChunkedStreamer.update(input, offset, len);
+        } catch (KeyStoreException e) {
+            throw KeyStore.getCryptoOperationException(e);
+        }
+        if ((output != null) && (output.length != 0)) {
+            throw new CryptoOperationException("Update operation unexpectedly produced output");
+        }
+    }
+
+    @Override
+    protected byte[] engineDoFinal() {
+        ensureKeystoreOperationInitialized();
+
+        byte[] result;
+        try {
+            result = mChunkedStreamer.doFinal(null, 0, 0);
+        } catch (KeyStoreException e) {
+            throw KeyStore.getCryptoOperationException(e);
+        }
+
+        engineReset();
+        return result;
+    }
+
+    @Override
+    public void finalize() throws Throwable {
+        try {
+            IBinder operationToken = mOperationToken;
+            if (operationToken != null) {
+                mKeyStore.abort(operationToken);
+            }
+        } finally {
+            super.finalize();
+        }
+    }
+
+    @Override
+    public Long getOperationHandle() {
+        return mOperationHandle;
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreKeyCharacteristics.java b/keystore/java/android/security/KeyStoreKeyCharacteristics.java
new file mode 100644
index 0000000..543b5d8
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreKeyCharacteristics.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.annotation.IntDef;
+import android.security.keymaster.KeymasterDefs;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Characteristics of {@code AndroidKeyStore} keys.
+ *
+ * @hide
+ */
+public abstract class KeyStoreKeyCharacteristics {
+    private KeyStoreKeyCharacteristics() {}
+
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({Origin.GENERATED_INSIDE_TEE, Origin.GENERATED_OUTSIDE_OF_TEE, Origin.IMPORTED})
+    public @interface OriginEnum {}
+
+    /**
+     * Origin of the key.
+     */
+    public static abstract class Origin {
+        private Origin() {}
+
+        /** Key was generated inside a TEE. */
+        public static final int GENERATED_INSIDE_TEE = 1;
+
+        /** Key was generated outside of a TEE. */
+        public static final int GENERATED_OUTSIDE_OF_TEE = 2;
+
+        /** Key was imported. */
+        public static final int IMPORTED = 0;
+
+        /**
+         * @hide
+         */
+        public static @OriginEnum int fromKeymaster(int origin) {
+            switch (origin) {
+                case KeymasterDefs.KM_ORIGIN_HARDWARE:
+                    return GENERATED_INSIDE_TEE;
+                case KeymasterDefs.KM_ORIGIN_SOFTWARE:
+                    return GENERATED_OUTSIDE_OF_TEE;
+                case KeymasterDefs.KM_ORIGIN_IMPORTED:
+                    return IMPORTED;
+                default:
+                    throw new IllegalArgumentException("Unknown origin: " + origin);
+            }
+        }
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreKeyConstraints.java b/keystore/java/android/security/KeyStoreKeyConstraints.java
index 01e6dcd..9321302 100644
--- a/keystore/java/android/security/KeyStoreKeyConstraints.java
+++ b/keystore/java/android/security/KeyStoreKeyConstraints.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package android.security;
 
 import android.annotation.IntDef;
@@ -5,7 +21,6 @@
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.Locale;
 
@@ -18,7 +33,8 @@
     private KeyStoreKeyConstraints() {}
 
     @Retention(RetentionPolicy.SOURCE)
-    @IntDef(flag=true, value={Purpose.ENCRYPT, Purpose.DECRYPT, Purpose.SIGN, Purpose.VERIFY})
+    @IntDef(flag = true,
+            value = {Purpose.ENCRYPT, Purpose.DECRYPT, Purpose.SIGN, Purpose.VERIFY})
     public @interface PurposeEnum {}
 
     /**
@@ -48,11 +64,6 @@
         public static final int VERIFY = 1 << 3;
 
         /**
-         * Number of flags defined above. Needs to be kept in sync with the flags above.
-         */
-        private static final int VALUE_COUNT = 4;
-
-        /**
          * @hide
          */
         public static int toKeymaster(@PurposeEnum int purpose) {
@@ -91,22 +102,12 @@
         /**
          * @hide
          */
-        public static int[] allToKeymaster(int purposes) {
-            int[] result = new int[VALUE_COUNT];
-            int resultCount = 0;
-            int purpose = 1;
-            for (int i = 0; i < 32; i++) {
-                if ((purposes & 1) != 0) {
-                    result[resultCount] = toKeymaster(purpose);
-                    resultCount++;
-                }
-                purposes >>>= 1;
-                purpose <<= 1;
-                if (purposes == 0) {
-                    break;
-                }
+        public static int[] allToKeymaster(@PurposeEnum int purposes) {
+            int[] result = getSetFlags(purposes);
+            for (int i = 0; i < result.length; i++) {
+                result[i] = toKeymaster(result[i]);
             }
-            return Arrays.copyOf(result, resultCount);
+            return result;
         }
 
         /**
@@ -222,20 +223,11 @@
                     throw new IllegalArgumentException("Unsupported key algorithm: " + algorithm);
             }
         }
-
-        /**
-         * @hide
-         */
-        public static String toJCAKeyPairAlgorithm(@AlgorithmEnum int algorithm) {
-            switch (algorithm) {
-                default:
-                    throw new IllegalArgumentException("Unsupported key alorithm: " + algorithm);
-            }
-        }
     }
 
     @Retention(RetentionPolicy.SOURCE)
-    @IntDef({Padding.NONE, Padding.ZERO, Padding.PKCS7})
+    @IntDef(flag = true,
+            value = {Padding.NONE, Padding.PKCS7})
     public @interface PaddingEnum {}
 
     /**
@@ -247,17 +239,12 @@
         /**
          * No padding.
          */
-        public static final int NONE = 0;
-
-        /**
-         * Pad with zeros.
-         */
-        public static final int ZERO = 1;
+        public static final int NONE = 1 << 0;
 
         /**
          * PKCS#7 padding.
          */
-        public static final int PKCS7 = 2;
+        public static final int PKCS7 = 1 << 1;
 
         /**
          * @hide
@@ -266,8 +253,6 @@
             switch (padding) {
                 case NONE:
                     return KeymasterDefs.KM_PAD_NONE;
-                case ZERO:
-                    return KeymasterDefs.KM_PAD_ZERO;
                 case PKCS7:
                     return KeymasterDefs.KM_PAD_PKCS7;
                 default:
@@ -282,18 +267,75 @@
             switch (padding) {
                 case KeymasterDefs.KM_PAD_NONE:
                     return NONE;
-                case KeymasterDefs.KM_PAD_ZERO:
-                    return ZERO;
                 case KeymasterDefs.KM_PAD_PKCS7:
                     return PKCS7;
                 default:
                     throw new IllegalArgumentException("Unknown padding: " + padding);
             }
         }
+
+        /**
+         * @hide
+         */
+        public static String toString(@PaddingEnum int padding) {
+            switch (padding) {
+                case NONE:
+                    return "NONE";
+                case PKCS7:
+                    return "PKCS#7";
+                default:
+                    throw new IllegalArgumentException("Unknown padding: " + padding);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static @PaddingEnum int fromJCAPadding(String padding) {
+            String paddingLower = padding.toLowerCase(Locale.US);
+            if ("nopadding".equals(paddingLower)) {
+                return NONE;
+            } else if ("pkcs7padding".equals(paddingLower)) {
+                return PKCS7;
+            } else {
+                throw new IllegalArgumentException("Unknown padding: " + padding);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static int[] allToKeymaster(@PaddingEnum int paddings) {
+            int[] result = getSetFlags(paddings);
+            for (int i = 0; i < result.length; i++) {
+                result[i] = toKeymaster(result[i]);
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static @PaddingEnum int allFromKeymaster(Collection<Integer> paddings) {
+            @PaddingEnum int result = 0;
+            for (int keymasterPadding : paddings) {
+                result |= fromKeymaster(keymasterPadding);
+            }
+            return result;
+        }
     }
 
     @Retention(RetentionPolicy.SOURCE)
-    @IntDef({Digest.NONE, Digest.SHA256})
+    @IntDef(flag = true,
+            value = {
+                Digest.NONE,
+                Digest.MD5,
+                Digest.SHA1,
+                Digest.SHA224,
+                Digest.SHA256,
+                Digest.SHA384,
+                Digest.SHA512,
+                })
     public @interface DigestEnum {}
 
     /**
@@ -306,12 +348,37 @@
         /**
          * No digest: sign/authenticate the raw message.
          */
-        public static final int NONE = 0;
+        public static final int NONE = 1 << 0;
 
         /**
-         * SHA-256 digest.
+         * MD5 digest.
          */
-        public static final int SHA256 = 1;
+        public static final int MD5 = 1 << 1;
+
+        /**
+         * SHA-1 digest.
+         */
+        public static final int SHA1 = 1 << 2;
+
+        /**
+         * SHA-2 224 (aka SHA-224) digest.
+         */
+        public static final int SHA224 = 1 << 3;
+
+        /**
+         * SHA-2 256 (aka SHA-256) digest.
+         */
+        public static final int SHA256 = 1 << 4;
+
+        /**
+         * SHA-2 384 (aka SHA-384) digest.
+         */
+        public static final int SHA384 = 1 << 5;
+
+        /**
+         * SHA-2 512 (aka SHA-512) digest.
+         */
+        public static final int SHA512 = 1 << 6;
 
         /**
          * @hide
@@ -320,8 +387,18 @@
             switch (digest) {
                 case NONE:
                     return "NONE";
+                case MD5:
+                    return "MD5";
+                case SHA1:
+                    return "SHA-1";
+                case SHA224:
+                    return "SHA-224";
                 case SHA256:
-                    return "SHA256";
+                    return "SHA-256";
+                case SHA384:
+                    return "SHA-384";
+                case SHA512:
+                    return "SHA-512";
                 default:
                     throw new IllegalArgumentException("Unknown digest: " + digest);
             }
@@ -330,12 +407,40 @@
         /**
          * @hide
          */
+        public static String allToString(@DigestEnum int digests) {
+            StringBuilder result = new StringBuilder("[");
+            boolean firstValue = true;
+            for (@DigestEnum int digest : getSetFlags(digests)) {
+                if (firstValue) {
+                    firstValue = false;
+                } else {
+                    result.append(", ");
+                }
+                result.append(toString(digest));
+            }
+            result.append(']');
+            return result.toString();
+        }
+
+        /**
+         * @hide
+         */
         public static int toKeymaster(@DigestEnum int digest) {
             switch (digest) {
                 case NONE:
                     return KeymasterDefs.KM_DIGEST_NONE;
+                case MD5:
+                    return KeymasterDefs.KM_DIGEST_MD5;
+                case SHA1:
+                    return KeymasterDefs.KM_DIGEST_SHA1;
+                case SHA224:
+                    return KeymasterDefs.KM_DIGEST_SHA_2_224;
                 case SHA256:
                     return KeymasterDefs.KM_DIGEST_SHA_2_256;
+                case SHA384:
+                    return KeymasterDefs.KM_DIGEST_SHA_2_384;
+                case SHA512:
+                    return KeymasterDefs.KM_DIGEST_SHA_2_512;
                 default:
                     throw new IllegalArgumentException("Unknown digest: " + digest);
             }
@@ -348,8 +453,18 @@
             switch (digest) {
                 case KeymasterDefs.KM_DIGEST_NONE:
                     return NONE;
+                case KeymasterDefs.KM_DIGEST_MD5:
+                    return MD5;
+                case KeymasterDefs.KM_DIGEST_SHA1:
+                    return SHA1;
+                case KeymasterDefs.KM_DIGEST_SHA_2_224:
+                    return SHA224;
                 case KeymasterDefs.KM_DIGEST_SHA_2_256:
                     return SHA256;
+                case KeymasterDefs.KM_DIGEST_SHA_2_384:
+                    return SHA384;
+                case KeymasterDefs.KM_DIGEST_SHA_2_512:
+                    return SHA512;
                 default:
                     throw new IllegalArgumentException("Unknown digest: " + digest);
             }
@@ -358,14 +473,46 @@
         /**
          * @hide
          */
+        public static int[] allToKeymaster(@DigestEnum int digests) {
+            int[] result = getSetFlags(digests);
+            for (int i = 0; i < result.length; i++) {
+                result[i] = toKeymaster(result[i]);
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static @DigestEnum int allFromKeymaster(Collection<Integer> digests) {
+            @DigestEnum int result = 0;
+            for (int keymasterDigest : digests) {
+                result |= fromKeymaster(keymasterDigest);
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
         public static @DigestEnum Integer fromJCASecretKeyAlgorithm(String algorithm) {
             String algorithmLower = algorithm.toLowerCase(Locale.US);
             if (algorithmLower.startsWith("hmac")) {
-                if ("hmacsha256".equals(algorithmLower)) {
+                String digestLower = algorithmLower.substring("hmac".length());
+                if ("md5".equals(digestLower)) {
+                    return MD5;
+                } else if ("sha1".equals(digestLower)) {
+                    return SHA1;
+                } else if ("sha224".equals(digestLower)) {
+                    return SHA224;
+                } else if ("sha256".equals(digestLower)) {
                     return SHA256;
+                } else if ("sha384".equals(digestLower)) {
+                    return SHA384;
+                } else if ("sha512".equals(digestLower)) {
+                    return SHA512;
                 } else {
-                    throw new IllegalArgumentException("Unsupported digest: "
-                            + algorithmLower.substring("hmac".length()));
+                    throw new IllegalArgumentException("Unsupported digest: " + digestLower);
                 }
             } else {
                 return null;
@@ -379,8 +526,42 @@
             switch (digest) {
                 case NONE:
                     return "NONE";
+                case MD5:
+                    return "MD5";
+                case SHA1:
+                    return "SHA1";
+                case SHA224:
+                    return "SHA224";
                 case SHA256:
                     return "SHA256";
+                case SHA384:
+                    return "SHA384";
+                case SHA512:
+                    return "SHA512";
+                default:
+                    throw new IllegalArgumentException("Unknown digest: " + digest);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static Integer getOutputSizeBytes(@DigestEnum int digest) {
+            switch (digest) {
+                case NONE:
+                    return null;
+                case MD5:
+                    return 128 / 8;
+                case SHA1:
+                    return 160 / 8;
+                case SHA224:
+                    return 224 / 8;
+                case SHA256:
+                    return 256 / 8;
+                case SHA384:
+                    return 384 / 8;
+                case SHA512:
+                    return 512 / 8;
                 default:
                     throw new IllegalArgumentException("Unknown digest: " + digest);
             }
@@ -388,7 +569,8 @@
     }
 
     @Retention(RetentionPolicy.SOURCE)
-    @IntDef({BlockMode.ECB})
+    @IntDef(flag = true,
+            value = {BlockMode.ECB, BlockMode.CBC, BlockMode.CTR, BlockMode.GCM})
     public @interface BlockModeEnum {}
 
     /**
@@ -397,10 +579,17 @@
     public static abstract class BlockMode {
         private BlockMode() {}
 
-        /**
-         * Electronic Codebook (ECB) block mode.
-         */
-        public static final int ECB = 0;
+        /** Electronic Codebook (ECB) block mode. */
+        public static final int ECB = 1 << 0;
+
+        /** Cipher Block Chaining (CBC) block mode. */
+        public static final int CBC = 1 << 1;
+
+        /** Counter (CTR) block mode. */
+        public static final int CTR = 1 << 2;
+
+        /** Galois/Counter Mode (GCM) block mode. */
+        public static final int GCM = 1 << 3;
 
         /**
          * @hide
@@ -409,6 +598,12 @@
             switch (mode) {
                 case ECB:
                     return KeymasterDefs.KM_MODE_ECB;
+                case CBC:
+                    return KeymasterDefs.KM_MODE_CBC;
+                case CTR:
+                    return KeymasterDefs.KM_MODE_CTR;
+                case GCM:
+                    return KeymasterDefs.KM_MODE_GCM;
                 default:
                     throw new IllegalArgumentException("Unknown block mode: " + mode);
             }
@@ -421,9 +616,193 @@
             switch (mode) {
                 case KeymasterDefs.KM_MODE_ECB:
                     return ECB;
+                case KeymasterDefs.KM_MODE_CBC:
+                    return CBC;
+                case KeymasterDefs.KM_MODE_CTR:
+                    return CTR;
+                case KeymasterDefs.KM_MODE_GCM:
+                    return GCM;
                 default:
                     throw new IllegalArgumentException("Unknown block mode: " + mode);
             }
         }
+
+        /**
+         * @hide
+         */
+        public static int[] allToKeymaster(@BlockModeEnum int modes) {
+            int[] result = getSetFlags(modes);
+            for (int i = 0; i < result.length; i++) {
+                result[i] = toKeymaster(result[i]);
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static @BlockModeEnum int allFromKeymaster(Collection<Integer> modes) {
+            @BlockModeEnum int result = 0;
+            for (int keymasterMode : modes) {
+                result |= fromKeymaster(keymasterMode);
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static String toString(@BlockModeEnum int mode) {
+            switch (mode) {
+                case ECB:
+                    return "ECB";
+                case CBC:
+                    return "CBC";
+                case CTR:
+                    return "CTR";
+                case GCM:
+                    return "GCM";
+                default:
+                    throw new IllegalArgumentException("Unknown block mode: " + mode);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static @BlockModeEnum int fromJCAMode(String mode) {
+            String modeLower = mode.toLowerCase(Locale.US);
+            if ("ecb".equals(modeLower)) {
+                return ECB;
+            } else if ("cbc".equals(modeLower)) {
+                return CBC;
+            } else if ("ctr".equals(modeLower)) {
+                return CTR;
+            } else if ("gcm".equals(modeLower)) {
+                return GCM;
+            } else {
+                throw new IllegalArgumentException("Unknown block mode: " + mode);
+            }
+        }
+    }
+
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(flag = true,
+            value = {UserAuthenticator.LOCK_SCREEN})
+    public @interface UserAuthenticatorEnum {}
+
+    /**
+     * User authenticators which can be used to restrict/protect access to keys.
+     */
+    public static abstract class UserAuthenticator {
+        private UserAuthenticator() {}
+
+        /** Lock screen. */
+        public static final int LOCK_SCREEN = 1 << 0;
+
+        /**
+         * @hide
+         */
+        public static int toKeymaster(@UserAuthenticatorEnum int userAuthenticator) {
+            switch (userAuthenticator) {
+                case LOCK_SCREEN:
+                    return KeymasterDefs.HW_AUTH_PASSWORD;
+                default:
+                    throw new IllegalArgumentException(
+                            "Unknown user authenticator: " + userAuthenticator);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static @UserAuthenticatorEnum int fromKeymaster(int userAuthenticator) {
+            switch (userAuthenticator) {
+                case KeymasterDefs.HW_AUTH_PASSWORD:
+                    return LOCK_SCREEN;
+                default:
+                    throw new IllegalArgumentException(
+                            "Unknown user authenticator: " + userAuthenticator);
+            }
+        }
+
+        /**
+         * @hide
+         */
+        public static int allToKeymaster(@UserAuthenticatorEnum int userAuthenticators) {
+            int result = 0;
+            int userAuthenticator = 1;
+            while (userAuthenticators != 0) {
+                if ((userAuthenticators & 1) != 0) {
+                    result |= toKeymaster(userAuthenticator);
+                }
+                userAuthenticators >>>= 1;
+                userAuthenticator <<= 1;
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static @UserAuthenticatorEnum int allFromKeymaster(int userAuthenticators) {
+            @UserAuthenticatorEnum int result = 0;
+            int userAuthenticator = 1;
+            while (userAuthenticators != 0) {
+                if ((userAuthenticators & 1) != 0) {
+                    result |= fromKeymaster(userAuthenticator);
+                }
+                userAuthenticators >>>= 1;
+                userAuthenticator <<= 1;
+            }
+            return result;
+        }
+
+        /**
+         * @hide
+         */
+        public static String toString(@UserAuthenticatorEnum int userAuthenticator) {
+            switch (userAuthenticator) {
+                case LOCK_SCREEN:
+                    return "LOCK_SCREEN";
+                default:
+                    throw new IllegalArgumentException(
+                            "Unknown user authenticator: " + userAuthenticator);
+            }
+        }
+    }
+
+    private static final int[] EMPTY_INT_ARRAY = new int[0];
+
+    private static int[] getSetFlags(int flags) {
+        if (flags == 0) {
+            return EMPTY_INT_ARRAY;
+        }
+        int result[] = new int[getSetBitCount(flags)];
+        int resultOffset = 0;
+        int flag = 1;
+        while (flags != 0) {
+            if ((flags & 1) != 0) {
+                result[resultOffset] = flag;
+                resultOffset++;
+            }
+            flags >>>= 1;
+            flag <<= 1;
+        }
+        return result;
+    }
+
+    private static int getSetBitCount(int value) {
+        if (value == 0) {
+            return 0;
+        }
+        int result = 0;
+        while (value != 0) {
+            if ((value & 1) != 0) {
+                result++;
+            }
+            value >>>= 1;
+        }
+        return result;
     }
 }
diff --git a/keystore/java/android/security/KeyStoreKeyGeneratorSpi.java b/keystore/java/android/security/KeyStoreKeyGeneratorSpi.java
new file mode 100644
index 0000000..5be8c39
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreKeyGeneratorSpi.java
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.security.keymaster.KeyCharacteristics;
+import android.security.keymaster.KeymasterArguments;
+import android.security.keymaster.KeymasterDefs;
+
+import java.security.InvalidAlgorithmParameterException;
+import java.security.SecureRandom;
+import java.security.spec.AlgorithmParameterSpec;
+import java.util.Date;
+
+import javax.crypto.KeyGeneratorSpi;
+import javax.crypto.SecretKey;
+
+/**
+ * {@link KeyGeneratorSpi} backed by Android KeyStore.
+ *
+ * @hide
+ */
+public abstract class KeyStoreKeyGeneratorSpi extends KeyGeneratorSpi {
+
+    public static class AES extends KeyStoreKeyGeneratorSpi {
+        public AES() {
+            super(KeyStoreKeyConstraints.Algorithm.AES, 128);
+        }
+    }
+
+    protected static abstract class HmacBase extends KeyStoreKeyGeneratorSpi {
+        protected HmacBase(@KeyStoreKeyConstraints.DigestEnum int digest) {
+            super(KeyStoreKeyConstraints.Algorithm.HMAC,
+                    digest,
+                    KeyStoreKeyConstraints.Digest.getOutputSizeBytes(digest) * 8);
+        }
+    }
+
+    public static class HmacSHA1 extends HmacBase {
+        public HmacSHA1() {
+            super(KeyStoreKeyConstraints.Digest.SHA1);
+        }
+    }
+
+    public static class HmacSHA224 extends HmacBase {
+        public HmacSHA224() {
+            super(KeyStoreKeyConstraints.Digest.SHA224);
+        }
+    }
+
+    public static class HmacSHA256 extends HmacBase {
+        public HmacSHA256() {
+            super(KeyStoreKeyConstraints.Digest.SHA256);
+        }
+    }
+
+    public static class HmacSHA384 extends HmacBase {
+        public HmacSHA384() {
+            super(KeyStoreKeyConstraints.Digest.SHA384);
+        }
+    }
+
+    public static class HmacSHA512 extends HmacBase {
+        public HmacSHA512() {
+            super(KeyStoreKeyConstraints.Digest.SHA512);
+        }
+    }
+
+    private final KeyStore mKeyStore = KeyStore.getInstance();
+    private final @KeyStoreKeyConstraints.AlgorithmEnum int mAlgorithm;
+    private final @KeyStoreKeyConstraints.DigestEnum Integer mDigest;
+    private final int mDefaultKeySizeBits;
+
+    private KeyGeneratorSpec mSpec;
+    private SecureRandom mRng;
+
+    protected KeyStoreKeyGeneratorSpi(
+            @KeyStoreKeyConstraints.AlgorithmEnum int algorithm,
+            int defaultKeySizeBits) {
+        this(algorithm, null, defaultKeySizeBits);
+    }
+
+    protected KeyStoreKeyGeneratorSpi(
+            @KeyStoreKeyConstraints.AlgorithmEnum int algorithm,
+            @KeyStoreKeyConstraints.DigestEnum Integer digest,
+            int defaultKeySizeBits) {
+        mAlgorithm = algorithm;
+        mDigest = digest;
+        mDefaultKeySizeBits = defaultKeySizeBits;
+    }
+
+    @Override
+    protected SecretKey engineGenerateKey() {
+        KeyGeneratorSpec spec = mSpec;
+        if (spec == null) {
+            throw new IllegalStateException("Not initialized");
+        }
+
+        if ((spec.isEncryptionRequired())
+                && (mKeyStore.state() != KeyStore.State.UNLOCKED)) {
+            throw new IllegalStateException(
+                    "Android KeyStore must be in initialized and unlocked state if encryption is"
+                    + " required");
+        }
+
+        KeymasterArguments args = new KeymasterArguments();
+        args.addInt(KeymasterDefs.KM_TAG_ALGORITHM,
+                KeyStoreKeyConstraints.Algorithm.toKeymaster(mAlgorithm));
+        if (mDigest != null) {
+            args.addInt(KeymasterDefs.KM_TAG_DIGEST,
+                    KeyStoreKeyConstraints.Digest.toKeymaster(mDigest));
+            Integer digestOutputSizeBytes =
+                    KeyStoreKeyConstraints.Digest.getOutputSizeBytes(mDigest);
+            if (digestOutputSizeBytes != null) {
+                // TODO: Remove MAC length constraint once Keymaster API no longer requires it.
+                // TODO: Switch to bits instead of bytes, once this is fixed in Keymaster
+                args.addInt(KeymasterDefs.KM_TAG_MAC_LENGTH, digestOutputSizeBytes);
+            }
+        }
+        if (mAlgorithm == KeyStoreKeyConstraints.Algorithm.HMAC) {
+            if (mDigest == null) {
+                throw new IllegalStateException("Digest algorithm must be specified for key"
+                        + " algorithm " + KeyStoreKeyConstraints.Algorithm.toString(mAlgorithm));
+            }
+        }
+        int keySizeBits = (spec.getKeySize() != null) ? spec.getKeySize() : mDefaultKeySizeBits;
+        args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, keySizeBits);
+        int purposes = spec.getPurposes();
+        for (int keymasterPurpose :
+            KeyStoreKeyConstraints.Purpose.allToKeymaster(purposes)) {
+            args.addInt(KeymasterDefs.KM_TAG_PURPOSE, keymasterPurpose);
+        }
+        for (int keymasterBlockMode :
+            KeyStoreKeyConstraints.BlockMode.allToKeymaster(spec.getBlockModes())) {
+            args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, keymasterBlockMode);
+        }
+        for (int keymasterPadding :
+            KeyStoreKeyConstraints.Padding.allToKeymaster(spec.getPaddings())) {
+            args.addInt(KeymasterDefs.KM_TAG_PADDING, keymasterPadding);
+        }
+        if (spec.getUserAuthenticators() == 0) {
+            args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
+        } else {
+            args.addInt(KeymasterDefs.KM_TAG_USER_AUTH_TYPE,
+                    KeyStoreKeyConstraints.UserAuthenticator.allToKeymaster(
+                            spec.getUserAuthenticators()));
+        }
+        if (spec.getUserAuthenticationValidityDurationSeconds() != -1) {
+            args.addInt(KeymasterDefs.KM_TAG_AUTH_TIMEOUT,
+                    spec.getUserAuthenticationValidityDurationSeconds());
+        }
+        args.addDate(KeymasterDefs.KM_TAG_ACTIVE_DATETIME,
+                (spec.getKeyValidityStart() != null)
+                ? spec.getKeyValidityStart() : new Date(0));
+        args.addDate(KeymasterDefs.KM_TAG_ORIGINATION_EXPIRE_DATETIME,
+                (spec.getKeyValidityForOriginationEnd() != null)
+                ? spec.getKeyValidityForOriginationEnd() : new Date(Long.MAX_VALUE));
+        args.addDate(KeymasterDefs.KM_TAG_USAGE_EXPIRE_DATETIME,
+                (spec.getKeyValidityForConsumptionEnd() != null)
+                ? spec.getKeyValidityForConsumptionEnd() : new Date(Long.MAX_VALUE));
+
+        if (((purposes & KeyStoreKeyConstraints.Purpose.ENCRYPT) != 0)
+            || ((purposes & KeyStoreKeyConstraints.Purpose.DECRYPT) != 0)) {
+            // Permit caller-specified IV. This is needed due to the Cipher abstraction.
+            args.addBoolean(KeymasterDefs.KM_TAG_CALLER_NONCE);
+        }
+
+        byte[] additionalEntropy = null;
+        SecureRandom rng = mRng;
+        if (rng != null) {
+            additionalEntropy = new byte[(keySizeBits + 7) / 8];
+            rng.nextBytes(additionalEntropy);
+        }
+
+        int flags = spec.getFlags();
+        String keyAliasInKeystore = Credentials.USER_SECRET_KEY + spec.getKeystoreAlias();
+        int errorCode = mKeyStore.generateKey(
+                keyAliasInKeystore, args, additionalEntropy, flags, new KeyCharacteristics());
+        if (errorCode != KeyStore.NO_ERROR) {
+            throw KeyStore.getCryptoOperationException(errorCode);
+        }
+        String keyAlgorithmJCA =
+                KeyStoreKeyConstraints.Algorithm.toJCASecretKeyAlgorithm(mAlgorithm, mDigest);
+        return new KeyStoreSecretKey(keyAliasInKeystore, keyAlgorithmJCA);
+    }
+
+    @Override
+    protected void engineInit(SecureRandom random) {
+        throw new UnsupportedOperationException("Cannot initialize without an "
+                + KeyGeneratorSpec.class.getName() + " parameter");
+    }
+
+    @Override
+    protected void engineInit(AlgorithmParameterSpec params, SecureRandom random)
+            throws InvalidAlgorithmParameterException {
+        if ((params == null) || (!(params instanceof KeyGeneratorSpec))) {
+            throw new InvalidAlgorithmParameterException("Cannot initialize without an "
+                    + KeyGeneratorSpec.class.getName() + " parameter");
+        }
+        KeyGeneratorSpec spec = (KeyGeneratorSpec) params;
+        if (spec.getKeystoreAlias() == null) {
+            throw new InvalidAlgorithmParameterException("KeyStore entry alias not provided");
+        }
+
+        mSpec = spec;
+        mRng = random;
+    }
+
+    @Override
+    protected void engineInit(int keySize, SecureRandom random) {
+        throw new UnsupportedOperationException("Cannot initialize without a "
+                + KeyGeneratorSpec.class.getName() + " parameter");
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreKeySpec.java b/keystore/java/android/security/KeyStoreKeySpec.java
new file mode 100644
index 0000000..df4c958
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreKeySpec.java
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import java.security.spec.KeySpec;
+import java.util.Date;
+
+/**
+ * Information about a key from the <a href="{@docRoot}training/articles/keystore.html">Android
+ * KeyStore</a>.
+ *
+ * @hide
+ */
+public class KeyStoreKeySpec implements KeySpec {
+    private final String mKeystoreAlias;
+    private final int mKeySize;
+    private final @KeyStoreKeyCharacteristics.OriginEnum int mOrigin;
+    private final Date mKeyValidityStart;
+    private final Date mKeyValidityForOriginationEnd;
+    private final Date mKeyValidityForConsumptionEnd;
+    private final @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+    private final @KeyStoreKeyConstraints.AlgorithmEnum int mAlgorithm;
+    private final @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+    private final @KeyStoreKeyConstraints.DigestEnum int mDigests;
+    private final @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+    private final @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+    private final @KeyStoreKeyConstraints.UserAuthenticatorEnum int mTeeEnforcedUserAuthenticators;
+    private final int mUserAuthenticationValidityDurationSeconds;
+
+
+    /**
+     * @hide
+     */
+    KeyStoreKeySpec(String keystoreKeyAlias,
+            @KeyStoreKeyCharacteristics.OriginEnum int origin,
+            int keySize,
+            Date keyValidityStart,
+            Date keyValidityForOriginationEnd,
+            Date keyValidityForConsumptionEnd,
+            @KeyStoreKeyConstraints.PurposeEnum int purposes,
+            @KeyStoreKeyConstraints.AlgorithmEnum int algorithm,
+            @KeyStoreKeyConstraints.PaddingEnum int paddings,
+            @KeyStoreKeyConstraints.DigestEnum int digests,
+            @KeyStoreKeyConstraints.BlockModeEnum int blockModes,
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators,
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum int teeEnforcedUserAuthenticators,
+            int userAuthenticationValidityDurationSeconds) {
+        mKeystoreAlias = keystoreKeyAlias;
+        mOrigin = origin;
+        mKeySize = keySize;
+        mKeyValidityStart = keyValidityStart;
+        mKeyValidityForOriginationEnd = keyValidityForOriginationEnd;
+        mKeyValidityForConsumptionEnd = keyValidityForConsumptionEnd;
+        mPurposes = purposes;
+        mAlgorithm = algorithm;
+        mPaddings = paddings;
+        mDigests = digests;
+        mBlockModes = blockModes;
+        mUserAuthenticators = userAuthenticators;
+        mTeeEnforcedUserAuthenticators = teeEnforcedUserAuthenticators;
+        mUserAuthenticationValidityDurationSeconds = userAuthenticationValidityDurationSeconds;
+    }
+
+    /**
+     * Gets the entry alias under which the key is stored in the {@code AndroidKeyStore}.
+     */
+    public String getKeystoreAlias() {
+        return mKeystoreAlias;
+    }
+
+    /**
+     * Gets the origin of the key.
+     */
+    public @KeyStoreKeyCharacteristics.OriginEnum int getOrigin() {
+        return mOrigin;
+    }
+
+    /**
+     * Gets the size of the key in bits.
+     */
+    public int getKeySize() {
+        return mKeySize;
+    }
+
+    /**
+     * Gets the time instant before which the key is not yet valid.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityStart() {
+        return mKeyValidityStart;
+    }
+
+    /**
+     * Gets the time instant after which the key is no long valid for decryption and verification.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityForConsumptionEnd() {
+        return mKeyValidityForConsumptionEnd;
+    }
+
+    /**
+     * Gets the time instant after which the key is no long valid for encryption and signing.
+     *
+     * @return instant or {@code null} if not restricted.
+     */
+    public Date getKeyValidityForOriginationEnd() {
+        return mKeyValidityForOriginationEnd;
+    }
+
+    /**
+     * Gets the set of purposes for which the key can be used.
+     */
+    public @KeyStoreKeyConstraints.PurposeEnum int getPurposes() {
+        return mPurposes;
+    }
+
+    /**
+     * Gets the algorithm of the key.
+     */
+    public @KeyStoreKeyConstraints.AlgorithmEnum int getAlgorithm() {
+        return mAlgorithm;
+    }
+
+    /**
+     * Gets the set of block modes with which the key can be used.
+     */
+    public @KeyStoreKeyConstraints.BlockModeEnum int getBlockModes() {
+        return mBlockModes;
+    }
+
+    /**
+     * Gets the set of padding modes with which the key can be used.
+     */
+    public @KeyStoreKeyConstraints.PaddingEnum int getPaddings() {
+        return mPaddings;
+    }
+
+    /**
+     * Gets the set of digest algorithms with which the key can be used.
+     */
+    public @KeyStoreKeyConstraints.DigestEnum int getDigests() {
+        return mDigests;
+    }
+
+    /**
+     * Gets the set of user authenticators which protect access to the key. The key can only be used
+     * iff the user has authenticated to at least one of these user authenticators.
+     *
+     * @return user authenticators or {@code 0} if the key can be used without user authentication.
+     */
+    public @KeyStoreKeyConstraints.UserAuthenticatorEnum int getUserAuthenticators() {
+        return mUserAuthenticators;
+    }
+
+    /**
+     * Gets the set of user authenticators for which the TEE enforces access restrictions for this
+     * key. This is a subset of the user authentications returned by
+     * {@link #getUserAuthenticators()}.
+     */
+    public @KeyStoreKeyConstraints.UserAuthenticatorEnum int getTeeEnforcedUserAuthenticators() {
+        return mTeeEnforcedUserAuthenticators;
+    }
+
+    /**
+     * Gets the duration of time (seconds) for which the key can be used after the user
+     * successfully authenticates to one of the associated user authenticators.
+     *
+     * @return duration in seconds or {@code -1} if not restricted. {@code 0} means authentication
+     *         is required for every use of the key.
+     */
+    public int getUserAuthenticationValidityDurationSeconds() {
+        return mUserAuthenticationValidityDurationSeconds;
+    }
+}
diff --git a/keystore/java/android/security/KeyStoreParameter.java b/keystore/java/android/security/KeyStoreParameter.java
index 2428c2a..4909467 100644
--- a/keystore/java/android/security/KeyStoreParameter.java
+++ b/keystore/java/android/security/KeyStoreParameter.java
@@ -18,12 +18,10 @@
 
 import android.content.Context;
 
+import java.security.Key;
 import java.security.KeyPairGenerator;
 import java.security.KeyStore.ProtectionParameter;
-import java.util.Collections;
 import java.util.Date;
-import java.util.HashSet;
-import java.util.Set;
 
 /**
  * This provides the optional parameters that can be specified for
@@ -50,29 +48,25 @@
     private final Date mKeyValidityStart;
     private final Date mKeyValidityForOriginationEnd;
     private final Date mKeyValidityForConsumptionEnd;
-    private final @KeyStoreKeyConstraints.PurposeEnum Integer mPurposes;
-    private final @KeyStoreKeyConstraints.AlgorithmEnum Integer mAlgorithm;
-    private final @KeyStoreKeyConstraints.PaddingEnum Integer mPadding;
-    private final @KeyStoreKeyConstraints.DigestEnum Integer mDigest;
-    private final @KeyStoreKeyConstraints.BlockModeEnum Integer mBlockMode;
-    private final Integer mMinSecondsBetweenOperations;
-    private final Integer mMaxUsesPerBoot;
-    private final Set<Integer> mUserAuthenticators;
-    private final Integer mUserAuthenticationValidityDurationSeconds;
+    private final @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+    private final @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+    private final @KeyStoreKeyConstraints.DigestEnum Integer mDigests;
+    private final @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+    private final @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+    private final int mUserAuthenticationValidityDurationSeconds;
 
-    private KeyStoreParameter(int flags, Date keyValidityStart,
-            Date keyValidityForOriginationEnd, Date keyValidityForConsumptionEnd,
-            @KeyStoreKeyConstraints.PurposeEnum Integer purposes,
-            @KeyStoreKeyConstraints.AlgorithmEnum Integer algorithm,
-            @KeyStoreKeyConstraints.PaddingEnum Integer padding,
-            @KeyStoreKeyConstraints.DigestEnum Integer digest,
-            @KeyStoreKeyConstraints.BlockModeEnum Integer blockMode,
-            Integer minSecondsBetweenOperations,
-            Integer maxUsesPerBoot,
-            Set<Integer> userAuthenticators,
-            Integer userAuthenticationValidityDurationSeconds) {
-        if ((userAuthenticationValidityDurationSeconds != null)
-                && (userAuthenticationValidityDurationSeconds < 0)) {
+    private KeyStoreParameter(int flags,
+            Date keyValidityStart,
+            Date keyValidityForOriginationEnd,
+            Date keyValidityForConsumptionEnd,
+            @KeyStoreKeyConstraints.PurposeEnum int purposes,
+            @KeyStoreKeyConstraints.PaddingEnum int paddings,
+            @KeyStoreKeyConstraints.DigestEnum Integer digests,
+            @KeyStoreKeyConstraints.BlockModeEnum int blockModes,
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators,
+            int userAuthenticationValidityDurationSeconds) {
+        if ((userAuthenticationValidityDurationSeconds < 0)
+                && (userAuthenticationValidityDurationSeconds != -1)) {
             throw new IllegalArgumentException(
                     "userAuthenticationValidityDurationSeconds must not be negative");
         }
@@ -82,15 +76,10 @@
         mKeyValidityForOriginationEnd = keyValidityForOriginationEnd;
         mKeyValidityForConsumptionEnd = keyValidityForConsumptionEnd;
         mPurposes = purposes;
-        mAlgorithm = algorithm;
-        mPadding = padding;
-        mDigest = digest;
-        mBlockMode = blockMode;
-        mMinSecondsBetweenOperations = minSecondsBetweenOperations;
-        mMaxUsesPerBoot = maxUsesPerBoot;
-        mUserAuthenticators = (userAuthenticators != null)
-                ? new HashSet<Integer>(userAuthenticators)
-                : Collections.<Integer>emptySet();
+        mPaddings = paddings;
+        mDigests = digests;
+        mBlockModes = blockModes;
+        mUserAuthenticators = userAuthenticators;
         mUserAuthenticationValidityDurationSeconds = userAuthenticationValidityDurationSeconds;
     }
 
@@ -142,105 +131,81 @@
     }
 
     /**
-     * Gets the set of purposes for which the key can be used to the provided set of purposes.
-     *
-     * @return set of purposes or {@code null} if the key can be used for any purpose.
+     * Gets the set of purposes for which the key can be used.
      *
      * @hide
      */
-    public @KeyStoreKeyConstraints.PurposeEnum Integer getPurposes() {
+    public @KeyStoreKeyConstraints.PurposeEnum int getPurposes() {
         return mPurposes;
     }
 
     /**
-     * Gets the algorithm to which the key is restricted.
+     * Gets the set of padding schemes to which the key is restricted.
      *
-     * @return algorithm or {@code null} if it's not restricted.
      * @hide
      */
-    public @KeyStoreKeyConstraints.AlgorithmEnum Integer getAlgorithm() {
-        return mAlgorithm;
+    public @KeyStoreKeyConstraints.PaddingEnum int getPaddings() {
+        return mPaddings;
     }
 
     /**
-     * Gets the padding scheme to which the key is restricted.
+     * Gets the set of digests to which the key is restricted.
      *
-     * @return padding scheme or {@code null} if the padding scheme is not restricted.
+     * @throws IllegalStateException if this restriction has not been specified.
+     *
+     * @see #isDigestsSpecified()
      *
      * @hide
      */
-    public @KeyStoreKeyConstraints.PaddingEnum Integer getPadding() {
-        return mPadding;
+    public @KeyStoreKeyConstraints.DigestEnum int getDigests() {
+        if (mDigests == null) {
+            throw new IllegalStateException("Digests not specified");
+        }
+        return mDigests;
     }
 
     /**
-     * Gets the digest to which the key is restricted when generating Message Authentication Codes
-     * (MACs).
+     * Returns {@code true} if digest restrictions have been specified.
      *
-     * @return digest or {@code null} if the digest is not restricted.
+     * @see #getDigests()
      *
      * @hide
      */
-    public @KeyStoreKeyConstraints.DigestEnum Integer getDigest() {
-        return mDigest;
+    public boolean isDigestsSpecified() {
+        return mDigests != null;
     }
 
     /**
-     * Gets the block mode to which the key is restricted when used for encryption or decryption.
-     *
-     * @return block more or {@code null} if block mode is not restricted.
+     * Gets the set of block modes to which the key is restricted.
      *
      * @hide
      */
-    public @KeyStoreKeyConstraints.BlockModeEnum Integer getBlockMode() {
-        return mBlockMode;
+    public @KeyStoreKeyConstraints.BlockModeEnum int getBlockModes() {
+        return mBlockModes;
     }
 
     /**
-     * Gets the minimum number of seconds that must expire since the most recent use of the key
-     * before it can be used again.
+     * Gets the set of user authenticators which protect access to this key. The key can only be
+     * used iff the user has authenticated to at least one of these user authenticators.
      *
-     * @return number of seconds or {@code null} if there is no restriction on how frequently a key
-     *         can be used.
+     * @return user authenticators or {@code 0} if the key can be used without user authentication.
      *
      * @hide
      */
-    public Integer getMinSecondsBetweenOperations() {
-        return mMinSecondsBetweenOperations;
-    }
-
-    /**
-     * Gets the number of times the key can be used without rebooting the device.
-     *
-     * @return maximum number of times or {@code null} if there is no restriction.
-     * @hide
-     */
-    public Integer getMaxUsesPerBoot() {
-        return mMaxUsesPerBoot;
-    }
-
-    /**
-     * Gets the user authenticators which protect access to this key. The key can only be used iff
-     * the user has authenticated to at least one of these user authenticators.
-     *
-     * @return user authenticators or empty set if the key can be used without user authentication.
-     *
-     * @hide
-     */
-    public Set<Integer> getUserAuthenticators() {
-        return new HashSet<Integer>(mUserAuthenticators);
+    public @KeyStoreKeyConstraints.UserAuthenticatorEnum int getUserAuthenticators() {
+        return mUserAuthenticators;
     }
 
     /**
      * Gets the duration of time (seconds) for which this key can be used after the user
      * successfully authenticates to one of the associated user authenticators.
      *
-     * @return duration in seconds or {@code null} if not restricted. {@code 0} means authentication
+     * @return duration in seconds or {@code -1} if not restricted. {@code 0} means authentication
      *         is required for every use of the key.
      *
      * @hide
      */
-    public Integer getUserAuthenticationValidityDurationSeconds() {
+    public int getUserAuthenticationValidityDurationSeconds() {
         return mUserAuthenticationValidityDurationSeconds;
     }
 
@@ -266,15 +231,12 @@
         private Date mKeyValidityStart;
         private Date mKeyValidityForOriginationEnd;
         private Date mKeyValidityForConsumptionEnd;
-        private @KeyStoreKeyConstraints.PurposeEnum Integer mPurposes;
-        private @KeyStoreKeyConstraints.AlgorithmEnum Integer mAlgorithm;
-        private @KeyStoreKeyConstraints.PaddingEnum Integer mPadding;
-        private @KeyStoreKeyConstraints.DigestEnum Integer mDigest;
-        private @KeyStoreKeyConstraints.BlockModeEnum Integer mBlockMode;
-        private Integer mMinSecondsBetweenOperations;
-        private Integer mMaxUsesPerBoot;
-        private Set<Integer> mUserAuthenticators;
-        private Integer mUserAuthenticationValidityDurationSeconds;
+        private @KeyStoreKeyConstraints.PurposeEnum int mPurposes;
+        private @KeyStoreKeyConstraints.PaddingEnum int mPaddings;
+        private @KeyStoreKeyConstraints.DigestEnum Integer mDigests;
+        private @KeyStoreKeyConstraints.BlockModeEnum int mBlockModes;
+        private @KeyStoreKeyConstraints.UserAuthenticatorEnum int mUserAuthenticators;
+        private int mUserAuthenticationValidityDurationSeconds = -1;
 
         /**
          * Creates a new instance of the {@code Builder} with the given
@@ -366,9 +328,9 @@
         }
 
         /**
-         * Restricts the purposes for which the key can be used to the provided set of purposes.
+         * Restricts the key to being used only for the provided set of purposes.
          *
-         * <p>By default, the key can be used for encryption, decryption, signing, and verification.
+         * <p>This restriction must be specified. There is no default.
          *
          * @hide
          */
@@ -378,83 +340,43 @@
         }
 
         /**
-         * Sets the algorithm of the key.
-         *
-         * <p>The algorithm of symmetric keys can be deduced from the key itself. Thus, explicitly
-         * specifying the algorithm of symmetric keys using this method is not necessary.
-         *
-         * @hide
-         */
-        public Builder setAlgorithm(@KeyStoreKeyConstraints.AlgorithmEnum int algorithm) {
-            mAlgorithm = algorithm;
-            return this;
-        }
-
-        /**
-         * Restricts the key to being used only with the provided padding scheme. Attempts to use
+         * Restricts the key to being used only with the provided padding schemes. Attempts to use
          * the key with any other padding will be rejected.
          *
          * <p>This restriction must be specified for keys which are used for encryption/decryption.
          *
          * @hide
          */
-        public Builder setPadding(@KeyStoreKeyConstraints.PaddingEnum int padding) {
-            mPadding = padding;
+        public Builder setPaddings(@KeyStoreKeyConstraints.PaddingEnum int paddings) {
+            mPaddings = paddings;
             return this;
         }
 
         /**
-         * Restricts the key to being used only with the provided digest when generating Message
-         * Authentication Codes (MACs). Attempts to use the key with any other digest will be
-         * rejected.
+         * Restricts the key to being used only with the provided digests when generating signatures
+         * or HMACs. Attempts to use the key with any other digest will be rejected.
          *
-         * <p>For MAC keys, the default is to restrict to the digest specified in the key algorithm
-         * name.
-         *
-         * @see java.security.Key#getAlgorithm()
+         * <p>For HMAC keys, the default is to restrict to the digest specified in
+         * {@link Key#getAlgorithm()}. For asymmetric signing keys this constraint must be specified
+         * because there is no default.
          *
          * @hide
          */
-        public Builder setDigest(@KeyStoreKeyConstraints.DigestEnum int digest) {
-            mDigest = digest;
+        public Builder setDigests(@KeyStoreKeyConstraints.DigestEnum int digests) {
+            mDigests = digests;
             return this;
         }
 
         /**
-         * Restricts the key to being used only with the provided block mode when encrypting or
-         * decrypting. Attempts to use the key with any other block modes will be rejected.
+         * Restricts the key to being used only with the provided block modes. Attempts to use the
+         * key with any other block modes will be rejected.
          *
-         * <p>This restriction must be specified for keys which are used for encryption/decryption.
+         * <p>This restriction must be specified for symmetric encryption/decryption keys.
          *
          * @hide
          */
-        public Builder setBlockMode(@KeyStoreKeyConstraints.BlockModeEnum int blockMode) {
-            mBlockMode = blockMode;
-            return this;
-        }
-
-        /**
-         * Sets the minimum number of seconds that must expire since the most recent use of the key
-         * before it can be used again.
-         *
-         * <p>By default, there is no restriction on how frequently a key can be used.
-         *
-         * @hide
-         */
-        public Builder setMinSecondsBetweenOperations(int seconds) {
-            mMinSecondsBetweenOperations = seconds;
-            return this;
-        }
-
-        /**
-         * Sets the maximum number of times a key can be used without rebooting the device.
-         *
-         * <p>By default, the key can be used for an unlimited number of times.
-         *
-         * @hide
-         */
-        public Builder setMaxUsesPerBoot(int count) {
-            mMaxUsesPerBoot = count;
+        public Builder setBlockModes(@KeyStoreKeyConstraints.BlockModeEnum int blockModes) {
+            mBlockModes = blockModes;
             return this;
         }
 
@@ -464,16 +386,16 @@
          *
          * <p>By default, the key can be used without user authentication.
          *
-         * @param userAuthenticators user authenticators or empty list if this key can be accessed
+         * @param userAuthenticators user authenticators or {@code 0} if this key can be accessed
          *        without user authentication.
          *
          * @see #setUserAuthenticationValidityDurationSeconds(int)
          *
          * @hide
          */
-        public Builder setUserAuthenticators(Set<Integer> userAuthenticators) {
-            mUserAuthenticators =
-                    (userAuthenticators != null) ? new HashSet<Integer>(userAuthenticators) : null;
+        public Builder setUserAuthenticators(
+                @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators) {
+            mUserAuthenticators = userAuthenticators;
             return this;
         }
 
@@ -486,7 +408,7 @@
          * @param seconds duration in seconds or {@code 0} if the user needs to authenticate for
          *        every use of the key.
          *
-         * @see #setUserAuthenticators(Set)
+         * @see #setUserAuthenticators(int)
          *
          * @hide
          */
@@ -502,10 +424,15 @@
          * @return built instance of {@code KeyStoreParameter}
          */
         public KeyStoreParameter build() {
-            return new KeyStoreParameter(mFlags, mKeyValidityStart,
-                    mKeyValidityForOriginationEnd, mKeyValidityForConsumptionEnd, mPurposes,
-                    mAlgorithm, mPadding, mDigest, mBlockMode, mMinSecondsBetweenOperations,
-                    mMaxUsesPerBoot, mUserAuthenticators,
+            return new KeyStoreParameter(mFlags,
+                    mKeyValidityStart,
+                    mKeyValidityForOriginationEnd,
+                    mKeyValidityForConsumptionEnd,
+                    mPurposes,
+                    mPaddings,
+                    mDigests,
+                    mBlockModes,
+                    mUserAuthenticators,
                     mUserAuthenticationValidityDurationSeconds);
         }
     }
diff --git a/keystore/java/android/security/KeyStoreSecretKey.java b/keystore/java/android/security/KeyStoreSecretKey.java
index 9410127..7f0e3d3 100644
--- a/keystore/java/android/security/KeyStoreSecretKey.java
+++ b/keystore/java/android/security/KeyStoreSecretKey.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package android.security;
 
 import javax.crypto.SecretKey;
diff --git a/keystore/java/android/security/KeyStoreSecretKeyFactorySpi.java b/keystore/java/android/security/KeyStoreSecretKeyFactorySpi.java
new file mode 100644
index 0000000..09f0b00
--- /dev/null
+++ b/keystore/java/android/security/KeyStoreSecretKeyFactorySpi.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.security.keymaster.KeyCharacteristics;
+import android.security.keymaster.KeymasterDefs;
+
+import java.security.InvalidKeyException;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.KeySpec;
+import java.util.Date;
+
+import javax.crypto.SecretKey;
+import javax.crypto.SecretKeyFactorySpi;
+import javax.crypto.spec.SecretKeySpec;
+
+/**
+ * {@link SecretKeyFactorySpi} backed by Android KeyStore.
+ *
+ * @hide
+ */
+public class KeyStoreSecretKeyFactorySpi extends SecretKeyFactorySpi {
+
+    private final KeyStore mKeyStore = KeyStore.getInstance();
+
+    @Override
+    protected KeySpec engineGetKeySpec(SecretKey key,
+            @SuppressWarnings("rawtypes") Class keySpecClass) throws InvalidKeySpecException {
+        if (keySpecClass == null) {
+            throw new InvalidKeySpecException("keySpecClass == null");
+        }
+        if (!(key instanceof KeyStoreSecretKey)) {
+            throw new InvalidKeySpecException("Only Android KeyStore secret keys supported: " +
+                    ((key != null) ? key.getClass().getName() : "null"));
+        }
+        if (SecretKeySpec.class.isAssignableFrom(keySpecClass)) {
+            throw new InvalidKeySpecException(
+                    "Key material export of Android KeyStore keys is not supported");
+        }
+        if (!KeyStoreKeySpec.class.equals(keySpecClass)) {
+            throw new InvalidKeySpecException("Unsupported key spec: " + keySpecClass.getName());
+        }
+        String keyAliasInKeystore = ((KeyStoreSecretKey) key).getAlias();
+        String entryAlias;
+        if (keyAliasInKeystore.startsWith(Credentials.USER_SECRET_KEY)) {
+            entryAlias = keyAliasInKeystore.substring(Credentials.USER_SECRET_KEY.length());
+        } else {
+            throw new InvalidKeySpecException("Invalid key alias: " + keyAliasInKeystore);
+        }
+
+        KeyCharacteristics keyCharacteristics = new KeyCharacteristics();
+        int errorCode =
+                mKeyStore.getKeyCharacteristics(keyAliasInKeystore, null, null, keyCharacteristics);
+        if (errorCode != KeyStore.NO_ERROR) {
+            throw new InvalidKeySpecException("Failed to obtain information about key."
+                    + " Keystore error: " + errorCode);
+        }
+
+        @KeyStoreKeyCharacteristics.OriginEnum Integer origin;
+        int keySize;
+        @KeyStoreKeyConstraints.PurposeEnum int purposes;
+        @KeyStoreKeyConstraints.AlgorithmEnum int algorithm;
+        @KeyStoreKeyConstraints.PaddingEnum int paddings;
+        @KeyStoreKeyConstraints.DigestEnum int digests;
+        @KeyStoreKeyConstraints.BlockModeEnum int blockModes;
+        @KeyStoreKeyConstraints.UserAuthenticatorEnum int userAuthenticators;
+        @KeyStoreKeyConstraints.UserAuthenticatorEnum int teeEnforcedUserAuthenticators;
+        try {
+            origin = KeymasterUtils.getInt(keyCharacteristics, KeymasterDefs.KM_TAG_ORIGIN);
+            if (origin == null) {
+                throw new InvalidKeySpecException("Key origin not available");
+            }
+            origin = KeyStoreKeyCharacteristics.Origin.fromKeymaster(origin);
+            Integer keySizeInteger =
+                    KeymasterUtils.getInt(keyCharacteristics, KeymasterDefs.KM_TAG_KEY_SIZE);
+            if (keySizeInteger == null) {
+                throw new InvalidKeySpecException("Key size not available");
+            }
+            keySize = keySizeInteger;
+            purposes = KeyStoreKeyConstraints.Purpose.allFromKeymaster(
+                    KeymasterUtils.getInts(keyCharacteristics, KeymasterDefs.KM_TAG_PURPOSE));
+            Integer alg = KeymasterUtils.getInt(keyCharacteristics, KeymasterDefs.KM_TAG_ALGORITHM);
+            if (alg == null) {
+                throw new InvalidKeySpecException("Key algorithm not available");
+            }
+            algorithm = KeyStoreKeyConstraints.Algorithm.fromKeymaster(alg);
+            paddings = KeyStoreKeyConstraints.Padding.allFromKeymaster(
+                    KeymasterUtils.getInts(keyCharacteristics, KeymasterDefs.KM_TAG_PADDING));
+            digests = KeyStoreKeyConstraints.Digest.allFromKeymaster(
+                    KeymasterUtils.getInts(keyCharacteristics, KeymasterDefs.KM_TAG_DIGEST));
+            blockModes = KeyStoreKeyConstraints.BlockMode.allFromKeymaster(
+                    KeymasterUtils.getInts(keyCharacteristics, KeymasterDefs.KM_TAG_BLOCK_MODE));
+
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum
+            int swEnforcedKeymasterUserAuthenticators =
+                    keyCharacteristics.swEnforced.getInt(KeymasterDefs.KM_TAG_USER_AUTH_TYPE, 0);
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum
+            int hwEnforcedKeymasterUserAuthenticators =
+                    keyCharacteristics.hwEnforced.getInt(KeymasterDefs.KM_TAG_USER_AUTH_TYPE, 0);
+            @KeyStoreKeyConstraints.UserAuthenticatorEnum
+            int keymasterUserAuthenticators =
+                    swEnforcedKeymasterUserAuthenticators | hwEnforcedKeymasterUserAuthenticators;
+            userAuthenticators = KeyStoreKeyConstraints.UserAuthenticator.allFromKeymaster(
+                    keymasterUserAuthenticators);
+            teeEnforcedUserAuthenticators =
+                    KeyStoreKeyConstraints.UserAuthenticator.allFromKeymaster(
+                            hwEnforcedKeymasterUserAuthenticators);
+        } catch (IllegalArgumentException e) {
+            throw new InvalidKeySpecException("Unsupported key characteristic", e);
+        }
+
+        Date keyValidityStart =
+                KeymasterUtils.getDate(keyCharacteristics, KeymasterDefs.KM_TAG_ACTIVE_DATETIME);
+        if ((keyValidityStart != null) && (keyValidityStart.getTime() <= 0)) {
+            keyValidityStart = null;
+        }
+        Date keyValidityForOriginationEnd = KeymasterUtils.getDate(keyCharacteristics,
+                KeymasterDefs.KM_TAG_ORIGINATION_EXPIRE_DATETIME);
+        if ((keyValidityForOriginationEnd != null)
+                && (keyValidityForOriginationEnd.getTime() == Long.MAX_VALUE)) {
+            keyValidityForOriginationEnd = null;
+        }
+        Date keyValidityForConsumptionEnd = KeymasterUtils.getDate(keyCharacteristics,
+                KeymasterDefs.KM_TAG_USAGE_EXPIRE_DATETIME);
+        if ((keyValidityForConsumptionEnd != null)
+                && (keyValidityForConsumptionEnd.getTime() == Long.MAX_VALUE)) {
+            keyValidityForConsumptionEnd = null;
+        }
+        Integer userAuthenticationValidityDurationSeconds =
+                KeymasterUtils.getInt(keyCharacteristics, KeymasterDefs.KM_TAG_AUTH_TIMEOUT);
+
+        return new KeyStoreKeySpec(entryAlias,
+                origin,
+                keySize,
+                keyValidityStart,
+                keyValidityForOriginationEnd,
+                keyValidityForConsumptionEnd,
+                purposes,
+                algorithm,
+                paddings,
+                digests,
+                blockModes,
+                userAuthenticators,
+                teeEnforcedUserAuthenticators,
+                ((userAuthenticationValidityDurationSeconds != null)
+                        ? userAuthenticationValidityDurationSeconds : -1));
+    }
+
+    @Override
+    protected SecretKey engineGenerateSecret(KeySpec keySpec) throws InvalidKeySpecException {
+        throw new UnsupportedOperationException(
+                "Key import into Android KeyStore is not supported");
+    }
+
+    @Override
+    protected SecretKey engineTranslateKey(SecretKey key) throws InvalidKeyException {
+        throw new UnsupportedOperationException(
+                "Key import into Android KeyStore is not supported");
+    }
+}
diff --git a/keystore/java/android/security/KeymasterUtils.java b/keystore/java/android/security/KeymasterUtils.java
new file mode 100644
index 0000000..3143d4d
--- /dev/null
+++ b/keystore/java/android/security/KeymasterUtils.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+import android.security.keymaster.KeyCharacteristics;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @hide
+ */
+public abstract class KeymasterUtils {
+    private KeymasterUtils() {}
+
+    public static Integer getInt(KeyCharacteristics keyCharacteristics, int tag) {
+        if (keyCharacteristics.hwEnforced.containsTag(tag)) {
+            return keyCharacteristics.hwEnforced.getInt(tag, -1);
+        } else if (keyCharacteristics.swEnforced.containsTag(tag)) {
+            return keyCharacteristics.swEnforced.getInt(tag, -1);
+        } else {
+            return null;
+        }
+    }
+
+    public static List<Integer> getInts(KeyCharacteristics keyCharacteristics, int tag) {
+        List<Integer> result = new ArrayList<Integer>();
+        result.addAll(keyCharacteristics.hwEnforced.getInts(tag));
+        result.addAll(keyCharacteristics.swEnforced.getInts(tag));
+        return result;
+    }
+
+    public static Date getDate(KeyCharacteristics keyCharacteristics, int tag) {
+        Date result = keyCharacteristics.hwEnforced.getDate(tag, null);
+        if (result == null) {
+            result = keyCharacteristics.swEnforced.getDate(tag, null);
+        }
+        return result;
+    }
+
+    public static boolean getBoolean(KeyCharacteristics keyCharacteristics, int tag) {
+        if (keyCharacteristics.hwEnforced.containsTag(tag)) {
+            return keyCharacteristics.hwEnforced.getBoolean(tag, false);
+        } else {
+            return keyCharacteristics.swEnforced.getBoolean(tag, false);
+        }
+    }
+}
diff --git a/keystore/java/android/security/UserNotAuthenticatedException.java b/keystore/java/android/security/UserNotAuthenticatedException.java
new file mode 100644
index 0000000..e6342ef
--- /dev/null
+++ b/keystore/java/android/security/UserNotAuthenticatedException.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.security;
+
+/**
+ * Indicates that a cryptographic operation could not be performed because the user has not been
+ * authenticated recently enough.
+ *
+ * @hide
+ */
+public class UserNotAuthenticatedException extends CryptoOperationException {
+
+    /**
+     * Constructs a new {@code UserNotAuthenticatedException} without detail message and cause.
+     */
+    public UserNotAuthenticatedException() {
+        super("User not authenticated");
+    }
+
+    /**
+     * Constructs a new {@code UserNotAuthenticatedException} with the provided detail message and
+     * no cause.
+     */
+    public UserNotAuthenticatedException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new {@code UserNotAuthenticatedException} with the provided detail message and
+     * cause.
+     */
+    public UserNotAuthenticatedException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/keystore/tests/src/android/security/KeyStoreTest.java b/keystore/tests/src/android/security/KeyStoreTest.java
index 7468fb5e..c9a140c 100644
--- a/keystore/tests/src/android/security/KeyStoreTest.java
+++ b/keystore/tests/src/android/security/KeyStoreTest.java
@@ -712,6 +712,7 @@
         args.addInt(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_DECRYPT);
         args.addInt(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_RSA);
         args.addInt(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
         args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, 2048);
         args.addLong(KeymasterDefs.KM_TAG_RSA_PUBLIC_EXPONENT,
                 RSAKeyGenParameterSpec.F4.longValue());
@@ -735,6 +736,7 @@
         args.addInt(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_DECRYPT);
         args.addInt(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_RSA);
         args.addInt(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
         args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, 2048);
         args.addLong(KeymasterDefs.KM_TAG_RSA_PUBLIC_EXPONENT,
                 RSAKeyGenParameterSpec.F4.longValue());
@@ -769,6 +771,7 @@
         args.addInt(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
         args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, 2048);
         args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_ECB);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
         args.addBlob(KeymasterDefs.KM_TAG_APPLICATION_ID, id);
         args.addLong(KeymasterDefs.KM_TAG_RSA_PUBLIC_EXPONENT,
                 RSAKeyGenParameterSpec.F4.longValue());
@@ -806,6 +809,7 @@
         args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_OCB);
         args.addInt(KeymasterDefs.KM_TAG_CHUNK_LENGTH, 4096);
         args.addInt(KeymasterDefs.KM_TAG_MAC_LENGTH, 16);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
 
         KeyCharacteristics outCharacteristics = new KeyCharacteristics();
         int rc = mKeyStore.generateKey(name, args, null, 0, outCharacteristics);
@@ -838,6 +842,7 @@
         args.addInt(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
         args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, mode);
         args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, size);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
         return mKeyStore.importKey(name, args, KeymasterDefs.KM_KEY_FORMAT_RAW, key, 0,
                 new KeyCharacteristics());
     }
@@ -901,6 +906,7 @@
         args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_OCB);
         args.addInt(KeymasterDefs.KM_TAG_CHUNK_LENGTH, 4096);
         args.addInt(KeymasterDefs.KM_TAG_MAC_LENGTH, 16);
+        args.addBoolean(KeymasterDefs.KM_TAG_NO_AUTH_REQUIRED);
 
         KeyCharacteristics outCharacteristics = new KeyCharacteristics();
         int rc = mKeyStore.generateKey(name, args, null, 0, outCharacteristics);
@@ -922,4 +928,30 @@
         assertEquals("Operation should be pruned", KeymasterDefs.KM_ERROR_INVALID_OPERATION_HANDLE,
                 mKeyStore.update(first, null, new byte[] {0x01}).resultCode);
     }
+
+    public void testAuthNeeded() throws Exception {
+        String name = "test";
+        KeymasterArguments args = new KeymasterArguments();
+        args.addInt(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_ENCRYPT);
+        args.addInt(KeymasterDefs.KM_TAG_PURPOSE, KeymasterDefs.KM_PURPOSE_DECRYPT);
+        args.addInt(KeymasterDefs.KM_TAG_ALGORITHM, KeymasterDefs.KM_ALGORITHM_AES);
+        args.addInt(KeymasterDefs.KM_TAG_PADDING, KeymasterDefs.KM_PAD_NONE);
+        args.addInt(KeymasterDefs.KM_TAG_KEY_SIZE, 256);
+        args.addInt(KeymasterDefs.KM_TAG_BLOCK_MODE, KeymasterDefs.KM_MODE_OCB);
+        args.addInt(KeymasterDefs.KM_TAG_CHUNK_LENGTH, 4096);
+        args.addInt(KeymasterDefs.KM_TAG_MAC_LENGTH, 16);
+        args.addInt(KeymasterDefs.KM_TAG_USER_AUTH_TYPE, 1);
+
+        KeyCharacteristics outCharacteristics = new KeyCharacteristics();
+        int rc = mKeyStore.generateKey(name, args, null, 0, outCharacteristics);
+        KeymasterArguments out = new KeymasterArguments();
+        assertEquals("Generate should succeed", KeyStore.NO_ERROR, rc);
+        OperationResult result = mKeyStore.begin(name, KeymasterDefs.KM_PURPOSE_ENCRYPT,
+                true, args, null, out);
+        assertEquals("Begin should succeed", KeyStore.NO_ERROR, result.resultCode);
+        IBinder token = result.token;
+        result = mKeyStore.update(token, null, new byte[] {0x01, 0x02, 0x03, 0x04});
+        assertEquals("Update should require authorization",
+                KeymasterDefs.KM_ERROR_KEY_USER_NOT_AUTHENTICATED, result.resultCode);
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
index e66934e..fae0643 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
@@ -773,6 +773,11 @@
         synchronized (this) {
             if (DEBUG) Log.d(TAG, "setKeyguardEnabled(" + enabled + ")");
 
+            if (isSecure()) {
+                Log.d(TAG, "current mode is SecurityMode, ignore hide keyguard");
+                return;
+            }
+
             mExternallyEnabled = enabled;
 
             if (!enabled && mShowing) {
diff --git a/preloaded-classes b/preloaded-classes
index c8d8c5d..151766f 100644
--- a/preloaded-classes
+++ b/preloaded-classes
@@ -1146,8 +1146,6 @@
 android.provider.Settings$System
 android.provider.Telephony$Mms
 android.renderscript.RenderScript
-android.security.AndroidKeyPairGenerator
-android.security.AndroidKeyStore
 android.security.AndroidKeyStoreProvider
 android.speech.tts.TextToSpeechService
 android.speech.tts.TextToSpeechService$SpeechItemV1
diff --git a/rs/java/android/renderscript/Allocation.java b/rs/java/android/renderscript/Allocation.java
index 523c8fb..28547cc 100644
--- a/rs/java/android/renderscript/Allocation.java
+++ b/rs/java/android/renderscript/Allocation.java
@@ -1340,15 +1340,22 @@
 
     private void copyTo(Object array, Element.DataType dt, int arrayLen) {
         Trace.traceBegin(RenderScript.TRACE_TAG, "copyTo");
-        if (dt.mSize * arrayLen < mSize) {
-            throw new RSIllegalArgumentException(
-                "Size of output array cannot be smaller than size of allocation.");
-        }
         mRS.validate();
         boolean usePadding = false;
         if (mAutoPadding && (mType.getElement().getVectorSize() == 3)) {
             usePadding = true;
         }
+        if (usePadding) {
+            if (dt.mSize * arrayLen < mSize / 4 * 3) {
+                throw new RSIllegalArgumentException(
+                    "Size of output array cannot be smaller than size of allocation.");
+            }
+        } else {
+            if (dt.mSize * arrayLen < mSize) {
+                throw new RSIllegalArgumentException(
+                    "Size of output array cannot be smaller than size of allocation.");
+            }
+        }
         mRS.nAllocationRead(getID(mRS), array, dt, mType.mElement.mType.mSize, usePadding);
         Trace.traceEnd(RenderScript.TRACE_TAG);
     }
diff --git a/rs/java/android/renderscript/FieldPacker.java b/rs/java/android/renderscript/FieldPacker.java
index 0f967fc..de1c497 100644
--- a/rs/java/android/renderscript/FieldPacker.java
+++ b/rs/java/android/renderscript/FieldPacker.java
@@ -47,6 +47,15 @@
         // subAlign() can never work correctly for copied FieldPacker objects.
     }
 
+    static FieldPacker createFromArray(Object[] args) {
+        FieldPacker fp = new FieldPacker(RenderScript.sPointerSize * 8);
+        for (Object arg : args) {
+            fp.addSafely(arg);
+        }
+        fp.resize(fp.mPos);
+        return fp;
+    }
+
     public void align(int v) {
         if ((v <= 0) || ((v & (v - 1)) != 0)) {
             throw new RSIllegalArgumentException("argument must be a non-negative non-zero power of 2: " + v);
@@ -618,294 +627,182 @@
         return mPos;
     }
 
-    private static void addToPack(FieldPacker fp, Object obj) {
+    private void add(Object obj) {
         if (obj instanceof Boolean) {
-            fp.addBoolean(((Boolean)obj).booleanValue());
+            addBoolean((Boolean)obj);
             return;
         }
 
         if (obj instanceof Byte) {
-            fp.addI8(((Byte)obj).byteValue());
+            addI8((Byte)obj);
             return;
         }
 
         if (obj instanceof Short) {
-            fp.addI16(((Short)obj).shortValue());
+            addI16((Short)obj);
             return;
         }
 
         if (obj instanceof Integer) {
-            fp.addI32(((Integer)obj).intValue());
+            addI32((Integer)obj);
             return;
         }
 
         if (obj instanceof Long) {
-            fp.addI64(((Long)obj).longValue());
+            addI64((Long)obj);
             return;
         }
 
         if (obj instanceof Float) {
-            fp.addF32(((Float)obj).floatValue());
+            addF32((Float)obj);
             return;
         }
 
         if (obj instanceof Double) {
-            fp.addF64(((Double)obj).doubleValue());
+            addF64((Double)obj);
             return;
         }
 
         if (obj instanceof Byte2) {
-            fp.addI8((Byte2)obj);
+            addI8((Byte2)obj);
             return;
         }
 
         if (obj instanceof Byte3) {
-            fp.addI8((Byte3)obj);
+            addI8((Byte3)obj);
             return;
         }
 
         if (obj instanceof Byte4) {
-            fp.addI8((Byte4)obj);
+            addI8((Byte4)obj);
             return;
         }
 
         if (obj instanceof Short2) {
-            fp.addI16((Short2)obj);
+            addI16((Short2)obj);
             return;
         }
 
         if (obj instanceof Short3) {
-            fp.addI16((Short3)obj);
+            addI16((Short3)obj);
             return;
         }
 
         if (obj instanceof Short4) {
-            fp.addI16((Short4)obj);
+            addI16((Short4)obj);
             return;
         }
 
         if (obj instanceof Int2) {
-            fp.addI32((Int2)obj);
+            addI32((Int2)obj);
             return;
         }
 
         if (obj instanceof Int3) {
-            fp.addI32((Int3)obj);
+            addI32((Int3)obj);
             return;
         }
 
         if (obj instanceof Int4) {
-            fp.addI32((Int4)obj);
+            addI32((Int4)obj);
             return;
         }
 
         if (obj instanceof Long2) {
-            fp.addI64((Long2)obj);
+            addI64((Long2)obj);
             return;
         }
 
         if (obj instanceof Long3) {
-            fp.addI64((Long3)obj);
+            addI64((Long3)obj);
             return;
         }
 
         if (obj instanceof Long4) {
-            fp.addI64((Long4)obj);
+            addI64((Long4)obj);
             return;
         }
 
         if (obj instanceof Float2) {
-            fp.addF32((Float2)obj);
+            addF32((Float2)obj);
             return;
         }
 
         if (obj instanceof Float3) {
-            fp.addF32((Float3)obj);
+            addF32((Float3)obj);
             return;
         }
 
         if (obj instanceof Float4) {
-            fp.addF32((Float4)obj);
+            addF32((Float4)obj);
             return;
         }
 
         if (obj instanceof Double2) {
-            fp.addF64((Double2)obj);
+            addF64((Double2)obj);
             return;
         }
 
         if (obj instanceof Double3) {
-            fp.addF64((Double3)obj);
+            addF64((Double3)obj);
             return;
         }
 
         if (obj instanceof Double4) {
-            fp.addF64((Double4)obj);
+            addF64((Double4)obj);
             return;
         }
 
         if (obj instanceof Matrix2f) {
-            fp.addMatrix((Matrix2f)obj);
+            addMatrix((Matrix2f)obj);
             return;
         }
 
         if (obj instanceof Matrix3f) {
-            fp.addMatrix((Matrix3f)obj);
+            addMatrix((Matrix3f)obj);
             return;
         }
 
         if (obj instanceof Matrix4f) {
-            fp.addMatrix((Matrix4f)obj);
+            addMatrix((Matrix4f)obj);
             return;
         }
 
         if (obj instanceof BaseObj) {
-            fp.addObj((BaseObj)obj);
+            addObj((BaseObj)obj);
             return;
         }
     }
 
-    private static int getPackedSize(Object obj) {
-        if (obj instanceof Boolean) {
-            return 1;
+    private boolean resize(int newSize) {
+        if (newSize == mLen) {
+            return false;
         }
 
-        if (obj instanceof Byte) {
-            return 1;
-        }
+        byte[] newData = new byte[newSize];
+        System.arraycopy(mData, 0, newData, 0, mPos);
+        mData = newData;
+        mLen = newSize;
+        return true;
+    }
 
-        if (obj instanceof Short) {
-            return 2;
-        }
-
-        if (obj instanceof Integer) {
-            return 4;
-        }
-
-        if (obj instanceof Long) {
-            return 8;
-        }
-
-        if (obj instanceof Float) {
-            return 4;
-        }
-
-        if (obj instanceof Double) {
-            return 8;
-        }
-
-        if (obj instanceof Byte2) {
-            return 2;
-        }
-
-        if (obj instanceof Byte3) {
-            return 3;
-        }
-
-        if (obj instanceof Byte4) {
-            return 4;
-        }
-
-        if (obj instanceof Short2) {
-            return 4;
-        }
-
-        if (obj instanceof Short3) {
-            return 6;
-        }
-
-        if (obj instanceof Short4) {
-            return 8;
-        }
-
-        if (obj instanceof Int2) {
-            return 8;
-        }
-
-        if (obj instanceof Int3) {
-            return 12;
-        }
-
-        if (obj instanceof Int4) {
-            return 16;
-        }
-
-        if (obj instanceof Long2) {
-            return 16;
-        }
-
-        if (obj instanceof Long3) {
-            return 24;
-        }
-
-        if (obj instanceof Long4) {
-            return 32;
-        }
-
-        if (obj instanceof Float2) {
-            return 8;
-        }
-
-        if (obj instanceof Float3) {
-            return 12;
-        }
-
-        if (obj instanceof Float4) {
-            return 16;
-        }
-
-        if (obj instanceof Double2) {
-            return 16;
-        }
-
-        if (obj instanceof Double3) {
-            return 24;
-        }
-
-        if (obj instanceof Double4) {
-            return 32;
-        }
-
-        if (obj instanceof Matrix2f) {
-            return 16;
-        }
-
-        if (obj instanceof Matrix3f) {
-            return 36;
-        }
-
-        if (obj instanceof Matrix4f) {
-            return 64;
-        }
-
-        if (obj instanceof BaseObj) {
-            if (RenderScript.sPointerSize == 8) {
-                return 32;
-            } else {
-                return 4;
+    private void addSafely(Object obj) {
+        boolean retry;
+        final int oldPos = mPos;
+        do {
+            retry = false;
+            try {
+                add(obj);
+            } catch (ArrayIndexOutOfBoundsException e) {
+                mPos = oldPos;
+                resize(mLen * 2);
+                retry = true;
             }
-        }
-
-        return 0;
+        } while (retry);
     }
 
-    static FieldPacker createFieldPack(Object[] args) {
-        int len = 0;
-        for (Object arg : args) {
-            len += getPackedSize(arg);
-        }
-        FieldPacker fp = new FieldPacker(len);
-        for (Object arg : args) {
-            addToPack(fp, arg);
-        }
-        return fp;
-    }
-
-    private final byte mData[];
+    private byte mData[];
     private int mPos;
     private int mLen;
     private BitSet mAlignment;
-
 }
-
-
diff --git a/rs/java/android/renderscript/RenderScript.java b/rs/java/android/renderscript/RenderScript.java
index 45f0ca6..5138719 100644
--- a/rs/java/android/renderscript/RenderScript.java
+++ b/rs/java/android/renderscript/RenderScript.java
@@ -16,7 +16,6 @@
 
 package android.renderscript;
 
-import java.io.File;
 import java.lang.reflect.Method;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
@@ -130,8 +129,6 @@
     native void nContextInitToClient(long con);
     native void nContextDeinitToClient(long con);
 
-    static File mCacheDir;
-
     // this should be a monotonically increasing ID
     // used in conjunction with the API version of a device
     static final long sMinorID = 1;
@@ -146,23 +143,6 @@
         return sMinorID;
     }
 
-     /**
-     * Sets the directory to use as a persistent storage for the
-     * renderscript object file cache.
-     *
-     * @hide
-     * @param cacheDir A directory the current process can write to
-     */
-    public static void setupDiskCache(File cacheDir) {
-        if (!sInitialized) {
-            Log.e(LOG_TAG, "RenderScript.setupDiskCache() called when disabled");
-            return;
-        }
-
-        // Defer creation of cache path to nScriptCCreate().
-        mCacheDir = cacheDir;
-    }
-
     /**
      * ContextType specifies the specific type of context to be created.
      *
diff --git a/rs/java/android/renderscript/RenderScriptCacheDir.java b/rs/java/android/renderscript/RenderScriptCacheDir.java
new file mode 100644
index 0000000..95a9d75
--- /dev/null
+++ b/rs/java/android/renderscript/RenderScriptCacheDir.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2008-2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.renderscript;
+
+import java.io.File;
+
+/**
+ * Used only for tracking the RenderScript cache directory.
+ * @hide
+ */
+public class RenderScriptCacheDir {
+     /**
+     * Sets the directory to use as a persistent storage for the
+     * renderscript object file cache.
+     *
+     * @hide
+     * @param cacheDir A directory the current process can write to
+     */
+    public static void setupDiskCache(File cacheDir) {
+        // Defer creation of cache path to nScriptCCreate().
+        mCacheDir = cacheDir;
+    }
+
+    static File mCacheDir;
+
+}
diff --git a/rs/java/android/renderscript/ScriptC.java b/rs/java/android/renderscript/ScriptC.java
index 64d21e4..bf706c1 100644
--- a/rs/java/android/renderscript/ScriptC.java
+++ b/rs/java/android/renderscript/ScriptC.java
@@ -124,7 +124,7 @@
 
         // Create the RS cache path if we haven't done so already.
         if (mCachePath == null) {
-            File f = new File(rs.mCacheDir, CACHE_PATH);
+            File f = new File(RenderScriptCacheDir.mCacheDir, CACHE_PATH);
             mCachePath = f.getAbsolutePath();
             f.mkdirs();
         }
@@ -135,7 +135,7 @@
     private static synchronized long internalStringCreate(RenderScript rs, String resName, byte[] bitcode) {
         // Create the RS cache path if we haven't done so already.
         if (mCachePath == null) {
-            File f = new File(rs.mCacheDir, CACHE_PATH);
+            File f = new File(RenderScriptCacheDir.mCacheDir, CACHE_PATH);
             mCachePath = f.getAbsolutePath();
             f.mkdirs();
         }
diff --git a/rs/java/android/renderscript/ScriptGroup2.java b/rs/java/android/renderscript/ScriptGroup2.java
index 4a56572..857e9fb 100644
--- a/rs/java/android/renderscript/ScriptGroup2.java
+++ b/rs/java/android/renderscript/ScriptGroup2.java
@@ -44,6 +44,7 @@
 public class ScriptGroup2 extends BaseObj {
 
     public static class Closure extends BaseObj {
+        private Object[] mArgs;
         private Allocation mReturnValue;
         private Map<Script.FieldID, Object> mBindings;
 
@@ -62,8 +63,9 @@
                        Object[] args, Map<Script.FieldID, Object> globals) {
             super(0, rs);
 
+            mArgs = args;
             mReturnValue = Allocation.createTyped(rs, returnType);
-            mBindings = new HashMap<Script.FieldID, Object>();
+            mBindings = globals;
             mGlobalFuture = new HashMap<Script.FieldID, Future>();
 
             int numValues = args.length + globals.size();
@@ -110,9 +112,10 @@
         public Closure(RenderScript rs, Script.InvokeID invokeID,
                        Object[] args, Map<Script.FieldID, Object> globals) {
             super(0, rs);
-            mFP = FieldPacker.createFieldPack(args);
+            mFP = FieldPacker.createFromArray(args);
 
-            mBindings = new HashMap<Script.FieldID, Object>();
+            mArgs = args;
+            mBindings = globals;
             mGlobalFuture = new HashMap<Script.FieldID, Future>();
 
             int numValues = globals.size();
@@ -198,11 +201,13 @@
         }
 
         void setArg(int index, Object obj) {
+            mArgs[index] = obj;
             ValueAndSize vs = new ValueAndSize(mRS, obj);
             mRS.nClosureSetArg(getID(mRS), index, vs.value, vs.size);
         }
 
         void setGlobal(Script.FieldID fieldID, Object obj) {
+            mBindings.put(fieldID, obj);
             ValueAndSize vs = new ValueAndSize(mRS, obj);
             mRS.nClosureSetGlobal(getID(mRS), fieldID.getID(mRS), vs.value, vs.size);
         }
diff --git a/rs/java/android/renderscript/ScriptIntrinsicBlur.java b/rs/java/android/renderscript/ScriptIntrinsicBlur.java
index 5c4edd3..60e2b6d9 100644
--- a/rs/java/android/renderscript/ScriptIntrinsicBlur.java
+++ b/rs/java/android/renderscript/ScriptIntrinsicBlur.java
@@ -34,7 +34,7 @@
      * Create an intrinsic for applying a blur to an allocation. The
      * default radius is 5.0.
      *
-     * Supported elements types are {@link Element#U8_4}
+     * Supported elements types are {@link Element#U8_4 Element#U8}
      *
      * @param rs The RenderScript context
      * @param e Element type for inputs and outputs
diff --git a/rs/jni/android_renderscript_RenderScript.cpp b/rs/jni/android_renderscript_RenderScript.cpp
index ba20881..3591199 100644
--- a/rs/jni/android_renderscript_RenderScript.cpp
+++ b/rs/jni/android_renderscript_RenderScript.cpp
@@ -372,7 +372,7 @@
   return (jlong)(uintptr_t)rsClosureCreate(
       (RsContext)con, (RsScriptKernelID)kernelID, (RsAllocation)returnValue,
       fieldIDs, (size_t)fieldIDs_length, values, (size_t)values_length,
-      (size_t*)sizes, (size_t)sizes_length,
+      (int*)sizes, (size_t)sizes_length,
       depClosures, (size_t)depClosures_length,
       depFieldIDs, (size_t)depFieldIDs_length);
 }
@@ -405,7 +405,7 @@
   return (jlong)(uintptr_t)rsInvokeClosureCreate(
       (RsContext)con, (RsScriptInvokeID)invokeID, jParams, jParamLength,
       fieldIDs, (size_t)fieldIDs_length, values, (size_t)values_length,
-      (size_t*)sizes, (size_t)sizes_length);
+      (int*)sizes, (size_t)sizes_length);
 }
 
 static void
diff --git a/services/core/Android.mk b/services/core/Android.mk
index 5c45201..43249e7 100644
--- a/services/core/Android.mk
+++ b/services/core/Android.mk
@@ -10,5 +10,6 @@
     java/com/android/server/am/EventLogTags.logtags
 
 LOCAL_JAVA_LIBRARIES := android.policy telephony-common
+LOCAL_STATIC_JAVA_LIBRARIES := tzdata_update
 
 include $(BUILD_STATIC_JAVA_LIBRARY)
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index d9ef766..758b0fc 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -2022,6 +2022,8 @@
                         ReapUnvalidatedNetworks.DONT_REAP);
             }
         }
+        NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo);
+        if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name);
     }
 
     // If this method proves to be too slow then we can maintain a separate
diff --git a/services/core/java/com/android/server/am/ActiveServices.java b/services/core/java/com/android/server/am/ActiveServices.java
index 059dde1..4e7aa77 100755
--- a/services/core/java/com/android/server/am/ActiveServices.java
+++ b/services/core/java/com/android/server/am/ActiveServices.java
@@ -2127,8 +2127,16 @@
             }
         }
 
-        // First clear app state from services.
-        for (int i=app.services.size()-1; i>=0; i--) {
+        // Clean up any connections this application has to other services.
+        for (int i = app.connections.size() - 1; i >= 0; i--) {
+            ConnectionRecord r = app.connections.valueAt(i);
+            removeConnectionLocked(r, app, null);
+        }
+        updateServiceConnectionActivitiesLocked(app);
+        app.connections.clear();
+
+        // Clear app state from services.
+        for (int i = app.services.size() - 1; i >= 0; i--) {
             ServiceRecord sr = app.services.valueAt(i);
             synchronized (sr.stats.getBatteryStats()) {
                 sr.stats.stopLaunchedLocked();
@@ -2188,14 +2196,6 @@
             }
         }
 
-        // Clean up any connections this application has to other services.
-        for (int i=app.connections.size()-1; i>=0; i--) {
-            ConnectionRecord r = app.connections.valueAt(i);
-            removeConnectionLocked(r, app, null);
-        }
-        updateServiceConnectionActivitiesLocked(app);
-        app.connections.clear();
-
         ServiceMap smap = getServiceMap(app.userId);
 
         // Now do remaining service cleanup.
@@ -2228,7 +2228,7 @@
                 EventLog.writeEvent(EventLogTags.AM_SERVICE_CRASHED_TOO_MUCH,
                         sr.userId, sr.crashCount, sr.shortName, app.pid);
                 bringDownServiceLocked(sr);
-            } else if (!allowRestart) {
+            } else if (!allowRestart || !mAm.isUserRunningLocked(sr.userId, false)) {
                 bringDownServiceLocked(sr);
             } else {
                 boolean canceled = scheduleServiceRestartLocked(sr, true);
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index ab1a1e8..09ebe60 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -169,6 +169,7 @@
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.IPermissionController;
+import android.os.IProcessInfoService;
 import android.os.IRemoteCallback;
 import android.os.IUserManager;
 import android.os.Looper;
@@ -1918,6 +1919,7 @@
                 ServiceManager.addService("cpuinfo", new CpuBinder(this));
             }
             ServiceManager.addService("permission", new PermissionController(this));
+            ServiceManager.addService("processinfo", new ProcessInfoService(this));
 
             ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(
                     "android", STOCK_PM_FLAGS);
@@ -2787,10 +2789,38 @@
         if (!isolated) {
             app = getProcessRecordLocked(processName, info.uid, keepIfLarge);
             checkTime(startTime, "startProcess: after getProcessRecord");
+
+            if ((intentFlags & Intent.FLAG_FROM_BACKGROUND) != 0) {
+                // If we are in the background, then check to see if this process
+                // is bad.  If so, we will just silently fail.
+                if (mBadProcesses.get(info.processName, info.uid) != null) {
+                    if (DEBUG_PROCESSES) Slog.v(TAG, "Bad process: " + info.uid
+                            + "/" + info.processName);
+                    return null;
+                }
+            } else {
+                // When the user is explicitly starting a process, then clear its
+                // crash count so that we won't make it bad until they see at
+                // least one crash dialog again, and make the process good again
+                // if it had been bad.
+                if (DEBUG_PROCESSES) Slog.v(TAG, "Clearing bad process: " + info.uid
+                        + "/" + info.processName);
+                mProcessCrashTimes.remove(info.processName, info.uid);
+                if (mBadProcesses.get(info.processName, info.uid) != null) {
+                    EventLog.writeEvent(EventLogTags.AM_PROC_GOOD,
+                            UserHandle.getUserId(info.uid), info.uid,
+                            info.processName);
+                    mBadProcesses.remove(info.processName, info.uid);
+                    if (app != null) {
+                        app.bad = false;
+                    }
+                }
+            }
         } else {
             // If this is an isolated process, it can't re-use an existing process.
             app = null;
         }
+
         // We don't have to do anything more if:
         // (1) There is an existing application record; and
         // (2) The caller doesn't think it is dead, OR there is no thread
@@ -2824,35 +2854,6 @@
         String hostingNameStr = hostingName != null
                 ? hostingName.flattenToShortString() : null;
 
-        if (!isolated) {
-            if ((intentFlags&Intent.FLAG_FROM_BACKGROUND) != 0) {
-                // If we are in the background, then check to see if this process
-                // is bad.  If so, we will just silently fail.
-                if (mBadProcesses.get(info.processName, info.uid) != null) {
-                    if (DEBUG_PROCESSES) Slog.v(TAG, "Bad process: " + info.uid
-                            + "/" + info.processName);
-                    return null;
-                }
-            } else {
-                // When the user is explicitly starting a process, then clear its
-                // crash count so that we won't make it bad until they see at
-                // least one crash dialog again, and make the process good again
-                // if it had been bad.
-                if (DEBUG_PROCESSES) Slog.v(TAG, "Clearing bad process: " + info.uid
-                        + "/" + info.processName);
-                mProcessCrashTimes.remove(info.processName, info.uid);
-                if (mBadProcesses.get(info.processName, info.uid) != null) {
-                    EventLog.writeEvent(EventLogTags.AM_PROC_GOOD,
-                            UserHandle.getUserId(info.uid), info.uid,
-                            info.processName);
-                    mBadProcesses.remove(info.processName, info.uid);
-                    if (app != null) {
-                        app.bad = false;
-                    }
-                }
-            }
-        }
-
         if (app == null) {
             checkTime(startTime, "startProcess: creating new process record");
             app = newProcessRecordLocked(info, processName, isolated, isolatedUid);
@@ -4590,17 +4591,13 @@
             finishInstrumentationLocked(app, Activity.RESULT_CANCELED, info);
         }
 
-        if (!restarting) {
-            if (!mStackSupervisor.resumeTopActivitiesLocked()) {
-                // If there was nothing to resume, and we are not already
-                // restarting this process, but there is a visible activity that
-                // is hosted by the process...  then make sure all visible
-                // activities are running, taking care of restarting this
-                // process.
-                if (hasVisibleActivities) {
-                    mStackSupervisor.ensureActivitiesVisibleLocked(null, 0);
-                }
-            }
+        if (!restarting && hasVisibleActivities && !mStackSupervisor.resumeTopActivitiesLocked()) {
+            // If there was nothing to resume, and we are not already
+            // restarting this process, but there is a visible activity that
+            // is hosted by the process...  then make sure all visible
+            // activities are running, taking care of restarting this
+            // process.
+            mStackSupervisor.ensureActivitiesVisibleLocked(null, 0);
         }
     }
 
@@ -6805,7 +6802,46 @@
             }
         }
     }
-    
+
+    // =========================================================
+    // PROCESS INFO
+    // =========================================================
+
+    static class ProcessInfoService extends IProcessInfoService.Stub {
+        final ActivityManagerService mActivityManagerService;
+        ProcessInfoService(ActivityManagerService activityManagerService) {
+            mActivityManagerService = activityManagerService;
+        }
+
+        @Override
+        public void getProcessStatesFromPids(/*in*/ int[] pids, /*out*/ int[] states) {
+            mActivityManagerService.getProcessStatesForPIDs(/*in*/ pids, /*out*/ states);
+        }
+    }
+
+    /**
+     * For each PID in the given input array, write the current process state
+     * for that process into the output array, or -1 to indicate that no
+     * process with the given PID exists.
+     */
+    public void getProcessStatesForPIDs(/*in*/ int[] pids, /*out*/ int[] states) {
+        if (pids == null) {
+            throw new NullPointerException("pids");
+        } else if (states == null) {
+            throw new NullPointerException("states");
+        } else if (pids.length != states.length) {
+            throw new IllegalArgumentException("input and output arrays have different lengths!");
+        }
+
+        synchronized (mPidsSelfLocked) {
+            for (int i = 0; i < pids.length; i++) {
+                ProcessRecord pr = mPidsSelfLocked.get(pids[i]);
+                states[i] = (pr == null) ? ActivityManager.PROCESS_STATE_NONEXISTENT :
+                        pr.curProcState;
+            }
+        }
+    }
+
     // =========================================================
     // PERMISSIONS
     // =========================================================
@@ -17626,8 +17662,12 @@
         mFullPssPending = true;
         mPendingPssProcesses.ensureCapacity(mLruProcesses.size());
         mPendingPssProcesses.clear();
-        for (int i=mLruProcesses.size()-1; i>=0; i--) {
+        for (int i = mLruProcesses.size() - 1; i >= 0; i--) {
             ProcessRecord app = mLruProcesses.get(i);
+            if (app.thread == null
+                    || app.curProcState == ActivityManager.PROCESS_STATE_NONEXISTENT) {
+                continue;
+            }
             if (memLowered || now > (app.lastStateTime+ProcessList.PSS_ALL_INTERVAL)) {
                 app.pssProcState = app.setProcState;
                 app.nextPssTime = ProcessList.computeNextPssTime(app.curProcState, true,
@@ -17943,8 +17983,8 @@
                 }
             }
         }
-        if (app.setProcState < 0 || ProcessList.procStatesDifferForMem(app.curProcState,
-                app.setProcState)) {
+        if (app.setProcState == ActivityManager.PROCESS_STATE_NONEXISTENT
+                || ProcessList.procStatesDifferForMem(app.curProcState, app.setProcState)) {
             if (false && mTestPssMode && app.setProcState >= 0 && app.lastStateTime <= (now-200)) {
                 // Experimental code to more aggressively collect pss while
                 // running test...  the problem is that this tends to collect
diff --git a/services/core/java/com/android/server/am/ActivityRecord.java b/services/core/java/com/android/server/am/ActivityRecord.java
index b1b2a5c..1497c1d 100755
--- a/services/core/java/com/android/server/am/ActivityRecord.java
+++ b/services/core/java/com/android/server/am/ActivityRecord.java
@@ -982,24 +982,21 @@
     }
 
     private ActivityRecord getWaitingHistoryRecordLocked() {
-        // First find the real culprit...  if we are waiting
-        // for another app to start, then we have paused dispatching
-        // for this activity.
-        ActivityRecord r = this;
-        if (r.waitingVisible) {
+        // First find the real culprit...  if this activity is waiting for
+        // another activity to start or has stopped, then the key dispatching
+        // timeout should not be caused by this.
+        if (waitingVisible || stopped) {
             final ActivityStack stack = mStackSupervisor.getFocusedStack();
-            // Hmmm, who might we be waiting for?
-            r = stack.mResumedActivity;
+            // Try to use the one which is closest to top.
+            ActivityRecord r = stack.mResumedActivity;
             if (r == null) {
                 r = stack.mPausingActivity;
             }
-            // Both of those null?  Fall back to 'this' again
-            if (r == null) {
-                r = this;
+            if (r != null) {
+                return r;
             }
         }
-
-        return r;
+        return this;
     }
 
     public boolean keyDispatchingTimedOut(String reason) {
diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index 9f22aa9..ada16e7 100644
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -899,6 +899,11 @@
                         r.userId, System.identityHashCode(r), r.shortComponentName,
                         mPausingActivity != null
                             ? mPausingActivity.shortComponentName : "(none)");
+                if (r.finishing && r.state == ActivityState.PAUSING) {
+                    if (DEBUG_PAUSE) Slog.v(TAG,
+                            "Executing finish of failed to pause activity: " + r);
+                    finishCurrentActivityLocked(r, FINISH_AFTER_VISIBLE, false);
+                }
             }
         }
     }
@@ -3390,6 +3395,9 @@
                 if (DEBUG_CLEANUP) Slog.v(
                     TAG, "Record #" + i + " " + r + ": app=" + r.app);
                 if (r.app == app) {
+                    if (r.visible) {
+                        hasVisibleActivities = true;
+                    }
                     boolean remove;
                     if ((!r.haveState && !r.stateNotNeeded) || r.finishing) {
                         // Don't currently have state for the activity, or
@@ -3431,9 +3439,6 @@
                         // it can be restarted later when needed.
                         if (localLOGV) Slog.v(
                             TAG, "Keeping entry, setting app to null");
-                        if (r.visible) {
-                            hasVisibleActivities = true;
-                        }
                         if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity "
                                 + r);
                         r.app = null;
@@ -3900,16 +3905,18 @@
     }
 
     void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) {
+        boolean focusedStack = mStackSupervisor.getFocusedStack() == this;
+        boolean topTask = true;
         for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) {
             final TaskRecord task = mTaskHistory.get(taskNdx);
+            if (task.getTopActivity() == null) {
+                continue;
+            }
             ActivityRecord r = null;
             ActivityRecord top = null;
             int numActivities = 0;
             int numRunning = 0;
             final ArrayList<ActivityRecord> activities = task.mActivities;
-            if (activities.isEmpty()) {
-                continue;
-            }
             if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) {
                 continue;
             }
@@ -3938,14 +3945,18 @@
             ci.baseActivity = r.intent.getComponent();
             ci.topActivity = top.intent.getComponent();
             ci.lastActiveTime = task.lastActiveTime;
+            if (focusedStack && topTask) {
+                // Give the latest time to ensure foreground task can be sorted
+                // at the first, because lastActiveTime of creating task is 0.
+                ci.lastActiveTime = System.currentTimeMillis();
+                topTask = false;
+            }
 
             if (top.task != null) {
                 ci.description = top.task.lastDescription;
             }
             ci.numActivities = numActivities;
             ci.numRunning = numRunning;
-            //System.out.println(
-            //    "#" + maxNum + ": " + " descr=" + ci.description);
             list.add(ci);
         }
     }
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 27c5404..8ab2368 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -607,17 +607,21 @@
     }
 
     boolean allResumedActivitiesVisible() {
+        boolean foundResumed = false;
         for (int displayNdx = mActivityDisplays.size() - 1; displayNdx >= 0; --displayNdx) {
             ArrayList<ActivityStack> stacks = mActivityDisplays.valueAt(displayNdx).mStacks;
             for (int stackNdx = stacks.size() - 1; stackNdx >= 0; --stackNdx) {
                 final ActivityStack stack = stacks.get(stackNdx);
                 final ActivityRecord r = stack.mResumedActivity;
-                if (r != null && (!r.nowVisible || r.waitingVisible)) {
-                    return false;
+                if (r != null) {
+                    if (!r.nowVisible || r.waitingVisible) {
+                        return false;
+                    }
+                    foundResumed = true;
                 }
             }
         }
-        return true;
+        return foundResumed;
     }
 
     /**
diff --git a/services/core/java/com/android/server/am/ProcessRecord.java b/services/core/java/com/android/server/am/ProcessRecord.java
index a6c616a..466831a 100644
--- a/services/core/java/com/android/server/am/ProcessRecord.java
+++ b/services/core/java/com/android/server/am/ProcessRecord.java
@@ -16,6 +16,8 @@
 
 package com.android.server.am;
 
+import static android.app.ActivityManager.PROCESS_STATE_NONEXISTENT;
+
 import android.util.ArraySet;
 import android.util.EventLog;
 import android.util.Slog;
@@ -83,10 +85,10 @@
     int curSchedGroup;          // Currently desired scheduling class
     int setSchedGroup;          // Last set to background scheduling class
     int trimMemoryLevel;        // Last selected memory trimming level
-    int curProcState = -1;      // Currently computed process state: ActivityManager.PROCESS_STATE_*
-    int repProcState = -1;      // Last reported process state
-    int setProcState = -1;      // Last set process state in process tracker
-    int pssProcState = -1;      // The proc state we are currently requesting pss for
+    int curProcState = PROCESS_STATE_NONEXISTENT; // Currently computed process state
+    int repProcState = PROCESS_STATE_NONEXISTENT; // Last reported process state
+    int setProcState = PROCESS_STATE_NONEXISTENT; // Last set process state in process tracker
+    int pssProcState = PROCESS_STATE_NONEXISTENT; // Currently requesting pss for
     boolean serviceb;           // Process currently is on the service B list
     boolean serviceHighRam;     // We are forcing to service B list due to its RAM use
     boolean setIsForeground;    // Running foreground UI when last set?
@@ -418,7 +420,7 @@
                         tracker.getMemFactorLocked(), SystemClock.uptimeMillis(), pkgList);
                 origBase.makeInactive();
             }
-            baseProcessTracker = tracker.getProcessStateLocked(info.packageName, info.uid,
+            baseProcessTracker = tracker.getProcessStateLocked(info.packageName, uid,
                     info.versionCode, processName);
             baseProcessTracker.makeActive();
             for (int i=0; i<pkgList.size(); i++) {
@@ -426,7 +428,7 @@
                 if (holder.state != null && holder.state != origBase) {
                     holder.state.makeInactive();
                 }
-                holder.state = tracker.getProcessStateLocked(pkgList.keyAt(i), info.uid,
+                holder.state = tracker.getProcessStateLocked(pkgList.keyAt(i), uid,
                         info.versionCode, processName);
                 if (holder.state != baseProcessTracker) {
                     holder.state.makeActive();
@@ -617,7 +619,7 @@
                     versionCode);
             if (baseProcessTracker != null) {
                 holder.state = tracker.getProcessStateLocked(
-                        pkg, info.uid, versionCode, processName);
+                        pkg, uid, versionCode, processName);
                 pkgList.put(pkg, holder);
                 if (holder.state != baseProcessTracker) {
                     holder.state.makeActive();
@@ -664,7 +666,7 @@
                 }
                 pkgList.clear();
                 ProcessStats.ProcessState ps = tracker.getProcessStateLocked(
-                        info.packageName, info.uid, info.versionCode, processName);
+                        info.packageName, uid, info.versionCode, processName);
                 ProcessStats.ProcessStateHolder holder = new ProcessStats.ProcessStateHolder(
                         info.versionCode);
                 holder.state = ps;
diff --git a/services/core/java/com/android/server/pm/Installer.java b/services/core/java/com/android/server/pm/Installer.java
index 5cde8ea..b4a44a6 100644
--- a/services/core/java/com/android/server/pm/Installer.java
+++ b/services/core/java/com/android/server/pm/Installer.java
@@ -16,6 +16,7 @@
 
 package com.android.server.pm;
 
+import android.annotation.Nullable;
 import android.content.Context;
 import android.content.pm.PackageStats;
 import android.os.Build;
@@ -83,14 +84,15 @@
     }
 
     public int dexopt(String apkPath, int uid, boolean isPublic, String pkgName,
-            String instructionSet, boolean vmSafeMode, boolean debuggable) {
+            String instructionSet, boolean vmSafeMode, boolean debuggable,
+            @Nullable String outputPath) {
         if (!isValidInstructionSet(instructionSet)) {
             Slog.e(TAG, "Invalid instruction set: " + instructionSet);
             return -1;
         }
 
         return mInstaller.dexopt(apkPath, uid, isPublic, pkgName, instructionSet, vmSafeMode,
-                debuggable);
+                debuggable, outputPath);
     }
 
     public int idmap(String targetApkPath, String overlayApkPath, int uid) {
@@ -134,6 +136,16 @@
         return mInstaller.execute(builder.toString());
     }
 
+    /**
+     * Removes packageDir or its subdirectory
+     */
+    public int rmPackageDir(String packageDir) {
+        StringBuilder builder = new StringBuilder("rmpackagedir");
+        builder.append(' ');
+        builder.append(packageDir);
+        return mInstaller.execute(builder.toString());
+    }
+
     public int remove(String name, int userId) {
         StringBuilder builder = new StringBuilder("remove");
         builder.append(' ');
@@ -331,6 +343,15 @@
         return (mInstaller.execute(builder.toString()) == 0);
     }
 
+    public int createOatDir(String oatDir, String dexInstructionSet) {
+        StringBuilder builder = new StringBuilder("createoatdir");
+        builder.append(' ');
+        builder.append(oatDir);
+        builder.append(' ');
+        builder.append(dexInstructionSet);
+        return mInstaller.execute(builder.toString());
+    }
+
     /**
      * Returns true iff. {@code instructionSet} is a valid instruction set.
      */
diff --git a/services/core/java/com/android/server/pm/InstructionSets.java b/services/core/java/com/android/server/pm/InstructionSets.java
index 79e7a20..5092ebf 100644
--- a/services/core/java/com/android/server/pm/InstructionSets.java
+++ b/services/core/java/com/android/server/pm/InstructionSets.java
@@ -74,6 +74,7 @@
      * a native bridge this might be different than the one shared libraries use.
      */
     public static String getDexCodeInstructionSet(String sharedLibraryIsa) {
+        // TODO b/19550105 Build mapping once instead of querying each time
         String dexCodeIsa = SystemProperties.get("ro.dalvik.vm.isa." + sharedLibraryIsa);
         return TextUtils.isEmpty(dexCodeIsa) ? sharedLibraryIsa : dexCodeIsa;
     }
@@ -111,4 +112,13 @@
 
         return allInstructionSets;
     }
+
+    public static String getPrimaryInstructionSet(ApplicationInfo info) {
+        if (info.primaryCpuAbi == null) {
+            return getPreferredInstructionSet();
+        }
+
+        return VMRuntime.getInstructionSet(info.primaryCpuAbi);
+    }
+
 }
diff --git a/services/core/java/com/android/server/pm/PackageDexOptimizer.java b/services/core/java/com/android/server/pm/PackageDexOptimizer.java
index 2dbce0a..680ec4b 100644
--- a/services/core/java/com/android/server/pm/PackageDexOptimizer.java
+++ b/services/core/java/com/android/server/pm/PackageDexOptimizer.java
@@ -16,6 +16,7 @@
 
 package com.android.server.pm;
 
+import android.annotation.Nullable;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageParser;
 import android.os.UserHandle;
@@ -23,6 +24,7 @@
 import android.util.Log;
 import android.util.Slog;
 
+import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -38,7 +40,9 @@
  * Helper class for running dexopt command on packages.
  */
 final class PackageDexOptimizer {
-    static final String TAG = "PackageManager.DexOptimizer";
+    private static final String TAG = "PackageManager.DexOptimizer";
+    static final String OAT_DIR_NAME = "oat";
+    // TODO b/19550105 Remove error codes and use exceptions
     static final int DEX_OPT_SKIPPED = 0;
     static final int DEX_OPT_PERFORMED = 1;
     static final int DEX_OPT_DEFERRED = 2;
@@ -117,19 +121,30 @@
                     final byte isDexOptNeeded = DexFile.isDexOptNeededInternal(path,
                             pkg.packageName, dexCodeInstructionSet, defer);
                     if (forceDex || (!defer && isDexOptNeeded == DexFile.DEXOPT_NEEDED)) {
+                        File oatDir = createOatDirIfSupported(pkg, dexCodeInstructionSet);
                         Log.i(TAG, "Running dexopt on: " + path + " pkg="
                                 + pkg.applicationInfo.packageName + " isa=" + dexCodeInstructionSet
-                                + " vmSafeMode=" + vmSafeMode + " debuggable=" + debuggable);
+                                + " vmSafeMode=" + vmSafeMode + " debuggable=" + debuggable
+                                + " oatDir = " + oatDir);
                         final int sharedGid = UserHandle.getSharedAppGid(pkg.applicationInfo.uid);
-                        final int ret = mPackageManagerService.mInstaller.dexopt(path, sharedGid,
-                                !pkg.isForwardLocked(), pkg.packageName, dexCodeInstructionSet,
-                                vmSafeMode, debuggable);
 
-                        if (ret < 0) {
-                            // Don't bother running dexopt again if we failed, it will probably
-                            // just result in an error again. Also, don't bother dexopting for other
-                            // paths & ISAs.
-                            return DEX_OPT_FAILED;
+                        if (oatDir != null) {
+                            int ret = mPackageManagerService.mInstaller.dexopt(
+                                    path, sharedGid, !pkg.isForwardLocked(), pkg.packageName,
+                                    dexCodeInstructionSet, vmSafeMode, debuggable,
+                                    oatDir.getAbsolutePath());
+                            if (ret < 0) {
+                                return DEX_OPT_FAILED;
+                            }
+                        } else {
+                            final int ret = mPackageManagerService.mInstaller
+                                    .dexopt(path, sharedGid,
+                                            !pkg.isForwardLocked(), pkg.packageName,
+                                            dexCodeInstructionSet,
+                                            vmSafeMode, debuggable, null);
+                            if (ret < 0) {
+                                return DEX_OPT_FAILED;
+                            }
                         }
 
                         performedDexOpt = true;
@@ -186,6 +201,36 @@
         return performedDexOpt ? DEX_OPT_PERFORMED : DEX_OPT_SKIPPED;
     }
 
+    /**
+     * Creates oat dir for the specified package. In certain cases oat directory
+     * <strong>cannot</strong> be created:
+     * <ul>
+     *      <li>{@code pkg} is a system app, which is not updated.</li>
+     *      <li>Package location is not a directory, i.e. monolithic install.</li>
+     * </ul>
+     *
+     * @return oat directory or null, if oat directory cannot be created.
+     */
+    @Nullable
+    private File createOatDirIfSupported(PackageParser.Package pkg, String dexInstructionSet)
+            throws IOException {
+        if (pkg.isSystemApp() && !pkg.isUpdatedSystemApp()) {
+            return null;
+        }
+        File codePath = new File(pkg.codePath);
+        if (codePath.isDirectory()) {
+            File oatDir = getOatDir(codePath);
+            mPackageManagerService.mInstaller.createOatDir(oatDir.getAbsolutePath(),
+                    dexInstructionSet);
+            return oatDir;
+        }
+        return null;
+    }
+
+    static File getOatDir(File codePath) {
+        return new File(codePath, OAT_DIR_NAME);
+    }
+
     private void performDexOptLibsLI(ArrayList<String> libs, String[] instructionSets,
             boolean forceDex, boolean defer, ArraySet<String> done) {
         for (String libName : libs) {
@@ -209,7 +254,7 @@
 
     public void addPackageForDeferredDexopt(PackageParser.Package pkg) {
         if (mDeferredDexOpt == null) {
-            mDeferredDexOpt = new ArraySet<PackageParser.Package>();
+            mDeferredDexOpt = new ArraySet<>();
         }
         mDeferredDexOpt.add(pkg);
     }
diff --git a/services/core/java/com/android/server/pm/PackageInstallerService.java b/services/core/java/com/android/server/pm/PackageInstallerService.java
index 2150e9a..95d7a52 100644
--- a/services/core/java/com/android/server/pm/PackageInstallerService.java
+++ b/services/core/java/com/android/server/pm/PackageInstallerService.java
@@ -53,7 +53,6 @@
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Environment;
-import android.os.FileUtils;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.Looper;
@@ -225,9 +224,10 @@
             for (File stage : unclaimedStages) {
                 Slog.w(TAG, "Deleting orphan stage " + stage);
                 if (stage.isDirectory()) {
-                    FileUtils.deleteContents(stage);
+                    mPm.mInstaller.rmPackageDir(stage.getAbsolutePath());
+                } else {
+                    stage.delete();
                 }
-                stage.delete();
             }
 
             // Clean up orphaned icons
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index aba930f..bb8a785 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -59,6 +59,7 @@
 import static com.android.server.pm.InstructionSets.getDexCodeInstructionSet;
 import static com.android.server.pm.InstructionSets.getDexCodeInstructionSets;
 import static com.android.server.pm.InstructionSets.getPreferredInstructionSet;
+import static com.android.server.pm.InstructionSets.getPrimaryInstructionSet;
 
 import android.util.ArrayMap;
 
@@ -1872,9 +1873,10 @@
         removeDataDirsLI(ps.name);
         if (ps.codePath != null) {
             if (ps.codePath.isDirectory()) {
-                FileUtils.deleteContents(ps.codePath);
+                mInstaller.rmPackageDir(ps.codePath.getAbsolutePath());
+            } else {
+                ps.codePath.delete();
             }
-            ps.codePath.delete();
         }
         if (ps.resourcePath != null && !ps.resourcePath.equals(ps.codePath)) {
             if (ps.resourcePath.isDirectory()) {
@@ -4190,9 +4192,10 @@
                         e.error == PackageManager.INSTALL_FAILED_INVALID_APK) {
                     logCriticalInfo(Log.WARN, "Deleting invalid package at " + file);
                     if (file.isDirectory()) {
-                        FileUtils.deleteContents(file);
+                        mInstaller.rmPackageDir(file.getAbsolutePath());
+                    } else {
+                        file.delete();
                     }
-                    file.delete();
                 }
             }
         }
@@ -4640,7 +4643,7 @@
             // Give priority to system apps.
             for (Iterator<PackageParser.Package> it = pkgs.iterator(); it.hasNext();) {
                 PackageParser.Package pkg = it.next();
-                if (isSystemApp(pkg) && !isUpdatedSystemApp(pkg)) {
+                if (isSystemApp(pkg) && !pkg.isUpdatedSystemApp()) {
                     if (DEBUG_DEXOPT) {
                         Log.i(TAG, "Adding system app " + sortedPkgs.size() + ": " + pkg.packageName);
                     }
@@ -4651,7 +4654,7 @@
             // Give priority to updated system apps.
             for (Iterator<PackageParser.Package> it = pkgs.iterator(); it.hasNext();) {
                 PackageParser.Package pkg = it.next();
-                if (isUpdatedSystemApp(pkg)) {
+                if (pkg.isUpdatedSystemApp()) {
                     if (DEBUG_DEXOPT) {
                         Log.i(TAG, "Adding updated system app " + sortedPkgs.size() + ": " + pkg.packageName);
                     }
@@ -4772,14 +4775,6 @@
         return performDexOpt(packageName, instructionSet, false);
     }
 
-    private static String getPrimaryInstructionSet(ApplicationInfo info) {
-        if (info.primaryCpuAbi == null) {
-            return getPreferredInstructionSet();
-        }
-
-        return VMRuntime.getInstructionSet(info.primaryCpuAbi);
-    }
-
     public boolean performDexOpt(String packageName, String instructionSet, boolean backgroundDexopt) {
         boolean dexopt = mLazyDexOpt || backgroundDexopt;
         boolean updateUsage = !backgroundDexopt;  // Don't update usage if this is just a backgroundDexopt
@@ -5513,7 +5508,7 @@
         final String path = scanFile.getPath();
         final String codePath = pkg.applicationInfo.getCodePath();
         final String cpuAbiOverride = deriveAbiOverride(pkg.cpuAbiOverride, pkgSetting);
-        if (isSystemApp(pkg) && !isUpdatedSystemApp(pkg)) {
+        if (isSystemApp(pkg) && !pkg.isUpdatedSystemApp()) {
             setBundledAppAbisAndRoots(pkg, pkgSetting);
 
             // If we haven't found any native libraries for the app, check if it has
@@ -5728,7 +5723,6 @@
                 throw new PackageManagerException(INSTALL_FAILED_DEXOPT, "scanPackageLI");
             }
         }
-
         if (mFactoryTest && pkg.requestedPermissions.contains(
                 android.Manifest.permission.FACTORY_TEST)) {
             pkg.applicationInfo.flags |= ApplicationInfo.FLAG_FACTORY_TEST;
@@ -5744,7 +5738,7 @@
                     for (int i=0; i<pkg.libraryNames.size(); i++) {
                         String name = pkg.libraryNames.get(i);
                         boolean allowed = false;
-                        if (isUpdatedSystemApp(pkg)) {
+                        if (pkg.isUpdatedSystemApp()) {
                             // New library entries can only be added through the
                             // system image.  This is important to get rid of a lot
                             // of nasty edge cases: for example if we allowed a non-
@@ -6350,7 +6344,7 @@
         final ApplicationInfo info = pkg.applicationInfo;
         final String codePath = pkg.codePath;
         final File codeFile = new File(codePath);
-        final boolean bundledApp = isSystemApp(info) && !isUpdatedSystemApp(info);
+        final boolean bundledApp = info.isSystemApp() && !info.isUpdatedSystemApp();
         final boolean asecApp = info.isForwardLocked() || isExternal(info);
 
         info.nativeLibraryRootDir = null;
@@ -7002,7 +6996,7 @@
             if (isSystemApp(pkg)) {
                 // For updated system applications, a system permission
                 // is granted only if it had been defined by the original application.
-                if (isUpdatedSystemApp(pkg)) {
+                if (pkg.isUpdatedSystemApp()) {
                     final PackageSetting sysPs = mSettings
                             .getDisabledSystemPkgLPr(pkg.packageName);
                     final GrantedPermissions origGp = sysPs.sharedUser != null
@@ -7090,7 +7084,7 @@
         }
 
         public final void addActivity(PackageParser.Activity a, String type) {
-            final boolean systemApp = isSystemApp(a.info.applicationInfo);
+            final boolean systemApp = a.info.applicationInfo.isSystemApp();
             mActivities.put(a.getComponentName(), a);
             if (DEBUG_SHOW_INFO)
                 Log.v(
@@ -7217,7 +7211,7 @@
             } else {
                 res.icon = info.icon;
             }
-            res.system = isSystemApp(res.activityInfo.applicationInfo);
+            res.system = res.activityInfo.applicationInfo.isSystemApp();
             return res;
         }
 
@@ -7433,7 +7427,7 @@
             res.labelRes = info.labelRes;
             res.nonLocalizedLabel = info.nonLocalizedLabel;
             res.icon = info.icon;
-            res.system = isSystemApp(res.serviceInfo.applicationInfo);
+            res.system = res.serviceInfo.applicationInfo.isSystemApp();
             return res;
         }
 
@@ -7656,7 +7650,7 @@
             res.labelRes = info.labelRes;
             res.nonLocalizedLabel = info.nonLocalizedLabel;
             res.icon = info.icon;
-            res.system = isSystemApp(res.providerInfo.applicationInfo);
+            res.system = res.providerInfo.applicationInfo.isSystemApp();
             return res;
         }
 
@@ -9386,9 +9380,10 @@
             }
 
             if (codeFile.isDirectory()) {
-                FileUtils.deleteContents(codeFile);
+                mInstaller.rmPackageDir(codeFile.getAbsolutePath());
+            } else {
+                codeFile.delete();
             }
-            codeFile.delete();
 
             if (resourceFile != null && !FileUtils.contains(codeFile, resourceFile)) {
                 resourceFile.delete();
@@ -9830,22 +9825,6 @@
         return result;
     }
 
-    // Utility method used to ignore ADD/REMOVE events
-    // by directory observer.
-    private static boolean ignoreCodePath(String fullPathStr) {
-        String apkName = deriveCodePathName(fullPathStr);
-        int idx = apkName.lastIndexOf(INSTALL_PACKAGE_SUFFIX);
-        if (idx != -1 && ((idx+1) < apkName.length())) {
-            // Make sure the package ends with a numeral
-            String version = apkName.substring(idx+1);
-            try {
-                Integer.parseInt(version);
-                return true;
-            } catch (NumberFormatException e) {}
-        }
-        return false;
-    }
-    
     // Utility method that returns the relative package path with respect
     // to the installation directory. Like say for /data/data/com.test-1.apk
     // string com.test-1 is returned.
@@ -10454,17 +10433,27 @@
             return;
         }
 
+        // Run dexopt before old package gets removed, to minimize time when app is not available
+        int result = mPackageDexOptimizer
+                .performDexOpt(pkg, null /* instruction sets */, true /* forceDex */,
+                        false /* defer */, false /* inclDependencies */);
+        if (result == PackageDexOptimizer.DEX_OPT_FAILED) {
+            res.setError(INSTALL_FAILED_DEXOPT, "Dexopt failed for " + pkg.codePath);
+            return;
+        }
+
         if (!args.doRename(res.returnCode, pkg, oldCodePath)) {
             res.setError(INSTALL_FAILED_INSUFFICIENT_STORAGE, "Failed rename");
             return;
         }
 
+        // Call with SCAN_NO_DEX, since dexopt has already been made
         if (replace) {
-            replacePackageLI(pkg, parseFlags, scanFlags | SCAN_REPLACING, args.user,
+            replacePackageLI(pkg, parseFlags, scanFlags | SCAN_REPLACING | SCAN_NO_DEX, args.user,
                     installerPackageName, res);
         } else {
-            installNewPackageLI(pkg, parseFlags, scanFlags | SCAN_DELETE_DATA_ON_FAILURES,
-                    args.user, installerPackageName, res);
+            installNewPackageLI(pkg, parseFlags, scanFlags | SCAN_DELETE_DATA_ON_FAILURES
+                            | SCAN_NO_DEX, args.user, installerPackageName, res);
         }
         synchronized (mPackages) {
             final PackageSetting ps = mSettings.mPackages.get(pkgName);
@@ -10502,10 +10491,6 @@
         return (pkg.applicationInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0;
     }
 
-    private static boolean isSystemApp(ApplicationInfo info) {
-        return (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
-    }
-
     private static boolean isSystemApp(PackageSetting ps) {
         return (ps.pkgFlags & ApplicationInfo.FLAG_SYSTEM) != 0;
     }
@@ -10514,14 +10499,6 @@
         return (ps.pkgFlags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
     }
 
-    private static boolean isUpdatedSystemApp(PackageParser.Package pkg) {
-        return (pkg.applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
-    }
-
-    private static boolean isUpdatedSystemApp(ApplicationInfo info) {
-        return (info.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
-    }
-
     private int packageFlagsToInstallFlags(PackageSetting ps) {
         int installFlags = 0;
         if (isExternal(ps)) {
diff --git a/services/core/java/com/android/server/updates/TZInfoInstallReceiver.java b/services/core/java/com/android/server/updates/TZInfoInstallReceiver.java
deleted file mode 100644
index 2fe68f8..0000000
--- a/services/core/java/com/android/server/updates/TZInfoInstallReceiver.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server.updates;
-
-import android.util.Base64;
-
-import java.io.IOException;
-
-public class TZInfoInstallReceiver extends ConfigUpdateInstallReceiver {
-
-    public TZInfoInstallReceiver() {
-        super("/data/misc/zoneinfo/", "tzdata", "metadata/", "version");
-    }
-
-    @Override
-    protected void install(byte[] encodedContent, int version) throws IOException {
-        super.install(Base64.decode(encodedContent, Base64.DEFAULT), version);
-    }
-}
diff --git a/services/core/java/com/android/server/updates/TzDataInstallReceiver.java b/services/core/java/com/android/server/updates/TzDataInstallReceiver.java
new file mode 100644
index 0000000..b260e4e
--- /dev/null
+++ b/services/core/java/com/android/server/updates/TzDataInstallReceiver.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.updates;
+
+import android.util.Slog;
+
+import java.io.File;
+import java.io.IOException;
+import libcore.tzdata.update.TzDataBundleInstaller;
+
+/**
+ * An install receiver responsible for installing timezone data updates.
+ */
+public class TzDataInstallReceiver extends ConfigUpdateInstallReceiver {
+
+    private static final String TAG = "TZDataInstallReceiver";
+
+    private static final File TZ_DATA_DIR = new File("/data/misc/zoneinfo");
+    private static final String UPDATE_DIR_NAME = TZ_DATA_DIR.getPath() + "/updates/";
+    private static final String UPDATE_METADATA_DIR_NAME = "metadata/";
+    private static final String UPDATE_VERSION_FILE_NAME = "version";
+    private static final String UPDATE_CONTENT_FILE_NAME = "tzdata_bundle.zip";
+
+    private final TzDataBundleInstaller installer;
+
+    public TzDataInstallReceiver() {
+        super(UPDATE_DIR_NAME, UPDATE_CONTENT_FILE_NAME, UPDATE_METADATA_DIR_NAME,
+                UPDATE_VERSION_FILE_NAME);
+        installer = new TzDataBundleInstaller(TAG, TZ_DATA_DIR);
+    }
+
+    @Override
+    protected void install(byte[] content, int version) throws IOException {
+        boolean valid = installer.install(content);
+        Slog.i(TAG, "Timezone data install valid for this device: " + valid);
+        // Even if !valid, we call super.install(). Only in the event of an exception should we
+        // not. If we didn't do this we could attempt to install repeatedly.
+        super.install(content, version);
+    }
+}
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 109785c..8998d39 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -504,7 +504,12 @@
     int mLastDisplayFreezeDuration = 0;
     Object mLastFinishedFreezeSource = null;
     boolean mWaitingForConfig = false;
-    boolean mWindowsFreezingScreen = false;
+
+    final static int WINDOWS_FREEZING_SCREENS_NONE = 0;
+    final static int WINDOWS_FREEZING_SCREENS_ACTIVE = 1;
+    final static int WINDOWS_FREEZING_SCREENS_TIMEOUT = 2;
+    private int mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_NONE;
+
     boolean mClientFreezingScreen = false;
     int mAppsFreezingScreen = 0;
     int mLastWindowForcedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
@@ -4626,19 +4631,19 @@
                     wtoken.hiddenRequested, HIDE_STACK_CRAWLS ?
                             null : new RuntimeException("here").fillInStackTrace());
 
+            mOpeningApps.remove(wtoken);
+            mClosingApps.remove(wtoken);
+            wtoken.waitingToShow = wtoken.waitingToHide = false;
+            wtoken.hiddenRequested = !visible;
+
             // If we are preparing an app transition, then delay changing
             // the visibility of this token until we execute that transition.
             if (okToDisplay() && mAppTransition.isTransitionSet()) {
-                wtoken.hiddenRequested = !visible;
-
                 if (!wtoken.startingDisplayed) {
                     if (DEBUG_APP_TRANSITIONS) Slog.v(
                             TAG, "Setting dummy animation on: " + wtoken);
                     wtoken.mAppAnimator.setDummyAnimation();
                 }
-                mOpeningApps.remove(wtoken);
-                mClosingApps.remove(wtoken);
-                wtoken.waitingToShow = wtoken.waitingToHide = false;
                 wtoken.inPendingTransaction = true;
                 if (visible) {
                     mOpeningApps.add(wtoken);
@@ -4712,7 +4717,8 @@
                 WindowState w = wtoken.allAppWindows.get(i);
                 if (w.mAppFreezing) {
                     w.mAppFreezing = false;
-                    if (w.mHasSurface && !w.mOrientationChanging) {
+                    if (w.mHasSurface && !w.mOrientationChanging
+                            && mWindowsFreezingScreen != WINDOWS_FREEZING_SCREENS_TIMEOUT) {
                         if (DEBUG_ORIENTATION) Slog.v(TAG, "set mOrientationChanging of " + w);
                         w.mOrientationChanging = true;
                         mInnerFields.mOrientationChangeComplete = false;
@@ -4761,7 +4767,7 @@
                 if (mAppsFreezingScreen == 1) {
                     startFreezingDisplayLocked(false, 0, 0);
                     mH.removeMessages(H.APP_FREEZE_TIMEOUT);
-                    mH.sendEmptyMessageDelayed(H.APP_FREEZE_TIMEOUT, 5000);
+                    mH.sendEmptyMessageDelayed(H.APP_FREEZE_TIMEOUT, 2000);
                 }
             }
             final int N = wtoken.allAppWindows.size();
@@ -6550,7 +6556,7 @@
         mAltOrientation = altOrientation;
         mPolicy.setRotationLw(mRotation);
 
-        mWindowsFreezingScreen = true;
+        mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_ACTIVE;
         mH.removeMessages(H.WINDOW_FREEZE_TIMEOUT);
         mH.sendEmptyMessageDelayed(H.WINDOW_FREEZE_TIMEOUT, WINDOW_FREEZE_TIMEOUT_DURATION);
         mWaitingForConfig = true;
@@ -7920,6 +7926,7 @@
                     // TODO(multidisplay): Can non-default displays rotate?
                     synchronized (mWindowMap) {
                         Slog.w(TAG, "Window freeze timeout expired.");
+                        mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_TIMEOUT;
                         final WindowList windows = getDefaultWindowListLocked();
                         int i = windows.size();
                         while (i > 0) {
@@ -7991,6 +7998,7 @@
                 case APP_FREEZE_TIMEOUT: {
                     synchronized (mWindowMap) {
                         Slog.w(TAG, "App freeze timeout expired.");
+                        mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_TIMEOUT;
                         final int numStacks = mStackIdToStack.size();
                         for (int stackNdx = 0; stackNdx < numStacks; ++stackNdx) {
                             final TaskStack stack = mStackIdToStack.valueAt(stackNdx);
@@ -9076,13 +9084,13 @@
         // If the screen is currently frozen or off, then keep
         // it frozen/off until this window draws at its new
         // orientation.
-        if (!okToDisplay()) {
+        if (!okToDisplay() && mWindowsFreezingScreen != WINDOWS_FREEZING_SCREENS_TIMEOUT) {
             if (DEBUG_ORIENTATION) Slog.v(TAG, "Changing surface while display frozen: " + w);
             w.mOrientationChanging = true;
             w.mLastFreezeDuration = 0;
             mInnerFields.mOrientationChangeComplete = false;
-            if (!mWindowsFreezingScreen) {
-                mWindowsFreezingScreen = true;
+            if (mWindowsFreezingScreen == WINDOWS_FREEZING_SCREENS_NONE) {
+                mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_ACTIVE;
                 // XXX should probably keep timeout from
                 // when we first froze the display.
                 mH.removeMessages(H.WINDOW_FREEZE_TIMEOUT);
@@ -10107,8 +10115,8 @@
                 "With display frozen, orientationChangeComplete="
                 + mInnerFields.mOrientationChangeComplete);
         if (mInnerFields.mOrientationChangeComplete) {
-            if (mWindowsFreezingScreen) {
-                mWindowsFreezingScreen = false;
+            if (mWindowsFreezingScreen != WINDOWS_FREEZING_SCREENS_NONE) {
+                mWindowsFreezingScreen = WINDOWS_FREEZING_SCREENS_NONE;
                 mLastFinishedFreezeSource = mInnerFields.mLastWindowFreezeSource;
                 mH.removeMessages(H.WINDOW_FREEZE_TIMEOUT);
             }
@@ -10394,7 +10402,7 @@
         } else {
             mInnerFields.mOrientationChangeComplete = true;
             mInnerFields.mLastWindowFreezeSource = mAnimator.mLastWindowFreezeSource;
-            if (mWindowsFreezingScreen) {
+            if (mWindowsFreezingScreen != WINDOWS_FREEZING_SCREENS_NONE) {
                 doRequest = true;
             }
         }
@@ -10739,7 +10747,8 @@
             return;
         }
 
-        if (mWaitingForConfig || mAppsFreezingScreen > 0 || mWindowsFreezingScreen
+        if (mWaitingForConfig || mAppsFreezingScreen > 0
+                || mWindowsFreezingScreen == WINDOWS_FREEZING_SCREENS_ACTIVE
                 || mClientFreezingScreen || !mOpeningApps.isEmpty()) {
             if (DEBUG_ORIENTATION) Slog.d(TAG,
                 "stopFreezingDisplayLocked: Returning mWaitingForConfig=" + mWaitingForConfig
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 978f5c3..938c1ce 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -1434,6 +1434,11 @@
             mOrientationChanging = false;
             mLastFreezeDuration = (int)(SystemClock.elapsedRealtime()
                     - mService.mDisplayFreezeTime);
+            // We are assuming the hosting process is dead or in a zombie state.
+            Slog.w(TAG, "Failed to report 'resized' to the client of " + this
+                    + ", removing this window.");
+            mService.mPendingRemove.add(this);
+            mService.requestTraversalLocked();
         }
     }
 
diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index a6b862e..beb94fd 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -22,7 +22,7 @@
 
 // STATUST: mingw does seem to redefine UNKNOWN_ERROR from our enum value, so a cast is necessary.
 
-#if HAVE_PRINTF_ZD
+#if !defined(_WIN32)
 #  define ZD "%zd"
 #  define ZD_TYPE ssize_t
 #  define STATUST(x) x
diff --git a/tools/aapt/ResourceTable.cpp b/tools/aapt/ResourceTable.cpp
index 585a6de..c5fccbf 100644
--- a/tools/aapt/ResourceTable.cpp
+++ b/tools/aapt/ResourceTable.cpp
@@ -20,7 +20,7 @@
 
 // SSIZE: mingw does not have signed size_t == ssize_t.
 // STATUST: mingw does seem to redefine UNKNOWN_ERROR from our enum value, so a cast is necessary.
-#if HAVE_PRINTF_ZD
+#if !defined(_WIN32)
 #  define SSIZE(x) x
 #  define STATUST(x) x
 #else
diff --git a/tools/aapt/StringPool.cpp b/tools/aapt/StringPool.cpp
index a18e9f1..9908c44 100644
--- a/tools/aapt/StringPool.cpp
+++ b/tools/aapt/StringPool.cpp
@@ -13,7 +13,7 @@
 #include "ResourceTable.h"
 
 // SSIZE: mingw does not have signed size_t == ssize_t.
-#if HAVE_PRINTF_ZD
+#if !defined(_WIN32)
 #  define ZD "%zd"
 #  define ZD_TYPE ssize_t
 #  define SSIZE(x) x
diff --git a/tools/aapt/XMLNode.cpp b/tools/aapt/XMLNode.cpp
index b38b2ed..9033cf7 100644
--- a/tools/aapt/XMLNode.cpp
+++ b/tools/aapt/XMLNode.cpp
@@ -18,7 +18,7 @@
 
 // SSIZE: mingw does not have signed size_t == ssize_t.
 // STATUST: mingw does seem to redefine UNKNOWN_ERROR from our enum value, so a cast is necessary.
-#if HAVE_PRINTF_ZD
+#if !defined(_WIN32)
 #  define SSIZE(x) x
 #  define STATUST(x) x
 #else