diff --git a/core/java/android/security/IKeystoreService.aidl b/core/java/android/security/IKeystoreService.aidl
index 409542d..7cf1d71 100644
--- a/core/java/android/security/IKeystoreService.aidl
+++ b/core/java/android/security/IKeystoreService.aidl
@@ -31,7 +31,7 @@
  */
 interface IKeystoreService {
     int getState(int userId);
-    byte[] get(String name);
+    byte[] get(String name, int uid);
     int insert(String name, in byte[] item, int uid, int flags);
     int del(String name, int uid);
     int exist(String name, int uid);
@@ -49,7 +49,7 @@
     byte[] get_pubkey(String name);
     int grant(String name, int granteeUid);
     int ungrant(String name, int granteeUid);
-    long getmtime(String name);
+    long getmtime(String name, int uid);
     int duplicate(String srcKey, int srcUid, String destKey, int destUid);
     int is_hardware_backed(String string);
     int clear_uid(long uid);
@@ -59,13 +59,13 @@
     int generateKey(String alias, in KeymasterArguments arguments, in byte[] entropy, int uid,
         int flags, out KeyCharacteristics characteristics);
     int getKeyCharacteristics(String alias, in KeymasterBlob clientId, in KeymasterBlob appId,
-        out KeyCharacteristics characteristics);
+        int uid, out KeyCharacteristics characteristics);
     int importKey(String alias, in KeymasterArguments arguments, int format,
         in byte[] keyData, int uid, int flags, out KeyCharacteristics characteristics);
     ExportResult exportKey(String alias, int format, in KeymasterBlob clientId,
-        in KeymasterBlob appId);
+        in KeymasterBlob appId, int uid);
     OperationResult begin(IBinder appToken, String alias, int purpose, boolean pruneable,
-        in KeymasterArguments params, in byte[] entropy);
+        in KeymasterArguments params, in byte[] entropy, int uid);
     OperationResult update(IBinder token, in KeymasterArguments params, in byte[] input);
     OperationResult finish(IBinder token, in KeymasterArguments params, in byte[] signature,
         in byte[] entropy);
diff --git a/keystore/java/android/security/KeyStore.java b/keystore/java/android/security/KeyStore.java
index 98b44dc..a27d9e0 100644
--- a/keystore/java/android/security/KeyStore.java
+++ b/keystore/java/android/security/KeyStore.java
@@ -155,15 +155,19 @@
         return state() == State.UNLOCKED;
     }
 
-    public byte[] get(String key) {
+    public byte[] get(String key, int uid) {
         try {
-            return mBinder.get(key);
+            return mBinder.get(key, uid);
         } catch (RemoteException e) {
             Log.w(TAG, "Cannot connect to keystore", e);
             return null;
         }
     }
 
+    public byte[] get(String key) {
+        return get(key, UID_SELF);
+    }
+
     public boolean put(String key, byte[] value, int uid, int flags) {
         return insert(key, value, uid, flags) == NO_ERROR;
     }
@@ -348,9 +352,9 @@
      * Returns the last modification time of the key in milliseconds since the
      * epoch. Will return -1L if the key could not be found or other error.
      */
-    public long getmtime(String key) {
+    public long getmtime(String key, int uid) {
         try {
-            final long millis = mBinder.getmtime(key);
+            final long millis = mBinder.getmtime(key, uid);
             if (millis == -1L) {
                 return -1L;
             }
@@ -362,6 +366,10 @@
         }
     }
 
+    public long getmtime(String key) {
+        return getmtime(key, UID_SELF);
+    }
+
     public boolean duplicate(String srcKey, int srcUid, String destKey, int destUid) {
         try {
             return mBinder.duplicate(srcKey, srcUid, destKey, destUid) == NO_ERROR;
@@ -423,15 +431,20 @@
     }
 
     public int getKeyCharacteristics(String alias, KeymasterBlob clientId, KeymasterBlob appId,
-            KeyCharacteristics outCharacteristics) {
+            int uid, KeyCharacteristics outCharacteristics) {
         try {
-            return mBinder.getKeyCharacteristics(alias, clientId, appId, outCharacteristics);
+            return mBinder.getKeyCharacteristics(alias, clientId, appId, uid, outCharacteristics);
         } catch (RemoteException e) {
             Log.w(TAG, "Cannot connect to keystore", e);
             return SYSTEM_ERROR;
         }
     }
 
+    public int getKeyCharacteristics(String alias, KeymasterBlob clientId, KeymasterBlob appId,
+            KeyCharacteristics outCharacteristics) {
+        return getKeyCharacteristics(alias, clientId, appId, UID_SELF, outCharacteristics);
+    }
+
     public int importKey(String alias, KeymasterArguments args, int format, byte[] keyData,
             int uid, int flags, KeyCharacteristics outCharacteristics) {
         try {
@@ -449,9 +462,23 @@
     }
 
     public ExportResult exportKey(String alias, int format, KeymasterBlob clientId,
-            KeymasterBlob appId) {
+            KeymasterBlob appId, int uid) {
         try {
-            return mBinder.exportKey(alias, format, clientId, appId);
+            return mBinder.exportKey(alias, format, clientId, appId, uid);
+        } catch (RemoteException e) {
+            Log.w(TAG, "Cannot connect to keystore", e);
+            return null;
+        }
+    }
+    public ExportResult exportKey(String alias, int format, KeymasterBlob clientId,
+            KeymasterBlob appId) {
+        return exportKey(alias, format, clientId, appId, UID_SELF);
+    }
+
+    public OperationResult begin(String alias, int purpose, boolean pruneable,
+            KeymasterArguments args, byte[] entropy, int uid) {
+        try {
+            return mBinder.begin(getToken(), alias, purpose, pruneable, args, entropy, uid);
         } catch (RemoteException e) {
             Log.w(TAG, "Cannot connect to keystore", e);
             return null;
@@ -460,12 +487,7 @@
 
     public OperationResult begin(String alias, int purpose, boolean pruneable,
             KeymasterArguments args, byte[] entropy) {
-        try {
-            return mBinder.begin(getToken(), alias, purpose, pruneable, args, entropy);
-        } catch (RemoteException e) {
-            Log.w(TAG, "Cannot connect to keystore", e);
-            return null;
-        }
+        return begin(alias, purpose, pruneable, args, entropy, UID_SELF);
     }
 
     public OperationResult update(IBinder token, KeymasterArguments arguments, byte[] input) {