Break out password_handle_t into its own file
Change-Id: Id3069a8bb3a90b7c01c45c2740b9ff618b76086b
diff --git a/include/gatekeeper/password_handle.h b/include/gatekeeper/password_handle.h
new file mode 100644
index 0000000..9bf4cb2
--- /dev/null
+++ b/include/gatekeeper/password_handle.h
@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+#ifndef GATEKEEPER_PASSWORD_HANDLE_H_
+#define GATEKEEPER_PASSWORD_HANDLE_H_
+
+namespace gatekeeper {
+
+typedef uint64_t secure_id_t;
+typedef uint64_t salt_t;
+/**
+ * structure for easy serialization
+ * and deserialization of password handles.
+ */
+static const uint8_t HANDLE_VERSION = 0;
+struct __attribute__ ((__packed__)) password_handle_t {
+ // fields included in signature
+ uint8_t version;
+ secure_id_t user_id;
+ secure_id_t authenticator_id;
+
+ // fields not included in signature
+ salt_t salt;
+ uint8_t signature[32];
+};
+}
+
+
+#endif // GATEKEEPER_PASSWORD_HANDLE_H_