diff --git a/keystore/permissions.h b/keystore/permissions.h
new file mode 100644
index 0000000..f5f1831
--- /dev/null
+++ b/keystore/permissions.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 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 KEYSTORE_PERMISSIONS_H_
+#define KEYSTORE_PERMISSIONS_H_
+
+#include <unistd.h>
+
+/* Here are the permissions, actions, users, and the main function. */
+enum perm_t {
+    P_GET_STATE = 1 << 0,
+    P_GET = 1 << 1,
+    P_INSERT = 1 << 2,
+    P_DELETE = 1 << 3,
+    P_EXIST = 1 << 4,
+    P_LIST = 1 << 5,
+    P_RESET = 1 << 6,
+    P_PASSWORD = 1 << 7,
+    P_LOCK = 1 << 8,
+    P_UNLOCK = 1 << 9,
+    P_IS_EMPTY = 1 << 10,
+    P_SIGN = 1 << 11,
+    P_VERIFY = 1 << 12,
+    P_GRANT = 1 << 13,
+    P_DUPLICATE = 1 << 14,
+    P_CLEAR_UID = 1 << 15,
+    P_ADD_AUTH = 1 << 16,
+    P_USER_CHANGED = 1 << 17,
+};
+
+const char* get_perm_label(perm_t perm);
+
+/**
+ * Returns the UID that the callingUid should act as. This is here for
+ * legacy support of the WiFi and VPN systems and should be removed
+ * when WiFi can operate in its own namespace.
+ */
+uid_t get_keystore_euid(uid_t uid);
+
+bool has_permission(uid_t uid, perm_t perm, pid_t spid);
+
+/**
+ * Returns true if the callingUid is allowed to interact in the targetUid's
+ * namespace.
+ */
+bool is_granted_to(uid_t callingUid, uid_t targetUid);
+
+int configure_selinux();
+
+#endif  // KEYSTORE_PERMISSIONS_H_