diff --git a/encryptedfs_provisioning.h b/encryptedfs_provisioning.h
new file mode 100644
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--- /dev/null
+++ b/encryptedfs_provisioning.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include <stdio.h>
+
+#ifndef __ENCRYPTEDFS_PROVISIONING_H__
+#define __ENCRYPTEDFS_PROVISIONING_H__
+
+#define MODE_ENCRYPTED_FS_DISABLED    0
+#define MODE_ENCRYPTED_FS_ENABLED     1
+
+#define ENCRYPTED_FS_OK               0
+#define ENCRYPTED_FS_ERROR          (-1)
+
+#define ENCRYPTED_FS_KEY_SIZE        16
+#define ENCRYPTED_FS_SALT_SIZE       16
+#define ENCRYPTED_FS_MAX_HASH_SIZE  128
+#define ENTROPY_MAX_SIZE        4096
+
+struct encrypted_fs_info {
+    int mode;
+    char key[ENCRYPTED_FS_KEY_SIZE];
+    char salt[ENCRYPTED_FS_SALT_SIZE];
+    int salt_length;
+    char hash[ENCRYPTED_FS_MAX_HASH_SIZE];
+    int hash_length;
+    char entropy[ENTROPY_MAX_SIZE];
+    int entropy_length;
+};
+
+typedef struct encrypted_fs_info encrypted_fs_info;
+
+int read_encrypted_fs_info(encrypted_fs_info *secure_fs_data);
+
+int restore_encrypted_fs_info(encrypted_fs_info *secure_data);
+
+#endif /* __ENCRYPTEDFS_PROVISIONING_H__ */
+