1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdio.h> 18 19 #ifndef __ENCRYPTEDFS_PROVISIONING_H__ 20 #define __ENCRYPTEDFS_PROVISIONING_H__ 21 22 #define MODE_ENCRYPTED_FS_DISABLED 0 23 #define MODE_ENCRYPTED_FS_ENABLED 1 24 25 #define ENCRYPTED_FS_OK 0 26 #define ENCRYPTED_FS_ERROR (-1) 27 28 #define ENCRYPTED_FS_KEY_SIZE 16 29 #define ENCRYPTED_FS_SALT_SIZE 16 30 #define ENCRYPTED_FS_MAX_HASH_SIZE 128 31 #define ENTROPY_MAX_SIZE 4096 32 33 struct encrypted_fs_info { 34 int mode; 35 char key[ENCRYPTED_FS_KEY_SIZE]; 36 char salt[ENCRYPTED_FS_SALT_SIZE]; 37 int salt_length; 38 char hash[ENCRYPTED_FS_MAX_HASH_SIZE]; 39 int hash_length; 40 char entropy[ENTROPY_MAX_SIZE]; 41 int entropy_length; 42 }; 43 44 typedef struct encrypted_fs_info encrypted_fs_info; 45 46 int read_encrypted_fs_info(encrypted_fs_info *secure_fs_data); 47 48 int restore_encrypted_fs_info(encrypted_fs_info *secure_data); 49 50 #endif /* __ENCRYPTEDFS_PROVISIONING_H__ */ 51 52