7ba7500953
fscrypt aosp doc: https://source.android.com/security/encryption/file-based kernel fscrypt doc: https://www.kernel.org/doc/html/v4.18/filesystems/fscrypt.html This commit implements the ability for TWRP to use fscrypt to decrypt files on the fscrypt implementation. It has been implemented mostly in a new successor library to e4crypt called libtwrpfscrypt. Most of the code was ported from AOSP vold. Notable updates include: - updated policy storage by libtar - lookup of fbe policies by libtwrpfscrypt - threaded keystore operations Big thanks to Dees_Troy for the initial trailblazing of encryption in TWRP. Change-Id: I69cd2eba3693a9914e00213d4943229635d0cdae
40 lines
1.1 KiB
C++
Executable File
40 lines
1.1 KiB
C++
Executable File
/*
|
|
* Copyright (C) 2016 Team Win Recovery 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>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "fscrypt_policy.h"
|
|
|
|
#define FS_KEY_DESCRIPTOR_SIZE 8
|
|
|
|
int main(int argc, char *argv[]) {
|
|
if (argc != 2) {
|
|
printf("Must specify a path\n");
|
|
return -1;
|
|
} else {
|
|
fscrypt_encryption_policy fep;
|
|
if (fscrypt_policy_get_struct(argv[1], &fep)) {
|
|
char policy_hex[FS_KEY_DESCRIPTOR_SIZE_HEX];
|
|
policy_to_hex(fep.master_key_descriptor, policy_hex);
|
|
printf("%s\n", policy_hex);
|
|
} else {
|
|
printf("No policy set\n");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|