Files
android_bootable_recovery/crypto/fscrypt/fscryptpolicyget.cpp
bigbiff a957f078be FsCrypt update: support fscrypt policies v1 and v2
This patchset introduces support decryption for Android 11.

In this update we deprecate ext4crypt. To specify the
policy version to use, use TW_USE_FSCRYPT_POLICY := 1 or
TW_USE_FSCRYPT_POLICY := 2. By default policy version will
be set to 2 if this variable is omitted.

Change-Id: I62a29c1bef36c259ec4b11259f71be613d20a112
2021-05-18 20:35:51 -04:00

43 lines
1.2 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"
#include "fscrypt/fscrypt.h"
int main(int argc, char *argv[]) {
if (argc != 2) {
printf("Must specify a path\n");
return -1;
} else {
#ifdef USE_FSCRYPT_POLICY_V1
fscrypt_policy_v1 fep;
#else
fscrypt_policy_v2 fep;
#endif
if (fscrypt_policy_get_struct(argv[1], &fep)) {
char policy_hex[FSCRYPT_KEY_IDENTIFIER_HEX_SIZE];
bytes_to_hex(fep.master_key_identifier, FSCRYPT_KEY_IDENTIFIER_SIZE, policy_hex);
printf("%s\n", policy_hex);
} else {
printf("No policy set\n");
}
}
return 0;
}