| /* |
| * Copyright (C) 2015-2016 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. |
| */ |
| |
| #pragma once |
| |
| #include <stdint.h> |
| |
| #define DEBUG_MAC_VALUES 0 |
| |
| struct key { |
| uint8_t byte[32]; |
| }; |
| |
| struct mac { |
| uint8_t byte[16]; |
| }; |
| |
| struct iv { |
| uint8_t byte[16]; |
| }; |
| #define IV_INITIAL_ZERO_VALUE(iv) \ |
| { \ |
| { 0 } \ |
| } |
| |
| #if DEBUG_MAC_VALUES |
| #define UINT8_16_PRINTF_STR \ |
| "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" |
| #define UINT8_16_PRINTF_ARGS(var) \ |
| var[0], var[1], var[2], var[3], var[4], var[5], var[6], var[7], var[8], \ |
| var[9], var[10], var[11], var[12], var[13], var[14], var[15] |
| #else |
| #define UINT8_16_PRINTF_STR "%c" |
| #define UINT8_16_PRINTF_ARGS(var) '*' |
| #endif |
| |
| #define MAC_PRINTF_STR UINT8_16_PRINTF_STR |
| #define MAC_PRINTF_ARGS(var) UINT8_16_PRINTF_ARGS((var)->byte) |
| #define IV_PRINTF_STR UINT8_16_PRINTF_STR |
| #define IV_PRINTF_ARGS(var) UINT8_16_PRINTF_ARGS((var)->byte) |
| |
| uint64_t str_hash(const char* str); |
| |
| int calculate_mac(const struct key* key, |
| struct mac* mac, |
| const void* data, |
| size_t data_size); |
| |
| int generate_iv(struct iv* iv_out); |
| |
| int encrypt(const struct key* key, |
| void* data_in_out, |
| size_t data_size, |
| const struct iv* iv_in); |
| |
| int decrypt(const struct key* key, |
| void* data_in_out, |
| size_t data_size, |
| const struct iv* iv_in); |
| |
| void crypt_init(void); |
| |
| void crypt_shutdown(void); |