| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, copy, |
| * modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifdef AVB_INSIDE_LIBAVB_H |
| #error "You can't include avb_sha.h in the public header libavb.h." |
| #endif |
| |
| #ifndef AVB_COMPILATION |
| #error "Never include this file, it may only be used from internal avb code." |
| #endif |
| |
| #ifndef AVB_SHA_H_ |
| #define AVB_SHA_H_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #include "avb_crypto.h" |
| #include "avb_sysdeps.h" |
| |
| /* Block size in bytes of a SHA-256 digest. */ |
| #define AVB_SHA256_BLOCK_SIZE 64 |
| |
| |
| /* Block size in bytes of a SHA-512 digest. */ |
| #define AVB_SHA512_BLOCK_SIZE 128 |
| |
| /* Data structure used for SHA-256. */ |
| typedef struct { |
| uint32_t h[8]; |
| uint32_t tot_len; |
| uint32_t len; |
| uint8_t block[2 * AVB_SHA256_BLOCK_SIZE]; |
| uint8_t buf[AVB_SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */ |
| } AvbSHA256Ctx; |
| |
| /* Data structure used for SHA-512. */ |
| typedef struct { |
| uint64_t h[8]; |
| uint32_t tot_len; |
| uint32_t len; |
| uint8_t block[2 * AVB_SHA512_BLOCK_SIZE]; |
| uint8_t buf[AVB_SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */ |
| } AvbSHA512Ctx; |
| |
| /* Initializes the SHA-256 context. */ |
| void avb_sha256_init(AvbSHA256Ctx* ctx); |
| |
| /* Updates the SHA-256 context with |len| bytes from |data|. */ |
| void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, uint32_t len); |
| |
| /* Returns the SHA-256 digest. */ |
| uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT; |
| |
| /* Initializes the SHA-512 context. */ |
| void avb_sha512_init(AvbSHA512Ctx* ctx); |
| |
| /* Updates the SHA-512 context with |len| bytes from |data|. */ |
| void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, uint32_t len); |
| |
| /* Returns the SHA-512 digest. */ |
| uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* AVB_SHA_H_ */ |