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71 lines
1.8 KiB
71 lines
1.8 KiB
/* SPDX-License-Identifier: MIT */ |
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/* |
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* Copyright (C) 2016 The Android Open Source Project |
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*/ |
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#ifdef AVB_INSIDE_LIBAVB_H |
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#error "You can't include avb_sha.h in the public header libavb.h." |
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#endif |
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#ifndef AVB_COMPILATION |
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#error "Never include this file, it may only be used from internal avb code." |
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#endif |
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#ifndef AVB_SHA_H_ |
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#define AVB_SHA_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "avb_crypto.h" |
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#include "avb_sysdeps.h" |
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/* Block size in bytes of a SHA-256 digest. */ |
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#define AVB_SHA256_BLOCK_SIZE 64 |
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/* Block size in bytes of a SHA-512 digest. */ |
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#define AVB_SHA512_BLOCK_SIZE 128 |
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/* Data structure used for SHA-256. */ |
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typedef struct { |
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uint32_t h[8]; |
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uint32_t tot_len; |
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uint32_t len; |
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uint8_t block[2 * AVB_SHA256_BLOCK_SIZE]; |
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uint8_t buf[AVB_SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */ |
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} AvbSHA256Ctx; |
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/* Data structure used for SHA-512. */ |
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typedef struct { |
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uint64_t h[8]; |
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uint32_t tot_len; |
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uint32_t len; |
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uint8_t block[2 * AVB_SHA512_BLOCK_SIZE]; |
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uint8_t buf[AVB_SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */ |
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} AvbSHA512Ctx; |
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/* Initializes the SHA-256 context. */ |
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void avb_sha256_init(AvbSHA256Ctx* ctx); |
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/* Updates the SHA-256 context with |len| bytes from |data|. */ |
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void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, uint32_t len); |
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/* Returns the SHA-256 digest. */ |
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uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT; |
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/* Initializes the SHA-512 context. */ |
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void avb_sha512_init(AvbSHA512Ctx* ctx); |
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/* Updates the SHA-512 context with |len| bytes from |data|. */ |
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void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, uint32_t len); |
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/* Returns the SHA-512 digest. */ |
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uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT; |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* AVB_SHA_H_ */
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