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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/* 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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