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85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* SHA-1, 256 and 512 functions. */
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#ifndef VBOOT_REFERENCE_SHA_H_
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#define VBOOT_REFERENCE_SHA_H_
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#include <inttypes.h>
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#include <string.h>
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#define SHA1_DIGEST_SIZE 20
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#define SHA1_BLOCK_SIZE 64
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#define SHA256_DIGEST_SIZE 32
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#define SHA256_BLOCK_SIZE 64
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#define SHA512_DIGEST_SIZE 64
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#define SHA512_BLOCK_SIZE 128
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typedef struct SHA1_CTX {
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uint64_t count;
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uint32_t state[5];
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#if defined(HAVE_ENDIAN_H) && defined(HAVE_LITTLE_ENDIAN)
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union {
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uint8_t b[64];
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uint32_t w[16];
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} buf;
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#else
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uint8_t buf[64];
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#endif
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} SHA1_CTX;
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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 * SHA256_BLOCK_SIZE];
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uint8_t buf[SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */
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} SHA256_CTX;
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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 * SHA512_BLOCK_SIZE];
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uint8_t buf[SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */
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} SHA512_CTX;
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void SHA1_init(SHA1_CTX* ctx);
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void SHA1_update(SHA1_CTX* ctx, const uint8_t* data, int len);
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uint8_t* SHA1_final(SHA1_CTX* ctx);
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void SHA256_init(SHA256_CTX* ctx);
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void SHA256_update(SHA256_CTX* ctx, const uint8_t* data, int len);
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uint8_t* SHA256_final(SHA256_CTX* ctx);
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void SHA512_init(SHA512_CTX* ctx);
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void SHA512_update(SHA512_CTX* ctx, const uint8_t* data, int len);
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uint8_t* SHA512_final(SHA512_CTX* ctx);
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/* Convenience function for SHA-1. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA1_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA1(const uint8_t* data, int len, uint8_t* digest);
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/* Convenience function for SHA-256. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA256_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA256(const uint8_t* data, int len, uint8_t* digest);
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/* Convenience function for SHA-512. Computes hash on [data] of length [len].
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* and stores it into [digest]. [digest] should be pre-allocated to
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* SHA512_DIGEST_SIZE bytes.
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*/
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uint8_t* SHA512(const uint8_t* data, int len, uint8_t* digest);
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#endif /* VBOOT_REFERENCE_SHA_H_ */
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