37 lines
829 B
C
37 lines
829 B
C
/* Copyright 2014 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 functions */
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#ifndef __CROS_EC_SHA1_H
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#define __CROS_EC_SHA1_H
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#include "common.h"
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#ifdef HOST_TOOLS_BUILD
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#include <string.h>
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#define DIV_ROUND_UP(x, y) (((x) + ((y) - 1)) / (y))
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#else
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#include "util.h"
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#endif
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#define SHA1_DIGEST_SIZE 20
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#define SHA1_BLOCK_SIZE 64
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/* SHA-1 context */
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struct sha1_ctx {
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uint32_t count;
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uint32_t state[5];
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union {
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uint8_t b[SHA1_BLOCK_SIZE];
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uint32_t w[DIV_ROUND_UP(SHA1_BLOCK_SIZE, sizeof(uint32_t))];
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} buf;
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};
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void sha1_init(struct sha1_ctx *ctx);
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void sha1_update(struct sha1_ctx *ctx, const uint8_t *data, uint32_t len);
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uint8_t *sha1_final(struct sha1_ctx *ctx);
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#endif /* __CROS_EC_SHA1_H */
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