33 lines
868 B
C
33 lines
868 B
C
/* Copyright 2012 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-256 functions */
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#ifndef __CROS_EC_SHA256_H
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#define __CROS_EC_SHA256_H
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#include "common.h"
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#define SHA256_DIGEST_SIZE 32
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#define SHA256_BLOCK_SIZE 64
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/* SHA256 context */
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struct sha256_ctx {
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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 to store the final digest. */
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};
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void SHA256_init(struct sha256_ctx *ctx);
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void SHA256_update(struct sha256_ctx *ctx, const uint8_t *data, uint32_t len);
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uint8_t *SHA256_final(struct sha256_ctx *ctx);
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void hmac_SHA256(uint8_t *output, const uint8_t *key, const int key_len,
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const uint8_t *message, const int message_len);
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#endif /* __CROS_EC_SHA256_H */
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