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51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* Copyright (C) 2020 HAW Hamburg
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys_hashes
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*
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* @{
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* @file
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* @brief SHA224 hash function implementation
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*
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* @author Peter Kietzmann <peter.kietzmann@haw-hamburg.de>
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*
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* @}
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*/
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#include <assert.h>
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#include "hashes/sha224.h"
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/* SHA-224 initialization. Begins a SHA-224 operation. */
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void sha224_init(sha224_context_t *ctx)
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{
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/* Zero bits processed so far */
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ctx->count[0] = ctx->count[1] = 0;
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/* Magic initialization constants */
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ctx->state[0] = 0xC1059ED8;
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ctx->state[1] = 0x367CD507;
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ctx->state[2] = 0x3070DD17;
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ctx->state[3] = 0xF70E5939;
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ctx->state[4] = 0xFFC00B31;
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ctx->state[5] = 0x68581511;
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ctx->state[6] = 0x64F98FA7;
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ctx->state[7] = 0xBEFA4FA4;
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}
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void sha224(const void *data, size_t len, void *digest)
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{
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sha224_context_t c;
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assert(digest);
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sha224_init(&c);
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sha224_update(&c, data, len);
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sha224_final(&c, digest);
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}
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