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51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
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* Copyright (C) 2023 TU Dresden
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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 SHA-512 hash function implementation
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*
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* @author Mikolai Gütschow <mikolai.guetschow@tu-dresden.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/sha512.h"
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/* SHA-512 initialization. Begins a SHA-512 operation. */
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void sha512_init(sha512_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] = 0x6a09e667f3bcc908;
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ctx->state[1] = 0xbb67ae8584caa73b;
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ctx->state[2] = 0x3c6ef372fe94f82b;
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ctx->state[3] = 0xa54ff53a5f1d36f1;
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ctx->state[4] = 0x510e527fade682d1;
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ctx->state[5] = 0x9b05688c2b3e6c1f;
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ctx->state[6] = 0x1f83d9abfb41bd6b;
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ctx->state[7] = 0x5be0cd19137e2179;
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}
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void sha512(const void *data, size_t len, void *digest)
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{
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sha512_context_t c;
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assert(digest);
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sha512_init(&c);
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sha512_update(&c, data, len);
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sha512_final(&c, digest);
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}
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