82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
/* $OpenBSD: sha3_internal.h,v 1.15 2023/04/25 19:32:19 tb Exp $ */
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Markku-Juhani O. Saarinen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#ifndef HEADER_SHA3_INTERNAL_H
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#define HEADER_SHA3_INTERNAL_H
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#define KECCAK_BIT_WIDTH 1600
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#define KECCAK_BYTE_WIDTH (KECCAK_BIT_WIDTH / 8)
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#define SHA3_224_BIT_LENGTH 224
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#define SHA3_224_BITRATE (2 * SHA3_224_BIT_LENGTH)
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#define SHA3_224_CAPACITY (KECCAK_BIT_WIDTH - SHA3_224_BITRATE)
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#define SHA3_224_BLOCK_SIZE (SHA3_224_CAPACITY / 8)
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#define SHA3_224_DIGEST_LENGTH (SHA3_224_BIT_LENGTH / 8)
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#define SHA3_256_BIT_LENGTH 256
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#define SHA3_256_BITRATE (2 * SHA3_256_BIT_LENGTH)
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#define SHA3_256_CAPACITY (KECCAK_BIT_WIDTH - SHA3_256_BITRATE)
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#define SHA3_256_BLOCK_SIZE (SHA3_256_CAPACITY / 8)
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#define SHA3_256_DIGEST_LENGTH (SHA3_256_BIT_LENGTH / 8)
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#define SHA3_384_BIT_LENGTH 384
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#define SHA3_384_BITRATE (2 * SHA3_384_BIT_LENGTH)
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#define SHA3_384_CAPACITY (KECCAK_BIT_WIDTH - SHA3_384_BITRATE)
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#define SHA3_384_BLOCK_SIZE (SHA3_384_CAPACITY / 8)
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#define SHA3_384_DIGEST_LENGTH (SHA3_384_BIT_LENGTH / 8)
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#define SHA3_512_BIT_LENGTH 512
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#define SHA3_512_BITRATE (2 * SHA3_512_BIT_LENGTH)
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#define SHA3_512_CAPACITY (KECCAK_BIT_WIDTH - SHA3_512_BITRATE)
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#define SHA3_512_BLOCK_SIZE (SHA3_512_CAPACITY / 8)
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#define SHA3_512_DIGEST_LENGTH (SHA3_512_BIT_LENGTH / 8)
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typedef struct sha3_ctx_st {
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union {
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uint8_t b[200]; /* State as 8 bit bytes. */
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uint64_t q[25]; /* State as 64 bit words. */
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} state;
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size_t pt;
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size_t rsize;
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size_t mdlen;
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} sha3_ctx;
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int sha3_init(sha3_ctx *c, int mdlen);
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int sha3_update(sha3_ctx *c, const void *data, size_t len);
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int sha3_final(void *md, sha3_ctx *c);
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/* SHAKE128 and SHAKE256 extensible-output functions. */
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#define shake128_init(c) sha3_init(c, 16)
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#define shake256_init(c) sha3_init(c, 32)
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#define shake_update sha3_update
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void shake_xof(sha3_ctx *c);
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void shake_out(sha3_ctx *c, void *out, size_t len);
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#endif
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