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Diffstat (limited to 'include/ouroboros/sha3.h')
| -rw-r--r-- | include/ouroboros/sha3.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/include/ouroboros/sha3.h b/include/ouroboros/sha3.h new file mode 100644 index 00000000..17888870 --- /dev/null +++ b/include/ouroboros/sha3.h @@ -0,0 +1,86 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * SHA3 algorithm + * + * Dimitri Staessens <dimitri.staessens@ugent.be> + * Sander Vrijders <sander.vrijders@ugent.be> + * + * This implementation is adapted and redistributed from the RHASH + * project implementation of the sha3 algorithm + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * version 2.1 as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301 USA + * + * -- original license + * + * sha3.c - an implementation of Secure Hash Algorithm 3 (Keccak). + * based on the + * The Keccak SHA-3 submission. Submission to NIST (Round 3), 2011 + * by Guido Bertoni, Joan Daemen, Michaël Peeters and Gilles Van Assche + * + * Copyright: 2013 Aleksey Kravchenko <rhash.admin@gmail.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. Use this program at your own risk! + */ + +#ifndef OUROBOROS_SHA3_H +#define OUROBOROS_SHA3_H + +#include <unistd.h> +#include <stdint.h> + +#define SHA3_224_HASH_LEN 28 +#define SHA3_256_HASH_LEN 32 +#define SHA3_384_HASH_LEN 48 +#define SHA3_512_HASH_LEN 64 +#define SHA3_MAX_PERMUTATION_SIZE 25 +#define SHA3_MAX_RATE_IN_QWORDS 24 + +struct sha3_ctx { + /* 1600 bits algorithm hashing state */ + uint64_t hash[SHA3_MAX_PERMUTATION_SIZE]; + /* 1536-bit buffer for leftovers */ + uint64_t message[SHA3_MAX_RATE_IN_QWORDS]; + /* count of bytes in the message[] buffer */ + unsigned rest; + /* size of a message block processed at once */ + unsigned block_size; +}; + +void rhash_sha3_224_init(struct sha3_ctx * ctx); + +void rhash_sha3_256_init(struct sha3_ctx * ctx); + +void rhash_sha3_384_init(struct sha3_ctx * ctx); + +void rhash_sha3_512_init(struct sha3_ctx * ctx); + +void rhash_sha3_update(struct sha3_ctx * ctx, + const void * msg, + size_t size); + +void rhash_sha3_final(struct sha3_ctx * ctx, + uint8_t * res); + +#endif /* OUROBOROS_SHA3_H */ |