/* * 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, Michaƫl 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_LIB_SHA3_H #define OUROBOROS_LIB_SHA3_H #include <unistd.h> #include <stdint.h> #define sha3_224_hash_size 28 #define sha3_256_hash_size 32 #define sha3_384_hash_size 48 #define sha3_512_hash_size 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 uint8_t * msg, size_t size); void rhash_sha3_final(struct sha3_ctx * ctx, uint8_t * res); #endif /* OUROBOROS_LIB_SHA3_H */