/* Groestl hash from https://github.com/Groestlcoin/vanitygen * Trezor adaptation by Yura Pakhuchiy <pakhuchiy@gmail.com>. */ /** * Groestl interface. This code implements Groestl with the recommended * parameters for SHA-3, with outputs of 224, 256, 384 and 512 bits. * * ==========================(LICENSE BEGIN)============================ * * Copyright (c) 2007-2010 Projet RNRT SAPHIR * * 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, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * ===========================(LICENSE END)============================= * * @file sph_groestl.h * @author Thomas Pornin <thomas.pornin@cryptolog.com> */ #ifndef GROESTL_H__ #define GROESTL_H__ #include <stddef.h> /** * This structure is a context for Groestl-384 and Groestl-512 computations: * it contains the intermediate values and some data from the last * entered block. Once a Groestl computation has been performed, the * context can be reused for another computation. * * The contents of this structure are private. A running Groestl * computation can be cloned by copying the context (e.g. with a simple * <code>memcpy()</code>). */ typedef struct { unsigned char buf[128]; /* first field, for alignment */ size_t ptr; union { uint64_t wide[16]; uint32_t narrow[32]; } state; uint64_t count; } sph_groestl_big_context; typedef sph_groestl_big_context GROESTL512_CTX; /** * Initialize a Groestl-512 context. This process performs no memory allocation. * * @param cc the Groestl-512 context (pointer to a * <code>GROESTL512_CTX</code>) */ void groestl512_Init(void *cc); /** * Process some data bytes. It is acceptable that <code>len</code> is zero * (in which case this function does nothing). * * @param cc the Groestl-512 context * @param data the input data * @param len the input data length (in bytes) */ void groestl512_Update(void *cc, const void *data, size_t len); /** * Terminate the current Groestl-512 computation and output the result into * the provided buffer. The destination buffer must be wide enough to * accomodate the result (64 bytes). The context is automatically * reinitialized. * * @param cc the Groestl-512 context * @param dst the destination buffer */ void groestl512_Final(void *cc, void *dst); /* Calculate double Groestl-512 hash and truncate it to 256-bits. */ void groestl512_DoubleTrunc(void *cc, void *dst); #endif