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trezor-firmware/rfc6979.h
2017-04-03 20:58:53 +02:00

41 lines
1.6 KiB
C

/**
* Copyright (c) 2013-2014 Tomas Dzetkulic
* Copyright (c) 2013-2014 Pavol Rusnak
* Copyright (c) 2015-2017 Jochen Hoenicke
*
* 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.
*/
#ifndef __RFC6979_H__
#define __RFC6979_H__
#include <stdint.h>
#include "bignum.h"
// rfc6979 pseudo random number generator state
typedef struct {
uint8_t v[32], k[32];
} rfc6979_state;
void init_rfc6979(const uint8_t *priv_key, const uint8_t *hash, rfc6979_state *rng);
void generate_rfc6979(uint8_t rnd[32], rfc6979_state *rng);
void generate_k_rfc6979(bignum256 *k, rfc6979_state *rng);
#endif