forked from bitcoin/bitcoin
/
yescrypt.c
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/
yescrypt.c
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/*-
* Copyright 2014 Alexander Peslyak
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "yescrypt.h"
#include "sha256_c.h"
#include "yescrypt-best_c.h"
#define YESCRYPT_N 2048
#define YESCRYPT_R 8
#define YESCRYPT_P 1
#define YESCRYPT_T 0
#define YESCRYPT_FLAGS (YESCRYPT_RW | YESCRYPT_PWXFORM)
#ifdef __clang__
static int yescrypt_bitzeny(const uint8_t *passwd, size_t passwdlen,
const uint8_t *salt, size_t saltlen,
uint8_t *buf, size_t buflen)
{
yescrypt_shared_t shared;
yescrypt_local_t local;
int retval;
if (yescrypt_init_shared(&shared, NULL, 0,
0, 0, 0, YESCRYPT_SHARED_DEFAULTS, 0, NULL, 0))
return -1;
if (yescrypt_init_local(&local)) {
yescrypt_free_shared(&shared);
return -1;
}
retval = yescrypt_kdf(&shared, &local, passwd, passwdlen, salt, saltlen,
YESCRYPT_N, YESCRYPT_R, YESCRYPT_P, YESCRYPT_T,
YESCRYPT_FLAGS, buf, buflen);
if (yescrypt_free_local(&local)) {
yescrypt_free_shared(&shared);
return -1;
}
if (yescrypt_free_shared(&shared))
return -1;
return retval;
}
#else
static int yescrypt_bitzeny(const uint8_t *passwd, size_t passwdlen,
const uint8_t *salt, size_t saltlen,
uint8_t *buf, size_t buflen)
{
static __thread int initialized = 0;
static __thread yescrypt_shared_t shared;
static __thread yescrypt_local_t local;
int retval;
if (!initialized) {
/* "shared" could in fact be shared, but it's simpler to keep it private
* along with "local". It's dummy and tiny anyway. */
if (yescrypt_init_shared(&shared, NULL, 0,
0, 0, 0, YESCRYPT_SHARED_DEFAULTS, 0, NULL, 0))
return -1;
if (yescrypt_init_local(&local)) {
yescrypt_free_shared(&shared);
return -1;
}
initialized = 1;
}
retval = yescrypt_kdf(&shared, &local, passwd, passwdlen, salt, saltlen,
YESCRYPT_N, YESCRYPT_R, YESCRYPT_P, YESCRYPT_T,
YESCRYPT_FLAGS, buf, buflen);
#if 0
if (yescrypt_free_local(&local)) {
yescrypt_free_shared(&shared);
return -1;
}
if (yescrypt_free_shared(&shared))
return -1;
initialized = 0;
#endif
if (retval < 0) {
yescrypt_free_local(&local);
yescrypt_free_shared(&shared);
}
return retval;
}
#endif
void yescrypt_hash(const char *input, char *output)
{
yescrypt_bitzeny((const uint8_t *) input, 80,
(const uint8_t *) input, 80,
(uint8_t *) output, 32);
}