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/*
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Miroslav Lichvar 2012, 2018
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
=======================================================================
Routines implementing crypto hashing using tomcrypt library.
*/
#include <tomcrypt.h>
#include "config.h"
#include "hash.h"
#include "util.h"
struct hash {
HSH_Algorithm algorithm;
const char *int_name;
const struct ltc_hash_descriptor *desc;
};
static const struct hash hashes[] = {
{ HSH_MD5, "md5", &md5_desc },
#ifdef LTC_SHA1
{ HSH_SHA1, "sha1", &sha1_desc },
#endif
#ifdef LTC_SHA256
{ HSH_SHA256, "sha256", &sha256_desc },
#endif
#ifdef LTC_SHA384
{ HSH_SHA384, "sha384", &sha384_desc },
#endif
#ifdef LTC_SHA512
{ HSH_SHA512, "sha512", &sha512_desc },
#endif
#ifdef LTC_SHA3
{ HSH_SHA3_224, "sha3-224", &sha3_224_desc },
{ HSH_SHA3_256, "sha3-256", &sha3_256_desc },
{ HSH_SHA3_384, "sha3-384", &sha3_384_desc },
{ HSH_SHA3_512, "sha3-512", &sha3_512_desc },
#endif
#ifdef LTC_TIGER
{ HSH_TIGER, "tiger", &tiger_desc },
#endif
#ifdef LTC_WHIRLPOOL
{ HSH_WHIRLPOOL, "whirlpool", &whirlpool_desc },
#endif
{ 0, NULL, NULL }
};
int
HSH_GetHashId(HSH_Algorithm algorithm)
{
int i, h;
if (algorithm == HSH_MD5_NONCRYPTO)
algorithm = HSH_MD5;
for (i = 0; hashes[i].algorithm != 0; i++) {
if (hashes[i].algorithm == algorithm)
break;
}
if (hashes[i].algorithm == 0)
return -1; /* not found */
h = find_hash(hashes[i].int_name);
if (h >= 0)
return h; /* already registered */
/* register and try again */
register_hash(hashes[i].desc);
return find_hash(hashes[i].int_name);
}
int
HSH_Hash(int id, const void *in1, int in1_len, const void *in2, int in2_len,
unsigned char *out, int out_len)
{
unsigned char buf[MAX_HASH_LENGTH];
unsigned long len;
int r;
if (in1_len < 0 || in2_len < 0 || out_len < 0)
return 0;
len = sizeof (buf);
if (in2)
r = hash_memory_multi(id, buf, &len,
in1, (unsigned long)in1_len,
in2, (unsigned long)in2_len, NULL, 0);
else
r = hash_memory(id, in1, in1_len, buf, &len);
if (r != CRYPT_OK)
return 0;
len = MIN(len, out_len);
memcpy(out, buf, len);
return len;
}
void
HSH_Finalise(void)
{
}
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