d93aa10bac
For consistency and safety, change the CMC and HSH functions to accept signed lengths and handle negative values as errors. Also, change the input data type to void * to not require casting in the caller.
123 lines
3 KiB
C
123 lines
3 KiB
C
/*
|
|
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;
|
|
|
|
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)
|
|
{
|
|
}
|