109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
/*
|
|
chronyd/chronyc - Programs for keeping computer clocks accurate.
|
|
|
|
**********************************************************************
|
|
* Copyright (C) Miroslav Lichvar 2012
|
|
*
|
|
* 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 NSSLOWHASH API of the NSS library.
|
|
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <nss.h>
|
|
#include <hasht.h>
|
|
#include <nsslowhash.h>
|
|
|
|
#include "hash.h"
|
|
#include "util.h"
|
|
|
|
static NSSLOWInitContext *ictx;
|
|
|
|
struct hash {
|
|
HASH_HashType type;
|
|
HSH_Algorithm algorithm;
|
|
NSSLOWHASHContext *context;
|
|
};
|
|
|
|
static struct hash hashes[] = {
|
|
{ HASH_AlgMD5, HSH_MD5, NULL },
|
|
{ HASH_AlgSHA1, HSH_SHA1, NULL },
|
|
{ HASH_AlgSHA256, HSH_SHA256, NULL },
|
|
{ HASH_AlgSHA384, HSH_SHA384, NULL },
|
|
{ HASH_AlgSHA512, HSH_SHA512, NULL },
|
|
{ 0, 0, NULL }
|
|
};
|
|
|
|
int
|
|
HSH_GetHashId(HSH_Algorithm algorithm)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; hashes[i].algorithm != 0; i++) {
|
|
if (hashes[i].algorithm == algorithm)
|
|
break;
|
|
}
|
|
|
|
if (hashes[i].algorithm == 0)
|
|
return -1; /* not found */
|
|
|
|
if (!ictx && !(ictx = NSSLOW_Init()))
|
|
return -1; /* couldn't init NSS */
|
|
|
|
if (!hashes[i].context &&
|
|
!(hashes[i].context = NSSLOWHASH_NewContext(ictx, hashes[i].type)))
|
|
return -1; /* couldn't init hash */
|
|
|
|
return i;
|
|
}
|
|
|
|
unsigned int
|
|
HSH_Hash(int id, const unsigned char *in1, unsigned int in1_len,
|
|
const unsigned char *in2, unsigned int in2_len,
|
|
unsigned char *out, unsigned int out_len)
|
|
{
|
|
unsigned char buf[MAX_HASH_LENGTH];
|
|
unsigned int ret = 0;
|
|
|
|
NSSLOWHASH_Begin(hashes[id].context);
|
|
NSSLOWHASH_Update(hashes[id].context, in1, in1_len);
|
|
if (in2)
|
|
NSSLOWHASH_Update(hashes[id].context, in2, in2_len);
|
|
NSSLOWHASH_End(hashes[id].context, buf, &ret, sizeof (buf));
|
|
|
|
ret = MIN(ret, out_len);
|
|
memcpy(out, buf, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
HSH_Finalise(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; hashes[i].algorithm != 0; i++) {
|
|
if (hashes[i].context)
|
|
NSSLOWHASH_Destroy(hashes[i].context);
|
|
}
|
|
|
|
if (ictx)
|
|
NSSLOW_Shutdown(ictx);
|
|
}
|