60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2000 Markus Friedl. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by Markus Friedl.
|
||
|
|
* 4. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "includes.h"
|
||
|
|
RCSID("$Id: hmac.c,v 1.2 2000/04/12 09:39:10 markus Exp $");
|
||
|
|
|
||
|
|
#include "xmalloc.h"
|
||
|
|
#include "ssh.h"
|
||
|
|
#include "getput.h"
|
||
|
|
|
||
|
|
#include <openssl/hmac.h>
|
||
|
|
|
||
|
|
unsigned char *
|
||
|
|
hmac(
|
||
|
|
EVP_MD *evp_md,
|
||
|
|
unsigned int seqno,
|
||
|
|
unsigned char *data, int datalen,
|
||
|
|
unsigned char *key, int keylen)
|
||
|
|
{
|
||
|
|
HMAC_CTX c;
|
||
|
|
static unsigned char m[EVP_MAX_MD_SIZE];
|
||
|
|
unsigned char b[4];
|
||
|
|
|
||
|
|
if (key == NULL)
|
||
|
|
fatal("hmac: no key");
|
||
|
|
HMAC_Init(&c, key, keylen, evp_md);
|
||
|
|
PUT_32BIT(b, seqno);
|
||
|
|
HMAC_Update(&c, b, sizeof b);
|
||
|
|
HMAC_Update(&c, data, datalen);
|
||
|
|
HMAC_Final(&c, m, NULL);
|
||
|
|
HMAC_cleanup(&c);
|
||
|
|
return(m);
|
||
|
|
}
|