summaryrefslogtreecommitdiff
path: root/hmac.c
diff options
context:
space:
mode:
Diffstat (limited to 'hmac.c')
-rw-r--r--hmac.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/hmac.c b/hmac.c
new file mode 100644
index 000000000..45037ef87
--- /dev/null
+++ b/hmac.c
@@ -0,0 +1,64 @@
1/*
2 * Copyright (c) 2000 Markus Friedl. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. All advertising materials mentioning features or use of this software
13 * must display the following acknowledgement:
14 * This product includes software developed by Markus Friedl.
15 * 4. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "includes.h"
31RCSID("$Id: hmac.c,v 1.1 2000/04/03 20:06:15 markus Exp $");
32
33#include "xmalloc.h"
34#include "ssh.h"
35#include "getput.h"
36
37#if HAVE_OPENSSL
38# include <openssl/hmac.h>
39#endif /* HAVE_OPENSSL */
40#if HAVE_SSL
41# include <ssl/hmac.h>
42#endif /* HAVE_SSL */
43
44unsigned char *
45hmac(
46 EVP_MD *evp_md,
47 unsigned int seqno,
48 unsigned char *data, int datalen,
49 unsigned char *key, int keylen)
50{
51 HMAC_CTX c;
52 static unsigned char m[EVP_MAX_MD_SIZE];
53 unsigned char b[4];
54
55 if (key == NULL)
56 fatal("hmac: no key");
57 HMAC_Init(&c, key, keylen, evp_md);
58 PUT_32BIT(b, seqno);
59 HMAC_Update(&c, b, sizeof b);
60 HMAC_Update(&c, data, datalen);
61 HMAC_Final(&c, m, NULL);
62 HMAC_cleanup(&c);
63 return(m);
64}