1
2/*
3 * Copyright (c) 2001-2008 Apple Inc. All rights reserved.
4 *
5 * @APPLE_LICENSE_HEADER_START@
6 *
7 * This file contains Original Code and/or Modifications of Original Code
8 * as defined in and that are subject to the Apple Public Source License
9 * Version 2.0 (the 'License'). You may not use this file except in
10 * compliance with the License. Please obtain a copy of the License at
11 * http://www.opensource.apple.com/apsl/ and read it before using this
12 * file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
19 * Please see the License for the specific language governing rights and
20 * limitations under the License.
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24
25/*
26 * Modification History
27 *
28 * December 10, 2001	Dieter Siegmund (dieter@apple.com)
29 * - created
30 */
31
32/*
33 * Function: CHAP_md5_hash
34 * Purpose:
35 *   Compute the CHAP MD5 hash using the method described in
36 *   RFC 1994.
37 */
38
39#include <stdio.h>
40#include <stdlib.h>
41#include <unistd.h>
42#include <string.h>
43#include <CommonCrypto/CommonDigest.h>
44#include "chap.h"
45
46void
47chap_md5(uint8_t identifier, const uint8_t * password, int password_len,
48	 const uint8_t * challenge, int challenge_len,
49	 uint8_t * hash)
50{
51    CC_MD5_CTX			ctx;
52
53    /* MD5 hash over the identifier + password + challenge */
54    CC_MD5_Init(&ctx);
55    CC_MD5_Update(&ctx, &identifier, sizeof(identifier));
56    CC_MD5_Update(&ctx, password, password_len);
57    CC_MD5_Update(&ctx, challenge, challenge_len);
58    CC_MD5_Final(hash, &ctx);
59    return;
60}
61