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907db7f @bwalex separate out pbkdf2 stuff
authored
1 /*
2 * Copyright (c) 2011 Alex Hornung <alex@alexhornung.com>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <errno.h>
9d4e451 @bwalex Work around broken gcrypt includes
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31 /*
32 * Yey for gcrypt and its broken includes...
33 * see http://lists.gnupg.org/pipermail/gcrypt-devel/2011-July/001830.html
34 * and http://seclists.org/wireshark/2011/Jul/208
35 * for more details...
36 */
37 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
907db7f @bwalex separate out pbkdf2 stuff
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38 #include <gcrypt.h>
9d4e451 @bwalex Work around broken gcrypt includes
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39 #pragma GCC diagnostic warning "-Wdeprecated-declarations"
907db7f @bwalex separate out pbkdf2 stuff
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40
41 #include "tcplay.h"
42
98e82f5 @bwalex move get_gcrypt_hash_id to pbkdf2-gcrypt
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43 static
44 int
45 get_gcrypt_hash_id(struct pbkdf_prf_algo *hash)
46 {
47 if (strcmp(hash->name, "RIPEMD160") == 0)
48 return GCRY_MD_RMD160;
49 else if (strcmp(hash->name, "SHA512") == 0)
50 return GCRY_MD_SHA512;
51 else if (strcmp(hash->name, "whirlpool") == 0)
52 return GCRY_MD_WHIRLPOOL;
53 else
54 return -1;
55 }
56
907db7f @bwalex separate out pbkdf2 stuff
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57 int
58 pbkdf2(struct pbkdf_prf_algo *hash, const char *pass, int passlen,
59 const unsigned char *salt, int saltlen,
60 int keylen, unsigned char *out)
61 {
62 gpg_error_t err;
63
64 err = gcry_kdf_derive(pass, passlen, GCRY_KDF_PBKDF2,
65 get_gcrypt_hash_id(hash),
66 salt, saltlen, hash->iteration_count, keylen, out);
67
68 if (err) {
69 tc_log(1, "Error in PBKDF2\n");
70 return EINVAL;
71 }
72
73 return 0;
74 }
75
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