1 /* $NetBSD: fast.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */
2
3 /*
4 * Copyright (c) 2011 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "krb5_locl.h"
37
38
39 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_krb5_fast_cf2(krb5_context context,krb5_keyblock * key1,const char * pepper1,krb5_keyblock * key2,const char * pepper2,krb5_keyblock * armorkey,krb5_crypto * armor_crypto)40 _krb5_fast_cf2(krb5_context context,
41 krb5_keyblock *key1,
42 const char *pepper1,
43 krb5_keyblock *key2,
44 const char *pepper2,
45 krb5_keyblock *armorkey,
46 krb5_crypto *armor_crypto)
47 {
48 krb5_crypto crypto1, crypto2;
49 krb5_data pa1, pa2;
50 krb5_error_code ret;
51
52 ret = krb5_crypto_init(context, key1, 0, &crypto1);
53 if (ret)
54 return ret;
55
56 ret = krb5_crypto_init(context, key2, 0, &crypto2);
57 if (ret) {
58 krb5_crypto_destroy(context, crypto1);
59 return ret;
60 }
61
62 pa1.data = rk_UNCONST(pepper1);
63 pa1.length = strlen(pepper1);
64 pa2.data = rk_UNCONST(pepper2);
65 pa2.length = strlen(pepper2);
66
67 ret = krb5_crypto_fx_cf2(context, crypto1, crypto2, &pa1, &pa2,
68 key1->keytype, armorkey);
69 krb5_crypto_destroy(context, crypto1);
70 krb5_crypto_destroy(context, crypto2);
71 if (ret)
72 return ret;
73
74 if (armor_crypto) {
75 ret = krb5_crypto_init(context, armorkey, 0, armor_crypto);
76 if (ret)
77 krb5_free_keyblock_contents(context, armorkey);
78 }
79
80 return ret;
81 }
82
83 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_krb5_fast_armor_key(krb5_context context,krb5_keyblock * subkey,krb5_keyblock * sessionkey,krb5_keyblock * armorkey,krb5_crypto * armor_crypto)84 _krb5_fast_armor_key(krb5_context context,
85 krb5_keyblock *subkey,
86 krb5_keyblock *sessionkey,
87 krb5_keyblock *armorkey,
88 krb5_crypto *armor_crypto)
89 {
90 return _krb5_fast_cf2(context,
91 subkey,
92 "subkeyarmor",
93 sessionkey,
94 "ticketarmor",
95 armorkey,
96 armor_crypto);
97 }
98