xref: /freebsd/crypto/heimdal/lib/krb5/generate_subkey.c (revision adb0ddaeac0a71a08d6af3a711387b59efcc94b6)
1b528cefcSMark Murray /*
2adb0ddaeSAssar Westerlund  * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan
3b528cefcSMark Murray  * (Royal Institute of Technology, Stockholm, Sweden).
4b528cefcSMark Murray  * All rights reserved.
5b528cefcSMark Murray  *
6b528cefcSMark Murray  * Redistribution and use in source and binary forms, with or without
7b528cefcSMark Murray  * modification, are permitted provided that the following conditions
8b528cefcSMark Murray  * are met:
9b528cefcSMark Murray  *
10b528cefcSMark Murray  * 1. Redistributions of source code must retain the above copyright
11b528cefcSMark Murray  *    notice, this list of conditions and the following disclaimer.
12b528cefcSMark Murray  *
13b528cefcSMark Murray  * 2. Redistributions in binary form must reproduce the above copyright
14b528cefcSMark Murray  *    notice, this list of conditions and the following disclaimer in the
15b528cefcSMark Murray  *    documentation and/or other materials provided with the distribution.
16b528cefcSMark Murray  *
17b528cefcSMark Murray  * 3. Neither the name of the Institute nor the names of its contributors
18b528cefcSMark Murray  *    may be used to endorse or promote products derived from this software
19b528cefcSMark Murray  *    without specific prior written permission.
20b528cefcSMark Murray  *
21b528cefcSMark Murray  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22b528cefcSMark Murray  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23b528cefcSMark Murray  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24b528cefcSMark Murray  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25b528cefcSMark Murray  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26b528cefcSMark Murray  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27b528cefcSMark Murray  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28b528cefcSMark Murray  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29b528cefcSMark Murray  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30b528cefcSMark Murray  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31b528cefcSMark Murray  * SUCH DAMAGE.
32b528cefcSMark Murray  */
33b528cefcSMark Murray 
34b528cefcSMark Murray #include <krb5_locl.h>
35b528cefcSMark Murray 
36adb0ddaeSAssar Westerlund RCSID("$Id: generate_subkey.c,v 1.8 2001/05/14 06:14:46 assar Exp $");
37b528cefcSMark Murray 
38b528cefcSMark Murray krb5_error_code
39b528cefcSMark Murray krb5_generate_subkey(krb5_context context,
40b528cefcSMark Murray 		     const krb5_keyblock *key,
41b528cefcSMark Murray 		     krb5_keyblock **subkey)
42b528cefcSMark Murray {
43b528cefcSMark Murray     krb5_error_code ret;
44b528cefcSMark Murray 
45b528cefcSMark Murray     ALLOC(*subkey, 1);
46adb0ddaeSAssar Westerlund     if (*subkey == NULL) {
47adb0ddaeSAssar Westerlund 	krb5_set_error_string(context, "malloc: out of memory");
48b528cefcSMark Murray 	return ENOMEM;
49adb0ddaeSAssar Westerlund     }
50b528cefcSMark Murray     ret = krb5_generate_random_keyblock(context, key->keytype, *subkey);
51b528cefcSMark Murray     if(ret)
52b528cefcSMark Murray 	free(*subkey);
53b528cefcSMark Murray     return ret;
54b528cefcSMark Murray }
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