xref: /freebsd/crypto/heimdal/lib/krb5/keyblock.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*
2  * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the Institute nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "krb5_locl.h"
35 
36 RCSID("$Id: keyblock.c,v 1.12 2001/05/14 06:14:48 assar Exp $");
37 
38 void
39 krb5_free_keyblock_contents(krb5_context context,
40 			    krb5_keyblock *keyblock)
41 {
42     if(keyblock) {
43 	if (keyblock->keyvalue.data != NULL)
44 	    memset(keyblock->keyvalue.data, 0, keyblock->keyvalue.length);
45 	krb5_data_free (&keyblock->keyvalue);
46     }
47 }
48 
49 void
50 krb5_free_keyblock(krb5_context context,
51 		   krb5_keyblock *keyblock)
52 {
53     if(keyblock){
54 	krb5_free_keyblock_contents(context, keyblock);
55 	free(keyblock);
56     }
57 }
58 
59 krb5_error_code
60 krb5_copy_keyblock_contents (krb5_context context,
61 			     const krb5_keyblock *inblock,
62 			     krb5_keyblock *to)
63 {
64     return copy_EncryptionKey(inblock, to);
65 }
66 
67 krb5_error_code
68 krb5_copy_keyblock (krb5_context context,
69 		    const krb5_keyblock *inblock,
70 		    krb5_keyblock **to)
71 {
72     krb5_keyblock *k;
73 
74     k = malloc (sizeof(*k));
75     if (k == NULL) {
76 	krb5_set_error_string(context, "malloc: out of memory");
77 	return ENOMEM;
78     }
79     *to = k;
80     return krb5_copy_keyblock_contents (context, inblock, k);
81 }
82