2 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
34 #include "krb5_locl.h"
36 RCSID("$Id: keyblock.c 15167 2005-05-18 04:21:57Z lha $");
38 void KRB5_LIB_FUNCTION
39 krb5_keyblock_zero(krb5_keyblock *keyblock)
41 keyblock->keytype = 0;
42 krb5_data_zero(&keyblock->keyvalue);
45 void KRB5_LIB_FUNCTION
46 krb5_free_keyblock_contents(krb5_context context,
47 krb5_keyblock *keyblock)
50 if (keyblock->keyvalue.data != NULL)
51 memset(keyblock->keyvalue.data, 0, keyblock->keyvalue.length);
52 krb5_data_free (&keyblock->keyvalue);
53 keyblock->keytype = ENCTYPE_NULL;
57 void KRB5_LIB_FUNCTION
58 krb5_free_keyblock(krb5_context context,
59 krb5_keyblock *keyblock)
62 krb5_free_keyblock_contents(context, keyblock);
67 krb5_error_code KRB5_LIB_FUNCTION
68 krb5_copy_keyblock_contents (krb5_context context,
69 const krb5_keyblock *inblock,
72 return copy_EncryptionKey(inblock, to);
75 krb5_error_code KRB5_LIB_FUNCTION
76 krb5_copy_keyblock (krb5_context context,
77 const krb5_keyblock *inblock,
82 k = malloc (sizeof(*k));
84 krb5_set_error_string(context, "malloc: out of memory");
88 return krb5_copy_keyblock_contents (context, inblock, k);
92 krb5_keyblock_get_enctype(const krb5_keyblock *block)
94 return block->keytype;
98 * Fill in `key' with key data of type `enctype' from `data' of length
99 * `size'. Key should be freed using krb5_free_keyblock_contents.
102 krb5_error_code KRB5_LIB_FUNCTION
103 krb5_keyblock_init(krb5_context context,
112 memset(key, 0, sizeof(*key));
114 ret = krb5_enctype_keysize(context, type, &len);
119 krb5_set_error_string(context, "Encryption key %d is %lu bytes "
120 "long, %lu was passed in",
121 type, (unsigned long)len, (unsigned long)size);
122 return KRB5_PROG_ETYPE_NOSUPP;
124 ret = krb5_data_copy(&key->keyvalue, data, len);
126 krb5_set_error_string(context, "malloc failed: %lu",