crypto/heimdal-0.6.3/lib/krb5/keyblock.c

   1 /*
   2  * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
   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 }