6937d41a02
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23815 ec53bebd-3082-4978-b11e-865c3cabbd6b
134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/*
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* Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id$");
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void KRB5_LIB_FUNCTION
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krb5_keyblock_zero(krb5_keyblock *keyblock)
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{
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keyblock->keytype = 0;
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krb5_data_zero(&keyblock->keyvalue);
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}
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void KRB5_LIB_FUNCTION
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krb5_free_keyblock_contents(krb5_context context,
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krb5_keyblock *keyblock)
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{
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if(keyblock) {
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if (keyblock->keyvalue.data != NULL)
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memset(keyblock->keyvalue.data, 0, keyblock->keyvalue.length);
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krb5_data_free (&keyblock->keyvalue);
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keyblock->keytype = ENCTYPE_NULL;
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}
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}
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void KRB5_LIB_FUNCTION
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krb5_free_keyblock(krb5_context context,
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krb5_keyblock *keyblock)
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{
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if(keyblock){
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krb5_free_keyblock_contents(context, keyblock);
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free(keyblock);
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}
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_keyblock_contents (krb5_context context,
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const krb5_keyblock *inblock,
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krb5_keyblock *to)
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{
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return copy_EncryptionKey(inblock, to);
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}
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_copy_keyblock (krb5_context context,
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const krb5_keyblock *inblock,
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krb5_keyblock **to)
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{
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krb5_keyblock *k;
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k = malloc (sizeof(*k));
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if (k == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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*to = k;
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return krb5_copy_keyblock_contents (context, inblock, k);
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}
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krb5_enctype
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krb5_keyblock_get_enctype(const krb5_keyblock *block)
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{
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return block->keytype;
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}
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/*
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* Fill in `key' with key data of type `enctype' from `data' of length
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* `size'. Key should be freed using krb5_free_keyblock_contents.
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*/
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krb5_error_code KRB5_LIB_FUNCTION
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krb5_keyblock_init(krb5_context context,
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krb5_enctype type,
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const void *data,
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size_t size,
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krb5_keyblock *key)
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{
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krb5_error_code ret;
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size_t len;
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memset(key, 0, sizeof(*key));
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ret = krb5_enctype_keysize(context, type, &len);
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if (ret)
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return ret;
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if (len != size) {
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krb5_set_error_message(context, KRB5_PROG_ETYPE_NOSUPP,
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"Encryption key %d is %lu bytes "
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"long, %lu was passed in",
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type, (unsigned long)len, (unsigned long)size);
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return KRB5_PROG_ETYPE_NOSUPP;
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}
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ret = krb5_data_copy(&key->keyvalue, data, len);
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if(ret) {
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krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
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return ret;
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}
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key->keytype = type;
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return 0;
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}
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