/* * Copyright (c) 1997 - 2001 Kungliga Tekniska H�gskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "krb5_locl.h" RCSID("$Id: keyblock.c,v 1.17 2005/05/18 04:21:31 lha Exp $"); void KRB5_LIB_FUNCTION krb5_keyblock_zero(krb5_keyblock *keyblock) { keyblock->keytype = 0; krb5_data_zero(&keyblock->keyvalue); } void KRB5_LIB_FUNCTION krb5_free_keyblock_contents(krb5_context context, krb5_keyblock *keyblock) { if(keyblock) { if (keyblock->keyvalue.data != NULL) memset(keyblock->keyvalue.data, 0, keyblock->keyvalue.length); krb5_data_free (&keyblock->keyvalue); keyblock->keytype = ENCTYPE_NULL; } } void KRB5_LIB_FUNCTION krb5_free_keyblock(krb5_context context, krb5_keyblock *keyblock) { if(keyblock){ krb5_free_keyblock_contents(context, keyblock); free(keyblock); } } krb5_error_code KRB5_LIB_FUNCTION krb5_copy_keyblock_contents (krb5_context context, const krb5_keyblock *inblock, krb5_keyblock *to) { return copy_EncryptionKey(inblock, to); } krb5_error_code KRB5_LIB_FUNCTION krb5_copy_keyblock (krb5_context context, const krb5_keyblock *inblock, krb5_keyblock **to) { krb5_keyblock *k; k = malloc (sizeof(*k)); if (k == NULL) { krb5_set_error_string(context, "malloc: out of memory"); return ENOMEM; } *to = k; return krb5_copy_keyblock_contents (context, inblock, k); } krb5_enctype krb5_keyblock_get_enctype(const krb5_keyblock *block) { return block->keytype; } /* * Fill in `key' with key data of type `enctype' from `data' of length * `size'. Key should be freed using krb5_free_keyblock_contents. */ krb5_error_code KRB5_LIB_FUNCTION krb5_keyblock_init(krb5_context context, krb5_enctype type, const void *data, size_t size, krb5_keyblock *key) { krb5_error_code ret; size_t len; memset(key, 0, sizeof(*key)); ret = krb5_enctype_keysize(context, type, &len); if (ret) return ret; if (len != size) { krb5_set_error_string(context, "Encryption key %d is %lu bytes " "long, %lu was passed in", type, (unsigned long)len, (unsigned long)size); return KRB5_PROG_ETYPE_NOSUPP; } ret = krb5_data_copy(&key->keyvalue, data, len); if(ret) { krb5_set_error_string(context, "malloc failed: %lu", (unsigned long)len); return ret; } key->keytype = type; return 0; }