1b6b414c80
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@2597 ec53bebd-3082-4978-b11e-865c3cabbd6b
111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/*
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* Copyright (c) 1997 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. 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 "kdc_locl.h"
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RCSID("$Id$");
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struct timeval now;
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hdb_entry*
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db_fetch(krb5_context context, krb5_principal principal)
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{
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HDB *db;
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hdb_entry *ent;
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krb5_error_code ret;
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ret = hdb_open(context, &db, NULL, O_RDONLY, 0);
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if (ret) {
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kdc_log(0, "Failed to open database: %s",
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krb5_get_err_text(context, ret));
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return NULL;
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}
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ALLOC(ent);
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ent->principal = principal;
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ret = db->fetch(context, db, ent);
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db->close(context, db);
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if(ret){
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free(ent);
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return NULL;
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}
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return ent;
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}
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static des_key_schedule master_key;
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static int master_key_set;
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void
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set_master_key(EncryptionKey *key)
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{
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if(key->keytype != KEYTYPE_DES || key->keyvalue.length != 8)
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abort();
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des_set_random_generator_seed(key->keyvalue.data);
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des_set_key(key->keyvalue.data, master_key);
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master_key_set = 1;
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}
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Key *
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unseal_key(Key *key)
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{
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int i;
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des_cblock iv;
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int num = 0;
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Key *new_key;
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ALLOC(new_key);
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copy_Key(key, new_key);
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if(master_key_set){
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memset(&iv, 0, sizeof(iv));
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des_cfb64_encrypt(key->key.keyvalue.data,
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new_key->key.keyvalue.data,
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key->key.keyvalue.length,
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master_key, &iv, &num, 0);
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}
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return new_key;
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}
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void
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free_key(Key *key)
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{
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memset(key->key.keyvalue.data,
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0,
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key->key.keyvalue.length);
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free_Key(key);
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free(key);
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}
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