1/* 2 * Copyright (c) 2011 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 37krb5_error_code 38_krb5_fast_cf2(krb5_context context, 39 krb5_keyblock *key1, 40 const char *pepper1, 41 krb5_keyblock *key2, 42 const char *pepper2, 43 krb5_keyblock *armorkey, 44 krb5_crypto *armor_crypto) 45{ 46 krb5_crypto crypto1, crypto2; 47 krb5_data pa1, pa2; 48 krb5_error_code ret; 49 50 ret = krb5_crypto_init(context, key1, 0, &crypto1); 51 if (ret) 52 return ret; 53 54 ret = krb5_crypto_init(context, key2, 0, &crypto2); 55 if (ret) { 56 krb5_crypto_destroy(context, crypto1); 57 return ret; 58 } 59 60 pa1.data = rk_UNCONST(pepper1); 61 pa1.length = strlen(pepper1); 62 pa2.data = rk_UNCONST(pepper2); 63 pa2.length = strlen(pepper2); 64 65 ret = krb5_crypto_fx_cf2(context, crypto1, crypto2, &pa1, &pa2, 66 key1->keytype, armorkey); 67 krb5_crypto_destroy(context, crypto1); 68 krb5_crypto_destroy(context, crypto2); 69 if (ret) 70 return ret; 71 72 if (armor_crypto) { 73 ret = krb5_crypto_init(context, armorkey, 0, armor_crypto); 74 if (ret) 75 krb5_free_keyblock_contents(context, armorkey); 76 } 77 78 return ret; 79} 80 81krb5_error_code 82_krb5_fast_armor_key(krb5_context context, 83 krb5_keyblock *subkey, 84 krb5_keyblock *sessionkey, 85 krb5_keyblock *armorkey, 86 krb5_crypto *armor_crypto) 87{ 88 return _krb5_fast_cf2(context, 89 subkey, 90 "subkeyarmor", 91 sessionkey, 92 "ticketarmor", 93 armorkey, 94 armor_crypto); 95} 96