1 /* $NetBSD: fast.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2011 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "krb5_locl.h" 37 38 39 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 40 _krb5_fast_cf2(krb5_context context, 41 krb5_keyblock *key1, 42 const char *pepper1, 43 krb5_keyblock *key2, 44 const char *pepper2, 45 krb5_keyblock *armorkey, 46 krb5_crypto *armor_crypto) 47 { 48 krb5_crypto crypto1, crypto2; 49 krb5_data pa1, pa2; 50 krb5_error_code ret; 51 52 ret = krb5_crypto_init(context, key1, 0, &crypto1); 53 if (ret) 54 return ret; 55 56 ret = krb5_crypto_init(context, key2, 0, &crypto2); 57 if (ret) { 58 krb5_crypto_destroy(context, crypto1); 59 return ret; 60 } 61 62 pa1.data = rk_UNCONST(pepper1); 63 pa1.length = strlen(pepper1); 64 pa2.data = rk_UNCONST(pepper2); 65 pa2.length = strlen(pepper2); 66 67 ret = krb5_crypto_fx_cf2(context, crypto1, crypto2, &pa1, &pa2, 68 key1->keytype, armorkey); 69 krb5_crypto_destroy(context, crypto1); 70 krb5_crypto_destroy(context, crypto2); 71 if (ret) 72 return ret; 73 74 if (armor_crypto) { 75 ret = krb5_crypto_init(context, armorkey, 0, armor_crypto); 76 if (ret) 77 krb5_free_keyblock_contents(context, armorkey); 78 } 79 80 return ret; 81 } 82 83 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 84 _krb5_fast_armor_key(krb5_context context, 85 krb5_keyblock *subkey, 86 krb5_keyblock *sessionkey, 87 krb5_keyblock *armorkey, 88 krb5_crypto *armor_crypto) 89 { 90 return _krb5_fast_cf2(context, 91 subkey, 92 "subkeyarmor", 93 sessionkey, 94 "ticketarmor", 95 armorkey, 96 armor_crypto); 97 } 98