1 /* crypto/des/rpc_enc.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay (at) cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include "rpc_des.h" 60 #include "des_locl.h" 61 #include "des_ver.h" 62 63 int _des_crypt(char *buf,int len,struct desparams *desp); 64 int _des_crypt(char *buf, int len, struct desparams *desp) 65 { 66 DES_key_schedule ks; 67 int enc; 68 69 DES_set_key_unchecked(&desp->des_key,&ks); 70 enc=(desp->des_dir == ENCRYPT)?DES_ENCRYPT:DES_DECRYPT; 71 72 if (desp->des_mode == CBC) 73 DES_ecb_encrypt((const_DES_cblock *)desp->UDES.UDES_buf, 74 (DES_cblock *)desp->UDES.UDES_buf,&ks, 75 enc); 76 else 77 { 78 DES_ncbc_encrypt(desp->UDES.UDES_buf,desp->UDES.UDES_buf, 79 len,&ks,&desp->des_ivec,enc); 80 #ifdef undef 81 /* len will always be %8 if called from common_crypt 82 * in secure_rpc. 83 * Libdes's cbc encrypt does not copy back the iv, 84 * so we have to do it here. */ 85 /* It does now :-) eay 20/09/95 */ 86 87 a=(char *)&(desp->UDES.UDES_buf[len-8]); 88 b=(char *)&(desp->des_ivec[0]); 89 90 *(a++)= *(b++); *(a++)= *(b++); 91 *(a++)= *(b++); *(a++)= *(b++); 92 *(a++)= *(b++); *(a++)= *(b++); 93 *(a++)= *(b++); *(a++)= *(b++); 94 #endif 95 } 96 return(1); 97 } 98 99
