rpc_enc.c revision 55714
155714Skris/* crypto/des/rpc_enc.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include "rpc_des.h" 6055714Skris#include "des_locl.h" 6155714Skris#include "des_ver.h" 6255714Skris 6355714Skrisint _des_crypt(char *buf,int len,struct desparams *desp); 6455714Skrisint _des_crypt(char *buf, int len, struct desparams *desp) 6555714Skris { 6655714Skris des_key_schedule ks; 6755714Skris int enc; 6855714Skris 6955714Skris des_set_key(&desp->des_key,ks); 7055714Skris enc=(desp->des_dir == ENCRYPT)?DES_ENCRYPT:DES_DECRYPT; 7155714Skris 7255714Skris if (desp->des_mode == CBC) 7355714Skris des_ecb_encrypt((const_des_cblock *)desp->UDES.UDES_buf, 7455714Skris (des_cblock *)desp->UDES.UDES_buf,ks, 7555714Skris enc); 7655714Skris else 7755714Skris { 7855714Skris des_ncbc_encrypt(desp->UDES.UDES_buf,desp->UDES.UDES_buf, 7955714Skris len,ks,&desp->des_ivec,enc); 8055714Skris#ifdef undef 8155714Skris /* len will always be %8 if called from common_crypt 8255714Skris * in secure_rpc. 8355714Skris * Libdes's cbc encrypt does not copy back the iv, 8455714Skris * so we have to do it here. */ 8555714Skris /* It does now :-) eay 20/09/95 */ 8655714Skris 8755714Skris a=(char *)&(desp->UDES.UDES_buf[len-8]); 8855714Skris b=(char *)&(desp->des_ivec[0]); 8955714Skris 9055714Skris *(a++)= *(b++); *(a++)= *(b++); 9155714Skris *(a++)= *(b++); *(a++)= *(b++); 9255714Skris *(a++)= *(b++); *(a++)= *(b++); 9355714Skris *(a++)= *(b++); *(a++)= *(b++); 9455714Skris#endif 9555714Skris } 9655714Skris return(1); 9755714Skris } 9855714Skris 99