1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/des/ncbc_enc.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * #included by: 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * cbc_enc.c (DES_cbc_encrypt) 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * des_enc.c (DES_ncbc_encrypt) 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "des_locl.h" 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef CBC_ENC_C__DONT_UPDATE_IV 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid DES_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_key_schedule *_schedule, DES_cblock *ivec, int enc) 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid DES_ncbc_encrypt(const unsigned char *in, unsigned char *out, long length, 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_key_schedule *_schedule, DES_cblock *ivec, int enc) 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG tin0,tin1; 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG tout0,tout1,xor0,xor1; 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register long l=length; 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_LONG tin[2]; 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char *iv; 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project iv = &(*ivec)[0]; 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (enc) 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(iv,tout0); 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(iv,tout1); 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (l-=8; l>=0; l-=8) 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin0); 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin1); 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin0^=tout0; tin[0]=tin0; 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin1^=tout1; tin[1]=tin1; 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT); 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout0=tin[0]; l2c(tout0,out); 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout1=tin[1]; l2c(tout1,out); 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (l != -8) 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2ln(in,tin0,tin1,l+8); 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin0^=tout0; tin[0]=tin0; 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin1^=tout1; tin[1]=tin1; 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout0=tin[0]; l2c(tout0,out); 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout1=tin[1]; l2c(tout1,out); 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef CBC_ENC_C__DONT_UPDATE_IV 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project iv = &(*ivec)[0]; 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(tout0,iv); 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(tout1,iv); 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(iv,xor0); 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(iv,xor1); 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (l-=8; l>=0; l-=8) 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin0); tin[0]=tin0; 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin1); tin[1]=tin1; 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT); 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout0=tin[0]^xor0; 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout1=tin[1]^xor1; 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(tout0,out); 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(tout1,out); 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project xor0=tin0; 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project xor1=tin1; 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (l != -8) 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin0); tin[0]=tin0; 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c2l(in,tin1); tin[1]=tin1; 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT); 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout0=tin[0]^xor0; 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tout1=tin[1]^xor1; 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2cn(tout0,tout1,out,l+8); 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef CBC_ENC_C__DONT_UPDATE_IV 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project xor0=tin0; 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project xor1=tin1; 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef CBC_ENC_C__DONT_UPDATE_IV 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project iv = &(*ivec)[0]; 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(xor0,iv); 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l2c(xor1,iv); 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin0=tin1=tout0=tout1=xor0=xor1=0; 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tin[0]=tin[1]=0; 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 149