1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/des/fcrypt_b.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* This version of crypt has been developed from my MIT compatible 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DES library. 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com) 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define DES_FCRYPT 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "des_locl.h" 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#undef DES_FCRYPT 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#undef PERM_OP 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (b)^=(t),\ 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (a)^=((t)<<(n))) 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#undef HPERM_OP 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (a)=(a)^(t)^(t>>(16-(n))))\ 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid fcrypt_body(DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0, 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_LONG Eswap1) 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG l,r,t,u; 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_PTR 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans; 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG *s; 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register int j; 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG E0,E1; 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l=0; 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r=0; 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s=(DES_LONG *)ks; 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project E0=Eswap0; 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project E1=Eswap1; 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (j=0; j<25; j++) 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef DES_UNROLL 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register int i; 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 103221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom for (i=0; i<32; i+=4) 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,i+0); /* 1 */ 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,i+2); /* 2 */ 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r, 0); /* 1 */ 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l, 2); /* 2 */ 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r, 4); /* 3 */ 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l, 6); /* 4 */ 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r, 8); /* 5 */ 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,10); /* 6 */ 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,12); /* 7 */ 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,14); /* 8 */ 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,16); /* 9 */ 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,18); /* 10 */ 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,20); /* 11 */ 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,22); /* 12 */ 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,24); /* 13 */ 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,26); /* 14 */ 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(l,r,28); /* 15 */ 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project D_ENCRYPT(r,l,30); /* 16 */ 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=l; 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l=r; 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r=t; 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l=ROTATE(l,3)&0xffffffffL; 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r=ROTATE(r,3)&0xffffffffL; 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,t, 1,0x55555555L); 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,t, 8,0x00ff00ffL); 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,t, 2,0x33333333L); 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,t,16,0x0000ffffL); 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,t, 4,0x0f0f0f0fL); 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out[0]=r; 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out[1]=l; 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 144