1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/des/des_locl.h */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1997 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#ifndef HEADER_DES_LOCL_H 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define HEADER_DES_LOCL_H 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/e_os2.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 64221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#if defined(OPENSSL_SYS_WIN32) 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_SYS_MSDOS 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define OPENSSL_SYS_MSDOS 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdlib.h> 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_SYS_MSDOS 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#if !defined(OPENSSL_SYS_VMS) || defined(__DECC) 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef OPENSSL_UNISTD 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# include OPENSSL_UNISTD 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# include <unistd.h> 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <math.h> 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/des.h> 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef OPENSSL_SYS_MSDOS /* Visual C++ 2.1 (Windows NT/95) */ 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdlib.h> 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <errno.h> 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <time.h> 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <io.h> 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#if defined(__STDC__) || defined(OPENSSL_SYS_VMS) || defined(M_XENIX) || defined(OPENSSL_SYS_MSDOS) 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <string.h> 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef OPENSSL_BUILD_SHLIBCRYPTO 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# undef OPENSSL_EXTERN 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# define OPENSSL_EXTERN OPENSSL_EXPORT 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define ITERATIONS 16 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define HALF_ITERATIONS 8 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* used in des_read and des_write */ 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define MAXWRITE (1024*16) 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define BSIZE (MAXWRITE+4) 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))<< 8L, \ 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))<<16L, \ 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))<<24L) 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* NOTE - c is not incremented as per c2l */ 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define c2ln(c,l1,l2,n) { \ 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c+=n; \ 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l1=l2=0; \ 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (n) { \ 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \ 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \ 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \ 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 5: l2|=((DES_LONG)(*(--(c)))); \ 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \ 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \ 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \ 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 1: l1|=((DES_LONG)(*(--(c)))); \ 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } \ 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* replacements for htonl and ntohl since I have no idea what to do 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * when faced with machines with 8 byte longs. */ 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define HDRSIZE 4 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \ 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))<<16L, \ 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))<< 8L, \ 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l|=((DES_LONG)(*((c)++)))) 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *((c)++)=(unsigned char)(((l) )&0xff)) 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* NOTE - c is not incremented as per l2c */ 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define l2cn(l1,l2,c,n) { \ 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c+=n; \ 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project switch (n) { \ 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } \ 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) || defined(__ICC) 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define ROTATE(a,n) (_lrotr(a,n)) 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC) 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__) 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# define ROTATE(a,n) ({ register unsigned int ret; \ 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project asm ("rorl %1,%0" \ 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project : "=r"(ret) \ 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project : "I"(n),"0"(a) \ 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project : "cc"); \ 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret; \ 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project }) 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# endif 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef ROTATE 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n)))) 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Don't worry about the LOAD_DATA() stuff, that is used by 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * fcrypt() to add it's little bit to the front */ 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_FCRYPT 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \ 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); } 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=R^(R>>16L); \ 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u=t&E0; t&=E1; \ 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tmp=(u<<16); u^=R^s[S ]; u^=tmp; \ 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project tmp=(t<<16); t^=R^s[S+1]; t^=tmp 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g) 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u=R^s[S ]; \ 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=R^s[S+1] 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* The changes to this macro may help or hinder, depending on the 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * compiler and the architecture. gcc2 always seems to do well :-). 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Inspired by Dana How <how@isl.stanford.edu> 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DO NOT use the alternative version on machines with 8 byte longs. 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * It does not seem to work on the Alpha, even when DES_LONG is 4 205656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * bytes, probably an issue of accessing non-word aligned objects :-( */ 206656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_PTR 207656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * is no reason to not xor all the sub items together. This potentially 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * saves a register since things can be xored directly into L */ 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#if defined(DES_RISC1) || defined(DES_RISC2) 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_RISC1 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) { \ 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int u1,u2,u3; \ 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA(R,S,u,t,E0,E1,u1); \ 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)u>>8L; \ 218656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0xfc; \ 219656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0xfc; \ 220656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,4); \ 221656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u>>=16L; \ 222656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP +u1); \ 223656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x200+u2); \ 224656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3=(int)(u>>8L); \ 225656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0xfc; \ 226656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3&=0xfc; \ 227656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x400+u1); \ 228656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x600+u3); \ 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)t>>8L; \ 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0xfc; \ 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0xfc; \ 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t>>=16L; \ 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x100+u1); \ 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x300+u2); \ 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3=(int)t>>8L; \ 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0xfc; \ 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3&=0xfc; \ 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x500+u1); \ 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x700+u3); } 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_RISC2 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) { \ 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int u1,u2,s1,s2; \ 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA(R,S,u,t,E0,E1,u1); \ 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)u>>8L; \ 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0xfc; \ 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0xfc; \ 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,4); \ 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP +u1); \ 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x200+u2); \ 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1=(int)(u>>16L); \ 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2=(int)(u>>24L); \ 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1&=0xfc; \ 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2&=0xfc; \ 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x400+s1); \ 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x600+s2); \ 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)t>>8L; \ 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0xfc; \ 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0xfc; \ 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x100+u1); \ 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x300+u2); \ 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1=(int)(t>>16L); \ 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2=(int)(t>>24L); \ 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1&=0xfc; \ 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2&=0xfc; \ 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x500+s1); \ 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= *(const DES_LONG *)(des_SP+0x700+s2); } 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) { \ 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA_tmp(R,S,u,t,E0,E1); \ 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,4); \ 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^= \ 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP +((u )&0xfc))^ \ 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x200+((u>> 8L)&0xfc))^ \ 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x400+((u>>16L)&0xfc))^ \ 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x600+((u>>24L)&0xfc))^ \ 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x100+((t )&0xfc))^ \ 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x300+((t>> 8L)&0xfc))^ \ 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x500+((t>>16L)&0xfc))^ \ 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *(const DES_LONG *)(des_SP+0x700+((t>>24L)&0xfc)); } 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else /* original version */ 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#if defined(DES_RISC1) || defined(DES_RISC2) 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_RISC1 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) {\ 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int u1,u2,u3; \ 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA(R,S,u,t,E0,E1,u1); \ 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u>>=2L; \ 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,6); \ 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)u>>8L; \ 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0x3f; \ 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0x3f; \ 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u>>=16L; \ 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[0][u1]; \ 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[2][u2]; \ 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3=(int)u>>8L; \ 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0x3f; \ 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3&=0x3f; \ 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[4][u1]; \ 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[6][u3]; \ 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)t>>8L; \ 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0x3f; \ 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0x3f; \ 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t>>=16L; \ 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[1][u1]; \ 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[3][u2]; \ 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3=(int)t>>8L; \ 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0x3f; \ 312656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u3&=0x3f; \ 313656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[5][u1]; \ 314656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[7][u3]; } 315656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 316656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef DES_RISC2 317656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) {\ 318656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int u1,u2,s1,s2; \ 319656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA(R,S,u,t,E0,E1,u1); \ 320656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u>>=2L; \ 321656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,6); \ 322656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)u>>8L; \ 323656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)u&0x3f; \ 324656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0x3f; \ 325656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[0][u1]; \ 326656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[2][u2]; \ 327656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1=(int)u>>16L; \ 328656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2=(int)u>>24L; \ 329656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1&=0x3f; \ 330656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2&=0x3f; \ 331656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[4][s1]; \ 332656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[6][s2]; \ 333656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2=(int)t>>8L; \ 334656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u1=(int)t&0x3f; \ 335656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project u2&=0x3f; \ 336656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[1][u1]; \ 337656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[3][u2]; \ 338656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1=(int)t>>16; \ 339656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2=(int)t>>24L; \ 340656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s1&=0x3f; \ 341656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project s2&=0x3f; \ 342656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[5][s1]; \ 343656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=DES_SPtrans[7][s2]; } 344656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 345656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 346656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#else 347656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 348656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define D_ENCRYPT(LL,R,S) {\ 349656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LOAD_DATA_tmp(R,S,u,t,E0,E1); \ 350656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=ROTATE(t,4); \ 351656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project LL^=\ 352656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[0][(u>> 2L)&0x3f]^ \ 353656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[2][(u>>10L)&0x3f]^ \ 354656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[4][(u>>18L)&0x3f]^ \ 355656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[6][(u>>26L)&0x3f]^ \ 356656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[1][(t>> 2L)&0x3f]^ \ 357656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[3][(t>>10L)&0x3f]^ \ 358656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[5][(t>>18L)&0x3f]^ \ 359656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_SPtrans[7][(t>>26L)&0x3f]; } 360656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 361656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 362656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 363656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* IP and FP 364656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The problem is more of a geometric problem that random bit fiddling. 365656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6 366656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4 367656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2 368656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0 369656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 370656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7 371656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5 372656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3 373656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1 374656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 375656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project The output has been subject to swaps of the form 376656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 0 1 -> 3 1 but the odd and even bits have been put into 377656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 2 3 2 0 378656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project different words. The main trick is to remember that 379656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t=((l>>size)^r)&(mask); 380656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r^=t; 381656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project l^=(t<<size); 382656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project can be used to swap and move bits between words. 383656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 384656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project So l = 0 1 2 3 r = 16 17 18 19 385656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 4 5 6 7 20 21 22 23 386656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 8 9 10 11 24 25 26 27 387656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 12 13 14 15 28 29 30 31 388656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project becomes (for size == 2 and mask == 0x3333) 389656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19 390656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 6^20 7^21 -- -- 4 5 20 21 6 7 22 23 391656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 10^24 11^25 -- -- 8 9 24 25 10 11 24 25 392656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 14^28 15^29 -- -- 12 13 28 29 14 15 28 29 393656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 394656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project Thanks for hints from Richard Outerbridge - he told me IP&FP 395656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project could be done in 15 xor, 10 shifts and 5 ands. 396656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project When I finally started to think of the problem in 2D 397656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project I first got ~42 operations without xors. When I remembered 398656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project how to use xors :-) I got it to its final state. 399656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 400656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ 401656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (b)^=(t),\ 402656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project (a)^=((t)<<(n))) 403656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 404656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define IP(l,r) \ 405656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { \ 406656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG tt; \ 407656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \ 408656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,tt,16,0x0000ffffL); \ 409656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,tt, 2,0x33333333L); \ 410656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,tt, 8,0x00ff00ffL); \ 411656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,tt, 1,0x55555555L); \ 412656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 413656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 414656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#define FP(l,r) \ 415656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { \ 416656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project register DES_LONG tt; \ 417656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,tt, 1,0x55555555L); \ 418656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,tt, 8,0x00ff00ffL); \ 419656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,tt, 2,0x33333333L); \ 420656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(r,l,tt,16,0x0000ffffL); \ 421656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \ 422656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 423656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 424656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectextern const DES_LONG DES_SPtrans[8][64]; 425656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 426656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid fcrypt_body(DES_LONG *out,DES_key_schedule *ks, 427656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DES_LONG Eswap0, DES_LONG Eswap1); 428221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 429221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifdef OPENSSL_SMALL_FOOTPRINT 430221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#undef DES_UNROLL 431221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 432656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 433