des_locl.h revision 267654
1/* crypto/des/des_locl.h */ 2/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@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@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@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@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#ifndef HEADER_DES_LOCL_H 60#define HEADER_DES_LOCL_H 61 62#include <openssl/e_os2.h> 63 64#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16) 65#ifndef OPENSSL_SYS_MSDOS 66#define OPENSSL_SYS_MSDOS 67#endif 68#endif 69 70#include <stdio.h> 71#include <stdlib.h> 72 73#ifndef OPENSSL_SYS_MSDOS 74#if !defined(OPENSSL_SYS_VMS) || defined(__DECC) 75#ifdef OPENSSL_UNISTD 76# include OPENSSL_UNISTD 77#else 78# include <unistd.h> 79#endif 80#include <math.h> 81#endif 82#endif 83#include <openssl/des.h> 84 85#ifdef OPENSSL_SYS_MSDOS /* Visual C++ 2.1 (Windows NT/95) */ 86#include <stdlib.h> 87#include <errno.h> 88#include <time.h> 89#include <io.h> 90#endif 91 92#if defined(__STDC__) || defined(OPENSSL_SYS_VMS) || defined(M_XENIX) || defined(OPENSSL_SYS_MSDOS) 93#include <string.h> 94#endif 95 96#ifdef OPENSSL_BUILD_SHLIBCRYPTO 97# undef OPENSSL_EXTERN 98# define OPENSSL_EXTERN OPENSSL_EXPORT 99#endif 100 101#define ITERATIONS 16 102#define HALF_ITERATIONS 8 103 104/* used in des_read and des_write */ 105#define MAXWRITE (1024*16) 106#define BSIZE (MAXWRITE+4) 107 108#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ 109 l|=((DES_LONG)(*((c)++)))<< 8L, \ 110 l|=((DES_LONG)(*((c)++)))<<16L, \ 111 l|=((DES_LONG)(*((c)++)))<<24L) 112 113/* NOTE - c is not incremented as per c2l */ 114#define c2ln(c,l1,l2,n) { \ 115 c+=n; \ 116 l1=l2=0; \ 117 switch (n) { \ 118 case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \ 119 case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \ 120 case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \ 121 case 5: l2|=((DES_LONG)(*(--(c)))); \ 122 case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \ 123 case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \ 124 case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \ 125 case 1: l1|=((DES_LONG)(*(--(c)))); \ 126 } \ 127 } 128 129#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 130 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 131 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 132 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 133 134/* replacements for htonl and ntohl since I have no idea what to do 135 * when faced with machines with 8 byte longs. */ 136#define HDRSIZE 4 137 138#define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \ 139 l|=((DES_LONG)(*((c)++)))<<16L, \ 140 l|=((DES_LONG)(*((c)++)))<< 8L, \ 141 l|=((DES_LONG)(*((c)++)))) 142 143#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ 144 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 145 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 146 *((c)++)=(unsigned char)(((l) )&0xff)) 147 148/* NOTE - c is not incremented as per l2c */ 149#define l2cn(l1,l2,c,n) { \ 150 c+=n; \ 151 switch (n) { \ 152 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 153 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 154 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 155 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 156 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 157 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 158 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 159 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 160 } \ 161 } 162 163#if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) || defined(__ICC) 164#define ROTATE(a,n) (_lrotr(a,n)) 165#elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC) 166# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__) 167# define ROTATE(a,n) ({ register unsigned int ret; \ 168 asm ("rorl %1,%0" \ 169 : "=r"(ret) \ 170 : "I"(n),"0"(a) \ 171 : "cc"); \ 172 ret; \ 173 }) 174# endif 175#endif 176#ifndef ROTATE 177#define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n)))) 178#endif 179 180/* Don't worry about the LOAD_DATA() stuff, that is used by 181 * fcrypt() to add it's little bit to the front */ 182 183#ifdef DES_FCRYPT 184 185#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \ 186 { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); } 187 188#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ 189 t=R^(R>>16L); \ 190 u=t&E0; t&=E1; \ 191 tmp=(u<<16); u^=R^s[S ]; u^=tmp; \ 192 tmp=(t<<16); t^=R^s[S+1]; t^=tmp 193#else 194#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g) 195#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ 196 u=R^s[S ]; \ 197 t=R^s[S+1] 198#endif 199 200/* The changes to this macro may help or hinder, depending on the 201 * compiler and the architecture. gcc2 always seems to do well :-). 202 * Inspired by Dana How <how@isl.stanford.edu> 203 * DO NOT use the alternative version on machines with 8 byte longs. 204 * It does not seem to work on the Alpha, even when DES_LONG is 4 205 * bytes, probably an issue of accessing non-word aligned objects :-( */ 206#ifdef DES_PTR 207 208/* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there 209 * is no reason to not xor all the sub items together. This potentially 210 * saves a register since things can be xored directly into L */ 211 212#if defined(DES_RISC1) || defined(DES_RISC2) 213#ifdef DES_RISC1 214#define D_ENCRYPT(LL,R,S) { \ 215 unsigned int u1,u2,u3; \ 216 LOAD_DATA(R,S,u,t,E0,E1,u1); \ 217 u2=(int)u>>8L; \ 218 u1=(int)u&0xfc; \ 219 u2&=0xfc; \ 220 t=ROTATE(t,4); \ 221 u>>=16L; \ 222 LL^= *(const DES_LONG *)(des_SP +u1); \ 223 LL^= *(const DES_LONG *)(des_SP+0x200+u2); \ 224 u3=(int)(u>>8L); \ 225 u1=(int)u&0xfc; \ 226 u3&=0xfc; \ 227 LL^= *(const DES_LONG *)(des_SP+0x400+u1); \ 228 LL^= *(const DES_LONG *)(des_SP+0x600+u3); \ 229 u2=(int)t>>8L; \ 230 u1=(int)t&0xfc; \ 231 u2&=0xfc; \ 232 t>>=16L; \ 233 LL^= *(const DES_LONG *)(des_SP+0x100+u1); \ 234 LL^= *(const DES_LONG *)(des_SP+0x300+u2); \ 235 u3=(int)t>>8L; \ 236 u1=(int)t&0xfc; \ 237 u3&=0xfc; \ 238 LL^= *(const DES_LONG *)(des_SP+0x500+u1); \ 239 LL^= *(const DES_LONG *)(des_SP+0x700+u3); } 240#endif 241#ifdef DES_RISC2 242#define D_ENCRYPT(LL,R,S) { \ 243 unsigned int u1,u2,s1,s2; \ 244 LOAD_DATA(R,S,u,t,E0,E1,u1); \ 245 u2=(int)u>>8L; \ 246 u1=(int)u&0xfc; \ 247 u2&=0xfc; \ 248 t=ROTATE(t,4); \ 249 LL^= *(const DES_LONG *)(des_SP +u1); \ 250 LL^= *(const DES_LONG *)(des_SP+0x200+u2); \ 251 s1=(int)(u>>16L); \ 252 s2=(int)(u>>24L); \ 253 s1&=0xfc; \ 254 s2&=0xfc; \ 255 LL^= *(const DES_LONG *)(des_SP+0x400+s1); \ 256 LL^= *(const DES_LONG *)(des_SP+0x600+s2); \ 257 u2=(int)t>>8L; \ 258 u1=(int)t&0xfc; \ 259 u2&=0xfc; \ 260 LL^= *(const DES_LONG *)(des_SP+0x100+u1); \ 261 LL^= *(const DES_LONG *)(des_SP+0x300+u2); \ 262 s1=(int)(t>>16L); \ 263 s2=(int)(t>>24L); \ 264 s1&=0xfc; \ 265 s2&=0xfc; \ 266 LL^= *(const DES_LONG *)(des_SP+0x500+s1); \ 267 LL^= *(const DES_LONG *)(des_SP+0x700+s2); } 268#endif 269#else 270#define D_ENCRYPT(LL,R,S) { \ 271 LOAD_DATA_tmp(R,S,u,t,E0,E1); \ 272 t=ROTATE(t,4); \ 273 LL^= \ 274 *(const DES_LONG *)(des_SP +((u )&0xfc))^ \ 275 *(const DES_LONG *)(des_SP+0x200+((u>> 8L)&0xfc))^ \ 276 *(const DES_LONG *)(des_SP+0x400+((u>>16L)&0xfc))^ \ 277 *(const DES_LONG *)(des_SP+0x600+((u>>24L)&0xfc))^ \ 278 *(const DES_LONG *)(des_SP+0x100+((t )&0xfc))^ \ 279 *(const DES_LONG *)(des_SP+0x300+((t>> 8L)&0xfc))^ \ 280 *(const DES_LONG *)(des_SP+0x500+((t>>16L)&0xfc))^ \ 281 *(const DES_LONG *)(des_SP+0x700+((t>>24L)&0xfc)); } 282#endif 283 284#else /* original version */ 285 286#if defined(DES_RISC1) || defined(DES_RISC2) 287#ifdef DES_RISC1 288#define D_ENCRYPT(LL,R,S) {\ 289 unsigned int u1,u2,u3; \ 290 LOAD_DATA(R,S,u,t,E0,E1,u1); \ 291 u>>=2L; \ 292 t=ROTATE(t,6); \ 293 u2=(int)u>>8L; \ 294 u1=(int)u&0x3f; \ 295 u2&=0x3f; \ 296 u>>=16L; \ 297 LL^=DES_SPtrans[0][u1]; \ 298 LL^=DES_SPtrans[2][u2]; \ 299 u3=(int)u>>8L; \ 300 u1=(int)u&0x3f; \ 301 u3&=0x3f; \ 302 LL^=DES_SPtrans[4][u1]; \ 303 LL^=DES_SPtrans[6][u3]; \ 304 u2=(int)t>>8L; \ 305 u1=(int)t&0x3f; \ 306 u2&=0x3f; \ 307 t>>=16L; \ 308 LL^=DES_SPtrans[1][u1]; \ 309 LL^=DES_SPtrans[3][u2]; \ 310 u3=(int)t>>8L; \ 311 u1=(int)t&0x3f; \ 312 u3&=0x3f; \ 313 LL^=DES_SPtrans[5][u1]; \ 314 LL^=DES_SPtrans[7][u3]; } 315#endif 316#ifdef DES_RISC2 317#define D_ENCRYPT(LL,R,S) {\ 318 unsigned int u1,u2,s1,s2; \ 319 LOAD_DATA(R,S,u,t,E0,E1,u1); \ 320 u>>=2L; \ 321 t=ROTATE(t,6); \ 322 u2=(int)u>>8L; \ 323 u1=(int)u&0x3f; \ 324 u2&=0x3f; \ 325 LL^=DES_SPtrans[0][u1]; \ 326 LL^=DES_SPtrans[2][u2]; \ 327 s1=(int)u>>16L; \ 328 s2=(int)u>>24L; \ 329 s1&=0x3f; \ 330 s2&=0x3f; \ 331 LL^=DES_SPtrans[4][s1]; \ 332 LL^=DES_SPtrans[6][s2]; \ 333 u2=(int)t>>8L; \ 334 u1=(int)t&0x3f; \ 335 u2&=0x3f; \ 336 LL^=DES_SPtrans[1][u1]; \ 337 LL^=DES_SPtrans[3][u2]; \ 338 s1=(int)t>>16; \ 339 s2=(int)t>>24L; \ 340 s1&=0x3f; \ 341 s2&=0x3f; \ 342 LL^=DES_SPtrans[5][s1]; \ 343 LL^=DES_SPtrans[7][s2]; } 344#endif 345 346#else 347 348#define D_ENCRYPT(LL,R,S) {\ 349 LOAD_DATA_tmp(R,S,u,t,E0,E1); \ 350 t=ROTATE(t,4); \ 351 LL^=\ 352 DES_SPtrans[0][(u>> 2L)&0x3f]^ \ 353 DES_SPtrans[2][(u>>10L)&0x3f]^ \ 354 DES_SPtrans[4][(u>>18L)&0x3f]^ \ 355 DES_SPtrans[6][(u>>26L)&0x3f]^ \ 356 DES_SPtrans[1][(t>> 2L)&0x3f]^ \ 357 DES_SPtrans[3][(t>>10L)&0x3f]^ \ 358 DES_SPtrans[5][(t>>18L)&0x3f]^ \ 359 DES_SPtrans[7][(t>>26L)&0x3f]; } 360#endif 361#endif 362 363 /* IP and FP 364 * The problem is more of a geometric problem that random bit fiddling. 365 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6 366 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4 367 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2 368 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0 369 370 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7 371 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5 372 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3 373 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1 374 375 The output has been subject to swaps of the form 376 0 1 -> 3 1 but the odd and even bits have been put into 377 2 3 2 0 378 different words. The main trick is to remember that 379 t=((l>>size)^r)&(mask); 380 r^=t; 381 l^=(t<<size); 382 can be used to swap and move bits between words. 383 384 So l = 0 1 2 3 r = 16 17 18 19 385 4 5 6 7 20 21 22 23 386 8 9 10 11 24 25 26 27 387 12 13 14 15 28 29 30 31 388 becomes (for size == 2 and mask == 0x3333) 389 t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19 390 6^20 7^21 -- -- 4 5 20 21 6 7 22 23 391 10^24 11^25 -- -- 8 9 24 25 10 11 24 25 392 14^28 15^29 -- -- 12 13 28 29 14 15 28 29 393 394 Thanks for hints from Richard Outerbridge - he told me IP&FP 395 could be done in 15 xor, 10 shifts and 5 ands. 396 When I finally started to think of the problem in 2D 397 I first got ~42 operations without xors. When I remembered 398 how to use xors :-) I got it to its final state. 399 */ 400#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ 401 (b)^=(t),\ 402 (a)^=((t)<<(n))) 403 404#define IP(l,r) \ 405 { \ 406 register DES_LONG tt; \ 407 PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \ 408 PERM_OP(l,r,tt,16,0x0000ffffL); \ 409 PERM_OP(r,l,tt, 2,0x33333333L); \ 410 PERM_OP(l,r,tt, 8,0x00ff00ffL); \ 411 PERM_OP(r,l,tt, 1,0x55555555L); \ 412 } 413 414#define FP(l,r) \ 415 { \ 416 register DES_LONG tt; \ 417 PERM_OP(l,r,tt, 1,0x55555555L); \ 418 PERM_OP(r,l,tt, 8,0x00ff00ffL); \ 419 PERM_OP(l,r,tt, 2,0x33333333L); \ 420 PERM_OP(r,l,tt,16,0x0000ffffL); \ 421 PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \ 422 } 423 424extern const DES_LONG DES_SPtrans[8][64]; 425 426void fcrypt_body(DES_LONG *out,DES_key_schedule *ks, 427 DES_LONG Eswap0, DES_LONG Eswap1); 428#endif 429