des_enc.c revision 296465
155714Skris/* crypto/des/des_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. 8296465Sdelphij * 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). 15296465Sdelphij * 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. 22296465Sdelphij * 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 :-). 37296465Sdelphij * 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)" 40296465Sdelphij * 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. 52296465Sdelphij * 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 "des_locl.h" 6055714Skris 61109998Smarkmvoid DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc) 62296465Sdelphij{ 63296465Sdelphij register DES_LONG l, r, t, u; 6455714Skris#ifdef DES_PTR 65296465Sdelphij register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; 6655714Skris#endif 6755714Skris#ifndef DES_UNROLL 68296465Sdelphij register int i; 6955714Skris#endif 70296465Sdelphij register DES_LONG *s; 7155714Skris 72296465Sdelphij r = data[0]; 73296465Sdelphij l = data[1]; 7455714Skris 75296465Sdelphij IP(r, l); 76296465Sdelphij /* 77296465Sdelphij * Things have been modified so that the initial rotate is done outside 78296465Sdelphij * the loop. This required the DES_SPtrans values in sp.h to be rotated 79296465Sdelphij * 1 bit to the right. One perl script later and things have a 5% speed 80296465Sdelphij * up on a sparc2. Thanks to Richard Outerbridge 81296465Sdelphij * <71755.204@CompuServe.COM> for pointing this out. 82296465Sdelphij */ 83296465Sdelphij /* clear the top bits on machines with 8byte longs */ 84296465Sdelphij /* shift left by 2 */ 85296465Sdelphij r = ROTATE(r, 29) & 0xffffffffL; 86296465Sdelphij l = ROTATE(l, 29) & 0xffffffffL; 8755714Skris 88296465Sdelphij s = ks->ks->deslong; 89296465Sdelphij /* 90296465Sdelphij * I don't know if it is worth the effort of loop unrolling the inner 91296465Sdelphij * loop 92296465Sdelphij */ 93296465Sdelphij if (enc) { 9455714Skris#ifdef DES_UNROLL 95296465Sdelphij D_ENCRYPT(l, r, 0); /* 1 */ 96296465Sdelphij D_ENCRYPT(r, l, 2); /* 2 */ 97296465Sdelphij D_ENCRYPT(l, r, 4); /* 3 */ 98296465Sdelphij D_ENCRYPT(r, l, 6); /* 4 */ 99296465Sdelphij D_ENCRYPT(l, r, 8); /* 5 */ 100296465Sdelphij D_ENCRYPT(r, l, 10); /* 6 */ 101296465Sdelphij D_ENCRYPT(l, r, 12); /* 7 */ 102296465Sdelphij D_ENCRYPT(r, l, 14); /* 8 */ 103296465Sdelphij D_ENCRYPT(l, r, 16); /* 9 */ 104296465Sdelphij D_ENCRYPT(r, l, 18); /* 10 */ 105296465Sdelphij D_ENCRYPT(l, r, 20); /* 11 */ 106296465Sdelphij D_ENCRYPT(r, l, 22); /* 12 */ 107296465Sdelphij D_ENCRYPT(l, r, 24); /* 13 */ 108296465Sdelphij D_ENCRYPT(r, l, 26); /* 14 */ 109296465Sdelphij D_ENCRYPT(l, r, 28); /* 15 */ 110296465Sdelphij D_ENCRYPT(r, l, 30); /* 16 */ 11155714Skris#else 112296465Sdelphij for (i = 0; i < 32; i += 8) { 113296465Sdelphij D_ENCRYPT(l, r, i + 0); /* 1 */ 114296465Sdelphij D_ENCRYPT(r, l, i + 2); /* 2 */ 115296465Sdelphij D_ENCRYPT(l, r, i + 4); /* 3 */ 116296465Sdelphij D_ENCRYPT(r, l, i + 6); /* 4 */ 117296465Sdelphij } 11855714Skris#endif 119296465Sdelphij } else { 12055714Skris#ifdef DES_UNROLL 121296465Sdelphij D_ENCRYPT(l, r, 30); /* 16 */ 122296465Sdelphij D_ENCRYPT(r, l, 28); /* 15 */ 123296465Sdelphij D_ENCRYPT(l, r, 26); /* 14 */ 124296465Sdelphij D_ENCRYPT(r, l, 24); /* 13 */ 125296465Sdelphij D_ENCRYPT(l, r, 22); /* 12 */ 126296465Sdelphij D_ENCRYPT(r, l, 20); /* 11 */ 127296465Sdelphij D_ENCRYPT(l, r, 18); /* 10 */ 128296465Sdelphij D_ENCRYPT(r, l, 16); /* 9 */ 129296465Sdelphij D_ENCRYPT(l, r, 14); /* 8 */ 130296465Sdelphij D_ENCRYPT(r, l, 12); /* 7 */ 131296465Sdelphij D_ENCRYPT(l, r, 10); /* 6 */ 132296465Sdelphij D_ENCRYPT(r, l, 8); /* 5 */ 133296465Sdelphij D_ENCRYPT(l, r, 6); /* 4 */ 134296465Sdelphij D_ENCRYPT(r, l, 4); /* 3 */ 135296465Sdelphij D_ENCRYPT(l, r, 2); /* 2 */ 136296465Sdelphij D_ENCRYPT(r, l, 0); /* 1 */ 13755714Skris#else 138296465Sdelphij for (i = 30; i > 0; i -= 8) { 139296465Sdelphij D_ENCRYPT(l, r, i - 0); /* 16 */ 140296465Sdelphij D_ENCRYPT(r, l, i - 2); /* 15 */ 141296465Sdelphij D_ENCRYPT(l, r, i - 4); /* 14 */ 142296465Sdelphij D_ENCRYPT(r, l, i - 6); /* 13 */ 143296465Sdelphij } 14455714Skris#endif 145296465Sdelphij } 14655714Skris 147296465Sdelphij /* rotate and clear the top bits on machines with 8byte longs */ 148296465Sdelphij l = ROTATE(l, 3) & 0xffffffffL; 149296465Sdelphij r = ROTATE(r, 3) & 0xffffffffL; 15055714Skris 151296465Sdelphij FP(r, l); 152296465Sdelphij data[0] = l; 153296465Sdelphij data[1] = r; 154296465Sdelphij l = r = t = u = 0; 155296465Sdelphij} 15655714Skris 157109998Smarkmvoid DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) 158296465Sdelphij{ 159296465Sdelphij register DES_LONG l, r, t, u; 16055714Skris#ifdef DES_PTR 161296465Sdelphij register const unsigned char *des_SP = (const unsigned char *)DES_SPtrans; 16255714Skris#endif 16355714Skris#ifndef DES_UNROLL 164296465Sdelphij register int i; 16555714Skris#endif 166296465Sdelphij register DES_LONG *s; 16755714Skris 168296465Sdelphij r = data[0]; 169296465Sdelphij l = data[1]; 17055714Skris 171296465Sdelphij /* 172296465Sdelphij * Things have been modified so that the initial rotate is done outside 173296465Sdelphij * the loop. This required the DES_SPtrans values in sp.h to be rotated 174296465Sdelphij * 1 bit to the right. One perl script later and things have a 5% speed 175296465Sdelphij * up on a sparc2. Thanks to Richard Outerbridge 176296465Sdelphij * <71755.204@CompuServe.COM> for pointing this out. 177296465Sdelphij */ 178296465Sdelphij /* clear the top bits on machines with 8byte longs */ 179296465Sdelphij r = ROTATE(r, 29) & 0xffffffffL; 180296465Sdelphij l = ROTATE(l, 29) & 0xffffffffL; 18155714Skris 182296465Sdelphij s = ks->ks->deslong; 183296465Sdelphij /* 184296465Sdelphij * I don't know if it is worth the effort of loop unrolling the inner 185296465Sdelphij * loop 186296465Sdelphij */ 187296465Sdelphij if (enc) { 18855714Skris#ifdef DES_UNROLL 189296465Sdelphij D_ENCRYPT(l, r, 0); /* 1 */ 190296465Sdelphij D_ENCRYPT(r, l, 2); /* 2 */ 191296465Sdelphij D_ENCRYPT(l, r, 4); /* 3 */ 192296465Sdelphij D_ENCRYPT(r, l, 6); /* 4 */ 193296465Sdelphij D_ENCRYPT(l, r, 8); /* 5 */ 194296465Sdelphij D_ENCRYPT(r, l, 10); /* 6 */ 195296465Sdelphij D_ENCRYPT(l, r, 12); /* 7 */ 196296465Sdelphij D_ENCRYPT(r, l, 14); /* 8 */ 197296465Sdelphij D_ENCRYPT(l, r, 16); /* 9 */ 198296465Sdelphij D_ENCRYPT(r, l, 18); /* 10 */ 199296465Sdelphij D_ENCRYPT(l, r, 20); /* 11 */ 200296465Sdelphij D_ENCRYPT(r, l, 22); /* 12 */ 201296465Sdelphij D_ENCRYPT(l, r, 24); /* 13 */ 202296465Sdelphij D_ENCRYPT(r, l, 26); /* 14 */ 203296465Sdelphij D_ENCRYPT(l, r, 28); /* 15 */ 204296465Sdelphij D_ENCRYPT(r, l, 30); /* 16 */ 20555714Skris#else 206296465Sdelphij for (i = 0; i < 32; i += 8) { 207296465Sdelphij D_ENCRYPT(l, r, i + 0); /* 1 */ 208296465Sdelphij D_ENCRYPT(r, l, i + 2); /* 2 */ 209296465Sdelphij D_ENCRYPT(l, r, i + 4); /* 3 */ 210296465Sdelphij D_ENCRYPT(r, l, i + 6); /* 4 */ 211296465Sdelphij } 21255714Skris#endif 213296465Sdelphij } else { 21455714Skris#ifdef DES_UNROLL 215296465Sdelphij D_ENCRYPT(l, r, 30); /* 16 */ 216296465Sdelphij D_ENCRYPT(r, l, 28); /* 15 */ 217296465Sdelphij D_ENCRYPT(l, r, 26); /* 14 */ 218296465Sdelphij D_ENCRYPT(r, l, 24); /* 13 */ 219296465Sdelphij D_ENCRYPT(l, r, 22); /* 12 */ 220296465Sdelphij D_ENCRYPT(r, l, 20); /* 11 */ 221296465Sdelphij D_ENCRYPT(l, r, 18); /* 10 */ 222296465Sdelphij D_ENCRYPT(r, l, 16); /* 9 */ 223296465Sdelphij D_ENCRYPT(l, r, 14); /* 8 */ 224296465Sdelphij D_ENCRYPT(r, l, 12); /* 7 */ 225296465Sdelphij D_ENCRYPT(l, r, 10); /* 6 */ 226296465Sdelphij D_ENCRYPT(r, l, 8); /* 5 */ 227296465Sdelphij D_ENCRYPT(l, r, 6); /* 4 */ 228296465Sdelphij D_ENCRYPT(r, l, 4); /* 3 */ 229296465Sdelphij D_ENCRYPT(l, r, 2); /* 2 */ 230296465Sdelphij D_ENCRYPT(r, l, 0); /* 1 */ 23155714Skris#else 232296465Sdelphij for (i = 30; i > 0; i -= 8) { 233296465Sdelphij D_ENCRYPT(l, r, i - 0); /* 16 */ 234296465Sdelphij D_ENCRYPT(r, l, i - 2); /* 15 */ 235296465Sdelphij D_ENCRYPT(l, r, i - 4); /* 14 */ 236296465Sdelphij D_ENCRYPT(r, l, i - 6); /* 13 */ 237296465Sdelphij } 23855714Skris#endif 239296465Sdelphij } 240296465Sdelphij /* rotate and clear the top bits on machines with 8byte longs */ 241296465Sdelphij data[0] = ROTATE(l, 3) & 0xffffffffL; 242296465Sdelphij data[1] = ROTATE(r, 3) & 0xffffffffL; 243296465Sdelphij l = r = t = u = 0; 244296465Sdelphij} 24555714Skris 246109998Smarkmvoid DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 247296465Sdelphij DES_key_schedule *ks2, DES_key_schedule *ks3) 248296465Sdelphij{ 249296465Sdelphij register DES_LONG l, r; 25055714Skris 251296465Sdelphij l = data[0]; 252296465Sdelphij r = data[1]; 253296465Sdelphij IP(l, r); 254296465Sdelphij data[0] = l; 255296465Sdelphij data[1] = r; 256296465Sdelphij DES_encrypt2((DES_LONG *)data, ks1, DES_ENCRYPT); 257296465Sdelphij DES_encrypt2((DES_LONG *)data, ks2, DES_DECRYPT); 258296465Sdelphij DES_encrypt2((DES_LONG *)data, ks3, DES_ENCRYPT); 259296465Sdelphij l = data[0]; 260296465Sdelphij r = data[1]; 261296465Sdelphij FP(r, l); 262296465Sdelphij data[0] = l; 263296465Sdelphij data[1] = r; 264296465Sdelphij} 26555714Skris 266109998Smarkmvoid DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 267296465Sdelphij DES_key_schedule *ks2, DES_key_schedule *ks3) 268296465Sdelphij{ 269296465Sdelphij register DES_LONG l, r; 27055714Skris 271296465Sdelphij l = data[0]; 272296465Sdelphij r = data[1]; 273296465Sdelphij IP(l, r); 274296465Sdelphij data[0] = l; 275296465Sdelphij data[1] = r; 276296465Sdelphij DES_encrypt2((DES_LONG *)data, ks3, DES_DECRYPT); 277296465Sdelphij DES_encrypt2((DES_LONG *)data, ks2, DES_ENCRYPT); 278296465Sdelphij DES_encrypt2((DES_LONG *)data, ks1, DES_DECRYPT); 279296465Sdelphij l = data[0]; 280296465Sdelphij r = data[1]; 281296465Sdelphij FP(r, l); 282296465Sdelphij data[0] = l; 283296465Sdelphij data[1] = r; 284296465Sdelphij} 28555714Skris 28655714Skris#ifndef DES_DEFAULT_OPTIONS 28755714Skris 288296465Sdelphij# if !defined(OPENSSL_FIPS_DES_ASM) 289194206Ssimon 290296465Sdelphij# undef CBC_ENC_C__DONT_UPDATE_IV 291296465Sdelphij# include "ncbc_enc.c" /* DES_ncbc_encrypt */ 29255714Skris 293109998Smarkmvoid DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output, 294296465Sdelphij long length, DES_key_schedule *ks1, 295296465Sdelphij DES_key_schedule *ks2, DES_key_schedule *ks3, 296296465Sdelphij DES_cblock *ivec, int enc) 297296465Sdelphij{ 298296465Sdelphij register DES_LONG tin0, tin1; 299296465Sdelphij register DES_LONG tout0, tout1, xor0, xor1; 300296465Sdelphij register const unsigned char *in; 301296465Sdelphij unsigned char *out; 302296465Sdelphij register long l = length; 303296465Sdelphij DES_LONG tin[2]; 304296465Sdelphij unsigned char *iv; 30555714Skris 306296465Sdelphij in = input; 307296465Sdelphij out = output; 308296465Sdelphij iv = &(*ivec)[0]; 30955714Skris 310296465Sdelphij if (enc) { 311296465Sdelphij c2l(iv, tout0); 312296465Sdelphij c2l(iv, tout1); 313296465Sdelphij for (l -= 8; l >= 0; l -= 8) { 314296465Sdelphij c2l(in, tin0); 315296465Sdelphij c2l(in, tin1); 316296465Sdelphij tin0 ^= tout0; 317296465Sdelphij tin1 ^= tout1; 31855714Skris 319296465Sdelphij tin[0] = tin0; 320296465Sdelphij tin[1] = tin1; 321296465Sdelphij DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); 322296465Sdelphij tout0 = tin[0]; 323296465Sdelphij tout1 = tin[1]; 32455714Skris 325296465Sdelphij l2c(tout0, out); 326296465Sdelphij l2c(tout1, out); 327296465Sdelphij } 328296465Sdelphij if (l != -8) { 329296465Sdelphij c2ln(in, tin0, tin1, l + 8); 330296465Sdelphij tin0 ^= tout0; 331296465Sdelphij tin1 ^= tout1; 33255714Skris 333296465Sdelphij tin[0] = tin0; 334296465Sdelphij tin[1] = tin1; 335296465Sdelphij DES_encrypt3((DES_LONG *)tin, ks1, ks2, ks3); 336296465Sdelphij tout0 = tin[0]; 337296465Sdelphij tout1 = tin[1]; 33855714Skris 339296465Sdelphij l2c(tout0, out); 340296465Sdelphij l2c(tout1, out); 341296465Sdelphij } 342296465Sdelphij iv = &(*ivec)[0]; 343296465Sdelphij l2c(tout0, iv); 344296465Sdelphij l2c(tout1, iv); 345296465Sdelphij } else { 346296465Sdelphij register DES_LONG t0, t1; 34755714Skris 348296465Sdelphij c2l(iv, xor0); 349296465Sdelphij c2l(iv, xor1); 350296465Sdelphij for (l -= 8; l >= 0; l -= 8) { 351296465Sdelphij c2l(in, tin0); 352296465Sdelphij c2l(in, tin1); 35355714Skris 354296465Sdelphij t0 = tin0; 355296465Sdelphij t1 = tin1; 35655714Skris 357296465Sdelphij tin[0] = tin0; 358296465Sdelphij tin[1] = tin1; 359296465Sdelphij DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); 360296465Sdelphij tout0 = tin[0]; 361296465Sdelphij tout1 = tin[1]; 36255714Skris 363296465Sdelphij tout0 ^= xor0; 364296465Sdelphij tout1 ^= xor1; 365296465Sdelphij l2c(tout0, out); 366296465Sdelphij l2c(tout1, out); 367296465Sdelphij xor0 = t0; 368296465Sdelphij xor1 = t1; 369296465Sdelphij } 370296465Sdelphij if (l != -8) { 371296465Sdelphij c2l(in, tin0); 372296465Sdelphij c2l(in, tin1); 37355714Skris 374296465Sdelphij t0 = tin0; 375296465Sdelphij t1 = tin1; 37655714Skris 377296465Sdelphij tin[0] = tin0; 378296465Sdelphij tin[1] = tin1; 379296465Sdelphij DES_decrypt3((DES_LONG *)tin, ks1, ks2, ks3); 380296465Sdelphij tout0 = tin[0]; 381296465Sdelphij tout1 = tin[1]; 38255714Skris 383296465Sdelphij tout0 ^= xor0; 384296465Sdelphij tout1 ^= xor1; 385296465Sdelphij l2cn(tout0, tout1, out, l + 8); 386296465Sdelphij xor0 = t0; 387296465Sdelphij xor1 = t1; 388296465Sdelphij } 389194206Ssimon 390296465Sdelphij iv = &(*ivec)[0]; 391296465Sdelphij l2c(xor0, iv); 392296465Sdelphij l2c(xor1, iv); 393296465Sdelphij } 394296465Sdelphij tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; 395296465Sdelphij tin[0] = tin[1] = 0; 396296465Sdelphij} 397296465Sdelphij 398296465Sdelphij# endif 399296465Sdelphij 400296465Sdelphij#endif /* DES_DEFAULT_OPTIONS */ 401