1/* crypto/des/des_enc.c */ 2/* Copyright (C) 1995-1998 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#include "fips_des_locl.h" 60#include <openssl/fips.h> 61 62#ifdef OPENSSL_FIPS 63 64void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc) 65 { 66 register DES_LONG l,r,t,u; 67#ifdef DES_PTR 68 register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans; 69#endif 70#ifndef DES_UNROLL 71 register int i; 72#endif 73 register DES_LONG *s; 74 75 if(FIPS_selftest_failed()) 76 { 77 data[0]=data[1]=0; 78 return; 79 } 80 81 r=data[0]; 82 l=data[1]; 83 84 IP(r,l); 85 /* Things have been modified so that the initial rotate is 86 * done outside the loop. This required the 87 * DES_SPtrans values in sp.h to be rotated 1 bit to the right. 88 * One perl script later and things have a 5% speed up on a sparc2. 89 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> 90 * for pointing this out. */ 91 /* clear the top bits on machines with 8byte longs */ 92 /* shift left by 2 */ 93 r=ROTATE(r,29)&0xffffffffL; 94 l=ROTATE(l,29)&0xffffffffL; 95 96 s=ks->ks->deslong; 97 /* I don't know if it is worth the effort of loop unrolling the 98 * inner loop */ 99 if (enc) 100 { 101#ifdef DES_UNROLL 102 D_ENCRYPT(l,r, 0); /* 1 */ 103 D_ENCRYPT(r,l, 2); /* 2 */ 104 D_ENCRYPT(l,r, 4); /* 3 */ 105 D_ENCRYPT(r,l, 6); /* 4 */ 106 D_ENCRYPT(l,r, 8); /* 5 */ 107 D_ENCRYPT(r,l,10); /* 6 */ 108 D_ENCRYPT(l,r,12); /* 7 */ 109 D_ENCRYPT(r,l,14); /* 8 */ 110 D_ENCRYPT(l,r,16); /* 9 */ 111 D_ENCRYPT(r,l,18); /* 10 */ 112 D_ENCRYPT(l,r,20); /* 11 */ 113 D_ENCRYPT(r,l,22); /* 12 */ 114 D_ENCRYPT(l,r,24); /* 13 */ 115 D_ENCRYPT(r,l,26); /* 14 */ 116 D_ENCRYPT(l,r,28); /* 15 */ 117 D_ENCRYPT(r,l,30); /* 16 */ 118#else 119 for (i=0; i<32; i+=8) 120 { 121 D_ENCRYPT(l,r,i+0); /* 1 */ 122 D_ENCRYPT(r,l,i+2); /* 2 */ 123 D_ENCRYPT(l,r,i+4); /* 3 */ 124 D_ENCRYPT(r,l,i+6); /* 4 */ 125 } 126#endif 127 } 128 else 129 { 130#ifdef DES_UNROLL 131 D_ENCRYPT(l,r,30); /* 16 */ 132 D_ENCRYPT(r,l,28); /* 15 */ 133 D_ENCRYPT(l,r,26); /* 14 */ 134 D_ENCRYPT(r,l,24); /* 13 */ 135 D_ENCRYPT(l,r,22); /* 12 */ 136 D_ENCRYPT(r,l,20); /* 11 */ 137 D_ENCRYPT(l,r,18); /* 10 */ 138 D_ENCRYPT(r,l,16); /* 9 */ 139 D_ENCRYPT(l,r,14); /* 8 */ 140 D_ENCRYPT(r,l,12); /* 7 */ 141 D_ENCRYPT(l,r,10); /* 6 */ 142 D_ENCRYPT(r,l, 8); /* 5 */ 143 D_ENCRYPT(l,r, 6); /* 4 */ 144 D_ENCRYPT(r,l, 4); /* 3 */ 145 D_ENCRYPT(l,r, 2); /* 2 */ 146 D_ENCRYPT(r,l, 0); /* 1 */ 147#else 148 for (i=30; i>0; i-=8) 149 { 150 D_ENCRYPT(l,r,i-0); /* 16 */ 151 D_ENCRYPT(r,l,i-2); /* 15 */ 152 D_ENCRYPT(l,r,i-4); /* 14 */ 153 D_ENCRYPT(r,l,i-6); /* 13 */ 154 } 155#endif 156 } 157 158 /* rotate and clear the top bits on machines with 8byte longs */ 159 l=ROTATE(l,3)&0xffffffffL; 160 r=ROTATE(r,3)&0xffffffffL; 161 162 FP(r,l); 163 data[0]=l; 164 data[1]=r; 165 l=r=t=u=0; 166 } 167 168void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc) 169 { 170 register DES_LONG l,r,t,u; 171#ifdef DES_PTR 172 register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans; 173#endif 174#ifndef DES_UNROLL 175 register int i; 176#endif 177 register DES_LONG *s; 178 179 if(FIPS_selftest_failed()) 180 { 181 data[0]=data[1]=0; 182 return; 183 } 184 185 r=data[0]; 186 l=data[1]; 187 188 /* Things have been modified so that the initial rotate is 189 * done outside the loop. This required the 190 * DES_SPtrans values in sp.h to be rotated 1 bit to the right. 191 * One perl script later and things have a 5% speed up on a sparc2. 192 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> 193 * for pointing this out. */ 194 /* clear the top bits on machines with 8byte longs */ 195 r=ROTATE(r,29)&0xffffffffL; 196 l=ROTATE(l,29)&0xffffffffL; 197 198 s=ks->ks->deslong; 199 /* I don't know if it is worth the effort of loop unrolling the 200 * inner loop */ 201 if (enc) 202 { 203#ifdef DES_UNROLL 204 D_ENCRYPT(l,r, 0); /* 1 */ 205 D_ENCRYPT(r,l, 2); /* 2 */ 206 D_ENCRYPT(l,r, 4); /* 3 */ 207 D_ENCRYPT(r,l, 6); /* 4 */ 208 D_ENCRYPT(l,r, 8); /* 5 */ 209 D_ENCRYPT(r,l,10); /* 6 */ 210 D_ENCRYPT(l,r,12); /* 7 */ 211 D_ENCRYPT(r,l,14); /* 8 */ 212 D_ENCRYPT(l,r,16); /* 9 */ 213 D_ENCRYPT(r,l,18); /* 10 */ 214 D_ENCRYPT(l,r,20); /* 11 */ 215 D_ENCRYPT(r,l,22); /* 12 */ 216 D_ENCRYPT(l,r,24); /* 13 */ 217 D_ENCRYPT(r,l,26); /* 14 */ 218 D_ENCRYPT(l,r,28); /* 15 */ 219 D_ENCRYPT(r,l,30); /* 16 */ 220#else 221 for (i=0; i<32; i+=8) 222 { 223 D_ENCRYPT(l,r,i+0); /* 1 */ 224 D_ENCRYPT(r,l,i+2); /* 2 */ 225 D_ENCRYPT(l,r,i+4); /* 3 */ 226 D_ENCRYPT(r,l,i+6); /* 4 */ 227 } 228#endif 229 } 230 else 231 { 232#ifdef DES_UNROLL 233 D_ENCRYPT(l,r,30); /* 16 */ 234 D_ENCRYPT(r,l,28); /* 15 */ 235 D_ENCRYPT(l,r,26); /* 14 */ 236 D_ENCRYPT(r,l,24); /* 13 */ 237 D_ENCRYPT(l,r,22); /* 12 */ 238 D_ENCRYPT(r,l,20); /* 11 */ 239 D_ENCRYPT(l,r,18); /* 10 */ 240 D_ENCRYPT(r,l,16); /* 9 */ 241 D_ENCRYPT(l,r,14); /* 8 */ 242 D_ENCRYPT(r,l,12); /* 7 */ 243 D_ENCRYPT(l,r,10); /* 6 */ 244 D_ENCRYPT(r,l, 8); /* 5 */ 245 D_ENCRYPT(l,r, 6); /* 4 */ 246 D_ENCRYPT(r,l, 4); /* 3 */ 247 D_ENCRYPT(l,r, 2); /* 2 */ 248 D_ENCRYPT(r,l, 0); /* 1 */ 249#else 250 for (i=30; i>0; i-=8) 251 { 252 D_ENCRYPT(l,r,i-0); /* 16 */ 253 D_ENCRYPT(r,l,i-2); /* 15 */ 254 D_ENCRYPT(l,r,i-4); /* 14 */ 255 D_ENCRYPT(r,l,i-6); /* 13 */ 256 } 257#endif 258 } 259 /* rotate and clear the top bits on machines with 8byte longs */ 260 data[0]=ROTATE(l,3)&0xffffffffL; 261 data[1]=ROTATE(r,3)&0xffffffffL; 262 l=r=t=u=0; 263 } 264 265void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1, 266 DES_key_schedule *ks2, DES_key_schedule *ks3) 267 { 268 register DES_LONG l,r; 269 270 l=data[0]; 271 r=data[1]; 272 IP(l,r); 273 data[0]=l; 274 data[1]=r; 275 DES_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT); 276 DES_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT); 277 DES_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT); 278 l=data[0]; 279 r=data[1]; 280 FP(r,l); 281 data[0]=l; 282 data[1]=r; 283 } 284 285void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1, 286 DES_key_schedule *ks2, DES_key_schedule *ks3) 287 { 288 register DES_LONG l,r; 289 290 l=data[0]; 291 r=data[1]; 292 IP(l,r); 293 data[0]=l; 294 data[1]=r; 295 DES_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT); 296 DES_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT); 297 DES_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT); 298 l=data[0]; 299 r=data[1]; 300 FP(r,l); 301 data[0]=l; 302 data[1]=r; 303 } 304 305#else /* ndef OPENSSL_FIPS */ 306 307static void *dummy=&dummy; 308 309#endif /* ndef OPENSSL_FIPS */ 310 311