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| author | cvs2svn <admin@example.com> | 1998-10-19 21:47:12 +0000 |
|---|---|---|
| committer | cvs2svn <admin@example.com> | 1998-10-19 21:47:12 +0000 |
| commit | 5170039cf1df2194faa85741f0733977525cd5c0 (patch) | |
| tree | c667406046ddb1efca5ed4316b02e43494241660 /src/lib/libcrypto/des/des_locl.org | |
| parent | 536c76cbb863bab152f19842ab88772c01e922c7 (diff) | |
| download | openbsd-OPENBSD_2_4_BASE.tar.gz openbsd-OPENBSD_2_4_BASE.tar.bz2 openbsd-OPENBSD_2_4_BASE.zip | |
This commit was manufactured by cvs2git to create tag 'OPENBSD_2_4_BASE'.OPENBSD_2_4_BASE
Diffstat (limited to 'src/lib/libcrypto/des/des_locl.org')
| -rw-r--r-- | src/lib/libcrypto/des/des_locl.org | 516 |
1 files changed, 516 insertions, 0 deletions
diff --git a/src/lib/libcrypto/des/des_locl.org b/src/lib/libcrypto/des/des_locl.org new file mode 100644 index 0000000000..e2e503cbed --- /dev/null +++ b/src/lib/libcrypto/des/des_locl.org | |||
| @@ -0,0 +1,516 @@ | |||
| 1 | /* crypto/des/des_locl.org */ | ||
| 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 | /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING | ||
| 60 | * | ||
| 61 | * Always modify des_locl.org since des_locl.h is automatically generated from | ||
| 62 | * it during SSLeay configuration. | ||
| 63 | * | ||
| 64 | * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING | ||
| 65 | */ | ||
| 66 | |||
| 67 | #ifndef HEADER_DES_LOCL_H | ||
| 68 | #define HEADER_DES_LOCL_H | ||
| 69 | |||
| 70 | #if defined(WIN32) || defined(WIN16) | ||
| 71 | #ifndef MSDOS | ||
| 72 | #define MSDOS | ||
| 73 | #endif | ||
| 74 | #endif | ||
| 75 | |||
| 76 | #include <stdio.h> | ||
| 77 | #include <stdlib.h> | ||
| 78 | #ifndef MSDOS | ||
| 79 | #include <unistd.h> | ||
| 80 | #endif | ||
| 81 | #include "des.h" | ||
| 82 | |||
| 83 | #ifndef DES_DEFAULT_OPTIONS | ||
| 84 | /* the following is tweaked from a config script, that is why it is a | ||
| 85 | * protected undef/define */ | ||
| 86 | #ifndef DES_PTR | ||
| 87 | #undef DES_PTR | ||
| 88 | #endif | ||
| 89 | |||
| 90 | /* This helps C compiler generate the correct code for multiple functional | ||
| 91 | * units. It reduces register dependancies at the expense of 2 more | ||
| 92 | * registers */ | ||
| 93 | #ifndef DES_RISC1 | ||
| 94 | #undef DES_RISC1 | ||
| 95 | #endif | ||
| 96 | |||
| 97 | #ifndef DES_RISC2 | ||
| 98 | #undef DES_RISC2 | ||
| 99 | #endif | ||
| 100 | |||
| 101 | #if defined(DES_RISC1) && defined(DES_RISC2) | ||
| 102 | YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!! | ||
| 103 | #endif | ||
| 104 | |||
| 105 | /* Unroll the inner loop, this sometimes helps, sometimes hinders. | ||
| 106 | * Very mucy CPU dependant */ | ||
| 107 | #ifndef DES_UNROLL | ||
| 108 | #undef DES_UNROLL | ||
| 109 | #endif | ||
| 110 | |||
| 111 | /* These default values were supplied by | ||
| 112 | * Peter Gutman <pgut001@cs.auckland.ac.nz> | ||
| 113 | * They are only used if nothing else has been defined */ | ||
| 114 | #if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL) | ||
| 115 | /* Special defines which change the way the code is built depending on the | ||
| 116 | CPU and OS. For SGI machines you can use _MIPS_SZLONG (32 or 64) to find | ||
| 117 | even newer MIPS CPU's, but at the moment one size fits all for | ||
| 118 | optimization options. Older Sparc's work better with only UNROLL, but | ||
| 119 | there's no way to tell at compile time what it is you're running on */ | ||
| 120 | |||
| 121 | #if defined( sun ) /* Newer Sparc's */ | ||
| 122 | #define DES_PTR | ||
| 123 | #define DES_RISC1 | ||
| 124 | #define DES_UNROLL | ||
| 125 | #elif defined( __ultrix ) /* Older MIPS */ | ||
| 126 | #define DES_PTR | ||
| 127 | #define DES_RISC2 | ||
| 128 | #define DES_UNROLL | ||
| 129 | #elif defined( __osf1__ ) /* Alpha */ | ||
| 130 | #define DES_PTR | ||
| 131 | #define DES_RISC2 | ||
| 132 | #elif defined ( _AIX ) /* RS6000 */ | ||
| 133 | /* Unknown */ | ||
| 134 | #elif defined( __hpux ) /* HP-PA */ | ||
| 135 | /* Unknown */ | ||
| 136 | #elif defined( __aux ) /* 68K */ | ||
| 137 | /* Unknown */ | ||
| 138 | #elif defined( __dgux ) /* 88K (but P6 in latest boxes) */ | ||
| 139 | #define DES_UNROLL | ||
| 140 | #elif defined( __sgi ) /* Newer MIPS */ | ||
| 141 | #define DES_PTR | ||
| 142 | #define DES_RISC2 | ||
| 143 | #define DES_UNROLL | ||
| 144 | #elif defined( i386 ) /* x86 boxes, should be gcc */ | ||
| 145 | #define DES_PTR | ||
| 146 | #define DES_RISC1 | ||
| 147 | #define DES_UNROLL | ||
| 148 | #endif /* Systems-specific speed defines */ | ||
| 149 | #endif | ||
| 150 | |||
| 151 | #endif /* DES_DEFAULT_OPTIONS */ | ||
| 152 | |||
| 153 | #ifdef MSDOS /* Visual C++ 2.1 (Windows NT/95) */ | ||
| 154 | #include <stdlib.h> | ||
| 155 | #include <errno.h> | ||
| 156 | #include <time.h> | ||
| 157 | #include <io.h> | ||
| 158 | #ifndef RAND | ||
| 159 | #define RAND | ||
| 160 | #endif | ||
| 161 | #undef NOPROTO | ||
| 162 | #endif | ||
| 163 | |||
| 164 | #if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS) | ||
| 165 | #include <string.h> | ||
| 166 | #endif | ||
| 167 | |||
| 168 | #ifndef RAND | ||
| 169 | #define RAND | ||
| 170 | #endif | ||
| 171 | |||
| 172 | #ifdef linux | ||
| 173 | #undef RAND | ||
| 174 | #endif | ||
| 175 | |||
| 176 | #ifdef MSDOS | ||
| 177 | #define getpid() 2 | ||
| 178 | #define RAND | ||
| 179 | #undef NOPROTO | ||
| 180 | #endif | ||
| 181 | |||
| 182 | #if defined(NOCONST) | ||
| 183 | #define const | ||
| 184 | #endif | ||
| 185 | |||
| 186 | #ifdef __STDC__ | ||
| 187 | #undef NOPROTO | ||
| 188 | #endif | ||
| 189 | |||
| 190 | #ifdef RAND | ||
| 191 | #define srandom(s) srand(s) | ||
| 192 | #define random rand | ||
| 193 | #endif | ||
| 194 | |||
| 195 | #define ITERATIONS 16 | ||
| 196 | #define HALF_ITERATIONS 8 | ||
| 197 | |||
| 198 | /* used in des_read and des_write */ | ||
| 199 | #define MAXWRITE (1024*16) | ||
| 200 | #define BSIZE (MAXWRITE+4) | ||
| 201 | |||
| 202 | #define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ | ||
| 203 | l|=((DES_LONG)(*((c)++)))<< 8L, \ | ||
| 204 | l|=((DES_LONG)(*((c)++)))<<16L, \ | ||
| 205 | l|=((DES_LONG)(*((c)++)))<<24L) | ||
| 206 | |||
| 207 | /* NOTE - c is not incremented as per c2l */ | ||
| 208 | #define c2ln(c,l1,l2,n) { \ | ||
| 209 | c+=n; \ | ||
| 210 | l1=l2=0; \ | ||
| 211 | switch (n) { \ | ||
| 212 | case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \ | ||
| 213 | case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \ | ||
| 214 | case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \ | ||
| 215 | case 5: l2|=((DES_LONG)(*(--(c)))); \ | ||
| 216 | case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \ | ||
| 217 | case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \ | ||
| 218 | case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \ | ||
| 219 | case 1: l1|=((DES_LONG)(*(--(c)))); \ | ||
| 220 | } \ | ||
| 221 | } | ||
| 222 | |||
| 223 | #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | ||
| 224 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | ||
| 225 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | ||
| 226 | *((c)++)=(unsigned char)(((l)>>24L)&0xff)) | ||
| 227 | |||
| 228 | /* replacements for htonl and ntohl since I have no idea what to do | ||
| 229 | * when faced with machines with 8 byte longs. */ | ||
| 230 | #define HDRSIZE 4 | ||
| 231 | |||
| 232 | #define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \ | ||
| 233 | l|=((DES_LONG)(*((c)++)))<<16L, \ | ||
| 234 | l|=((DES_LONG)(*((c)++)))<< 8L, \ | ||
| 235 | l|=((DES_LONG)(*((c)++)))) | ||
| 236 | |||
| 237 | #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ | ||
| 238 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | ||
| 239 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | ||
| 240 | *((c)++)=(unsigned char)(((l) )&0xff)) | ||
| 241 | |||
| 242 | /* NOTE - c is not incremented as per l2c */ | ||
| 243 | #define l2cn(l1,l2,c,n) { \ | ||
| 244 | c+=n; \ | ||
| 245 | switch (n) { \ | ||
| 246 | case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ | ||
| 247 | case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ | ||
| 248 | case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ | ||
| 249 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ | ||
| 250 | case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ | ||
| 251 | case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ | ||
| 252 | case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ | ||
| 253 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ | ||
| 254 | } \ | ||
| 255 | } | ||
| 256 | |||
| 257 | #if defined(WIN32) | ||
| 258 | #define ROTATE(a,n) (_lrotr(a,n)) | ||
| 259 | #else | ||
| 260 | #define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n)))) | ||
| 261 | #endif | ||
| 262 | |||
| 263 | /* Don't worry about the LOAD_DATA() stuff, that is used by | ||
| 264 | * fcrypt() to add it's little bit to the front */ | ||
| 265 | |||
| 266 | #ifdef DES_FCRYPT | ||
| 267 | |||
| 268 | #define LOAD_DATA_tmp(R,S,u,t,E0,E1) \ | ||
| 269 | { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); } | ||
| 270 | |||
| 271 | #define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ | ||
| 272 | t=R^(R>>16L); \ | ||
| 273 | u=t&E0; t&=E1; \ | ||
| 274 | tmp=(u<<16); u^=R^s[S ]; u^=tmp; \ | ||
| 275 | tmp=(t<<16); t^=R^s[S+1]; t^=tmp | ||
| 276 | #else | ||
| 277 | #define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g) | ||
| 278 | #define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ | ||
| 279 | u=R^s[S ]; \ | ||
| 280 | t=R^s[S+1] | ||
| 281 | #endif | ||
| 282 | |||
| 283 | /* The changes to this macro may help or hinder, depending on the | ||
| 284 | * compiler and the achitecture. gcc2 always seems to do well :-). | ||
| 285 | * Inspired by Dana How <how@isl.stanford.edu> | ||
| 286 | * DO NOT use the alternative version on machines with 8 byte longs. | ||
| 287 | * It does not seem to work on the Alpha, even when DES_LONG is 4 | ||
| 288 | * bytes, probably an issue of accessing non-word aligned objects :-( */ | ||
| 289 | #ifdef DES_PTR | ||
| 290 | |||
| 291 | /* It recently occured to me that 0^0^0^0^0^0^0 == 0, so there | ||
| 292 | * is no reason to not xor all the sub items together. This potentially | ||
| 293 | * saves a register since things can be xored directly into L */ | ||
| 294 | |||
| 295 | #if defined(DES_RISC1) || defined(DES_RISC2) | ||
| 296 | #ifdef DES_RISC1 | ||
| 297 | #define D_ENCRYPT(LL,R,S) { \ | ||
| 298 | unsigned int u1,u2,u3; \ | ||
| 299 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | ||
| 300 | u2=(int)u>>8L; \ | ||
| 301 | u1=(int)u&0xfc; \ | ||
| 302 | u2&=0xfc; \ | ||
| 303 | t=ROTATE(t,4); \ | ||
| 304 | u>>=16L; \ | ||
| 305 | LL^= *(DES_LONG *)((unsigned char *)des_SP +u1); \ | ||
| 306 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \ | ||
| 307 | u3=(int)(u>>8L); \ | ||
| 308 | u1=(int)u&0xfc; \ | ||
| 309 | u3&=0xfc; \ | ||
| 310 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+u1); \ | ||
| 311 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+u3); \ | ||
| 312 | u2=(int)t>>8L; \ | ||
| 313 | u1=(int)t&0xfc; \ | ||
| 314 | u2&=0xfc; \ | ||
| 315 | t>>=16L; \ | ||
| 316 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \ | ||
| 317 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \ | ||
| 318 | u3=(int)t>>8L; \ | ||
| 319 | u1=(int)t&0xfc; \ | ||
| 320 | u3&=0xfc; \ | ||
| 321 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+u1); \ | ||
| 322 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+u3); } | ||
| 323 | #endif | ||
| 324 | #ifdef DES_RISC2 | ||
| 325 | #define D_ENCRYPT(LL,R,S) { \ | ||
| 326 | unsigned int u1,u2,s1,s2; \ | ||
| 327 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | ||
| 328 | u2=(int)u>>8L; \ | ||
| 329 | u1=(int)u&0xfc; \ | ||
| 330 | u2&=0xfc; \ | ||
| 331 | t=ROTATE(t,4); \ | ||
| 332 | LL^= *(DES_LONG *)((unsigned char *)des_SP +u1); \ | ||
| 333 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \ | ||
| 334 | s1=(int)(u>>16L); \ | ||
| 335 | s2=(int)(u>>24L); \ | ||
| 336 | s1&=0xfc; \ | ||
| 337 | s2&=0xfc; \ | ||
| 338 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+s1); \ | ||
| 339 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+s2); \ | ||
| 340 | u2=(int)t>>8L; \ | ||
| 341 | u1=(int)t&0xfc; \ | ||
| 342 | u2&=0xfc; \ | ||
| 343 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \ | ||
| 344 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \ | ||
| 345 | s1=(int)(t>>16L); \ | ||
| 346 | s2=(int)(t>>24L); \ | ||
| 347 | s1&=0xfc; \ | ||
| 348 | s2&=0xfc; \ | ||
| 349 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+s1); \ | ||
| 350 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+s2); } | ||
| 351 | #endif | ||
| 352 | #else | ||
| 353 | #define D_ENCRYPT(LL,R,S) { \ | ||
| 354 | LOAD_DATA_tmp(R,S,u,t,E0,E1); \ | ||
| 355 | t=ROTATE(t,4); \ | ||
| 356 | LL^= \ | ||
| 357 | *(DES_LONG *)((unsigned char *)des_SP +((u )&0xfc))^ \ | ||
| 358 | *(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8L)&0xfc))^ \ | ||
| 359 | *(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16L)&0xfc))^ \ | ||
| 360 | *(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24L)&0xfc))^ \ | ||
| 361 | *(DES_LONG *)((unsigned char *)des_SP+0x100+((t )&0xfc))^ \ | ||
| 362 | *(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8L)&0xfc))^ \ | ||
| 363 | *(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16L)&0xfc))^ \ | ||
| 364 | *(DES_LONG *)((unsigned char *)des_SP+0x700+((t>>24L)&0xfc)); } | ||
| 365 | #endif | ||
| 366 | |||
| 367 | #else /* original version */ | ||
| 368 | |||
| 369 | #if defined(DES_RISC1) || defined(DES_RISC2) | ||
| 370 | #ifdef DES_RISC1 | ||
| 371 | #define D_ENCRYPT(LL,R,S) {\ | ||
| 372 | unsigned int u1,u2,u3; \ | ||
| 373 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | ||
| 374 | u>>=2L; \ | ||
| 375 | t=ROTATE(t,6); \ | ||
| 376 | u2=(int)u>>8L; \ | ||
| 377 | u1=(int)u&0x3f; \ | ||
| 378 | u2&=0x3f; \ | ||
| 379 | u>>=16L; \ | ||
| 380 | LL^=des_SPtrans[0][u1]; \ | ||
| 381 | LL^=des_SPtrans[2][u2]; \ | ||
| 382 | u3=(int)u>>8L; \ | ||
| 383 | u1=(int)u&0x3f; \ | ||
| 384 | u3&=0x3f; \ | ||
| 385 | LL^=des_SPtrans[4][u1]; \ | ||
| 386 | LL^=des_SPtrans[6][u3]; \ | ||
| 387 | u2=(int)t>>8L; \ | ||
| 388 | u1=(int)t&0x3f; \ | ||
| 389 | u2&=0x3f; \ | ||
| 390 | t>>=16L; \ | ||
| 391 | LL^=des_SPtrans[1][u1]; \ | ||
| 392 | LL^=des_SPtrans[3][u2]; \ | ||
| 393 | u3=(int)t>>8L; \ | ||
| 394 | u1=(int)t&0x3f; \ | ||
| 395 | u3&=0x3f; \ | ||
| 396 | LL^=des_SPtrans[5][u1]; \ | ||
| 397 | LL^=des_SPtrans[7][u3]; } | ||
| 398 | #endif | ||
| 399 | #ifdef DES_RISC2 | ||
| 400 | #define D_ENCRYPT(LL,R,S) {\ | ||
| 401 | unsigned int u1,u2,s1,s2; \ | ||
| 402 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | ||
| 403 | u>>=2L; \ | ||
| 404 | t=ROTATE(t,6); \ | ||
| 405 | u2=(int)u>>8L; \ | ||
| 406 | u1=(int)u&0x3f; \ | ||
| 407 | u2&=0x3f; \ | ||
| 408 | LL^=des_SPtrans[0][u1]; \ | ||
| 409 | LL^=des_SPtrans[2][u2]; \ | ||
| 410 | s1=(int)u>>16L; \ | ||
| 411 | s2=(int)u>>24L; \ | ||
| 412 | s1&=0x3f; \ | ||
| 413 | s2&=0x3f; \ | ||
| 414 | LL^=des_SPtrans[4][s1]; \ | ||
| 415 | LL^=des_SPtrans[6][s2]; \ | ||
| 416 | u2=(int)t>>8L; \ | ||
| 417 | u1=(int)t&0x3f; \ | ||
| 418 | u2&=0x3f; \ | ||
| 419 | LL^=des_SPtrans[1][u1]; \ | ||
| 420 | LL^=des_SPtrans[3][u2]; \ | ||
| 421 | s1=(int)t>>16; \ | ||
| 422 | s2=(int)t>>24L; \ | ||
| 423 | s1&=0x3f; \ | ||
| 424 | s2&=0x3f; \ | ||
| 425 | LL^=des_SPtrans[5][s1]; \ | ||
| 426 | LL^=des_SPtrans[7][s2]; } | ||
| 427 | #endif | ||
| 428 | |||
| 429 | #else | ||
| 430 | |||
| 431 | #define D_ENCRYPT(LL,R,S) {\ | ||
| 432 | LOAD_DATA_tmp(R,S,u,t,E0,E1); \ | ||
| 433 | t=ROTATE(t,4); \ | ||
| 434 | LL^=\ | ||
| 435 | des_SPtrans[0][(u>> 2L)&0x3f]^ \ | ||
| 436 | des_SPtrans[2][(u>>10L)&0x3f]^ \ | ||
| 437 | des_SPtrans[4][(u>>18L)&0x3f]^ \ | ||
| 438 | des_SPtrans[6][(u>>26L)&0x3f]^ \ | ||
| 439 | des_SPtrans[1][(t>> 2L)&0x3f]^ \ | ||
| 440 | des_SPtrans[3][(t>>10L)&0x3f]^ \ | ||
| 441 | des_SPtrans[5][(t>>18L)&0x3f]^ \ | ||
| 442 | des_SPtrans[7][(t>>26L)&0x3f]; } | ||
| 443 | #endif | ||
| 444 | #endif | ||
| 445 | |||
| 446 | /* IP and FP | ||
| 447 | * The problem is more of a geometric problem that random bit fiddling. | ||
| 448 | 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6 | ||
| 449 | 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4 | ||
| 450 | 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2 | ||
| 451 | 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0 | ||
| 452 | |||
| 453 | 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7 | ||
| 454 | 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5 | ||
| 455 | 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3 | ||
| 456 | 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1 | ||
| 457 | |||
| 458 | The output has been subject to swaps of the form | ||
| 459 | 0 1 -> 3 1 but the odd and even bits have been put into | ||
| 460 | 2 3 2 0 | ||
| 461 | different words. The main trick is to remember that | ||
| 462 | t=((l>>size)^r)&(mask); | ||
| 463 | r^=t; | ||
| 464 | l^=(t<<size); | ||
| 465 | can be used to swap and move bits between words. | ||
| 466 | |||
| 467 | So l = 0 1 2 3 r = 16 17 18 19 | ||
| 468 | 4 5 6 7 20 21 22 23 | ||
| 469 | 8 9 10 11 24 25 26 27 | ||
| 470 | 12 13 14 15 28 29 30 31 | ||
| 471 | becomes (for size == 2 and mask == 0x3333) | ||
| 472 | t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19 | ||
| 473 | 6^20 7^21 -- -- 4 5 20 21 6 7 22 23 | ||
| 474 | 10^24 11^25 -- -- 8 9 24 25 10 11 24 25 | ||
| 475 | 14^28 15^29 -- -- 12 13 28 29 14 15 28 29 | ||
| 476 | |||
| 477 | Thanks for hints from Richard Outerbridge - he told me IP&FP | ||
| 478 | could be done in 15 xor, 10 shifts and 5 ands. | ||
| 479 | When I finally started to think of the problem in 2D | ||
| 480 | I first got ~42 operations without xors. When I remembered | ||
| 481 | how to use xors :-) I got it to its final state. | ||
| 482 | */ | ||
| 483 | #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ | ||
| 484 | (b)^=(t),\ | ||
| 485 | (a)^=((t)<<(n))) | ||
| 486 | |||
| 487 | #define IP(l,r) \ | ||
| 488 | { \ | ||
| 489 | register DES_LONG tt; \ | ||
| 490 | PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \ | ||
| 491 | PERM_OP(l,r,tt,16,0x0000ffffL); \ | ||
| 492 | PERM_OP(r,l,tt, 2,0x33333333L); \ | ||
| 493 | PERM_OP(l,r,tt, 8,0x00ff00ffL); \ | ||
| 494 | PERM_OP(r,l,tt, 1,0x55555555L); \ | ||
| 495 | } | ||
| 496 | |||
| 497 | #define FP(l,r) \ | ||
| 498 | { \ | ||
| 499 | register DES_LONG tt; \ | ||
| 500 | PERM_OP(l,r,tt, 1,0x55555555L); \ | ||
| 501 | PERM_OP(r,l,tt, 8,0x00ff00ffL); \ | ||
| 502 | PERM_OP(l,r,tt, 2,0x33333333L); \ | ||
| 503 | PERM_OP(r,l,tt,16,0x0000ffffL); \ | ||
| 504 | PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \ | ||
| 505 | } | ||
| 506 | |||
| 507 | extern const DES_LONG des_SPtrans[8][64]; | ||
| 508 | |||
| 509 | #ifndef NOPROTO | ||
| 510 | void fcrypt_body(DES_LONG *out,des_key_schedule ks, | ||
| 511 | DES_LONG Eswap0, DES_LONG Eswap1); | ||
| 512 | #else | ||
| 513 | void fcrypt_body(); | ||
| 514 | #endif | ||
| 515 | |||
| 516 | #endif | ||
