linux/crypto/ciphers/des/des_locl.h

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