projects / thirdparty / strongswan.git / blame
| Commit | Line | Data |
|---|---|---|
| 7b767025 TB |
1 | /* |
| 2 | * Copyright (C) 2009 Tobias Brunner | |
| 3 | * Copyright (C) 2006 Martin Willi | |
| 462129d3 MW |
4 | * Hochschule fuer Technik Rapperswil |
| 5 | * | |
| 6 | * Derived from Plutos DES library by Eric Young. | |
| 7 | * | |
| 8 | * Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) | |
| 9 | * All rights reserved. | |
| 10 | * | |
| 11 | * This package is an SSL implementation written | |
| 12 | * by Eric Young (eay@cryptsoft.com). | |
| 13 | * The implementation was written so as to conform with Netscapes SSL. | |
| 7daf5226 | 14 | * |
| 462129d3 | 15 | * This library is free for commercial and non-commercial use as long as |
| 2db6d5b8 | 16 | * the following conditions are adhered to. |
| 7daf5226 | 17 | * |
| 462129d3 MW |
18 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 19 | * the code are not to be removed. | |
| 20 | * If this package is used in a product, Eric Young should be given attribution | |
| 21 | * as the author of the parts of the library used. | |
| 22 | * This can be in the form of a textual message at program startup or | |
| 23 | * in documentation (online or textual) provided with the package. | |
| 7daf5226 | 24 | * |
| 462129d3 MW |
25 | * Redistribution and use in source and binary forms, with or without |
| 26 | * modification, are permitted provided that the following conditions | |
| 27 | * are met: | |
| 28 | * 1. Redistributions of source code must retain the copyright | |
| 29 | * notice, this list of conditions and the following disclaimer. | |
| 30 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 31 | * notice, this list of conditions and the following disclaimer in the | |
| 32 | * documentation and/or other materials provided with the distribution. | |
| 33 | * 3. All advertising materials mentioning features or use of this software | |
| 34 | * must display the following acknowledgement: | |
| 35 | * "This product includes cryptographic software written by | |
| 36 | * Eric Young (eay@cryptsoft.com)" | |
| 2db6d5b8 | 37 | * The word 'cryptographic' can be left out if the routines from the library |
| 462129d3 | 38 | * being used are not cryptographic related :-). |
| 7daf5226 | 39 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 462129d3 MW |
40 | * the apps directory (application code) you must include an acknowledgement: |
| 41 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 7daf5226 | 42 | * |
| 462129d3 MW |
43 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 44 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 45 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 46 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 47 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 48 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 49 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 50 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 51 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 52 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 53 | * SUCH DAMAGE. | |
| 54 | * | |
| 55 | * The licence and distribution terms for any publically available version or | |
| 56 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 57 | * copied and put under another distribution licence | |
| 58 | * [including the GNU Public Licence.] | |
| 59 | */ | |
| 60 | ||
| 61 | #include "des_crypter.h" | |
| 62 | ||
| b5fd65e9 | 63 | typedef u_char des_cblock[DES_BLOCK_SIZE]; |
| 462129d3 MW |
64 | |
| 65 | typedef struct des_ks_struct { | |
| 66 | des_cblock _; | |
| 67 | } des_key_schedule[16]; | |
| 68 | ||
| 69 | ||
| 70 | typedef struct private_des_crypter_t private_des_crypter_t; | |
| 71 | ||
| 72 | /** | |
| 73 | * Private data for des_crypter_t | |
| 74 | */ | |
| 75 | struct private_des_crypter_t { | |
| 7daf5226 | 76 | |
| 462129d3 MW |
77 | /** |
| 78 | * Public part of this class. | |
| 79 | */ | |
| 80 | des_crypter_t public; | |
| 7daf5226 | 81 | |
| 462129d3 | 82 | /** |
| f3bb1bd0 | 83 | * Key size, depends on algorithm... |
| 462129d3 MW |
84 | */ |
| 85 | size_t key_size; | |
| 7daf5226 | 86 | |
| 462129d3 MW |
87 | union { |
| 88 | /** key schedule for single des */ | |
| 89 | des_key_schedule ks; | |
| 90 | /** key schedule for 3des */ | |
| 91 | des_key_schedule ks3[3]; | |
| 92 | }; | |
| 93 | }; | |
| 94 | ||
| 95 | ||
| 96 | #define DES_ENCRYPT 1 | |
| 97 | #define DES_DECRYPT 0 | |
| 98 | ||
| b12c53ce | 99 | #define DES_LONG uint32_t |
| 462129d3 MW |
100 | |
| 101 | #if defined(WIN32) || defined(WIN16) | |
| 102 | #ifndef MSDOS | |
| 103 | #define MSDOS | |
| 104 | #endif | |
| 105 | #endif | |
| 106 | ||
| 107 | #ifndef DES_DEFAULT_OPTIONS | |
| 108 | /* the following is tweaked from a config script, that is why it is a | |
| 109 | * protected undef/define */ | |
| 110 | #ifndef DES_PTR | |
| 111 | #define DES_PTR | |
| 112 | #endif | |
| 113 | ||
| 114 | /* This helps C compiler generate the correct code for multiple functional | |
| 7a1fed28 | 115 | * units. It reduces register dependencies at the expense of 2 more |
| 462129d3 MW |
116 | * registers */ |
| 117 | #ifndef DES_RISC1 | |
| 118 | #define DES_RISC1 | |
| 119 | #endif | |
| 120 | ||
| 121 | #ifndef DES_RISC2 | |
| 122 | #undef DES_RISC2 | |
| 123 | #endif | |
| 124 | ||
| 125 | #if defined(DES_RISC1) && defined(DES_RISC2) | |
| 126 | YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!! | |
| 127 | #endif | |
| 128 | ||
| 129 | /* Unroll the inner loop, this sometimes helps, sometimes hinders. | |
| f3bb1bd0 | 130 | * Very much CPU dependent */ |
| 462129d3 MW |
131 | #ifndef DES_UNROLL |
| 132 | #define DES_UNROLL | |
| 133 | #endif | |
| 134 | ||
| 135 | /* These default values were supplied by | |
| 136 | * Peter Gutman <pgut001@cs.auckland.ac.nz> | |
| 137 | * They are only used if nothing else has been defined */ | |
| 138 | #if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL) | |
| 139 | /* Special defines which change the way the code is built depending on the | |
| 140 | CPU and OS. For SGI machines you can use _MIPS_SZLONG (32 or 64) to find | |
| 141 | even newer MIPS CPU's, but at the moment one size fits all for | |
| 142 | optimization options. Older Sparc's work better with only UNROLL, but | |
| 143 | there's no way to tell at compile time what it is you're running on */ | |
| 7daf5226 | 144 | |
| 462129d3 MW |
145 | #if defined( sun ) /* Newer Sparc's */ |
| 146 | #define DES_PTR | |
| 147 | #define DES_RISC1 | |
| 148 | #define DES_UNROLL | |
| 149 | #elif defined( __ultrix ) /* Older MIPS */ | |
| 150 | #define DES_PTR | |
| 151 | #define DES_RISC2 | |
| 152 | #define DES_UNROLL | |
| 153 | #elif defined( __osf1__ ) /* Alpha */ | |
| 154 | #define DES_PTR | |
| 155 | #define DES_RISC2 | |
| 156 | #elif defined ( _AIX ) /* RS6000 */ | |
| 157 | /* Unknown */ | |
| 158 | #elif defined( __hpux ) /* HP-PA */ | |
| 159 | /* Unknown */ | |
| 160 | #elif defined( __aux ) /* 68K */ | |
| 161 | /* Unknown */ | |
| 162 | #elif defined( __dgux ) /* 88K (but P6 in latest boxes) */ | |
| 163 | #define DES_UNROLL | |
| 164 | #elif defined( __sgi ) /* Newer MIPS */ | |
| 165 | #define DES_PTR | |
| 166 | #define DES_RISC2 | |
| 167 | #define DES_UNROLL | |
| 168 | #elif defined( i386 ) /* x86 boxes, should be gcc */ | |
| 169 | #define DES_PTR | |
| 170 | #define DES_RISC1 | |
| 171 | #define DES_UNROLL | |
| 172 | #endif /* Systems-specific speed defines */ | |
| 173 | #endif | |
| 174 | ||
| 175 | #endif /* DES_DEFAULT_OPTIONS */ | |
| 176 | ||
| 177 | #ifdef MSDOS /* Visual C++ 2.1 (Windows NT/95) */ | |
| 178 | #include <stdlib.h> | |
| 179 | #include <errno.h> | |
| 180 | #include <time.h> | |
| 181 | #include <io.h> | |
| 182 | #ifndef RAND | |
| 183 | #define RAND | |
| 184 | #endif | |
| 185 | #undef NOPROTO | |
| 186 | #endif | |
| 187 | ||
| 188 | #if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS) | |
| 189 | #ifndef __KERNEL__ | |
| 190 | #include <string.h> | |
| 191 | #else | |
| 192 | #include <linux/string.h> | |
| 193 | #endif | |
| 194 | #endif | |
| 195 | ||
| 196 | #ifndef RAND | |
| 197 | #define RAND | |
| 198 | #endif | |
| 199 | ||
| 200 | #ifdef linux | |
| 201 | #undef RAND | |
| 202 | #endif | |
| 203 | ||
| 204 | #ifdef MSDOS | |
| 205 | #define getpid() 2 | |
| 206 | #define RAND | |
| 207 | #undef NOPROTO | |
| 208 | #endif | |
| 209 | ||
| 210 | #if defined(NOCONST) | |
| 211 | #define const | |
| 212 | #endif | |
| 213 | ||
| 214 | #ifdef __STDC__ | |
| 215 | #undef NOPROTO | |
| 216 | #endif | |
| 217 | ||
| 218 | #ifdef RAND | |
| 219 | #define srandom(s) srand(s) | |
| 220 | #define random rand | |
| 221 | #endif | |
| 222 | ||
| 223 | #define ITERATIONS 16 | |
| 224 | #define HALF_ITERATIONS 8 | |
| 225 | ||
| 226 | /* used in des_read and des_write */ | |
| 227 | #define MAXWRITE (1024*16) | |
| 228 | #define BSIZE (MAXWRITE+4) | |
| 229 | ||
| 230 | #define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \ | |
| 231 | l|=((DES_LONG)(*((c)++)))<< 8L, \ | |
| 232 | l|=((DES_LONG)(*((c)++)))<<16L, \ | |
| 233 | l|=((DES_LONG)(*((c)++)))<<24L) | |
| 234 | ||
| 235 | /* NOTE - c is not incremented as per c2l */ | |
| 236 | #define c2ln(c,l1,l2,n) { \ | |
| 237 | c+=n; \ | |
| 238 | l1=l2=0; \ | |
| 239 | switch (n) { \ | |
| 240 | case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \ | |
| 241 | case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \ | |
| 242 | case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \ | |
| 243 | case 5: l2|=((DES_LONG)(*(--(c)))); \ | |
| 244 | case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \ | |
| 245 | case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \ | |
| 246 | case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \ | |
| 247 | case 1: l1|=((DES_LONG)(*(--(c)))); \ | |
| 248 | } \ | |
| 249 | } | |
| 250 | ||
| 251 | #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ | |
| 252 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | |
| 253 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | |
| 254 | *((c)++)=(unsigned char)(((l)>>24L)&0xff)) | |
| 255 | ||
| 256 | /* replacements for htonl and ntohl since I have no idea what to do | |
| 257 | * when faced with machines with 8 byte longs. */ | |
| 258 | #define HDRSIZE 4 | |
| 259 | ||
| 260 | #define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \ | |
| 261 | l|=((DES_LONG)(*((c)++)))<<16L, \ | |
| 262 | l|=((DES_LONG)(*((c)++)))<< 8L, \ | |
| 263 | l|=((DES_LONG)(*((c)++)))) | |
| 264 | ||
| 265 | #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ | |
| 266 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ | |
| 267 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ | |
| 268 | *((c)++)=(unsigned char)(((l) )&0xff)) | |
| 269 | ||
| 270 | /* NOTE - c is not incremented as per l2c */ | |
| 271 | #define l2cn(l1,l2,c,n) { \ | |
| 272 | c+=n; \ | |
| 273 | switch (n) { \ | |
| 274 | case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ | |
| 275 | case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ | |
| 276 | case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ | |
| 277 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ | |
| 278 | case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ | |
| 279 | case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ | |
| 280 | case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ | |
| 281 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ | |
| 282 | } \ | |
| 283 | } | |
| 284 | ||
| 285 | #if defined(WIN32) | |
| 286 | #define ROTATE(a,n) (_lrotr(a,n)) | |
| 287 | #else | |
| 288 | #define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n)))) | |
| 289 | #endif | |
| 290 | ||
| 291 | /* Don't worry about the LOAD_DATA() stuff, that is used by | |
| 292 | * fcrypt() to add it's little bit to the front */ | |
| 293 | ||
| 294 | #ifdef DES_FCRYPT | |
| 295 | ||
| 296 | #define LOAD_DATA_tmp(R,S,u,t,E0,E1) \ | |
| 297 | { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); } | |
| 298 | ||
| 299 | #define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ | |
| 300 | t=R^(R>>16L); \ | |
| 301 | u=t&E0; t&=E1; \ | |
| 302 | tmp=(u<<16); u^=R^s[S ]; u^=tmp; \ | |
| 303 | tmp=(t<<16); t^=R^s[S+1]; t^=tmp | |
| 304 | #else | |
| 305 | #define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g) | |
| 306 | #define LOAD_DATA(R,S,u,t,E0,E1,tmp) \ | |
| 307 | u=R^s[S ]; \ | |
| 308 | t=R^s[S+1] | |
| 309 | #endif | |
| 310 | ||
| 311 | /* The changes to this macro may help or hinder, depending on the | |
| 2db6d5b8 | 312 | * compiler and the architecture. gcc2 always seems to do well :-). |
| 462129d3 MW |
313 | * Inspired by Dana How <how@isl.stanford.edu> |
| 314 | * DO NOT use the alternative version on machines with 8 byte longs. | |
| 315 | * It does not seem to work on the Alpha, even when DES_LONG is 4 | |
| 316 | * bytes, probably an issue of accessing non-word aligned objects :-( */ | |
| 317 | #ifdef DES_PTR | |
| 318 | ||
| f3bb1bd0 | 319 | /* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there |
| 462129d3 MW |
320 | * is no reason to not xor all the sub items together. This potentially |
| 321 | * saves a register since things can be xored directly into L */ | |
| 322 | ||
| 323 | #if defined(DES_RISC1) || defined(DES_RISC2) | |
| 324 | #ifdef DES_RISC1 | |
| 325 | #define D_ENCRYPT(LL,R,S) { \ | |
| 326 | unsigned int u1,u2,u3; \ | |
| 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 | u>>=16L; \ | |
| 333 | LL^= *(DES_LONG *)((unsigned char *)des_SP +u1); \ | |
| 334 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \ | |
| 335 | u3=(int)(u>>8L); \ | |
| 336 | u1=(int)u&0xfc; \ | |
| 337 | u3&=0xfc; \ | |
| 338 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+u1); \ | |
| 339 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+u3); \ | |
| 340 | u2=(int)t>>8L; \ | |
| 341 | u1=(int)t&0xfc; \ | |
| 342 | u2&=0xfc; \ | |
| 343 | t>>=16L; \ | |
| 344 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \ | |
| 345 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \ | |
| 346 | u3=(int)t>>8L; \ | |
| 347 | u1=(int)t&0xfc; \ | |
| 348 | u3&=0xfc; \ | |
| 349 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+u1); \ | |
| 350 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+u3); } | |
| 351 | #endif | |
| 352 | #ifdef DES_RISC2 | |
| 353 | #define D_ENCRYPT(LL,R,S) { \ | |
| 354 | unsigned int u1,u2,s1,s2; \ | |
| 355 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | |
| 356 | u2=(int)u>>8L; \ | |
| 357 | u1=(int)u&0xfc; \ | |
| 358 | u2&=0xfc; \ | |
| 359 | t=ROTATE(t,4); \ | |
| 360 | LL^= *(DES_LONG *)((unsigned char *)des_SP +u1); \ | |
| 361 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \ | |
| 362 | s1=(int)(u>>16L); \ | |
| 363 | s2=(int)(u>>24L); \ | |
| 364 | s1&=0xfc; \ | |
| 365 | s2&=0xfc; \ | |
| 366 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+s1); \ | |
| 367 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+s2); \ | |
| 368 | u2=(int)t>>8L; \ | |
| 369 | u1=(int)t&0xfc; \ | |
| 370 | u2&=0xfc; \ | |
| 371 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \ | |
| 372 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \ | |
| 373 | s1=(int)(t>>16L); \ | |
| 374 | s2=(int)(t>>24L); \ | |
| 375 | s1&=0xfc; \ | |
| 376 | s2&=0xfc; \ | |
| 377 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+s1); \ | |
| 378 | LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+s2); } | |
| 379 | #endif | |
| 380 | #else | |
| 381 | #define D_ENCRYPT(LL,R,S) { \ | |
| 382 | LOAD_DATA_tmp(R,S,u,t,E0,E1); \ | |
| 383 | t=ROTATE(t,4); \ | |
| 384 | LL^= \ | |
| 385 | *(DES_LONG *)((unsigned char *)des_SP +((u )&0xfc))^ \ | |
| 386 | *(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8L)&0xfc))^ \ | |
| 387 | *(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16L)&0xfc))^ \ | |
| 388 | *(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24L)&0xfc))^ \ | |
| 389 | *(DES_LONG *)((unsigned char *)des_SP+0x100+((t )&0xfc))^ \ | |
| 390 | *(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8L)&0xfc))^ \ | |
| 391 | *(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16L)&0xfc))^ \ | |
| 392 | *(DES_LONG *)((unsigned char *)des_SP+0x700+((t>>24L)&0xfc)); } | |
| 393 | #endif | |
| 394 | ||
| 395 | #else /* original version */ | |
| 396 | ||
| 397 | #if defined(DES_RISC1) || defined(DES_RISC2) | |
| 398 | #ifdef DES_RISC1 | |
| 399 | #define D_ENCRYPT(LL,R,S) {\ | |
| 400 | unsigned int u1,u2,u3; \ | |
| 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 | u>>=16L; \ | |
| 408 | LL^=des_SPtrans[0][u1]; \ | |
| 409 | LL^=des_SPtrans[2][u2]; \ | |
| 410 | u3=(int)u>>8L; \ | |
| 411 | u1=(int)u&0x3f; \ | |
| 412 | u3&=0x3f; \ | |
| 413 | LL^=des_SPtrans[4][u1]; \ | |
| 414 | LL^=des_SPtrans[6][u3]; \ | |
| 415 | u2=(int)t>>8L; \ | |
| 416 | u1=(int)t&0x3f; \ | |
| 417 | u2&=0x3f; \ | |
| 418 | t>>=16L; \ | |
| 419 | LL^=des_SPtrans[1][u1]; \ | |
| 420 | LL^=des_SPtrans[3][u2]; \ | |
| 421 | u3=(int)t>>8L; \ | |
| 422 | u1=(int)t&0x3f; \ | |
| 423 | u3&=0x3f; \ | |
| 424 | LL^=des_SPtrans[5][u1]; \ | |
| 425 | LL^=des_SPtrans[7][u3]; } | |
| 426 | #endif | |
| 427 | #ifdef DES_RISC2 | |
| 428 | #define D_ENCRYPT(LL,R,S) {\ | |
| 429 | unsigned int u1,u2,s1,s2; \ | |
| 430 | LOAD_DATA(R,S,u,t,E0,E1,u1); \ | |
| 431 | u>>=2L; \ | |
| 432 | t=ROTATE(t,6); \ | |
| 433 | u2=(int)u>>8L; \ | |
| 434 | u1=(int)u&0x3f; \ | |
| 435 | u2&=0x3f; \ | |
| 436 | LL^=des_SPtrans[0][u1]; \ | |
| 437 | LL^=des_SPtrans[2][u2]; \ | |
| 438 | s1=(int)u>>16L; \ | |
| 439 | s2=(int)u>>24L; \ | |
| 440 | s1&=0x3f; \ | |
| 441 | s2&=0x3f; \ | |
| 442 | LL^=des_SPtrans[4][s1]; \ | |
| 443 | LL^=des_SPtrans[6][s2]; \ | |
| 444 | u2=(int)t>>8L; \ | |
| 445 | u1=(int)t&0x3f; \ | |
| 446 | u2&=0x3f; \ | |
| 447 | LL^=des_SPtrans[1][u1]; \ | |
| 448 | LL^=des_SPtrans[3][u2]; \ | |
| 449 | s1=(int)t>>16; \ | |
| 450 | s2=(int)t>>24L; \ | |
| 451 | s1&=0x3f; \ | |
| 452 | s2&=0x3f; \ | |
| 453 | LL^=des_SPtrans[5][s1]; \ | |
| 454 | LL^=des_SPtrans[7][s2]; } | |
| 455 | #endif | |
| 456 | ||
| 457 | #else | |
| 458 | ||
| 459 | #define D_ENCRYPT(LL,R,S) {\ | |
| 460 | LOAD_DATA_tmp(R,S,u,t,E0,E1); \ | |
| 461 | t=ROTATE(t,4); \ | |
| 462 | LL^=\ | |
| 463 | des_SPtrans[0][(u>> 2L)&0x3f]^ \ | |
| 464 | des_SPtrans[2][(u>>10L)&0x3f]^ \ | |
| 465 | des_SPtrans[4][(u>>18L)&0x3f]^ \ | |
| 466 | des_SPtrans[6][(u>>26L)&0x3f]^ \ | |
| 467 | des_SPtrans[1][(t>> 2L)&0x3f]^ \ | |
| 468 | des_SPtrans[3][(t>>10L)&0x3f]^ \ | |
| 469 | des_SPtrans[5][(t>>18L)&0x3f]^ \ | |
| 470 | des_SPtrans[7][(t>>26L)&0x3f]; } | |
| 471 | #endif | |
| 472 | #endif | |
| 473 | ||
| 474 | /* IP and FP | |
| 475 | * The problem is more of a geometric problem that random bit fiddling. | |
| 476 | 0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6 | |
| 477 | 8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4 | |
| 478 | 16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2 | |
| 479 | 24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0 | |
| 480 | ||
| 481 | 32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7 | |
| 482 | 40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5 | |
| 483 | 48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3 | |
| 484 | 56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1 | |
| 485 | ||
| 486 | The output has been subject to swaps of the form | |
| 487 | 0 1 -> 3 1 but the odd and even bits have been put into | |
| 488 | 2 3 2 0 | |
| 489 | different words. The main trick is to remember that | |
| 490 | t=((l>>size)^r)&(mask); | |
| 491 | r^=t; | |
| 492 | l^=(t<<size); | |
| 493 | can be used to swap and move bits between words. | |
| 494 | ||
| 495 | So l = 0 1 2 3 r = 16 17 18 19 | |
| 496 | 4 5 6 7 20 21 22 23 | |
| 497 | 8 9 10 11 24 25 26 27 | |
| 498 | 12 13 14 15 28 29 30 31 | |
| 499 | becomes (for size == 2 and mask == 0x3333) | |
| 500 | t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19 | |
| 501 | 6^20 7^21 -- -- 4 5 20 21 6 7 22 23 | |
| 502 | 10^24 11^25 -- -- 8 9 24 25 10 11 24 25 | |
| 503 | 14^28 15^29 -- -- 12 13 28 29 14 15 28 29 | |
| 504 | ||
| 505 | Thanks for hints from Richard Outerbridge - he told me IP&FP | |
| 506 | could be done in 15 xor, 10 shifts and 5 ands. | |
| 507 | When I finally started to think of the problem in 2D | |
| 508 | I first got ~42 operations without xors. When I remembered | |
| 509 | how to use xors :-) I got it to its final state. | |
| 510 | */ | |
| 511 | #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ | |
| 512 | (b)^=(t),\ | |
| 513 | (a)^=((t)<<(n))) | |
| 514 | ||
| 515 | #define IP(l,r) \ | |
| 516 | { \ | |
| 517 | register DES_LONG tt; \ | |
| 518 | PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \ | |
| 519 | PERM_OP(l,r,tt,16,0x0000ffffL); \ | |
| 520 | PERM_OP(r,l,tt, 2,0x33333333L); \ | |
| 521 | PERM_OP(l,r,tt, 8,0x00ff00ffL); \ | |
| 522 | PERM_OP(r,l,tt, 1,0x55555555L); \ | |
| 523 | } | |
| 524 | ||
| 525 | #define FP(l,r) \ | |
| 526 | { \ | |
| 527 | register DES_LONG tt; \ | |
| 528 | PERM_OP(l,r,tt, 1,0x55555555L); \ | |
| 529 | PERM_OP(r,l,tt, 8,0x00ff00ffL); \ | |
| 530 | PERM_OP(l,r,tt, 2,0x33333333L); \ | |
| 531 | PERM_OP(r,l,tt,16,0x0000ffffL); \ | |
| 532 | PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \ | |
| 533 | } | |
| 534 | ||
| 535 | #ifndef NOPROTO | |
| 536 | void fcrypt_body(DES_LONG *out,des_key_schedule ks, | |
| 537 | DES_LONG Eswap0, DES_LONG Eswap1); | |
| 538 | #else | |
| 539 | void fcrypt_body(); | |
| 540 | #endif | |
| 541 | ||
| 542 | static const DES_LONG des_skb[8][64]={ | |
| 543 | { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
| 544 | 0x00000000L,0x00000010L,0x20000000L,0x20000010L, | |
| 545 | 0x00010000L,0x00010010L,0x20010000L,0x20010010L, | |
| 546 | 0x00000800L,0x00000810L,0x20000800L,0x20000810L, | |
| 547 | 0x00010800L,0x00010810L,0x20010800L,0x20010810L, | |
| 548 | 0x00000020L,0x00000030L,0x20000020L,0x20000030L, | |
| 549 | 0x00010020L,0x00010030L,0x20010020L,0x20010030L, | |
| 550 | 0x00000820L,0x00000830L,0x20000820L,0x20000830L, | |
| 551 | 0x00010820L,0x00010830L,0x20010820L,0x20010830L, | |
| 552 | 0x00080000L,0x00080010L,0x20080000L,0x20080010L, | |
| 553 | 0x00090000L,0x00090010L,0x20090000L,0x20090010L, | |
| 554 | 0x00080800L,0x00080810L,0x20080800L,0x20080810L, | |
| 555 | 0x00090800L,0x00090810L,0x20090800L,0x20090810L, | |
| 556 | 0x00080020L,0x00080030L,0x20080020L,0x20080030L, | |
| 557 | 0x00090020L,0x00090030L,0x20090020L,0x20090030L, | |
| 558 | 0x00080820L,0x00080830L,0x20080820L,0x20080830L, | |
| 559 | 0x00090820L,0x00090830L,0x20090820L,0x20090830L, | |
| 560 | }, | |
| 561 | { /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ | |
| 562 | 0x00000000L,0x02000000L,0x00002000L,0x02002000L, | |
| 563 | 0x00200000L,0x02200000L,0x00202000L,0x02202000L, | |
| 564 | 0x00000004L,0x02000004L,0x00002004L,0x02002004L, | |
| 565 | 0x00200004L,0x02200004L,0x00202004L,0x02202004L, | |
| 566 | 0x00000400L,0x02000400L,0x00002400L,0x02002400L, | |
| 567 | 0x00200400L,0x02200400L,0x00202400L,0x02202400L, | |
| 568 | 0x00000404L,0x02000404L,0x00002404L,0x02002404L, | |
| 569 | 0x00200404L,0x02200404L,0x00202404L,0x02202404L, | |
| 570 | 0x10000000L,0x12000000L,0x10002000L,0x12002000L, | |
| 571 | 0x10200000L,0x12200000L,0x10202000L,0x12202000L, | |
| 572 | 0x10000004L,0x12000004L,0x10002004L,0x12002004L, | |
| 573 | 0x10200004L,0x12200004L,0x10202004L,0x12202004L, | |
| 574 | 0x10000400L,0x12000400L,0x10002400L,0x12002400L, | |
| 575 | 0x10200400L,0x12200400L,0x10202400L,0x12202400L, | |
| 576 | 0x10000404L,0x12000404L,0x10002404L,0x12002404L, | |
| 577 | 0x10200404L,0x12200404L,0x10202404L,0x12202404L, | |
| 578 | }, | |
| 579 | { /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ | |
| 580 | 0x00000000L,0x00000001L,0x00040000L,0x00040001L, | |
| 581 | 0x01000000L,0x01000001L,0x01040000L,0x01040001L, | |
| 582 | 0x00000002L,0x00000003L,0x00040002L,0x00040003L, | |
| 583 | 0x01000002L,0x01000003L,0x01040002L,0x01040003L, | |
| 584 | 0x00000200L,0x00000201L,0x00040200L,0x00040201L, | |
| 585 | 0x01000200L,0x01000201L,0x01040200L,0x01040201L, | |
| 586 | 0x00000202L,0x00000203L,0x00040202L,0x00040203L, | |
| 587 | 0x01000202L,0x01000203L,0x01040202L,0x01040203L, | |
| 588 | 0x08000000L,0x08000001L,0x08040000L,0x08040001L, | |
| 589 | 0x09000000L,0x09000001L,0x09040000L,0x09040001L, | |
| 590 | 0x08000002L,0x08000003L,0x08040002L,0x08040003L, | |
| 591 | 0x09000002L,0x09000003L,0x09040002L,0x09040003L, | |
| 592 | 0x08000200L,0x08000201L,0x08040200L,0x08040201L, | |
| 593 | 0x09000200L,0x09000201L,0x09040200L,0x09040201L, | |
| 594 | 0x08000202L,0x08000203L,0x08040202L,0x08040203L, | |
| 595 | 0x09000202L,0x09000203L,0x09040202L,0x09040203L, | |
| 596 | }, | |
| 597 | { /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ | |
| 598 | 0x00000000L,0x00100000L,0x00000100L,0x00100100L, | |
| 599 | 0x00000008L,0x00100008L,0x00000108L,0x00100108L, | |
| 600 | 0x00001000L,0x00101000L,0x00001100L,0x00101100L, | |
| 601 | 0x00001008L,0x00101008L,0x00001108L,0x00101108L, | |
| 602 | 0x04000000L,0x04100000L,0x04000100L,0x04100100L, | |
| 603 | 0x04000008L,0x04100008L,0x04000108L,0x04100108L, | |
| 604 | 0x04001000L,0x04101000L,0x04001100L,0x04101100L, | |
| 605 | 0x04001008L,0x04101008L,0x04001108L,0x04101108L, | |
| 606 | 0x00020000L,0x00120000L,0x00020100L,0x00120100L, | |
| 607 | 0x00020008L,0x00120008L,0x00020108L,0x00120108L, | |
| 608 | 0x00021000L,0x00121000L,0x00021100L,0x00121100L, | |
| 609 | 0x00021008L,0x00121008L,0x00021108L,0x00121108L, | |
| 610 | 0x04020000L,0x04120000L,0x04020100L,0x04120100L, | |
| 611 | 0x04020008L,0x04120008L,0x04020108L,0x04120108L, | |
| 612 | 0x04021000L,0x04121000L,0x04021100L,0x04121100L, | |
| 613 | 0x04021008L,0x04121008L,0x04021108L,0x04121108L, | |
| 614 | }, | |
| 615 | { /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ | |
| 616 | 0x00000000L,0x10000000L,0x00010000L,0x10010000L, | |
| 617 | 0x00000004L,0x10000004L,0x00010004L,0x10010004L, | |
| 618 | 0x20000000L,0x30000000L,0x20010000L,0x30010000L, | |
| 619 | 0x20000004L,0x30000004L,0x20010004L,0x30010004L, | |
| 620 | 0x00100000L,0x10100000L,0x00110000L,0x10110000L, | |
| 621 | 0x00100004L,0x10100004L,0x00110004L,0x10110004L, | |
| 622 | 0x20100000L,0x30100000L,0x20110000L,0x30110000L, | |
| 623 | 0x20100004L,0x30100004L,0x20110004L,0x30110004L, | |
| 624 | 0x00001000L,0x10001000L,0x00011000L,0x10011000L, | |
| 625 | 0x00001004L,0x10001004L,0x00011004L,0x10011004L, | |
| 626 | 0x20001000L,0x30001000L,0x20011000L,0x30011000L, | |
| 627 | 0x20001004L,0x30001004L,0x20011004L,0x30011004L, | |
| 628 | 0x00101000L,0x10101000L,0x00111000L,0x10111000L, | |
| 629 | 0x00101004L,0x10101004L,0x00111004L,0x10111004L, | |
| 630 | 0x20101000L,0x30101000L,0x20111000L,0x30111000L, | |
| 631 | 0x20101004L,0x30101004L,0x20111004L,0x30111004L, | |
| 632 | }, | |
| 633 | { /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ | |
| 634 | 0x00000000L,0x08000000L,0x00000008L,0x08000008L, | |
| 635 | 0x00000400L,0x08000400L,0x00000408L,0x08000408L, | |
| 636 | 0x00020000L,0x08020000L,0x00020008L,0x08020008L, | |
| 637 | 0x00020400L,0x08020400L,0x00020408L,0x08020408L, | |
| 638 | 0x00000001L,0x08000001L,0x00000009L,0x08000009L, | |
| 639 | 0x00000401L,0x08000401L,0x00000409L,0x08000409L, | |
| 640 | 0x00020001L,0x08020001L,0x00020009L,0x08020009L, | |
| 641 | 0x00020401L,0x08020401L,0x00020409L,0x08020409L, | |
| 642 | 0x02000000L,0x0A000000L,0x02000008L,0x0A000008L, | |
| 643 | 0x02000400L,0x0A000400L,0x02000408L,0x0A000408L, | |
| 644 | 0x02020000L,0x0A020000L,0x02020008L,0x0A020008L, | |
| 645 | 0x02020400L,0x0A020400L,0x02020408L,0x0A020408L, | |
| 646 | 0x02000001L,0x0A000001L,0x02000009L,0x0A000009L, | |
| 647 | 0x02000401L,0x0A000401L,0x02000409L,0x0A000409L, | |
| 648 | 0x02020001L,0x0A020001L,0x02020009L,0x0A020009L, | |
| 649 | 0x02020401L,0x0A020401L,0x02020409L,0x0A020409L, | |
| 650 | }, | |
| 651 | { /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ | |
| 652 | 0x00000000L,0x00000100L,0x00080000L,0x00080100L, | |
| 653 | 0x01000000L,0x01000100L,0x01080000L,0x01080100L, | |
| 654 | 0x00000010L,0x00000110L,0x00080010L,0x00080110L, | |
| 655 | 0x01000010L,0x01000110L,0x01080010L,0x01080110L, | |
| 656 | 0x00200000L,0x00200100L,0x00280000L,0x00280100L, | |
| 657 | 0x01200000L,0x01200100L,0x01280000L,0x01280100L, | |
| 658 | 0x00200010L,0x00200110L,0x00280010L,0x00280110L, | |
| 659 | 0x01200010L,0x01200110L,0x01280010L,0x01280110L, | |
| 660 | 0x00000200L,0x00000300L,0x00080200L,0x00080300L, | |
| 661 | 0x01000200L,0x01000300L,0x01080200L,0x01080300L, | |
| 662 | 0x00000210L,0x00000310L,0x00080210L,0x00080310L, | |
| 663 | 0x01000210L,0x01000310L,0x01080210L,0x01080310L, | |
| 664 | 0x00200200L,0x00200300L,0x00280200L,0x00280300L, | |
| 665 | 0x01200200L,0x01200300L,0x01280200L,0x01280300L, | |
| 666 | 0x00200210L,0x00200310L,0x00280210L,0x00280310L, | |
| 667 | 0x01200210L,0x01200310L,0x01280210L,0x01280310L, | |
| 668 | }, | |
| 669 | { /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ | |
| 670 | 0x00000000L,0x04000000L,0x00040000L,0x04040000L, | |
| 671 | 0x00000002L,0x04000002L,0x00040002L,0x04040002L, | |
| 672 | 0x00002000L,0x04002000L,0x00042000L,0x04042000L, | |
| 673 | 0x00002002L,0x04002002L,0x00042002L,0x04042002L, | |
| 674 | 0x00000020L,0x04000020L,0x00040020L,0x04040020L, | |
| 675 | 0x00000022L,0x04000022L,0x00040022L,0x04040022L, | |
| 676 | 0x00002020L,0x04002020L,0x00042020L,0x04042020L, | |
| 677 | 0x00002022L,0x04002022L,0x00042022L,0x04042022L, | |
| 678 | 0x00000800L,0x04000800L,0x00040800L,0x04040800L, | |
| 679 | 0x00000802L,0x04000802L,0x00040802L,0x04040802L, | |
| 680 | 0x00002800L,0x04002800L,0x00042800L,0x04042800L, | |
| 681 | 0x00002802L,0x04002802L,0x00042802L,0x04042802L, | |
| 682 | 0x00000820L,0x04000820L,0x00040820L,0x04040820L, | |
| 683 | 0x00000822L,0x04000822L,0x00040822L,0x04040822L, | |
| 684 | 0x00002820L,0x04002820L,0x00042820L,0x04042820L, | |
| 685 | 0x00002822L,0x04002822L,0x00042822L,0x04042822L, | |
| 686 | } | |
| 687 | }; | |
| 688 | ||
| 689 | const DES_LONG des_SPtrans[8][64]={ | |
| 690 | { | |
| 691 | /* nibble 0 */ | |
| 692 | 0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, | |
| 693 | 0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L, | |
| 694 | 0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L, | |
| 695 | 0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L, | |
| 696 | 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L, | |
| 697 | 0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, | |
| 698 | 0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L, | |
| 699 | 0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L, | |
| 700 | 0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L, | |
| 701 | 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L, | |
| 702 | 0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, | |
| 703 | 0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L, | |
| 704 | 0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L, | |
| 705 | 0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L, | |
| 706 | 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L, | |
| 707 | 0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, | |
| 708 | }, | |
| 709 | { /* nibble 1 */ | |
| 710 | 0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, | |
| 711 | 0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L, | |
| 712 | 0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L, | |
| 713 | 0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L, | |
| 714 | 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L, | |
| 715 | 0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, | |
| 716 | 0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L, | |
| 717 | 0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L, | |
| 718 | 0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L, | |
| 719 | 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L, | |
| 720 | 0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, | |
| 721 | 0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L, | |
| 722 | 0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L, | |
| 723 | 0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L, | |
| 724 | 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L, | |
| 725 | 0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, | |
| 726 | }, | |
| 727 | { /* nibble 2 */ | |
| 728 | 0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, | |
| 729 | 0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L, | |
| 730 | 0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L, | |
| 731 | 0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L, | |
| 732 | 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L, | |
| 733 | 0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, | |
| 734 | 0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L, | |
| 735 | 0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L, | |
| 736 | 0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L, | |
| 737 | 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L, | |
| 738 | 0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, | |
| 739 | 0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L, | |
| 740 | 0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L, | |
| 741 | 0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L, | |
| 742 | 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L, | |
| 743 | 0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, | |
| 744 | }, | |
| 745 | { /* nibble 3 */ | |
| 746 | 0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, | |
| 747 | 0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L, | |
| 748 | 0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L, | |
| 749 | 0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L, | |
| 750 | 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L, | |
| 751 | 0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, | |
| 752 | 0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L, | |
| 753 | 0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L, | |
| 754 | 0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L, | |
| 755 | 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L, | |
| 756 | 0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, | |
| 757 | 0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L, | |
| 758 | 0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L, | |
| 759 | 0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L, | |
| 760 | 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L, | |
| 761 | 0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, | |
| 762 | }, | |
| 763 | { /* nibble 4 */ | |
| 764 | 0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, | |
| 765 | 0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L, | |
| 766 | 0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L, | |
| 767 | 0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L, | |
| 768 | 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L, | |
| 769 | 0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, | |
| 770 | 0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L, | |
| 771 | 0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L, | |
| 772 | 0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L, | |
| 773 | 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L, | |
| 774 | 0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, | |
| 775 | 0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L, | |
| 776 | 0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L, | |
| 777 | 0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L, | |
| 778 | 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L, | |
| 779 | 0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, | |
| 780 | }, | |
| 781 | { /* nibble 5 */ | |
| 782 | 0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, | |
| 783 | 0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L, | |
| 784 | 0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L, | |
| 785 | 0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L, | |
| 786 | 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L, | |
| 787 | 0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, | |
| 788 | 0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L, | |
| 789 | 0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L, | |
| 790 | 0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L, | |
| 791 | 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L, | |
| 792 | 0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, | |
| 793 | 0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L, | |
| 794 | 0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L, | |
| 795 | 0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L, | |
| 796 | 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L, | |
| 797 | 0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, | |
| 798 | }, | |
| 799 | { /* nibble 6 */ | |
| 800 | 0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, | |
| 801 | 0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L, | |
| 802 | 0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L, | |
| 803 | 0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L, | |
| 804 | 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L, | |
| 805 | 0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, | |
| 806 | 0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L, | |
| 807 | 0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L, | |
| 808 | 0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L, | |
| 809 | 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L, | |
| 810 | 0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, | |
| 811 | 0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L, | |
| 812 | 0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L, | |
| 813 | 0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L, | |
| 814 | 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L, | |
| 815 | 0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, | |
| 816 | }, | |
| 817 | { /* nibble 7 */ | |
| 818 | 0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, | |
| 819 | 0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L, | |
| 820 | 0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L, | |
| 821 | 0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L, | |
| 822 | 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L, | |
| 823 | 0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, | |
| 824 | 0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L, | |
| 825 | 0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L, | |
| 826 | 0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L, | |
| 827 | 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L, | |
| 828 | 0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, | |
| 829 | 0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L, | |
| 830 | 0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L, | |
| 831 | 0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L, | |
| 832 | 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L, | |
| 833 | 0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, | |
| 834 | } | |
| 835 | }; | |
| 836 | ||
| 837 | #define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ | |
| 838 | (a)=(a)^(t)^(t>>(16-(n)))) | |
| 839 | ||
| 840 | static const unsigned char odd_parity[256]={ | |
| 841 | 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14, | |
| 842 | 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31, | |
| 843 | 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47, | |
| 844 | 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62, | |
| 845 | 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79, | |
| 846 | 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94, | |
| 847 | 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110, | |
| 848 | 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127, | |
| 849 | 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143, | |
| 850 | 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158, | |
| 851 | 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174, | |
| 852 | 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191, | |
| 853 | 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206, | |
| 854 | 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223, | |
| 855 | 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239, | |
| 856 | 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254 | |
| 857 | }; | |
| 858 | ||
| 859 | /** | |
| 860 | * Create key schedule for a single DES 64Bit key | |
| 861 | */ | |
| 862 | static int des_set_key(des_cblock *key, des_key_schedule *schedule) | |
| 863 | { | |
| 864 | static int shifts2[16] = {0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; | |
| 865 | register DES_LONG c,d,t,s,t2; | |
| 866 | register unsigned char *in; | |
| 867 | register DES_LONG *k; | |
| 868 | register int i; | |
| cbbb71c4 | 869 | des_cblock odd; |
| 462129d3 MW |
870 | |
| 871 | for (i = 0; i < sizeof(des_cblock); i++) | |
| 872 | { | |
| cbbb71c4 | 873 | odd[i] = odd_parity[(*key)[i]]; |
| 462129d3 MW |
874 | } |
| 875 | ||
| 876 | k=(DES_LONG *)schedule; | |
| cbbb71c4 | 877 | in=(unsigned char *)&odd; |
| 462129d3 MW |
878 | |
| 879 | c2l(in,c); | |
| 880 | c2l(in,d); | |
| 881 | ||
| 7daf5226 | 882 | /* do PC1 in 60 simple operations */ |
| 462129d3 MW |
883 | /* PERM_OP(d,c,t,4,0x0f0f0f0fL); |
| 884 | HPERM_OP(c,t,-2, 0xcccc0000L); | |
| 885 | HPERM_OP(c,t,-1, 0xaaaa0000L); | |
| 886 | HPERM_OP(c,t, 8, 0x00ff0000L); | |
| 887 | HPERM_OP(c,t,-1, 0xaaaa0000L); | |
| 888 | HPERM_OP(d,t,-8, 0xff000000L); | |
| 889 | HPERM_OP(d,t, 8, 0x00ff0000L); | |
| 890 | HPERM_OP(d,t, 2, 0x33330000L); | |
| 891 | d=((d&0x00aa00aaL)<<7L)|((d&0x55005500L)>>7L)|(d&0xaa55aa55L); | |
| 892 | d=(d>>8)|((c&0xf0000000L)>>4); | |
| 893 | c&=0x0fffffffL; */ | |
| 894 | ||
| 895 | /* I now do it in 47 simple operations :-) | |
| 896 | * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov) | |
| 897 | * for the inspiration. :-) */ | |
| 898 | PERM_OP (d,c,t,4,0x0f0f0f0fL); | |
| 899 | HPERM_OP(c,t,-2,0xcccc0000L); | |
| 900 | HPERM_OP(d,t,-2,0xcccc0000L); | |
| 901 | PERM_OP (d,c,t,1,0x55555555L); | |
| 902 | PERM_OP (c,d,t,8,0x00ff00ffL); | |
| 903 | PERM_OP (d,c,t,1,0x55555555L); | |
| 904 | d= (((d&0x000000ffL)<<16L)| (d&0x0000ff00L) | | |
| 905 | ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L)); | |
| 906 | c&=0x0fffffffL; | |
| 907 | ||
| 908 | for (i=0; i<ITERATIONS; i++) | |
| 909 | { | |
| 910 | if (shifts2[i]) | |
| 911 | { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); } | |
| 912 | else | |
| 913 | { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); } | |
| 914 | c&=0x0fffffffL; | |
| 915 | d&=0x0fffffffL; | |
| 916 | /* could be a few less shifts but I am to lazy at this | |
| 917 | * point in time to investigate */ | |
| 918 | s= des_skb[0][ (c )&0x3f ]| | |
| 919 | des_skb[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]| | |
| 920 | des_skb[2][((c>>13)&0x0f)|((c>>14L)&0x30)]| | |
| 921 | des_skb[3][((c>>20)&0x01)|((c>>21L)&0x06) | | |
| 922 | ((c>>22L)&0x38)]; | |
| 923 | t= des_skb[4][ (d )&0x3f ]| | |
| 924 | des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]| | |
| 925 | des_skb[6][ (d>>15L)&0x3f ]| | |
| 926 | des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)]; | |
| 927 | ||
| 928 | /* table contained 0213 4657 */ | |
| 929 | t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL; | |
| 930 | *(k++)=ROTATE(t2,30)&0xffffffffL; | |
| 931 | ||
| 932 | t2=((s>>16L)|(t&0xffff0000L)); | |
| 933 | *(k++)=ROTATE(t2,26)&0xffffffffL; | |
| 934 | } | |
| 935 | return(0); | |
| 936 | } | |
| 937 | ||
| 938 | ||
| 939 | static void des_encrypt(DES_LONG *data, des_key_schedule ks, int enc) | |
| 940 | { | |
| 941 | register DES_LONG l,r,t,u; | |
| 942 | #ifdef DES_PTR | |
| 943 | register unsigned char *des_SP=(unsigned char *)des_SPtrans; | |
| 944 | #endif | |
| 945 | #ifndef DES_UNROLL | |
| 946 | register int i; | |
| 947 | #endif | |
| 948 | register DES_LONG *s; | |
| 949 | ||
| 950 | r=data[0]; | |
| 951 | l=data[1]; | |
| 952 | ||
| 953 | IP(r,l); | |
| 954 | /* Things have been modified so that the initial rotate is | |
| 955 | * done outside the loop. This required the | |
| 956 | * des_SPtrans values in sp.h to be rotated 1 bit to the right. | |
| 957 | * One perl script later and things have a 5% speed up on a sparc2. | |
| 958 | * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> | |
| 959 | * for pointing this out. */ | |
| 960 | /* clear the top bits on machines with 8byte longs */ | |
| 961 | /* shift left by 2 */ | |
| 962 | r=ROTATE(r,29)&0xffffffffL; | |
| 963 | l=ROTATE(l,29)&0xffffffffL; | |
| 964 | ||
| 965 | s=(DES_LONG *)ks; | |
| 966 | /* I don't know if it is worth the effort of loop unrolling the | |
| 967 | * inner loop */ | |
| 968 | if (enc) | |
| 969 | { | |
| 970 | #ifdef DES_UNROLL | |
| 971 | D_ENCRYPT(l,r, 0); /* 1 */ | |
| 972 | D_ENCRYPT(r,l, 2); /* 2 */ | |
| 973 | D_ENCRYPT(l,r, 4); /* 3 */ | |
| 974 | D_ENCRYPT(r,l, 6); /* 4 */ | |
| 975 | D_ENCRYPT(l,r, 8); /* 5 */ | |
| 976 | D_ENCRYPT(r,l,10); /* 6 */ | |
| 977 | D_ENCRYPT(l,r,12); /* 7 */ | |
| 978 | D_ENCRYPT(r,l,14); /* 8 */ | |
| 979 | D_ENCRYPT(l,r,16); /* 9 */ | |
| 980 | D_ENCRYPT(r,l,18); /* 10 */ | |
| 981 | D_ENCRYPT(l,r,20); /* 11 */ | |
| 982 | D_ENCRYPT(r,l,22); /* 12 */ | |
| 983 | D_ENCRYPT(l,r,24); /* 13 */ | |
| 984 | D_ENCRYPT(r,l,26); /* 14 */ | |
| 985 | D_ENCRYPT(l,r,28); /* 15 */ | |
| 986 | D_ENCRYPT(r,l,30); /* 16 */ | |
| 987 | #else | |
| 988 | for (i=0; i<32; i+=8) | |
| 989 | { | |
| 990 | D_ENCRYPT(l,r,i+0); /* 1 */ | |
| 991 | D_ENCRYPT(r,l,i+2); /* 2 */ | |
| 992 | D_ENCRYPT(l,r,i+4); /* 3 */ | |
| 993 | D_ENCRYPT(r,l,i+6); /* 4 */ | |
| 994 | } | |
| 995 | #endif | |
| 996 | } | |
| 997 | else | |
| 998 | { | |
| 999 | #ifdef DES_UNROLL | |
| 1000 | D_ENCRYPT(l,r,30); /* 16 */ | |
| 1001 | D_ENCRYPT(r,l,28); /* 15 */ | |
| 1002 | D_ENCRYPT(l,r,26); /* 14 */ | |
| 1003 | D_ENCRYPT(r,l,24); /* 13 */ | |
| 1004 | D_ENCRYPT(l,r,22); /* 12 */ | |
| 1005 | D_ENCRYPT(r,l,20); /* 11 */ | |
| 1006 | D_ENCRYPT(l,r,18); /* 10 */ | |
| 1007 | D_ENCRYPT(r,l,16); /* 9 */ | |
| 1008 | D_ENCRYPT(l,r,14); /* 8 */ | |
| 1009 | D_ENCRYPT(r,l,12); /* 7 */ | |
| 1010 | D_ENCRYPT(l,r,10); /* 6 */ | |
| 1011 | D_ENCRYPT(r,l, 8); /* 5 */ | |
| 1012 | D_ENCRYPT(l,r, 6); /* 4 */ | |
| 1013 | D_ENCRYPT(r,l, 4); /* 3 */ | |
| 1014 | D_ENCRYPT(l,r, 2); /* 2 */ | |
| 1015 | D_ENCRYPT(r,l, 0); /* 1 */ | |
| 1016 | #else | |
| 1017 | for (i=30; i>0; i-=8) | |
| 1018 | { | |
| 1019 | D_ENCRYPT(l,r,i-0); /* 16 */ | |
| 1020 | D_ENCRYPT(r,l,i-2); /* 15 */ | |
| 1021 | D_ENCRYPT(l,r,i-4); /* 14 */ | |
| 1022 | D_ENCRYPT(r,l,i-6); /* 13 */ | |
| 1023 | } | |
| 1024 | #endif | |
| 1025 | } | |
| 1026 | ||
| 1027 | /* rotate and clear the top bits on machines with 8byte longs */ | |
| 1028 | l=ROTATE(l,3)&0xffffffffL; | |
| 1029 | r=ROTATE(r,3)&0xffffffffL; | |
| 1030 | ||
| 1031 | FP(r,l); | |
| 1032 | data[0]=l; | |
| 1033 | data[1]=r; | |
| 1034 | l=r=t=u=0; | |
| 1035 | } | |
| 1036 | ||
| 1037 | /** | |
| 1038 | * DES CBC encrypt decrypt routine | |
| 1039 | */ | |
| 7daf5226 | 1040 | static void des_cbc_encrypt(des_cblock *input, des_cblock *output, long length, |
| 462129d3 MW |
1041 | des_key_schedule schedule, des_cblock *ivec, int enc) |
| 1042 | { | |
| 1043 | register DES_LONG tin0,tin1; | |
| 1044 | register DES_LONG tout0,tout1,xor0,xor1; | |
| 1045 | register unsigned char *in,*out; | |
| 1046 | register long l=length; | |
| 1047 | DES_LONG tin[2]; | |
| 1048 | unsigned char *iv; | |
| 1049 | ||
| 1050 | in=(unsigned char *)input; | |
| 1051 | out=(unsigned char *)output; | |
| 1052 | iv=(unsigned char *)ivec; | |
| 1053 | ||
| 1054 | if (enc) | |
| 1055 | { | |
| 1056 | c2l(iv,tout0); | |
| 1057 | c2l(iv,tout1); | |
| 1058 | for (l-=8; l>=0; l-=8) | |
| 1059 | { | |
| 1060 | c2l(in,tin0); | |
| 1061 | c2l(in,tin1); | |
| 1062 | tin0^=tout0; tin[0]=tin0; | |
| 1063 | tin1^=tout1; tin[1]=tin1; | |
| 1064 | des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); | |
| 1065 | tout0=tin[0]; l2c(tout0,out); | |
| 1066 | tout1=tin[1]; l2c(tout1,out); | |
| 1067 | } | |
| 1068 | if (l != -8) | |
| 1069 | { | |
| 1070 | c2ln(in,tin0,tin1,l+8); | |
| 1071 | tin0^=tout0; tin[0]=tin0; | |
| 1072 | tin1^=tout1; tin[1]=tin1; | |
| 1073 | des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); | |
| 1074 | tout0=tin[0]; l2c(tout0,out); | |
| 1075 | tout1=tin[1]; l2c(tout1,out); | |
| 1076 | } | |
| 1077 | } | |
| 1078 | else | |
| 1079 | { | |
| 1080 | c2l(iv,xor0); | |
| 1081 | c2l(iv,xor1); | |
| 1082 | for (l-=8; l>=0; l-=8) | |
| 1083 | { | |
| 1084 | c2l(in,tin0); tin[0]=tin0; | |
| 1085 | c2l(in,tin1); tin[1]=tin1; | |
| 1086 | des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); | |
| 1087 | tout0=tin[0]^xor0; | |
| 1088 | tout1=tin[1]^xor1; | |
| 1089 | l2c(tout0,out); | |
| 1090 | l2c(tout1,out); | |
| 1091 | xor0=tin0; | |
| 1092 | xor1=tin1; | |
| 1093 | } | |
| 1094 | if (l != -8) | |
| 1095 | { | |
| 1096 | c2l(in,tin0); tin[0]=tin0; | |
| 1097 | c2l(in,tin1); tin[1]=tin1; | |
| 1098 | des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); | |
| 1099 | tout0=tin[0]^xor0; | |
| 1100 | tout1=tin[1]^xor1; | |
| 1101 | l2cn(tout0,tout1,out,l+8); | |
| 1102 | /* xor0=tin0; | |
| 1103 | xor1=tin1; */ | |
| 1104 | } | |
| 1105 | } | |
| 1106 | tin0=tin1=tout0=tout1=xor0=xor1=0; | |
| 1107 | tin[0]=tin[1]=0; | |
| 1108 | } | |
| 1109 | ||
| 7b767025 TB |
1110 | /** |
| 1111 | * DES ECB encrypt decrypt routine | |
| 1112 | */ | |
| 7daf5226 | 1113 | static void des_ecb_encrypt(des_cblock *input, des_cblock *output, long length, |
| 7b767025 TB |
1114 | des_key_schedule schedule, int enc) |
| 1115 | { | |
| 1116 | register DES_LONG tin0,tin1; | |
| 1117 | register DES_LONG tout0,tout1; | |
| 1118 | register unsigned char *in,*out; | |
| 1119 | register long l=length; | |
| 1120 | DES_LONG tin[2]; | |
| 1121 | ||
| 1122 | in=(unsigned char *)input; | |
| 1123 | out=(unsigned char *)output; | |
| 1124 | ||
| 1125 | if (enc) | |
| 1126 | { | |
| 1127 | for (l-=8; l>=0; l-=8) | |
| 1128 | { | |
| 6e7c0b1e TB |
1129 | c2l(in,tin0); tin[0]=tin0; |
| 1130 | c2l(in,tin1); tin[1]=tin1; | |
| 7b767025 TB |
1131 | des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); |
| 1132 | tout0=tin[0]; l2c(tout0,out); | |
| 1133 | tout1=tin[1]; l2c(tout1,out); | |
| 1134 | } | |
| 1135 | if (l != -8) | |
| 1136 | { | |
| 1137 | c2ln(in,tin0,tin1,l+8); | |
| 1138 | tin[0]=tin0; | |
| 1139 | tin[1]=tin1; | |
| 1140 | des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); | |
| 1141 | tout0=tin[0]; l2c(tout0,out); | |
| 1142 | tout1=tin[1]; l2c(tout1,out); | |
| 1143 | } | |
| 1144 | } | |
| 1145 | else | |
| 1146 | { | |
| 1147 | for (l-=8; l>=0; l-=8) | |
| 1148 | { | |
| 1149 | c2l(in,tin0); tin[0]=tin0; | |
| 1150 | c2l(in,tin1); tin[1]=tin1; | |
| 1151 | des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); | |
| 6e7c0b1e TB |
1152 | tout0=tin[0]; l2c(tout0,out); |
| 1153 | tout1=tin[1]; l2c(tout1,out); | |
| 7b767025 TB |
1154 | } |
| 1155 | if (l != -8) | |
| 1156 | { | |
| 1157 | c2l(in,tin0); tin[0]=tin0; | |
| 1158 | c2l(in,tin1); tin[1]=tin1; | |
| 1159 | des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT); | |
| 6e7c0b1e TB |
1160 | tout0=tin[0]; |
| 1161 | tout1=tin[1]; | |
| 7b767025 TB |
1162 | l2cn(tout0,tout1,out,l+8); |
| 1163 | } | |
| 1164 | } | |
| 1165 | tin0=tin1=tout0=tout1=0; | |
| 1166 | tin[0]=tin[1]=0; | |
| 1167 | } | |
| 1168 | ||
| 462129d3 MW |
1169 | static void des_encrypt2(DES_LONG *data, des_key_schedule ks, int enc) |
| 1170 | { | |
| 1171 | register DES_LONG l,r,t,u; | |
| 1172 | #ifdef DES_PTR | |
| 1173 | register unsigned char *des_SP=(unsigned char *)des_SPtrans; | |
| 1174 | #endif | |
| 1175 | #ifndef DES_UNROLL | |
| 1176 | register int i; | |
| 1177 | #endif | |
| 1178 | register DES_LONG *s; | |
| 1179 | ||
| 1180 | r=data[0]; | |
| 1181 | l=data[1]; | |
| 1182 | ||
| 1183 | /* Things have been modified so that the initial rotate is | |
| 1184 | * done outside the loop. This required the | |
| 1185 | * des_SPtrans values in sp.h to be rotated 1 bit to the right. | |
| 1186 | * One perl script later and things have a 5% speed up on a sparc2. | |
| 1187 | * Thanks to Richard Outerbridge <71755.204@CompuServe.COM> | |
| 1188 | * for pointing this out. | |
| 1189 | * clear the top bits on machines with 8byte longs */ | |
| 1190 | r=ROTATE(r,29)&0xffffffffL; | |
| 1191 | l=ROTATE(l,29)&0xffffffffL; | |
| 1192 | ||
| 1193 | s=(DES_LONG *)ks; | |
| 1194 | /* I don't know if it is worth the effort of loop unrolling the | |
| 1195 | * inner loop */ | |
| 1196 | if (enc) | |
| 1197 | { | |
| 1198 | #ifdef DES_UNROLL | |
| 1199 | D_ENCRYPT(l,r, 0); /* 1 */ | |
| 1200 | D_ENCRYPT(r,l, 2); /* 2 */ | |
| 1201 | D_ENCRYPT(l,r, 4); /* 3 */ | |
| 1202 | D_ENCRYPT(r,l, 6); /* 4 */ | |
| 1203 | D_ENCRYPT(l,r, 8); /* 5 */ | |
| 1204 | D_ENCRYPT(r,l,10); /* 6 */ | |
| 1205 | D_ENCRYPT(l,r,12); /* 7 */ | |
| 1206 | D_ENCRYPT(r,l,14); /* 8 */ | |
| 1207 | D_ENCRYPT(l,r,16); /* 9 */ | |
| 1208 | D_ENCRYPT(r,l,18); /* 10 */ | |
| 1209 | D_ENCRYPT(l,r,20); /* 11 */ | |
| 1210 | D_ENCRYPT(r,l,22); /* 12 */ | |
| 1211 | D_ENCRYPT(l,r,24); /* 13 */ | |
| 1212 | D_ENCRYPT(r,l,26); /* 14 */ | |
| 1213 | D_ENCRYPT(l,r,28); /* 15 */ | |
| 1214 | D_ENCRYPT(r,l,30); /* 16 */ | |
| 1215 | #else | |
| 1216 | for (i=0; i<32; i+=8) | |
| 1217 | { | |
| 1218 | D_ENCRYPT(l,r,i+0); /* 1 */ | |
| 1219 | D_ENCRYPT(r,l,i+2); /* 2 */ | |
| 1220 | D_ENCRYPT(l,r,i+4); /* 3 */ | |
| 1221 | D_ENCRYPT(r,l,i+6); /* 4 */ | |
| 1222 | } | |
| 1223 | #endif | |
| 1224 | } | |
| 1225 | else | |
| 1226 | { | |
| 1227 | #ifdef DES_UNROLL | |
| 1228 | D_ENCRYPT(l,r,30); /* 16 */ | |
| 1229 | D_ENCRYPT(r,l,28); /* 15 */ | |
| 1230 | D_ENCRYPT(l,r,26); /* 14 */ | |
| 1231 | D_ENCRYPT(r,l,24); /* 13 */ | |
| 1232 | D_ENCRYPT(l,r,22); /* 12 */ | |
| 1233 | D_ENCRYPT(r,l,20); /* 11 */ | |
| 1234 | D_ENCRYPT(l,r,18); /* 10 */ | |
| 1235 | D_ENCRYPT(r,l,16); /* 9 */ | |
| 1236 | D_ENCRYPT(l,r,14); /* 8 */ | |
| 1237 | D_ENCRYPT(r,l,12); /* 7 */ | |
| 1238 | D_ENCRYPT(l,r,10); /* 6 */ | |
| 1239 | D_ENCRYPT(r,l, 8); /* 5 */ | |
| 1240 | D_ENCRYPT(l,r, 6); /* 4 */ | |
| 1241 | D_ENCRYPT(r,l, 4); /* 3 */ | |
| 1242 | D_ENCRYPT(l,r, 2); /* 2 */ | |
| 1243 | D_ENCRYPT(r,l, 0); /* 1 */ | |
| 1244 | #else | |
| 1245 | for (i=30; i>0; i-=8) | |
| 1246 | { | |
| 1247 | D_ENCRYPT(l,r,i-0); /* 16 */ | |
| 1248 | D_ENCRYPT(r,l,i-2); /* 15 */ | |
| 1249 | D_ENCRYPT(l,r,i-4); /* 14 */ | |
| 1250 | D_ENCRYPT(r,l,i-6); /* 13 */ | |
| 1251 | } | |
| 1252 | #endif | |
| 1253 | } | |
| 1254 | /* rotate and clear the top bits on machines with 8byte longs */ | |
| 1255 | data[0]=ROTATE(l,3)&0xffffffffL; | |
| 1256 | data[1]=ROTATE(r,3)&0xffffffffL; | |
| 1257 | l=r=t=u=0; | |
| 1258 | } | |
| 1259 | ||
| 1260 | /** | |
| 1261 | * Single block 3DES EDE encrypt routine | |
| 1262 | */ | |
| 7daf5226 | 1263 | static void des_encrypt3(DES_LONG *data, des_key_schedule ks1, |
| 462129d3 MW |
1264 | des_key_schedule ks2, des_key_schedule ks3) |
| 1265 | { | |
| 1266 | register DES_LONG l,r; | |
| 1267 | ||
| 1268 | l=data[0]; | |
| 1269 | r=data[1]; | |
| 1270 | IP(l,r); | |
| 1271 | data[0]=l; | |
| 1272 | data[1]=r; | |
| 1273 | des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT); | |
| 1274 | des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT); | |
| 1275 | des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT); | |
| 1276 | l=data[0]; | |
| 1277 | r=data[1]; | |
| 1278 | FP(r,l); | |
| 1279 | data[0]=l; | |
| 1280 | data[1]=r; | |
| 1281 | } | |
| 1282 | ||
| 1283 | /** | |
| 1284 | * Single block 3DES EDE decrypt routine | |
| 1285 | */ | |
| 7daf5226 | 1286 | static void des_decrypt3(DES_LONG *data, des_key_schedule ks1, |
| 462129d3 MW |
1287 | des_key_schedule ks2, des_key_schedule ks3) |
| 1288 | { | |
| 1289 | register DES_LONG l,r; | |
| 1290 | ||
| 1291 | l=data[0]; | |
| 1292 | r=data[1]; | |
| 1293 | IP(l,r); | |
| 1294 | data[0]=l; | |
| 1295 | data[1]=r; | |
| 1296 | des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT); | |
| 1297 | des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT); | |
| 1298 | des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT); | |
| 1299 | l=data[0]; | |
| 1300 | r=data[1]; | |
| 1301 | FP(r,l); | |
| 1302 | data[0]=l; | |
| 1303 | data[1]=r; | |
| 1304 | } | |
| 1305 | ||
| 1306 | /** | |
| 1307 | * 3DES EDE CBC encrypt/decrypt routine | |
| 1308 | */ | |
| 1309 | static void des_ede3_cbc_encrypt(des_cblock *input, des_cblock *output, long length, | |
| 1310 | des_key_schedule ks1, des_key_schedule ks2, | |
| 1311 | des_key_schedule ks3, des_cblock *ivec, int enc) | |
| 1312 | { | |
| 1313 | register DES_LONG tin0,tin1; | |
| 1314 | register DES_LONG tout0,tout1,xor0,xor1; | |
| 1315 | register unsigned char *in,*out; | |
| 1316 | register long l=length; | |
| 1317 | DES_LONG tin[2]; | |
| 1318 | unsigned char *iv; | |
| 1319 | ||
| 1320 | in=(unsigned char *)input; | |
| 1321 | out=(unsigned char *)output; | |
| 1322 | iv=(unsigned char *)ivec; | |
| 1323 | ||
| 1324 | if (enc) | |
| 1325 | { | |
| 1326 | c2l(iv,tout0); | |
| 1327 | c2l(iv,tout1); | |
| 1328 | for (l-=8; l>=0; l-=8) | |
| 1329 | { | |
| 1330 | c2l(in,tin0); | |
| 1331 | c2l(in,tin1); | |
| 1332 | tin0^=tout0; | |
| 1333 | tin1^=tout1; | |
| 1334 | ||
| 1335 | tin[0]=tin0; | |
| 1336 | tin[1]=tin1; | |
| 1337 | des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); | |
| 1338 | tout0=tin[0]; | |
| 1339 | tout1=tin[1]; | |
| 1340 | ||
| 1341 | l2c(tout0,out); | |
| 1342 | l2c(tout1,out); | |
| 1343 | } | |
| 1344 | if (l != -8) | |
| 1345 | { | |
| 1346 | c2ln(in,tin0,tin1,l+8); | |
| 1347 | tin0^=tout0; | |
| 1348 | tin1^=tout1; | |
| 1349 | ||
| 1350 | tin[0]=tin0; | |
| 1351 | tin[1]=tin1; | |
| 1352 | des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3); | |
| 1353 | tout0=tin[0]; | |
| 1354 | tout1=tin[1]; | |
| 1355 | ||
| 1356 | l2c(tout0,out); | |
| 1357 | l2c(tout1,out); | |
| 1358 | } | |
| 1359 | iv=(unsigned char *)ivec; | |
| 1360 | l2c(tout0,iv); | |
| 1361 | l2c(tout1,iv); | |
| 1362 | } | |
| 1363 | else | |
| 1364 | { | |
| 1365 | register DES_LONG t0,t1; | |
| 1366 | ||
| 1367 | c2l(iv,xor0); | |
| 1368 | c2l(iv,xor1); | |
| 1369 | for (l-=8; l>=0; l-=8) | |
| 1370 | { | |
| 1371 | c2l(in,tin0); | |
| 1372 | c2l(in,tin1); | |
| 1373 | ||
| 1374 | t0=tin0; | |
| 1375 | t1=tin1; | |
| 1376 | ||
| 1377 | tin[0]=tin0; | |
| 1378 | tin[1]=tin1; | |
| 1379 | des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); | |
| 1380 | tout0=tin[0]; | |
| 1381 | tout1=tin[1]; | |
| 1382 | ||
| 1383 | tout0^=xor0; | |
| 1384 | tout1^=xor1; | |
| 1385 | l2c(tout0,out); | |
| 1386 | l2c(tout1,out); | |
| 1387 | xor0=t0; | |
| 1388 | xor1=t1; | |
| 1389 | } | |
| 1390 | if (l != -8) | |
| 1391 | { | |
| 1392 | c2l(in,tin0); | |
| 1393 | c2l(in,tin1); | |
| 7daf5226 | 1394 | |
| 462129d3 MW |
1395 | t0=tin0; |
| 1396 | t1=tin1; | |
| 1397 | ||
| 1398 | tin[0]=tin0; | |
| 1399 | tin[1]=tin1; | |
| 1400 | des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3); | |
| 1401 | tout0=tin[0]; | |
| 1402 | tout1=tin[1]; | |
| 7daf5226 | 1403 | |
| 462129d3 MW |
1404 | tout0^=xor0; |
| 1405 | tout1^=xor1; | |
| 1406 | l2cn(tout0,tout1,out,l+8); | |
| 1407 | xor0=t0; | |
| 1408 | xor1=t1; | |
| 1409 | } | |
| 1410 | ||
| 1411 | iv=(unsigned char *)ivec; | |
| 1412 | l2c(xor0,iv); | |
| 1413 | l2c(xor1,iv); | |
| 1414 | } | |
| 1415 | tin0=tin1=tout0=tout1=xor0=xor1=0; | |
| 1416 | tin[0]=tin[1]=0; | |
| 1417 | } | |
| 1418 | ||
| 3b96189a | 1419 | METHOD(crypter_t, decrypt, bool, |
| af403caf | 1420 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *decrypted) |
| 462129d3 MW |
1421 | { |
| 1422 | des_cblock ivb; | |
| b12c53ce | 1423 | uint8_t *out; |
| 7daf5226 | 1424 | |
| f5475fa4 MW |
1425 | out = data.ptr; |
| 1426 | if (decrypted) | |
| 1427 | { | |
| 1428 | *decrypted = chunk_alloc(data.len); | |
| 4ce78f93 | 1429 | out = decrypted->ptr; |
| f5475fa4 | 1430 | } |
| 462129d3 | 1431 | memcpy(&ivb, iv.ptr, sizeof(des_cblock)); |
| f5475fa4 | 1432 | des_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, |
| 462129d3 | 1433 | data.len, this->ks, &ivb, DES_DECRYPT); |
| 3b96189a | 1434 | return TRUE; |
| 462129d3 MW |
1435 | } |
| 1436 | ||
| 1437 | ||
| e35abbe5 | 1438 | METHOD(crypter_t, encrypt, bool, |
| af403caf | 1439 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *encrypted) |
| 462129d3 MW |
1440 | { |
| 1441 | des_cblock ivb; | |
| b12c53ce | 1442 | uint8_t *out; |
| 7daf5226 | 1443 | |
| f5475fa4 MW |
1444 | out = data.ptr; |
| 1445 | if (encrypted) | |
| 1446 | { | |
| 1447 | *encrypted = chunk_alloc(data.len); | |
| 4ce78f93 | 1448 | out = encrypted->ptr; |
| f5475fa4 | 1449 | } |
| 462129d3 | 1450 | memcpy(&ivb, iv.ptr, sizeof(des_cblock)); |
| f5475fa4 | 1451 | des_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, |
| 462129d3 | 1452 | data.len, this->ks, &ivb, DES_ENCRYPT); |
| e35abbe5 | 1453 | return TRUE; |
| 462129d3 MW |
1454 | } |
| 1455 | ||
| 3b96189a | 1456 | METHOD(crypter_t, decrypt_ecb, bool, |
| af403caf | 1457 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *decrypted) |
| 7b767025 | 1458 | { |
| b12c53ce | 1459 | uint8_t *out; |
| 7daf5226 | 1460 | |
| 7b767025 TB |
1461 | out = data.ptr; |
| 1462 | if (decrypted) | |
| 1463 | { | |
| 1464 | *decrypted = chunk_alloc(data.len); | |
| 1465 | out = decrypted->ptr; | |
| 1466 | } | |
| 1467 | des_ecb_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, | |
| 1468 | data.len, this->ks, DES_DECRYPT); | |
| 3b96189a | 1469 | return TRUE; |
| 7b767025 TB |
1470 | } |
| 1471 | ||
| e35abbe5 | 1472 | METHOD(crypter_t, encrypt_ecb, bool, |
| af403caf | 1473 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *encrypted) |
| 7b767025 | 1474 | { |
| b12c53ce | 1475 | uint8_t *out; |
| 7daf5226 | 1476 | |
| 7b767025 TB |
1477 | out = data.ptr; |
| 1478 | if (encrypted) | |
| 1479 | { | |
| 1480 | *encrypted = chunk_alloc(data.len); | |
| 1481 | out = encrypted->ptr; | |
| 1482 | } | |
| 1483 | des_ecb_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, | |
| 1484 | data.len, this->ks, DES_ENCRYPT); | |
| e35abbe5 | 1485 | return TRUE; |
| 7b767025 TB |
1486 | } |
| 1487 | ||
| 3b96189a | 1488 | METHOD(crypter_t, decrypt3, bool, |
| af403caf | 1489 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *decrypted) |
| 462129d3 MW |
1490 | { |
| 1491 | des_cblock ivb; | |
| b12c53ce | 1492 | uint8_t *out; |
| 7daf5226 | 1493 | |
| f5475fa4 MW |
1494 | out = data.ptr; |
| 1495 | if (decrypted) | |
| 1496 | { | |
| 1497 | *decrypted = chunk_alloc(data.len); | |
| 4ce78f93 | 1498 | out = decrypted->ptr; |
| f5475fa4 | 1499 | } |
| 462129d3 | 1500 | memcpy(&ivb, iv.ptr, sizeof(des_cblock)); |
| f5475fa4 | 1501 | des_ede3_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, |
| 462129d3 MW |
1502 | data.len, this->ks3[0], this->ks3[1], this->ks3[2], |
| 1503 | &ivb, DES_DECRYPT); | |
| 3b96189a | 1504 | return TRUE; |
| 462129d3 MW |
1505 | } |
| 1506 | ||
| e35abbe5 | 1507 | METHOD(crypter_t, encrypt3, bool, |
| af403caf | 1508 | private_des_crypter_t *this, chunk_t data, chunk_t iv, chunk_t *encrypted) |
| 462129d3 MW |
1509 | { |
| 1510 | des_cblock ivb; | |
| b12c53ce | 1511 | uint8_t *out; |
| 7daf5226 | 1512 | |
| f5475fa4 MW |
1513 | out = data.ptr; |
| 1514 | if (encrypted) | |
| 1515 | { | |
| 1516 | *encrypted = chunk_alloc(data.len); | |
| 4ce78f93 | 1517 | out = encrypted->ptr; |
| f5475fa4 | 1518 | } |
| 462129d3 | 1519 | memcpy(&ivb, iv.ptr, sizeof(des_cblock)); |
| f5475fa4 | 1520 | des_ede3_cbc_encrypt((des_cblock*)(data.ptr), (des_cblock*)out, |
| 462129d3 MW |
1521 | data.len, this->ks3[0], this->ks3[1], this->ks3[2], |
| 1522 | &ivb, DES_ENCRYPT); | |
| e35abbe5 | 1523 | return TRUE; |
| 462129d3 MW |
1524 | } |
| 1525 | ||
| af403caf MW |
1526 | METHOD(crypter_t, get_block_size, size_t, |
| 1527 | private_des_crypter_t *this) | |
| 462129d3 MW |
1528 | { |
| 1529 | return sizeof(des_cblock); | |
| 1530 | } | |
| 1531 | ||
| f7c04c5b MW |
1532 | METHOD(crypter_t, get_iv_size, size_t, |
| 1533 | private_des_crypter_t *this) | |
| 1534 | { | |
| 1535 | return sizeof(des_cblock); | |
| 1536 | } | |
| 1537 | ||
| af403caf MW |
1538 | METHOD(crypter_t, get_key_size, size_t, |
| 1539 | private_des_crypter_t *this) | |
| 462129d3 MW |
1540 | { |
| 1541 | return this->key_size; | |
| 1542 | } | |
| 1543 | ||
| ce73fc19 | 1544 | METHOD(crypter_t, set_key, bool, |
| af403caf | 1545 | private_des_crypter_t *this, chunk_t key) |
| 462129d3 | 1546 | { |
| 462129d3 | 1547 | des_set_key((des_cblock*)(key.ptr), &this->ks); |
| ce73fc19 | 1548 | return TRUE; |
| 462129d3 MW |
1549 | } |
| 1550 | ||
| ce73fc19 | 1551 | METHOD(crypter_t, set_key3, bool, |
| af403caf | 1552 | private_des_crypter_t *this, chunk_t key) |
| 7daf5226 | 1553 | { |
| 462129d3 MW |
1554 | des_set_key((des_cblock*)(key.ptr) + 0, &this->ks3[0]); |
| 1555 | des_set_key((des_cblock*)(key.ptr) + 1, &this->ks3[1]); | |
| 1556 | des_set_key((des_cblock*)(key.ptr) + 2, &this->ks3[2]); | |
| ce73fc19 | 1557 | return TRUE; |
| 462129d3 MW |
1558 | } |
| 1559 | ||
| af403caf MW |
1560 | METHOD(crypter_t, destroy, void, |
| 1561 | private_des_crypter_t *this) | |
| 462129d3 | 1562 | { |
| f7812f64 | 1563 | memwipe(this, sizeof(*this)); |
| 462129d3 MW |
1564 | free(this); |
| 1565 | } | |
| 1566 | ||
| 1567 | /* | |
| 1568 | * Described in header | |
| 1569 | */ | |
| 1570 | des_crypter_t *des_crypter_create(encryption_algorithm_t algo) | |
| 1571 | { | |
| af403caf | 1572 | private_des_crypter_t *this; |
| 7daf5226 | 1573 | |
| af403caf | 1574 | INIT(this, |
| ba31fe1f MW |
1575 | .public = { |
| 1576 | .crypter = { | |
| 1577 | .get_block_size = _get_block_size, | |
| 1578 | .get_iv_size = _get_iv_size, | |
| 1579 | .get_key_size = _get_key_size, | |
| 1580 | .destroy = _destroy, | |
| 1581 | }, | |
| af403caf MW |
1582 | }, |
| 1583 | ); | |
| 7daf5226 | 1584 | |
| 462129d3 MW |
1585 | /* use functions depending on algorithm */ |
| 1586 | switch (algo) | |
| 1587 | { | |
| 1588 | case ENCR_DES: | |
| 1589 | this->key_size = sizeof(des_cblock); | |
| af403caf MW |
1590 | this->public.crypter.set_key = _set_key; |
| 1591 | this->public.crypter.encrypt = _encrypt; | |
| 1592 | this->public.crypter.decrypt = _decrypt; | |
| 462129d3 MW |
1593 | break; |
| 1594 | case ENCR_3DES: | |
| 1595 | this->key_size = 3 * sizeof(des_cblock); | |
| af403caf MW |
1596 | this->public.crypter.set_key = _set_key3; |
| 1597 | this->public.crypter.encrypt = _encrypt3; | |
| 1598 | this->public.crypter.decrypt = _decrypt3; | |
| 462129d3 | 1599 | break; |
| 7b767025 TB |
1600 | case ENCR_DES_ECB: |
| 1601 | this->key_size = sizeof(des_cblock); | |
| af403caf MW |
1602 | this->public.crypter.set_key = _set_key; |
| 1603 | this->public.crypter.encrypt = _encrypt_ecb; | |
| 1604 | this->public.crypter.decrypt = _decrypt_ecb; | |
| 7b767025 | 1605 | break; |
| 462129d3 MW |
1606 | default: |
| 1607 | free(this); | |
| 1608 | return NULL; | |
| 1609 | } | |
| 4d181759 | 1610 | return &this->public; |
| 462129d3 | 1611 | } |