des_cbc.S revision 1.2
1 /* $NetBSD: des_cbc.S,v 1.2 2002/11/12 03:03:11 itohy Exp $ */ 2 3 /* Copyright (C) 1995-1997 Eric Young (eay (at) cryptsoft.com) 4 * All rights reserved. 5 * 6 * This package is an SSL implementation written 7 * by Eric Young (eay (at) cryptsoft.com). 8 * The implementation was written so as to conform with Netscapes SSL. 9 * 10 * This library is free for commercial and non-commercial use as long as 11 * the following conditions are aheared to. The following conditions 12 * apply to all code found in this distribution, be it the RC4, RSA, 13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 14 * included with this distribution is covered by the same copyright terms 15 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 16 * 17 * Copyright remains Eric Young's, and as such any Copyright notices in 18 * the code are not to be removed. 19 * If this package is used in a product, Eric Young should be given attribution 20 * as the author of the parts of the library used. 21 * This can be in the form of a textual message at program startup or 22 * in documentation (online or textual) provided with the package. 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * "This product includes cryptographic software written by 35 * Eric Young (eay (at) cryptsoft.com)" 36 * The word 'cryptographic' can be left out if the rouines from the library 37 * being used are not cryptographic related :-). 38 * 4. If you include any Windows specific code (or a derivative thereof) from 39 * the apps directory (application code) you must include an acknowledgement: 40 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 41 * 42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * 54 * The licence and distribution terms for any publically available version or 55 * derivative of this code cannot be changed. i.e. this code cannot simply be 56 * copied and put under another distribution licence 57 * [including the GNU Public Licence.] 58 */ 59 60 /* 61 * Modified from the output of `perl des686.pl elf' by 62 * Thor Lancelot Simon <tls (at) netbsd.org> 63 */ 64 65 #include <i386/include/asm.h> 66 67 ENTRY(des_ncbc_encrypt) 68 69 pushl %ebp 70 pushl %ebx 71 pushl %esi 72 pushl %edi 73 movl 28(%esp), %ebp 74 # getting iv ptr from parameter 4 75 movl 36(%esp), %ebx 76 movl (%ebx), %esi 77 movl 4(%ebx), %edi 78 pushl %edi 79 pushl %esi 80 pushl %edi 81 pushl %esi 82 movl %esp, %ebx 83 movl 36(%esp), %esi 84 movl 40(%esp), %edi 85 # getting encrypt flag from parameter 5 86 movl 56(%esp), %ecx 87 # get and push parameter 5 88 pushl %ecx 89 # get and push parameter 3 90 movl 52(%esp), %eax 91 pushl %eax 92 pushl %ebx 93 cmpl $0, %ecx 94 jz .L004decrypt 95 andl $4294967288, %ebp 96 movl 12(%esp), %eax 97 movl 16(%esp), %ebx 98 jz .L005encrypt_finish 99 .L006encrypt_loop: 100 movl (%esi), %ecx 101 movl 4(%esi), %edx 102 xorl %ecx, %eax 103 xorl %edx, %ebx 104 movl %eax, 12(%esp) 105 movl %ebx, 16(%esp) 106 call _C_LABEL(des_encrypt1) 107 movl 12(%esp), %eax 108 movl 16(%esp), %ebx 109 movl %eax, (%edi) 110 movl %ebx, 4(%edi) 111 addl $8, %esi 112 addl $8, %edi 113 subl $8, %ebp 114 jnz .L006encrypt_loop 115 .L005encrypt_finish: 116 movl 56(%esp), %ebp 117 andl $7, %ebp 118 jz .L007finish 119 xorl %ecx, %ecx 120 xorl %edx, %edx 121 movl .L008cbc_enc_jmp_table(,%ebp,4),%ebp 122 jmp *%ebp 123 .L009ej7: 124 movb 6(%esi), %dh 125 sall $8, %edx 126 .L010ej6: 127 movb 5(%esi), %dh 128 .L011ej5: 129 movb 4(%esi), %dl 130 .L012ej4: 131 movl (%esi), %ecx 132 jmp .L013ejend 133 .L014ej3: 134 movb 2(%esi), %ch 135 sall $8, %ecx 136 .L015ej2: 137 movb 1(%esi), %ch 138 .L016ej1: 139 movb (%esi), %cl 140 .L013ejend: 141 xorl %ecx, %eax 142 xorl %edx, %ebx 143 movl %eax, 12(%esp) 144 movl %ebx, 16(%esp) 145 call _C_LABEL(des_encrypt1) 146 movl 12(%esp), %eax 147 movl 16(%esp), %ebx 148 movl %eax, (%edi) 149 movl %ebx, 4(%edi) 150 jmp .L007finish 151 #ifdef __ELF__ 152 .align 16 153 #else 154 .align 4 155 #endif 156 .L004decrypt: 157 andl $4294967288, %ebp 158 movl 20(%esp), %eax 159 movl 24(%esp), %ebx 160 jz .L017decrypt_finish 161 .L018decrypt_loop: 162 movl (%esi), %eax 163 movl 4(%esi), %ebx 164 movl %eax, 12(%esp) 165 movl %ebx, 16(%esp) 166 call _C_LABEL(des_encrypt1) 167 movl 12(%esp), %eax 168 movl 16(%esp), %ebx 169 movl 20(%esp), %ecx 170 movl 24(%esp), %edx 171 xorl %eax, %ecx 172 xorl %ebx, %edx 173 movl (%esi), %eax 174 movl 4(%esi), %ebx 175 movl %ecx, (%edi) 176 movl %edx, 4(%edi) 177 movl %eax, 20(%esp) 178 movl %ebx, 24(%esp) 179 addl $8, %esi 180 addl $8, %edi 181 subl $8, %ebp 182 jnz .L018decrypt_loop 183 .L017decrypt_finish: 184 movl 56(%esp), %ebp 185 andl $7, %ebp 186 jz .L007finish 187 movl (%esi), %eax 188 movl 4(%esi), %ebx 189 movl %eax, 12(%esp) 190 movl %ebx, 16(%esp) 191 call _C_LABEL(des_encrypt1) 192 movl 12(%esp), %eax 193 movl 16(%esp), %ebx 194 movl 20(%esp), %ecx 195 movl 24(%esp), %edx 196 xorl %eax, %ecx 197 xorl %ebx, %edx 198 movl (%esi), %eax 199 movl 4(%esi), %ebx 200 .L019dj7: 201 rorl $16, %edx 202 movb %dl, 6(%edi) 203 shrl $16, %edx 204 .L020dj6: 205 movb %dh, 5(%edi) 206 .L021dj5: 207 movb %dl, 4(%edi) 208 .L022dj4: 209 movl %ecx, (%edi) 210 jmp .L023djend 211 .L024dj3: 212 rorl $16, %ecx 213 movb %cl, 2(%edi) 214 sall $16, %ecx 215 .L025dj2: 216 movb %ch, 1(%esi) 217 .L026dj1: 218 movb %cl, (%esi) 219 .L023djend: 220 jmp .L007finish 221 #ifdef __ELF__ 222 .align 16 223 #else 224 .align 4 225 #endif 226 .L007finish: 227 movl 64(%esp), %ecx 228 addl $28, %esp 229 movl %eax, (%ecx) 230 movl %ebx, 4(%ecx) 231 popl %edi 232 popl %esi 233 popl %ebx 234 popl %ebp 235 ret 236 #ifdef __ELF__ 237 .align 16 238 #else 239 .align 4 240 #endif 241 .L008cbc_enc_jmp_table: 242 .long 0 243 .long .L016ej1 244 .long .L015ej2 245 .long .L014ej3 246 .long .L012ej4 247 .long .L011ej5 248 .long .L010ej6 249 .long .L009ej7 250 #ifdef __ELF__ 251 .align 16 252 #else 253 .align 4 254 #endif 255 .L027cbc_dec_jmp_table: 256 .long 0 257 .long .L026dj1 258 .long .L025dj2 259 .long .L024dj3 260 .long .L022dj4 261 .long .L021dj5 262 .long .L020dj6 263 .long .L019dj7 264 .L_des_ncbc_encrypt_end: 265 .size _C_LABEL(des_ncbc_encrypt),.L_des_ncbc_encrypt_end-_C_LABEL(des_ncbc_encrypt) 266 267 ENTRY(des_ede3_cbc_encrypt) 268 269 pushl %ebp 270 pushl %ebx 271 pushl %esi 272 pushl %edi 273 movl 28(%esp), %ebp 274 # getting iv ptr from parameter 6 275 movl 44(%esp), %ebx 276 movl (%ebx), %esi 277 movl 4(%ebx), %edi 278 pushl %edi 279 pushl %esi 280 pushl %edi 281 pushl %esi 282 movl %esp, %ebx 283 movl 36(%esp), %esi 284 movl 40(%esp), %edi 285 # getting encrypt flag from parameter 7 286 movl 64(%esp), %ecx 287 # get and push parameter 5 288 movl 56(%esp), %eax 289 pushl %eax 290 # get and push parameter 4 291 movl 56(%esp), %eax 292 pushl %eax 293 # get and push parameter 3 294 movl 56(%esp), %eax 295 pushl %eax 296 pushl %ebx 297 cmpl $0, %ecx 298 jz .L028decrypt 299 andl $4294967288, %ebp 300 movl 16(%esp), %eax 301 movl 20(%esp), %ebx 302 jz .L029encrypt_finish 303 .L030encrypt_loop: 304 movl (%esi), %ecx 305 movl 4(%esi), %edx 306 xorl %ecx, %eax 307 xorl %edx, %ebx 308 movl %eax, 16(%esp) 309 movl %ebx, 20(%esp) 310 call _C_LABEL(des_encrypt3) 311 movl 16(%esp), %eax 312 movl 20(%esp), %ebx 313 movl %eax, (%edi) 314 movl %ebx, 4(%edi) 315 addl $8, %esi 316 addl $8, %edi 317 subl $8, %ebp 318 jnz .L030encrypt_loop 319 .L029encrypt_finish: 320 movl 60(%esp), %ebp 321 andl $7, %ebp 322 jz .L031finish 323 xorl %ecx, %ecx 324 xorl %edx, %edx 325 movl .L032cbc_enc_jmp_table(,%ebp,4),%ebp 326 jmp *%ebp 327 .L033ej7: 328 movb 6(%esi), %dh 329 sall $8, %edx 330 .L034ej6: 331 movb 5(%esi), %dh 332 .L035ej5: 333 movb 4(%esi), %dl 334 .L036ej4: 335 movl (%esi), %ecx 336 jmp .L037ejend 337 .L038ej3: 338 movb 2(%esi), %ch 339 sall $8, %ecx 340 .L039ej2: 341 movb 1(%esi), %ch 342 .L040ej1: 343 movb (%esi), %cl 344 .L037ejend: 345 xorl %ecx, %eax 346 xorl %edx, %ebx 347 movl %eax, 16(%esp) 348 movl %ebx, 20(%esp) 349 call _C_LABEL(des_encrypt3) 350 movl 16(%esp), %eax 351 movl 20(%esp), %ebx 352 movl %eax, (%edi) 353 movl %ebx, 4(%edi) 354 jmp .L031finish 355 #ifdef __ELF__ 356 .align 16 357 #else 358 .align 4 359 #endif 360 .L028decrypt: 361 andl $4294967288, %ebp 362 movl 24(%esp), %eax 363 movl 28(%esp), %ebx 364 jz .L041decrypt_finish 365 .L042decrypt_loop: 366 movl (%esi), %eax 367 movl 4(%esi), %ebx 368 movl %eax, 16(%esp) 369 movl %ebx, 20(%esp) 370 call _C_LABEL(des_decrypt3) 371 movl 16(%esp), %eax 372 movl 20(%esp), %ebx 373 movl 24(%esp), %ecx 374 movl 28(%esp), %edx 375 xorl %eax, %ecx 376 xorl %ebx, %edx 377 movl (%esi), %eax 378 movl 4(%esi), %ebx 379 movl %ecx, (%edi) 380 movl %edx, 4(%edi) 381 movl %eax, 24(%esp) 382 movl %ebx, 28(%esp) 383 addl $8, %esi 384 addl $8, %edi 385 subl $8, %ebp 386 jnz .L042decrypt_loop 387 .L041decrypt_finish: 388 movl 60(%esp), %ebp 389 andl $7, %ebp 390 jz .L031finish 391 movl (%esi), %eax 392 movl 4(%esi), %ebx 393 movl %eax, 16(%esp) 394 movl %ebx, 20(%esp) 395 call _C_LABEL(des_decrypt3) 396 movl 16(%esp), %eax 397 movl 20(%esp), %ebx 398 movl 24(%esp), %ecx 399 movl 28(%esp), %edx 400 xorl %eax, %ecx 401 xorl %ebx, %edx 402 movl (%esi), %eax 403 movl 4(%esi), %ebx 404 .L043dj7: 405 rorl $16, %edx 406 movb %dl, 6(%edi) 407 shrl $16, %edx 408 .L044dj6: 409 movb %dh, 5(%edi) 410 .L045dj5: 411 movb %dl, 4(%edi) 412 .L046dj4: 413 movl %ecx, (%edi) 414 jmp .L047djend 415 .L048dj3: 416 rorl $16, %ecx 417 movb %cl, 2(%edi) 418 sall $16, %ecx 419 .L049dj2: 420 movb %ch, 1(%esi) 421 .L050dj1: 422 movb %cl, (%esi) 423 .L047djend: 424 jmp .L031finish 425 #ifdef __ELF__ 426 .align 16 427 #else 428 .align 4 429 #endif 430 .L031finish: 431 movl 76(%esp), %ecx 432 addl $32, %esp 433 movl %eax, (%ecx) 434 movl %ebx, 4(%ecx) 435 popl %edi 436 popl %esi 437 popl %ebx 438 popl %ebp 439 ret 440 #ifdef __ELF__ 441 .align 16 442 #else 443 .align 4 444 #endif 445 .L032cbc_enc_jmp_table: 446 .long 0 447 .long .L040ej1 448 .long .L039ej2 449 .long .L038ej3 450 .long .L036ej4 451 .long .L035ej5 452 .long .L034ej6 453 .long .L033ej7 454 #ifdef __ELF__ 455 .align 16 456 #else 457 .align 4 458 #endif 459 .L051cbc_dec_jmp_table: 460 .long 0 461 .long .L050dj1 462 .long .L049dj2 463 .long .L048dj3 464 .long .L046dj4 465 .long .L045dj5 466 .long .L044dj6 467 .long .L043dj7 468 .L_des_ede3_cbc_encrypt_end: 469 .size _C_LABEL(des_ede3_cbc_encrypt),.L_des_ede3_cbc_encrypt_end-_C_LABEL(des_ede3_cbc_encrypt) 470
Indexes created Thu Oct 02 14:10:14 GMT 2025