| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: cbc-def.h,v 1.3 2001/06/17 00:10:51 mdw Exp $ |
| 4 | * |
| 5 | * Definitions for cipher block chaining mode |
| 6 | * |
| 7 | * (c) 1999 Straylight/Edgeware |
| 8 | */ |
| 9 | |
| 10 | /*----- Licensing notice --------------------------------------------------* |
| 11 | * |
| 12 | * This file is part of Catacomb. |
| 13 | * |
| 14 | * Catacomb is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU Library General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of the |
| 17 | * License, or (at your option) any later version. |
| 18 | * |
| 19 | * Catacomb is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU Library General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU Library General Public |
| 25 | * License along with Catacomb; if not, write to the Free |
| 26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 27 | * MA 02111-1307, USA. |
| 28 | */ |
| 29 | |
| 30 | /*----- Revision history --------------------------------------------------* |
| 31 | * |
| 32 | * $Log: cbc-def.h,v $ |
| 33 | * Revision 1.3 2001/06/17 00:10:51 mdw |
| 34 | * Typesetting fixes |
| 35 | * |
| 36 | * Revision 1.2 2000/06/17 10:49:52 mdw |
| 37 | * Use secure arena for memory allocation. |
| 38 | * |
| 39 | * Revision 1.1 1999/12/10 23:16:39 mdw |
| 40 | * Split mode macros into interface and implementation. |
| 41 | * |
| 42 | */ |
| 43 | |
| 44 | #ifndef CATACOMB_CBC_DEF_H |
| 45 | #define CATACOMB_CBC_DEF_H |
| 46 | |
| 47 | #ifdef __cplusplus |
| 48 | extern "C" { |
| 49 | #endif |
| 50 | |
| 51 | /*----- Header files ------------------------------------------------------*/ |
| 52 | |
| 53 | #include <string.h> |
| 54 | |
| 55 | #include <mLib/bits.h> |
| 56 | #include <mLib/sub.h> |
| 57 | |
| 58 | #ifndef CATACOMB_ARENA_H |
| 59 | # include "arena.h" |
| 60 | #endif |
| 61 | |
| 62 | #ifndef CATACOMB_BLKC_H |
| 63 | # include "blkc.h" |
| 64 | #endif |
| 65 | |
| 66 | #ifndef CATACOMB_GCIPHER_H |
| 67 | # include "gcipher.h" |
| 68 | #endif |
| 69 | |
| 70 | #ifndef CATACOMB_PARANOIA_H |
| 71 | # include "paranoia.h" |
| 72 | #endif |
| 73 | |
| 74 | /*----- Macros ------------------------------------------------------------*/ |
| 75 | |
| 76 | /* --- @CBC_DEF@ --- * |
| 77 | * |
| 78 | * Arguments: @PRE@, @pre@ = prefixes for the underlying block cipher |
| 79 | * |
| 80 | * Use: Creates an implementation for CBC stealing mode. |
| 81 | */ |
| 82 | |
| 83 | #define CBC_DEF(PRE, pre) \ |
| 84 | \ |
| 85 | /* --- @pre_cbcgetiv@ --- * \ |
| 86 | * \ |
| 87 | * Arguments: @const pre_cbcctx *ctx@ = pointer to CBC context block \ |
| 88 | * @void *iv@ = pointer to output data block \ |
| 89 | * \ |
| 90 | * Returns: --- \ |
| 91 | * \ |
| 92 | * Use: Reads the currently set IV. Reading and setting an IV \ |
| 93 | * is transparent to the CBC encryption or decryption \ |
| 94 | * process. \ |
| 95 | */ \ |
| 96 | \ |
| 97 | void pre##_cbcgetiv(const pre##_cbcctx *ctx, void *iv) \ |
| 98 | { \ |
| 99 | BLKC_STORE(PRE, iv, ctx->iv); \ |
| 100 | } \ |
| 101 | \ |
| 102 | /* --- @pre_cbcsetiv@ --- * \ |
| 103 | * \ |
| 104 | * Arguments: @pre_cbcctx *ctx@ = pointer to CBC context block \ |
| 105 | * @cnost void *iv@ = pointer to IV to set \ |
| 106 | * \ |
| 107 | * Returns: --- \ |
| 108 | * \ |
| 109 | * Use: Sets the IV to use for subsequent encryption. \ |
| 110 | */ \ |
| 111 | \ |
| 112 | void pre##_cbcsetiv(pre##_cbcctx *ctx, const void *iv) \ |
| 113 | { \ |
| 114 | BLKC_LOAD(PRE, ctx->iv, iv); \ |
| 115 | } \ |
| 116 | \ |
| 117 | /* --- @pre_cbcsetkey@ --- * \ |
| 118 | * \ |
| 119 | * Arguments: @pre_cbcctx *ctx@ = pointer to CBC context block \ |
| 120 | * @const pre_ctx *k@ = pointer to cipher context \ |
| 121 | * \ |
| 122 | * Returns: --- \ |
| 123 | * \ |
| 124 | * Use: Sets the CBC context to use a different cipher key. \ |
| 125 | */ \ |
| 126 | \ |
| 127 | void pre##_cbcsetkey(pre##_cbcctx *ctx, const pre##_ctx *k) \ |
| 128 | { \ |
| 129 | ctx->ctx = *k; \ |
| 130 | } \ |
| 131 | \ |
| 132 | /* --- @pre_cbcinit@ --- * \ |
| 133 | * \ |
| 134 | * Arguments: @pre_cbcctx *ctx@ = pointer to cipher context \ |
| 135 | * @const void *key@ = pointer to the key buffer \ |
| 136 | * @size_t sz@ = size of the key \ |
| 137 | * @const void *iv@ = pointer to initialization vector \ |
| 138 | * \ |
| 139 | * Returns: --- \ |
| 140 | * \ |
| 141 | * Use: Initializes a CBC context ready for use. The @iv@ \ |
| 142 | * argument may be passed as a null pointer to set a zero \ |
| 143 | * IV. Apart from that, this call is equivalent to calls \ |
| 144 | * to @pre_init@, @pre_cbcsetkey@ and @pre_cbcsetiv@. \ |
| 145 | */ \ |
| 146 | \ |
| 147 | void pre##_cbcinit(pre##_cbcctx *ctx, \ |
| 148 | const void *key, size_t sz, \ |
| 149 | const void *iv) \ |
| 150 | { \ |
| 151 | static octet zero[PRE##_BLKSZ] = { 0 }; \ |
| 152 | pre##_init(&ctx->ctx, key, sz); \ |
| 153 | BLKC_LOAD(PRE, ctx->iv, iv ? iv : zero); \ |
| 154 | } \ |
| 155 | \ |
| 156 | /* --- @pre_cbcencrypt@ --- * \ |
| 157 | * \ |
| 158 | * Arguments: @pre_cbcctx *ctx@ = pointer to CBC context block \ |
| 159 | * @const void *src@ = pointer to source data \ |
| 160 | * @void *dest@ = pointer to destination data \ |
| 161 | * @size_t sz@ = size of block to be encrypted \ |
| 162 | * \ |
| 163 | * Returns: --- \ |
| 164 | * \ |
| 165 | * Use: Encrypts a block with a block cipher in CBC mode, with \ |
| 166 | * ciphertext stealing and other clever tricks. \ |
| 167 | * Essentially, data can be encrypted in arbitrary sized \ |
| 168 | * chunks, although decryption must use the same chunks. \ |
| 169 | */ \ |
| 170 | \ |
| 171 | void pre##_cbcencrypt(pre##_cbcctx *ctx, \ |
| 172 | const void *src, void *dest, \ |
| 173 | size_t sz) \ |
| 174 | { \ |
| 175 | const octet *s = src; \ |
| 176 | octet *d = dest; \ |
| 177 | \ |
| 178 | /* --- Empty blocks are trivial --- */ \ |
| 179 | \ |
| 180 | if (!sz) \ |
| 181 | return; \ |
| 182 | \ |
| 183 | /* --- Extra magical case for a short block --- * \ |
| 184 | * \ |
| 185 | * Encrypt the IV, then exclusive-or the plaintext with the octets \ |
| 186 | * of the encrypted IV, shifting ciphertext octets in instead. This \ |
| 187 | * basically switches over to CFB. \ |
| 188 | */ \ |
| 189 | \ |
| 190 | if (sz < PRE##_BLKSZ) { \ |
| 191 | octet b[PRE##_BLKSZ]; \ |
| 192 | unsigned i; \ |
| 193 | \ |
| 194 | pre##_eblk(&ctx->ctx, ctx->iv, ctx->iv); \ |
| 195 | BLKC_STORE(PRE, b, ctx->iv); \ |
| 196 | for (i = 0; i < sz; i++) \ |
| 197 | d[i] = b[i] ^ s[i]; \ |
| 198 | memmove(b, b + sz, PRE##_BLKSZ - sz); \ |
| 199 | memcpy(b + PRE##_BLKSZ - sz, d, sz); \ |
| 200 | BLKC_LOAD(PRE, ctx->iv, b); \ |
| 201 | return; \ |
| 202 | } \ |
| 203 | \ |
| 204 | /* --- Do the main chunk of encryption --- * \ |
| 205 | * \ |
| 206 | * This will do the whole lot if it's a whole number of blocks. For \ |
| 207 | * each block, XOR it with the previous ciphertext in @iv@, encrypt, \ |
| 208 | * and keep a copy of the ciphertext for the next block. \ |
| 209 | */ \ |
| 210 | \ |
| 211 | while (sz >= 2 * PRE##_BLKSZ || sz == PRE##_BLKSZ) { \ |
| 212 | BLKC_XLOAD(PRE, ctx->iv, s); \ |
| 213 | pre##_eblk(&ctx->ctx, ctx->iv, ctx->iv); \ |
| 214 | BLKC_STORE(PRE, d, ctx->iv); \ |
| 215 | s += PRE##_BLKSZ; \ |
| 216 | d += PRE##_BLKSZ; \ |
| 217 | sz -= PRE##_BLKSZ; \ |
| 218 | } \ |
| 219 | \ |
| 220 | /* --- Do the tail-end block and bit-left-over --- * \ |
| 221 | * \ |
| 222 | * This isn't very efficient. That shouldn't matter much. \ |
| 223 | */ \ |
| 224 | \ |
| 225 | if (sz) { \ |
| 226 | octet b[PRE##_BLKSZ]; \ |
| 227 | unsigned i; \ |
| 228 | \ |
| 229 | /* --- Let @sz@ be the size of the partial block --- */ \ |
| 230 | \ |
| 231 | sz -= PRE##_BLKSZ; \ |
| 232 | \ |
| 233 | /* --- First stage --- * \ |
| 234 | * \ |
| 235 | * XOR the complete block with the current IV, and encrypt it. The \ |
| 236 | * first part of the result is the partial ciphertext block. Don't \ |
| 237 | * write that out yet, because I've not read the partial plaintext \ |
| 238 | * block. \ |
| 239 | */ \ |
| 240 | \ |
| 241 | BLKC_XLOAD(PRE, ctx->iv, s); \ |
| 242 | pre##_eblk(&ctx->ctx, ctx->iv, ctx->iv); \ |
| 243 | BLKC_STORE(PRE, b, ctx->iv); \ |
| 244 | \ |
| 245 | /* --- Second stage --- * \ |
| 246 | * \ |
| 247 | * Now XOR in the partial plaintext block, writing out the \ |
| 248 | * ciphertext as I go. Then encrypt, and write the complete \ |
| 249 | * ciphertext block. \ |
| 250 | */ \ |
| 251 | \ |
| 252 | s += PRE##_BLKSZ; \ |
| 253 | d += PRE##_BLKSZ; \ |
| 254 | for (i = 0; i < sz; i++) { \ |
| 255 | register octet x = b[i]; \ |
| 256 | b[i] ^= s[i]; \ |
| 257 | d[i] = x; \ |
| 258 | } \ |
| 259 | BLKC_LOAD(PRE, ctx->iv, b); \ |
| 260 | pre##_eblk(&ctx->ctx, ctx->iv, ctx->iv); \ |
| 261 | BLKC_STORE(PRE, d - PRE##_BLKSZ, ctx->iv); \ |
| 262 | } \ |
| 263 | \ |
| 264 | /* --- Done --- */ \ |
| 265 | \ |
| 266 | return; \ |
| 267 | } \ |
| 268 | \ |
| 269 | /* --- @pre_cbcdecrypt@ --- * \ |
| 270 | * \ |
| 271 | * Arguments: @pre_cbcctx *ctx@ = pointer to CBC context block \ |
| 272 | * @const void *src@ = pointer to source data \ |
| 273 | * @void *dest@ = pointer to destination data \ |
| 274 | * @size_t sz@ = size of block to be encrypted \ |
| 275 | * \ |
| 276 | * Returns: --- \ |
| 277 | * \ |
| 278 | * Use: Decrypts a block with a block cipher in CBC mode, with \ |
| 279 | * ciphertext stealing and other clever tricks. \ |
| 280 | * Essentially, data can be encrypted in arbitrary sized \ |
| 281 | * chunks, although decryption must use the same chunks. \ |
| 282 | */ \ |
| 283 | \ |
| 284 | void pre##_cbcdecrypt(pre##_cbcctx *ctx, \ |
| 285 | const void *src, void *dest, \ |
| 286 | size_t sz) \ |
| 287 | { \ |
| 288 | const octet *s = src; \ |
| 289 | octet *d = dest; \ |
| 290 | \ |
| 291 | /* --- Empty blocks are trivial --- */ \ |
| 292 | \ |
| 293 | if (!sz) \ |
| 294 | return; \ |
| 295 | \ |
| 296 | /* --- Extra magical case for a short block --- * \ |
| 297 | * \ |
| 298 | * Encrypt the IV, then exclusive-or the ciphertext with the octets \ |
| 299 | * of the encrypted IV, shifting ciphertext octets in instead. This \ |
| 300 | * basically switches over to CFB. \ |
| 301 | */ \ |
| 302 | \ |
| 303 | if (sz < PRE##_BLKSZ) { \ |
| 304 | octet b[PRE##_BLKSZ], c[PRE##_BLKSZ]; \ |
| 305 | unsigned i; \ |
| 306 | \ |
| 307 | pre##_eblk(&ctx->ctx, ctx->iv, ctx->iv); \ |
| 308 | BLKC_STORE(PRE, b, ctx->iv); \ |
| 309 | for (i = 0; i < sz; i++) { \ |
| 310 | register octet x = s[i]; \ |
| 311 | d[i] = b[i] ^ x; \ |
| 312 | c[i] = x; \ |
| 313 | } \ |
| 314 | memmove(b, b + sz, PRE##_BLKSZ - sz); \ |
| 315 | memcpy(b + PRE##_BLKSZ - sz, c, sz); \ |
| 316 | BLKC_LOAD(PRE, ctx->iv, b); \ |
| 317 | return; \ |
| 318 | } \ |
| 319 | \ |
| 320 | /* --- Do the main chunk of decryption --- * \ |
| 321 | * \ |
| 322 | * This will do the whole lot if it's a whole number of blocks. For \ |
| 323 | * each block, decrypt, XOR it with the previous ciphertext in @iv@, \ |
| 324 | * and keep a copy of the ciphertext for the next block. \ |
| 325 | */ \ |
| 326 | \ |
| 327 | while (sz >= 2 * PRE##_BLKSZ || sz == PRE##_BLKSZ) { \ |
| 328 | uint32 b[PRE##_BLKSZ / 4], niv[PRE##_BLKSZ / 4]; \ |
| 329 | BLKC_LOAD(PRE, niv, s); \ |
| 330 | pre##_dblk(&ctx->ctx, niv, b); \ |
| 331 | BLKC_XSTORE(PRE, d, b, ctx->iv); \ |
| 332 | BLKC_MOVE(PRE, ctx->iv, niv); \ |
| 333 | s += PRE##_BLKSZ; \ |
| 334 | d += PRE##_BLKSZ; \ |
| 335 | sz -= PRE##_BLKSZ; \ |
| 336 | } \ |
| 337 | \ |
| 338 | /* --- Do the tail-end block and bit-left-over --- * \ |
| 339 | * \ |
| 340 | * This isn't very efficient. That shouldn't matter much. \ |
| 341 | */ \ |
| 342 | \ |
| 343 | if (sz) { \ |
| 344 | octet b[PRE##_BLKSZ]; \ |
| 345 | uint32 bk[PRE##_BLKSZ / 4], niv[PRE##_BLKSZ / 4]; \ |
| 346 | unsigned i; \ |
| 347 | \ |
| 348 | /* --- Let @sz@ be the size of the partial block --- */ \ |
| 349 | \ |
| 350 | sz -= PRE##_BLKSZ; \ |
| 351 | \ |
| 352 | /* --- First stage --- * \ |
| 353 | * \ |
| 354 | * Take the complete ciphertext block, and decrypt it. This block \ |
| 355 | * is carried over for the next encryption operation. \ |
| 356 | */ \ |
| 357 | \ |
| 358 | BLKC_LOAD(PRE, niv, s); \ |
| 359 | pre##_dblk(&ctx->ctx, niv, bk); \ |
| 360 | \ |
| 361 | /* --- Second stage --- * \ |
| 362 | * \ |
| 363 | * XORing the first few bytes of this with the partial ciphertext \ |
| 364 | * block recovers the partial plaintext block. At the same time, \ |
| 365 | * write the partial ciphertext block's contents in ready for stage \ |
| 366 | * three. \ |
| 367 | */ \ |
| 368 | \ |
| 369 | BLKC_STORE(PRE, b, bk); \ |
| 370 | s += PRE##_BLKSZ; \ |
| 371 | d += PRE##_BLKSZ; \ |
| 372 | for (i = 0; i < sz; i++) { \ |
| 373 | register octet x = s[i]; \ |
| 374 | d[i] = b[i] ^ x; \ |
| 375 | b[i] = x; \ |
| 376 | } \ |
| 377 | \ |
| 378 | /* --- Third stage --- * \ |
| 379 | * \ |
| 380 | * Decrypt the block we've got left, and XOR with the initial IV to \ |
| 381 | * recover the complete plaintext block. \ |
| 382 | */ \ |
| 383 | \ |
| 384 | BLKC_LOAD(PRE, bk, b); \ |
| 385 | pre##_dblk(&ctx->ctx, bk, bk); \ |
| 386 | BLKC_XSTORE(PRE, d - PRE##_BLKSZ, bk, ctx->iv); \ |
| 387 | BLKC_MOVE(PRE, ctx->iv, niv); \ |
| 388 | } \ |
| 389 | \ |
| 390 | /* --- Done --- */ \ |
| 391 | \ |
| 392 | return; \ |
| 393 | } \ |
| 394 | \ |
| 395 | /* --- Generic cipher interface --- */ \ |
| 396 | \ |
| 397 | static const gcipher_ops gops; \ |
| 398 | \ |
| 399 | typedef struct gctx { \ |
| 400 | gcipher c; \ |
| 401 | pre##_cbcctx k; \ |
| 402 | } gctx; \ |
| 403 | \ |
| 404 | static gcipher *ginit(const void *k, size_t sz) \ |
| 405 | { \ |
| 406 | gctx *g = S_CREATE(gctx); \ |
| 407 | g->c.ops = &gops; \ |
| 408 | pre##_cbcinit(&g->k, k, sz, 0); \ |
| 409 | return (&g->c); \ |
| 410 | } \ |
| 411 | \ |
| 412 | static void gencrypt(gcipher *c, const void *s, void *t, size_t sz) \ |
| 413 | { \ |
| 414 | gctx *g = (gctx *)c; \ |
| 415 | pre##_cbcencrypt(&g->k, s, t, sz); \ |
| 416 | } \ |
| 417 | \ |
| 418 | static void gdecrypt(gcipher *c, const void *s, void *t, size_t sz) \ |
| 419 | { \ |
| 420 | gctx *g = (gctx *)c; \ |
| 421 | pre##_cbcdecrypt(&g->k, s, t, sz); \ |
| 422 | } \ |
| 423 | \ |
| 424 | static void gdestroy(gcipher *c) \ |
| 425 | { \ |
| 426 | gctx *g = (gctx *)c; \ |
| 427 | BURN(*g); \ |
| 428 | S_DESTROY(g); \ |
| 429 | } \ |
| 430 | \ |
| 431 | static void gsetiv(gcipher *c, const void *iv) \ |
| 432 | { \ |
| 433 | gctx *g = (gctx *)c; \ |
| 434 | pre##_cbcsetiv(&g->k, iv); \ |
| 435 | } \ |
| 436 | \ |
| 437 | static const gcipher_ops gops = { \ |
| 438 | &pre##_cbc, \ |
| 439 | gencrypt, gdecrypt, gdestroy, gsetiv, 0 \ |
| 440 | }; \ |
| 441 | \ |
| 442 | const gccipher pre##_cbc = { \ |
| 443 | #pre "-cbc", pre##_keysz, PRE##_BLKSZ, \ |
| 444 | ginit \ |
| 445 | }; \ |
| 446 | \ |
| 447 | CBC_TEST(PRE, pre) |
| 448 | |
| 449 | /*----- Test rig ----------------------------------------------------------*/ |
| 450 | |
| 451 | #ifdef TEST_RIG |
| 452 | |
| 453 | #include <stdio.h> |
| 454 | |
| 455 | #include "daftstory.h" |
| 456 | |
| 457 | /* --- @CBC_TEST@ --- * |
| 458 | * |
| 459 | * Arguments: @PRE@, @pre@ = prefixes for block cipher definitions |
| 460 | * |
| 461 | * Use: Standard test rig for CBC functions. |
| 462 | */ |
| 463 | |
| 464 | #define CBC_TEST(PRE, pre) \ |
| 465 | \ |
| 466 | /* --- Initial plaintext for the test --- */ \ |
| 467 | \ |
| 468 | static const octet text[] = TEXT; \ |
| 469 | \ |
| 470 | /* --- Key and IV to use --- */ \ |
| 471 | \ |
| 472 | static const octet key[] = KEY; \ |
| 473 | static const octet iv[] = IV; \ |
| 474 | \ |
| 475 | /* --- Buffers for encryption and decryption output --- */ \ |
| 476 | \ |
| 477 | static octet ct[sizeof(text)]; \ |
| 478 | static octet pt[sizeof(text)]; \ |
| 479 | \ |
| 480 | static void hexdump(const octet *p, size_t sz) \ |
| 481 | { \ |
| 482 | const octet *q = p + sz; \ |
| 483 | for (sz = 0; p < q; p++, sz++) { \ |
| 484 | printf("%02x", *p); \ |
| 485 | if ((sz + 1) % PRE##_BLKSZ == 0) \ |
| 486 | putchar(':'); \ |
| 487 | } \ |
| 488 | } \ |
| 489 | \ |
| 490 | int main(void) \ |
| 491 | { \ |
| 492 | size_t sz = 0, rest; \ |
| 493 | pre##_cbcctx ctx; \ |
| 494 | pre##_ctx k; \ |
| 495 | int status = 0; \ |
| 496 | int done = 0; \ |
| 497 | \ |
| 498 | size_t keysz = PRE##_KEYSZ ? \ |
| 499 | PRE##_KEYSZ : strlen((const char *)key); \ |
| 500 | \ |
| 501 | fputs(#pre "-cbc: ", stdout); \ |
| 502 | \ |
| 503 | pre##_init(&k, key, keysz); \ |
| 504 | pre##_cbcsetkey(&ctx, &k); \ |
| 505 | \ |
| 506 | while (sz <= sizeof(text)) { \ |
| 507 | rest = sizeof(text) - sz; \ |
| 508 | memcpy(ct, text, sizeof(text)); \ |
| 509 | pre##_cbcsetiv(&ctx, iv); \ |
| 510 | pre##_cbcencrypt(&ctx, ct, ct, sz); \ |
| 511 | pre##_cbcencrypt(&ctx, ct + sz, ct + sz, rest); \ |
| 512 | memcpy(pt, ct, sizeof(text)); \ |
| 513 | pre##_cbcsetiv(&ctx, iv); \ |
| 514 | pre##_cbcdecrypt(&ctx, pt, pt, sz); \ |
| 515 | pre##_cbcdecrypt(&ctx, pt + sz, pt + sz, rest); \ |
| 516 | if (memcmp(pt, text, sizeof(text)) == 0) { \ |
| 517 | done++; \ |
| 518 | if (sizeof(text) < 40 || done % 8 == 0) \ |
| 519 | fputc('.', stdout); \ |
| 520 | if (done % 480 == 0) \ |
| 521 | fputs("\n\t", stdout); \ |
| 522 | fflush(stdout); \ |
| 523 | } else { \ |
| 524 | printf("\nError (sz = %lu)\n", (unsigned long)sz); \ |
| 525 | status = 1; \ |
| 526 | printf("\tplaintext = "); hexdump(text, sz); \ |
| 527 | printf(", "); hexdump(text + sz, rest); \ |
| 528 | fputc('\n', stdout); \ |
| 529 | printf("\tciphertext = "); hexdump(ct, sz); \ |
| 530 | printf(", "); hexdump(ct + sz, rest); \ |
| 531 | fputc('\n', stdout); \ |
| 532 | printf("\trecovered text = "); hexdump(pt, sz); \ |
| 533 | printf(", "); hexdump(pt + sz, rest); \ |
| 534 | fputc('\n', stdout); \ |
| 535 | fputc('\n', stdout); \ |
| 536 | } \ |
| 537 | if (sz < 63) \ |
| 538 | sz++; \ |
| 539 | else \ |
| 540 | sz += 9; \ |
| 541 | } \ |
| 542 | \ |
| 543 | fputs(status ? " failed\n" : " ok\n", stdout); \ |
| 544 | return (status); \ |
| 545 | } |
| 546 | |
| 547 | #else |
| 548 | # define CBC_TEST(PRE, pre) |
| 549 | #endif |
| 550 | |
| 551 | /*----- That's all, folks -------------------------------------------------*/ |
| 552 | |
| 553 | #ifdef __cplusplus |
| 554 | } |
| 555 | #endif |
| 556 | |
| 557 | #endif |