xform_sha2.c revision 104476
1132718Skan/* $FreeBSD: head/sys/opencrypto/xform.c 104476 2002-10-04 20:31:23Z sam $ */ 2132718Skan/* $OpenBSD: xform.c,v 1.16 2001/08/28 12:20:43 ben Exp $ */ 3169689Skan/* 4169689Skan * The authors of this code are John Ioannidis (ji@tla.org), 5169689Skan * Angelos D. Keromytis (kermit@csd.uch.gr) and 6169689Skan * Niels Provos (provos@physnet.uni-hamburg.de). 7169689Skan * 8132718Skan * This code was written by John Ioannidis for BSD/OS in Athens, Greece, 9169689Skan * in November 1995. 10169689Skan * 11169689Skan * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996, 12 * by Angelos D. Keromytis. 13 * 14 * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis 15 * and Niels Provos. 16 * 17 * Additional features in 1999 by Angelos D. Keromytis. 18 * 19 * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis, 20 * Angelos D. Keromytis and Niels Provos. 21 * 22 * Copyright (C) 2001, Angelos D. Keromytis. 23 * 24 * Permission to use, copy, and modify this software with or without fee 25 * is hereby granted, provided that this entire notice is included in 26 * all copies of any software which is or includes a copy or 27 * modification of this software. 28 * You may use this code under the GNU public license if you so wish. Please 29 * contribute changes back to the authors under this freer than GPL license 30 * so that we may further the use of strong encryption without limitations to 31 * all. 32 * 33 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 34 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 35 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 36 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 37 * PURPOSE. 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/malloc.h> 43#include <sys/sysctl.h> 44#include <sys/errno.h> 45#include <sys/time.h> 46#include <sys/kernel.h> 47#include <machine/cpu.h> 48 49#include <crypto/blowfish/blowfish.h> 50#include <crypto/des/des.h> 51#include <crypto/sha1.h> 52 53#include <opencrypto/cast.h> 54#include <opencrypto/deflate.h> 55#include <opencrypto/rijndael.h> 56#include <opencrypto/rmd160.h> 57#include <opencrypto/skipjack.h> 58 59#include <sys/md5.h> 60 61#include <opencrypto/cryptodev.h> 62#include <opencrypto/xform.h> 63 64static void null_encrypt(caddr_t, u_int8_t *); 65static void null_decrypt(caddr_t, u_int8_t *); 66static int null_setkey(u_int8_t **, u_int8_t *, int); 67static void null_zerokey(u_int8_t **); 68 69static int des1_setkey(u_int8_t **, u_int8_t *, int); 70static int des3_setkey(u_int8_t **, u_int8_t *, int); 71static int blf_setkey(u_int8_t **, u_int8_t *, int); 72static int cast5_setkey(u_int8_t **, u_int8_t *, int); 73static int skipjack_setkey(u_int8_t **, u_int8_t *, int); 74static int rijndael128_setkey(u_int8_t **, u_int8_t *, int); 75static void des1_encrypt(caddr_t, u_int8_t *); 76static void des3_encrypt(caddr_t, u_int8_t *); 77static void blf_encrypt(caddr_t, u_int8_t *); 78static void cast5_encrypt(caddr_t, u_int8_t *); 79static void skipjack_encrypt(caddr_t, u_int8_t *); 80static void rijndael128_encrypt(caddr_t, u_int8_t *); 81static void des1_decrypt(caddr_t, u_int8_t *); 82static void des3_decrypt(caddr_t, u_int8_t *); 83static void blf_decrypt(caddr_t, u_int8_t *); 84static void cast5_decrypt(caddr_t, u_int8_t *); 85static void skipjack_decrypt(caddr_t, u_int8_t *); 86static void rijndael128_decrypt(caddr_t, u_int8_t *); 87static void des1_zerokey(u_int8_t **); 88static void des3_zerokey(u_int8_t **); 89static void blf_zerokey(u_int8_t **); 90static void cast5_zerokey(u_int8_t **); 91static void skipjack_zerokey(u_int8_t **); 92static void rijndael128_zerokey(u_int8_t **); 93 94static void null_init(void *); 95static int null_update(void *, u_int8_t *, u_int16_t); 96static void null_final(u_int8_t *, void *); 97static int MD5Update_int(void *, u_int8_t *, u_int16_t); 98static void SHA1Init_int(void *); 99static int SHA1Update_int(void *, u_int8_t *, u_int16_t); 100static void SHA1Final_int(u_int8_t *, void *); 101static int RMD160Update_int(void *, u_int8_t *, u_int16_t); 102static int SHA256Update_int(void *, u_int8_t *, u_int16_t); 103static int SHA384Update_int(void *, u_int8_t *, u_int16_t); 104static int SHA512Update_int(void *, u_int8_t *, u_int16_t); 105 106static u_int32_t deflate_compress(u_int8_t *, u_int32_t, u_int8_t **); 107static u_int32_t deflate_decompress(u_int8_t *, u_int32_t, u_int8_t **); 108 109MALLOC_DEFINE(M_XDATA, "xform", "xform data buffers"); 110 111/* Encryption instances */ 112struct enc_xform enc_xform_null = { 113 CRYPTO_NULL_CBC, "NULL", 114 /* NB: blocksize of 4 is to generate a properly aligned ESP header */ 115 4, 0, 256, /* 2048 bits, max key */ 116 null_encrypt, 117 null_decrypt, 118 null_setkey, 119 null_zerokey, 120}; 121 122struct enc_xform enc_xform_des = { 123 CRYPTO_DES_CBC, "DES", 124 8, 8, 8, 125 des1_encrypt, 126 des1_decrypt, 127 des1_setkey, 128 des1_zerokey, 129}; 130 131struct enc_xform enc_xform_3des = { 132 CRYPTO_3DES_CBC, "3DES", 133 8, 24, 24, 134 des3_encrypt, 135 des3_decrypt, 136 des3_setkey, 137 des3_zerokey 138}; 139 140struct enc_xform enc_xform_blf = { 141 CRYPTO_BLF_CBC, "Blowfish", 142 8, 5, 56 /* 448 bits, max key */, 143 blf_encrypt, 144 blf_decrypt, 145 blf_setkey, 146 blf_zerokey 147}; 148 149struct enc_xform enc_xform_cast5 = { 150 CRYPTO_CAST_CBC, "CAST-128", 151 8, 5, 16, 152 cast5_encrypt, 153 cast5_decrypt, 154 cast5_setkey, 155 cast5_zerokey 156}; 157 158struct enc_xform enc_xform_skipjack = { 159 CRYPTO_SKIPJACK_CBC, "Skipjack", 160 8, 10, 10, 161 skipjack_encrypt, 162 skipjack_decrypt, 163 skipjack_setkey, 164 skipjack_zerokey 165}; 166 167struct enc_xform enc_xform_rijndael128 = { 168 CRYPTO_RIJNDAEL128_CBC, "Rijndael-128/AES", 169 16, 8, 32, 170 rijndael128_encrypt, 171 rijndael128_decrypt, 172 rijndael128_setkey, 173 rijndael128_zerokey, 174}; 175 176struct enc_xform enc_xform_arc4 = { 177 CRYPTO_ARC4, "ARC4", 178 1, 1, 32, 179 NULL, 180 NULL, 181 NULL, 182 NULL, 183}; 184 185/* Authentication instances */ 186struct auth_hash auth_hash_null = { 187 CRYPTO_NULL_HMAC, "NULL-HMAC", 188 0, 0, 12, sizeof(int), /* NB: context isn't used */ 189 null_init, null_update, null_final 190}; 191 192struct auth_hash auth_hash_hmac_md5_96 = { 193 CRYPTO_MD5_HMAC, "HMAC-MD5", 194 16, 16, 12, sizeof(MD5_CTX), 195 (void (*) (void *)) MD5Init, MD5Update_int, 196 (void (*) (u_int8_t *, void *)) MD5Final 197}; 198 199struct auth_hash auth_hash_hmac_sha1_96 = { 200 CRYPTO_SHA1_HMAC, "HMAC-SHA1", 201 20, 20, 12, sizeof(SHA1_CTX), 202 SHA1Init_int, SHA1Update_int, SHA1Final_int 203}; 204 205struct auth_hash auth_hash_hmac_ripemd_160_96 = { 206 CRYPTO_RIPEMD160_HMAC, "HMAC-RIPEMD-160", 207 20, 20, 12, sizeof(RMD160_CTX), 208 (void (*)(void *)) RMD160Init, RMD160Update_int, 209 (void (*)(u_int8_t *, void *)) RMD160Final 210}; 211 212struct auth_hash auth_hash_key_md5 = { 213 CRYPTO_MD5_KPDK, "Keyed MD5", 214 0, 16, 12, sizeof(MD5_CTX), 215 (void (*)(void *)) MD5Init, MD5Update_int, 216 (void (*)(u_int8_t *, void *)) MD5Final 217}; 218 219struct auth_hash auth_hash_key_sha1 = { 220 CRYPTO_SHA1_KPDK, "Keyed SHA1", 221 0, 20, 12, sizeof(SHA1_CTX), 222 SHA1Init_int, SHA1Update_int, SHA1Final_int 223}; 224 225struct auth_hash auth_hash_hmac_sha2_256 = { 226 CRYPTO_SHA2_HMAC, "HMAC-SHA2", 227 32, 32, 12, sizeof(SHA256_CTX), 228 (void (*)(void *)) SHA256_Init, SHA256Update_int, 229 (void (*)(u_int8_t *, void *)) SHA256_Final 230}; 231 232struct auth_hash auth_hash_hmac_sha2_384 = { 233 CRYPTO_SHA2_HMAC, "HMAC-SHA2-384", 234 48, 48, 12, sizeof(SHA384_CTX), 235 (void (*)(void *)) SHA384_Init, SHA384Update_int, 236 (void (*)(u_int8_t *, void *)) SHA384_Final 237}; 238 239struct auth_hash auth_hash_hmac_sha2_512 = { 240 CRYPTO_SHA2_HMAC, "HMAC-SHA2-512", 241 64, 64, 12, sizeof(SHA512_CTX), 242 (void (*)(void *)) SHA512_Init, SHA512Update_int, 243 (void (*)(u_int8_t *, void *)) SHA512_Final 244}; 245 246/* Compression instance */ 247struct comp_algo comp_algo_deflate = { 248 CRYPTO_DEFLATE_COMP, "Deflate", 249 90, deflate_compress, 250 deflate_decompress 251}; 252 253/* 254 * Encryption wrapper routines. 255 */ 256static void 257null_encrypt(caddr_t key, u_int8_t *blk) 258{ 259} 260static void 261null_decrypt(caddr_t key, u_int8_t *blk) 262{ 263} 264static int 265null_setkey(u_int8_t **sched, u_int8_t *key, int len) 266{ 267 *sched = NULL; 268 return 0; 269} 270static void 271null_zerokey(u_int8_t **sched) 272{ 273 *sched = NULL; 274} 275 276static void 277des1_encrypt(caddr_t key, u_int8_t *blk) 278{ 279 des_cblock *cb = (des_cblock *) blk; 280 des_key_schedule *p = (des_key_schedule *) key; 281 282 des_ecb_encrypt(cb, cb, p[0], DES_ENCRYPT); 283} 284 285static void 286des1_decrypt(caddr_t key, u_int8_t *blk) 287{ 288 des_cblock *cb = (des_cblock *) blk; 289 des_key_schedule *p = (des_key_schedule *) key; 290 291 des_ecb_encrypt(cb, cb, p[0], DES_DECRYPT); 292} 293 294static int 295des1_setkey(u_int8_t **sched, u_int8_t *key, int len) 296{ 297 des_key_schedule *p; 298 int err; 299 300 MALLOC(p, des_key_schedule *, sizeof (des_key_schedule), 301 M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 302 if (p != NULL) { 303 des_set_key((des_cblock *) key, p[0]); 304 err = 0; 305 } else 306 err = ENOMEM; 307 *sched = (u_int8_t *) p; 308 return err; 309} 310 311static void 312des1_zerokey(u_int8_t **sched) 313{ 314 bzero(*sched, sizeof (des_key_schedule)); 315 FREE(*sched, M_CRYPTO_DATA); 316 *sched = NULL; 317} 318 319static void 320des3_encrypt(caddr_t key, u_int8_t *blk) 321{ 322 des_cblock *cb = (des_cblock *) blk; 323 des_key_schedule *p = (des_key_schedule *) key; 324 325 des_ecb3_encrypt(cb, cb, p[0], p[1], p[2], DES_ENCRYPT); 326} 327 328static void 329des3_decrypt(caddr_t key, u_int8_t *blk) 330{ 331 des_cblock *cb = (des_cblock *) blk; 332 des_key_schedule *p = (des_key_schedule *) key; 333 334 des_ecb3_encrypt(cb, cb, p[0], p[1], p[2], DES_DECRYPT); 335} 336 337static int 338des3_setkey(u_int8_t **sched, u_int8_t *key, int len) 339{ 340 des_key_schedule *p; 341 int err; 342 343 MALLOC(p, des_key_schedule *, 3*sizeof (des_key_schedule), 344 M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 345 if (p != NULL) { 346 des_set_key((des_cblock *)(key + 0), p[0]); 347 des_set_key((des_cblock *)(key + 8), p[1]); 348 des_set_key((des_cblock *)(key + 16), p[2]); 349 err = 0; 350 } else 351 err = ENOMEM; 352 *sched = (u_int8_t *) p; 353 return err; 354} 355 356static void 357des3_zerokey(u_int8_t **sched) 358{ 359 bzero(*sched, 3*sizeof (des_key_schedule)); 360 FREE(*sched, M_CRYPTO_DATA); 361 *sched = NULL; 362} 363 364static void 365blf_encrypt(caddr_t key, u_int8_t *blk) 366{ 367 BF_LONG t[2]; 368 369 memcpy(t, blk, sizeof (t)); 370 t[0] = ntohl(t[0]); 371 t[1] = ntohl(t[1]); 372 /* NB: BF_encrypt expects the block in host order! */ 373 BF_encrypt(t, (BF_KEY *) key); 374 t[0] = htonl(t[0]); 375 t[1] = htonl(t[1]); 376 memcpy(blk, t, sizeof (t)); 377} 378 379static void 380blf_decrypt(caddr_t key, u_int8_t *blk) 381{ 382 BF_LONG t[2]; 383 384 memcpy(t, blk, sizeof (t)); 385 t[0] = ntohl(t[0]); 386 t[1] = ntohl(t[1]); 387 /* NB: BF_decrypt expects the block in host order! */ 388 BF_decrypt(t, (BF_KEY *) key); 389 t[0] = htonl(t[0]); 390 t[1] = htonl(t[1]); 391 memcpy(blk, t, sizeof (t)); 392} 393 394static int 395blf_setkey(u_int8_t **sched, u_int8_t *key, int len) 396{ 397 int err; 398 399 MALLOC(*sched, u_int8_t *, sizeof(BF_KEY), 400 M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 401 if (*sched != NULL) { 402 BF_set_key((BF_KEY *) *sched, len, key); 403 err = 0; 404 } else 405 err = ENOMEM; 406 return err; 407} 408 409static void 410blf_zerokey(u_int8_t **sched) 411{ 412 bzero(*sched, sizeof(BF_KEY)); 413 FREE(*sched, M_CRYPTO_DATA); 414 *sched = NULL; 415} 416 417static void 418cast5_encrypt(caddr_t key, u_int8_t *blk) 419{ 420 cast_encrypt((cast_key *) key, blk, blk); 421} 422 423static void 424cast5_decrypt(caddr_t key, u_int8_t *blk) 425{ 426 cast_decrypt((cast_key *) key, blk, blk); 427} 428 429static int 430cast5_setkey(u_int8_t **sched, u_int8_t *key, int len) 431{ 432 int err; 433 434 MALLOC(*sched, u_int8_t *, sizeof(cast_key), M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 435 if (*sched != NULL) { 436 cast_setkey((cast_key *)*sched, key, len); 437 err = 0; 438 } else 439 err = ENOMEM; 440 return err; 441} 442 443static void 444cast5_zerokey(u_int8_t **sched) 445{ 446 bzero(*sched, sizeof(cast_key)); 447 FREE(*sched, M_CRYPTO_DATA); 448 *sched = NULL; 449} 450 451static void 452skipjack_encrypt(caddr_t key, u_int8_t *blk) 453{ 454 skipjack_forwards(blk, blk, (u_int8_t **) key); 455} 456 457static void 458skipjack_decrypt(caddr_t key, u_int8_t *blk) 459{ 460 skipjack_backwards(blk, blk, (u_int8_t **) key); 461} 462 463static int 464skipjack_setkey(u_int8_t **sched, u_int8_t *key, int len) 465{ 466 int err; 467 468 /* NB: allocate all the memory that's needed at once */ 469 MALLOC(*sched, u_int8_t *, 10 * (sizeof(u_int8_t *) + 0x100), 470 M_CRYPTO_DATA, M_NOWAIT|M_ZERO); 471 if (*sched != NULL) { 472 u_int8_t** key_tables = (u_int8_t**) *sched; 473 u_int8_t* table = (u_int8_t*) &key_tables[10]; 474 int k; 475 476 for (k = 0; k < 10; k++) { 477 key_tables[k] = table; 478 table += 0x100; 479 } 480 subkey_table_gen(key, (u_int8_t **) *sched); 481 err = 0; 482 } else 483 err = ENOMEM; 484 return err; 485} 486 487static void 488skipjack_zerokey(u_int8_t **sched) 489{ 490 bzero(*sched, 10 * (sizeof(u_int8_t *) + 0x100)); 491 FREE(*sched, M_CRYPTO_DATA); 492 *sched = NULL; 493} 494 495static void 496rijndael128_encrypt(caddr_t key, u_int8_t *blk) 497{ 498 rijndael_encrypt((rijndael_ctx *) key, (u_char *) blk, (u_char *) blk); 499} 500 501static void 502rijndael128_decrypt(caddr_t key, u_int8_t *blk) 503{ 504 rijndael_decrypt(((rijndael_ctx *) key) + 1, (u_char *) blk, 505 (u_char *) blk); 506} 507 508static int 509rijndael128_setkey(u_int8_t **sched, u_int8_t *key, int len) 510{ 511 int err; 512 513 MALLOC(*sched, u_int8_t *, 2 * sizeof(rijndael_ctx), M_CRYPTO_DATA, 514 M_NOWAIT|M_ZERO); 515 if (*sched != NULL) { 516 rijndael_set_key((rijndael_ctx *) *sched, (u_char *) key, len * 8, 1); 517 rijndael_set_key(((rijndael_ctx *) *sched) + 1, (u_char *) key, 518 len * 8, 0); 519 err = 0; 520 } else 521 err = ENOMEM; 522 return err; 523} 524 525static void 526rijndael128_zerokey(u_int8_t **sched) 527{ 528 bzero(*sched, 2 * sizeof(rijndael_ctx)); 529 FREE(*sched, M_CRYPTO_DATA); 530 *sched = NULL; 531} 532 533/* 534 * And now for auth. 535 */ 536 537static void 538null_init(void *ctx) 539{ 540} 541 542static int 543null_update(void *ctx, u_int8_t *buf, u_int16_t len) 544{ 545 return 0; 546} 547 548static void 549null_final(u_int8_t *buf, void *ctx) 550{ 551 if (buf != (u_int8_t *) 0) 552 bzero(buf, 12); 553} 554 555static int 556RMD160Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 557{ 558 RMD160Update(ctx, buf, len); 559 return 0; 560} 561 562static int 563MD5Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 564{ 565 MD5Update(ctx, buf, len); 566 return 0; 567} 568 569static void 570SHA1Init_int(void *ctx) 571{ 572 SHA1Init(ctx); 573} 574 575static int 576SHA1Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 577{ 578 SHA1Update(ctx, buf, len); 579 return 0; 580} 581 582static void 583SHA1Final_int(u_int8_t *blk, void *ctx) 584{ 585 SHA1Final(blk, ctx); 586} 587 588static int 589SHA256Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 590{ 591 SHA256_Update(ctx, buf, len); 592 return 0; 593} 594 595static int 596SHA384Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 597{ 598 SHA384_Update(ctx, buf, len); 599 return 0; 600} 601 602static int 603SHA512Update_int(void *ctx, u_int8_t *buf, u_int16_t len) 604{ 605 SHA512_Update(ctx, buf, len); 606 return 0; 607} 608 609/* 610 * And compression 611 */ 612 613static u_int32_t 614deflate_compress(data, size, out) 615 u_int8_t *data; 616 u_int32_t size; 617 u_int8_t **out; 618{ 619 return deflate_global(data, size, 0, out); 620} 621 622static u_int32_t 623deflate_decompress(data, size, out) 624 u_int8_t *data; 625 u_int32_t size; 626 u_int8_t **out; 627{ 628 return deflate_global(data, size, 1, out); 629} 630