1 /* 2 * Common Public License Version 0.5 3 * 4 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF 5 * THIS COMMON PUBLIC LICENSE ("AGREEMENT"). ANY USE, 6 * REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES 7 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT. 8 * 9 * 1. DEFINITIONS 10 * 11 * "Contribution" means: 12 * a) in the case of the initial Contributor, the 13 * initial code and documentation distributed under 14 * this Agreement, and 15 * 16 * b) in the case of each subsequent Contributor: 17 * i) changes to the Program, and 18 * ii) additions to the Program; 19 * 20 * where such changes and/or additions to the Program 21 * originate from and are distributed by that 22 * particular Contributor. A Contribution 'originates' 23 * from a Contributor if it was added to the Program 24 * by such Contributor itself or anyone acting on such 25 * Contributor's behalf. Contributions do not include 26 * additions to the Program which: (i) are separate 27 * modules of software distributed in conjunction with 28 * the Program under their own license agreement, and 29 * (ii) are not derivative works of the Program. 30 * 31 * 32 * "Contributor" means any person or entity that distributes 33 * the Program. 34 * 35 * "Licensed Patents " mean patent claims licensable by a 36 * Contributor which are necessarily infringed by the use or 37 * sale of its Contribution alone or when combined with the 38 * Program. 39 * 40 * "Program" means the Contributions distributed in 41 * accordance with this Agreement. 42 * 43 * "Recipient" means anyone who receives the Program under 44 * this Agreement, including all Contributors. 45 * 46 * 2. 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DISCLAIMER OF LIABILITY 205 * EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER 206 * RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY 207 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 208 * OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION 209 * LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF 210 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 211 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 212 * OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE 213 * OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE 214 * POSSIBILITY OF SUCH DAMAGES. 215 * 216 * 7. GENERAL 217 * 218 * If any provision of this Agreement is invalid or 219 * unenforceable under applicable law, it shall not affect 220 * the validity or enforceability of the remainder of the 221 * terms of this Agreement, and without further action by the 222 * parties hereto, such provision shall be reformed to the 223 * minimum extent necessary to make such provision valid and 224 * enforceable. 225 * 226 * 227 * If Recipient institutes patent litigation against a 228 * Contributor with respect to a patent applicable to 229 * software (including a cross-claim or counterclaim in a 230 * lawsuit), then any patent licenses granted by that 231 * Contributor to such Recipient under this Agreement shall 232 * terminate as of the date such litigation is filed. In 233 * addition, If Recipient institutes patent litigation 234 * against any entity (including a cross-claim or 235 * counterclaim in a lawsuit) alleging that the Program 236 * itself (excluding combinations of the Program with other 237 * software or hardware) infringes such Recipient's 238 * patent(s), then such Recipient's rights granted under 239 * Section 2(b) shall terminate as of the date such 240 * litigation is filed. 241 * 242 * All Recipient's rights under this Agreement shall 243 * terminate if it fails to comply with any of the material 244 * terms or conditions of this Agreement and does not cure 245 * such failure in a reasonable period of time after becoming 246 * aware of such noncompliance. If all Recipient's rights 247 * under this Agreement terminate, Recipient agrees to cease 248 * use and distribution of the Program as soon as reasonably 249 * practicable. However, Recipient's obligations under this 250 * Agreement and any licenses granted by Recipient relating 251 * to the Program shall continue and survive. 252 * 253 * Everyone is permitted to copy and distribute copies of 254 * this Agreement, but in order to avoid inconsistency the 255 * Agreement is copyrighted and may only be modified in the 256 * following manner. The Agreement Steward reserves the right 257 * to publish new versions (including revisions) of this 258 * Agreement from time to time. No one other than the 259 * Agreement Steward has the right to modify this Agreement. 260 * 261 * IBM is the initial Agreement Steward. IBM may assign the 262 * responsibility to serve as the Agreement Steward to a 263 * suitable separate entity. Each new version of the 264 * Agreement will be given a distinguishing version number. 265 * The Program (including Contributions) may always be 266 * distributed subject to the version of the Agreement under 267 * which it was received. In addition, after a new version of 268 * the Agreement is published, Contributor may elect to 269 * distribute the Program (including its Contributions) under 270 * the new version. Except as expressly stated in Sections 271 * 2(a) and 2(b) above, Recipient receives no rights or 272 * licenses to the intellectual property of any Contributor 273 * under this Agreement, whether expressly, by implication, 274 * estoppel or otherwise. All rights in the Program not 275 * expressly granted under this Agreement are reserved. 276 * 277 * 278 * This Agreement is governed by the laws of the State of New 279 * York and the intellectual property laws of the United 280 * States of America. No party to this Agreement will bring a 281 * legal action under this Agreement more than one year after 282 * the cause of action arose. Each party waives its rights to 283 * a jury trial in any resulting litigation. 284 * 285 * 286 * 287 * (C) COPYRIGHT International Business Machines Corp. 2001,2002 288 */ 289 /* 290 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 291 * Use is subject to license terms. 292 */ 293 294 #include "tpmtok_int.h" 295 296 CK_RV 297 md5_hash(SESSION *sess, 298 CK_BBOOL length_only, 299 DIGEST_CONTEXT *ctx, 300 CK_BYTE *in_data, 301 CK_ULONG in_data_len, 302 CK_BYTE *out_data, 303 CK_ULONG *out_data_len) 304 { 305 if (! sess || ! ctx || ! out_data_len) { 306 return (CKR_FUNCTION_FAILED); 307 } 308 309 *out_data_len = MD5_DIGEST_LENGTH; 310 if (length_only == TRUE) { 311 return (CKR_OK); 312 } 313 314 MD5Update(ctx->context.md5ctx, in_data, in_data_len); 315 MD5Final(out_data, ctx->context.md5ctx); 316 317 return (CKR_OK); 318 } 319 320 CK_RV 321 md5_hmac_sign(SESSION * sess, 322 CK_BBOOL length_only, 323 SIGN_VERIFY_CONTEXT * ctx, 324 CK_BYTE * in_data, 325 CK_ULONG in_data_len, 326 CK_BYTE * out_data, 327 CK_ULONG * out_data_len) 328 { 329 OBJECT * key_obj = NULL; 330 CK_ATTRIBUTE * attr = NULL; 331 CK_BYTE hash[MD5_DIGEST_LENGTH]; 332 DIGEST_CONTEXT digest_ctx; 333 CK_MECHANISM digest_mech; 334 CK_BYTE k_ipad[MD5_BLOCK_SIZE]; 335 CK_BYTE k_opad[MD5_BLOCK_SIZE]; 336 CK_ULONG key_bytes, hash_len, hmac_len; 337 CK_ULONG i; 338 CK_RV rc; 339 340 if (! sess || ! ctx || ! out_data_len) { 341 return (CKR_FUNCTION_FAILED); 342 } 343 344 if (ctx->mech.mechanism == CKM_MD5_HMAC_GENERAL) { 345 hmac_len = *(CK_ULONG *)ctx->mech.pParameter; 346 347 if (hmac_len == 0) { 348 *out_data_len = 0; 349 return (CKR_OK); 350 } 351 } 352 else 353 hmac_len = MD5_DIGEST_LENGTH; 354 355 356 *out_data_len = hmac_len; 357 if (length_only == TRUE) { 358 return (CKR_OK); 359 } 360 361 (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); 362 363 rc = object_mgr_find_in_map1(sess->hContext, ctx->key, &key_obj); 364 if (rc != CKR_OK) 365 return (rc); 366 rc = template_attribute_find(key_obj->template, CKA_VALUE, &attr); 367 if (rc == FALSE) { 368 return (CKR_FUNCTION_FAILED); 369 } 370 else 371 key_bytes = attr->ulValueLen; 372 373 // build (K XOR ipad), (K XOR opad) 374 // 375 if (key_bytes > MD5_BLOCK_SIZE) { 376 digest_mech.mechanism = CKM_MD5; 377 digest_mech.ulParameterLen = 0; 378 digest_mech.pParameter = NULL; 379 380 rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); 381 if (rc != CKR_OK) { 382 (void) digest_mgr_cleanup(&digest_ctx); 383 return (rc); 384 } 385 386 hash_len = *out_data_len; 387 rc = digest_mgr_digest(sess, FALSE, &digest_ctx, 388 attr->pValue, attr->ulValueLen, 389 hash, &hash_len); 390 if (rc != CKR_OK) { 391 (void) digest_mgr_cleanup(&digest_ctx); 392 return (rc); 393 } 394 395 (void) digest_mgr_cleanup(&digest_ctx); 396 (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); 397 398 for (i = 0; i < hash_len; i++) { 399 k_ipad[i] = hash[i] ^ 0x36; 400 k_opad[i] = hash[i] ^ 0x5C; 401 } 402 403 (void) memset(&k_ipad[i], 0x36, MD5_BLOCK_SIZE - i); 404 (void) memset(&k_opad[i], 0x5C, MD5_BLOCK_SIZE - i); 405 } else { 406 CK_BYTE *key = attr->pValue; 407 408 for (i = 0; i < key_bytes; i++) { 409 k_ipad[i] = key[i] ^ 0x36; 410 k_opad[i] = key[i] ^ 0x5C; 411 } 412 413 (void) memset(&k_ipad[i], 0x36, MD5_BLOCK_SIZE - key_bytes); 414 (void) memset(&k_opad[i], 0x5C, MD5_BLOCK_SIZE - key_bytes); 415 } 416 417 digest_mech.mechanism = CKM_MD5; 418 digest_mech.ulParameterLen = 0; 419 digest_mech.pParameter = NULL; 420 421 rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); 422 if (rc != CKR_OK) { 423 (void) digest_mgr_cleanup(&digest_ctx); 424 return (rc); 425 } 426 427 rc = digest_mgr_digest_update(sess, &digest_ctx, 428 k_ipad, MD5_BLOCK_SIZE); 429 if (rc != CKR_OK) { 430 (void) digest_mgr_cleanup(&digest_ctx); 431 return (rc); 432 } 433 434 rc = digest_mgr_digest_update(sess, &digest_ctx, 435 in_data, in_data_len); 436 if (rc != CKR_OK) { 437 (void) digest_mgr_cleanup(&digest_ctx); 438 return (rc); 439 } 440 441 hash_len = sizeof (hash); 442 rc = digest_mgr_digest_final(sess, &digest_ctx, hash, &hash_len); 443 if (rc != CKR_OK) { 444 (void) digest_mgr_cleanup(&digest_ctx); 445 return (rc); 446 } 447 448 (void) digest_mgr_cleanup(&digest_ctx); 449 (void) memset(&digest_ctx, 0x0, sizeof (DIGEST_CONTEXT)); 450 451 rc = digest_mgr_init(sess, &digest_ctx, &digest_mech); 452 if (rc != CKR_OK) { 453 (void) digest_mgr_cleanup(&digest_ctx); 454 return (rc); 455 } 456 457 rc = digest_mgr_digest_update(sess, &digest_ctx, 458 k_opad, MD5_BLOCK_SIZE); 459 if (rc != CKR_OK) { 460 (void) digest_mgr_cleanup(&digest_ctx); 461 return (rc); 462 } 463 464 rc = digest_mgr_digest_update(sess, &digest_ctx, hash, hash_len); 465 if (rc != CKR_OK) { 466 (void) digest_mgr_cleanup(&digest_ctx); 467 return (rc); 468 } 469 470 hash_len = sizeof (hash); 471 rc = digest_mgr_digest_final(sess, &digest_ctx, hash, &hash_len); 472 if (rc != CKR_OK) { 473 (void) digest_mgr_cleanup(&digest_ctx); 474 return (rc); 475 } 476 477 (void) memcpy(out_data, hash, hmac_len); 478 *out_data_len = hmac_len; 479 480 (void) digest_mgr_cleanup(&digest_ctx); 481 return (CKR_OK); 482 } 483 484 CK_RV 485 md5_hmac_verify(SESSION * sess, 486 SIGN_VERIFY_CONTEXT * ctx, 487 CK_BYTE * in_data, 488 CK_ULONG in_data_len, 489 CK_BYTE * signature, 490 CK_ULONG sig_len) 491 { 492 CK_BYTE hmac[MD5_DIGEST_LENGTH]; 493 SIGN_VERIFY_CONTEXT hmac_ctx; 494 CK_ULONG hmac_len, len; 495 CK_RV rc; 496 497 if (! sess || ! ctx || ! in_data || ! signature) { 498 return (CKR_FUNCTION_FAILED); 499 } 500 if (ctx->mech.mechanism == CKM_MD5_HMAC_GENERAL) 501 hmac_len = *(CK_ULONG *)ctx->mech.pParameter; 502 else 503 hmac_len = MD5_DIGEST_LENGTH; 504 505 (void) memset(&hmac_ctx, 0, sizeof (SIGN_VERIFY_CONTEXT)); 506 507 rc = sign_mgr_init(sess, &hmac_ctx, &ctx->mech, FALSE, ctx->key); 508 if (rc != CKR_OK) { 509 (void) sign_mgr_cleanup(&hmac_ctx); 510 return (rc); 511 } 512 513 len = sizeof (hmac); 514 rc = sign_mgr_sign(sess, FALSE, &hmac_ctx, 515 in_data, in_data_len, hmac, &len); 516 if (rc != CKR_OK) { 517 (void) sign_mgr_cleanup(&hmac_ctx); 518 return (rc); 519 } 520 521 if ((len != hmac_len) || (len != sig_len)) { 522 return (CKR_SIGNATURE_LEN_RANGE); 523 } 524 if (memcmp(hmac, signature, hmac_len) != 0) { 525 rc = CKR_SIGNATURE_INVALID; 526 } 527 (void) sign_mgr_cleanup(&hmac_ctx); 528 return (rc); 529 } 530