1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* Portions Copyright 2005 Richard Lowe */ 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * decrypt.c 29 * 30 * Implements encrypt(1) and decrypt(1) commands 31 * 32 * One binary performs both encrypt/decrypt operation. 33 * 34 * Usage: 35 * -a algorithm mechanism name without CKM_ prefix. Case 36 * does not matter 37 * -k keyfile file containing key data. If not specified user is 38 * prompted to enter key. key length > 0 is required 39 * -i infile input file to encrypt/decrypt. If omitted, stdin used. 40 * -o outfile output file to encrypt/decrypt. If omitted, stdout used. 41 * if infile & outfile are same, a temp file is used for 42 * output and infile is replaced with this file after 43 * operation is complete 44 * -l Display the list of algorithms 45 * -v Display verbose information 46 * -T tokenspec Specify a PKCS#11 token (optionally used with -K) 47 * -K keylabel Specify the symmetric PKCS#11 token key label 48 * 49 * Implementation notes: 50 * IV data - It is generated by random bytes equal to one block size. 51 * 52 * Encrypted output format - 53 * - Output format version number (1) - 4 bytes in network byte order. 54 * - Iterations used in key gen function, 4 bytes in network byte order. 55 * - IV ('ivlen' bytes). Length is algorithm-dependent (see mech_aliases) 56 * - Salt data used in key gen (16 bytes) 57 * - Cipher text data (remainder of the file) 58 */ 59 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <unistd.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <ctype.h> 66 #include <strings.h> 67 #include <libintl.h> 68 #include <libgen.h> 69 #include <locale.h> 70 #include <limits.h> 71 #include <sys/types.h> 72 #include <sys/stat.h> 73 #include <netinet/in.h> 74 #include <security/cryptoki.h> 75 #include <cryptoutil.h> 76 #include <kmfapi.h> 77 78 #define BUFFERSIZE (2048) /* Buffer size for reading file */ 79 #define BLOCKSIZE (128) /* Largest guess for block size */ 80 #define PROGRESSSIZE (BUFFERSIZE*20) /* stdin progress indicator size */ 81 82 #define SUNW_ENCRYPT_FILE_VERSION 1 83 84 /* 85 * Exit Status codes 86 */ 87 #ifndef EXIT_SUCCESS 88 #define EXIT_SUCCESS 0 /* No errors */ 89 #define EXIT_FAILURE 1 /* All errors except usage */ 90 #endif /* EXIT_SUCCESS */ 91 92 #define EXIT_USAGE 2 /* usage/syntax error */ 93 94 #define ENCRYPT_NAME "encrypt" /* name of encrypt command */ 95 #define ENCRYPT_OPTIONS "a:T:K:k:i:o:lv" /* options for encrypt */ 96 #define DECRYPT_NAME "decrypt" /* name of decrypt command */ 97 #define DECRYPT_OPTIONS "a:T:K:k:i:o:lv" /* options for decrypt */ 98 99 /* 100 * Structure containing info for encrypt/decrypt 101 * command 102 */ 103 struct CommandInfo { 104 char *name; /* name of the command */ 105 char *options; /* command line options */ 106 CK_FLAGS flags; 107 CK_ATTRIBUTE_TYPE type; /* type of command */ 108 109 /* function pointers for various operations */ 110 CK_RV (*Init)(CK_SESSION_HANDLE, CK_MECHANISM_PTR, CK_OBJECT_HANDLE); 111 CK_RV (*Update)(CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, 112 CK_ULONG_PTR); 113 CK_RV (*Crypt)(CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG, CK_BYTE_PTR, 114 CK_ULONG_PTR); 115 CK_RV (*Final)(CK_SESSION_HANDLE, CK_BYTE_PTR, CK_ULONG_PTR); 116 }; 117 118 static struct CommandInfo encrypt_cmd = { 119 ENCRYPT_NAME, 120 ENCRYPT_OPTIONS, 121 CKF_ENCRYPT, 122 CKA_ENCRYPT, 123 C_EncryptInit, 124 C_EncryptUpdate, 125 C_Encrypt, 126 C_EncryptFinal 127 }; 128 129 static struct CommandInfo decrypt_cmd = { 130 DECRYPT_NAME, 131 DECRYPT_OPTIONS, 132 CKF_DECRYPT, 133 CKA_DECRYPT, 134 C_DecryptInit, 135 C_DecryptUpdate, 136 C_Decrypt, 137 C_DecryptFinal 138 }; 139 140 struct mech_alias { 141 CK_MECHANISM_TYPE type; 142 char *alias; 143 CK_ULONG keysize_min; 144 CK_ULONG keysize_max; 145 int keysize_unit; 146 int ivlen; 147 boolean_t available; 148 }; 149 150 #define MECH_ALIASES_COUNT 4 151 152 static struct mech_alias mech_aliases[] = { 153 { CKM_AES_CBC_PAD, "aes", ULONG_MAX, 0L, 8, 16, B_FALSE }, 154 { CKM_RC4, "arcfour", ULONG_MAX, 0L, 1, 0, B_FALSE }, 155 { CKM_DES_CBC_PAD, "des", 8, 8, 8, 8, B_FALSE }, 156 { CKM_DES3_CBC_PAD, "3des", 24, 24, 8, 8, B_FALSE }, 157 }; 158 159 static CK_BBOOL truevalue = TRUE; 160 static CK_BBOOL falsevalue = FALSE; 161 162 static boolean_t aflag = B_FALSE; /* -a <algorithm> flag, required */ 163 static boolean_t kflag = B_FALSE; /* -k <keyfile> flag */ 164 static boolean_t iflag = B_FALSE; /* -i <infile> flag, use stdin if absent */ 165 static boolean_t oflag = B_FALSE; /* -o <outfile> flag, use stdout if absent */ 166 static boolean_t lflag = B_FALSE; /* -l flag (list) */ 167 static boolean_t vflag = B_FALSE; /* -v flag (verbose) */ 168 static boolean_t Tflag = B_FALSE; /* -T flag (tokenspec) */ 169 static boolean_t Kflag = B_FALSE; /* -K flag (keylabel) */ 170 171 static char *keyfile = NULL; /* name of keyfile */ 172 static char *inputfile = NULL; /* name of input file */ 173 static char *outputfile = NULL; /* name of output file */ 174 static char *token_label = NULL; /* name of PKCS#11 token */ 175 static char *key_label = NULL; /* name of PKCS#11 token key label */ 176 177 static int status_pos = 0; /* current position of progress bar element */ 178 179 /* 180 * function prototypes 181 */ 182 static void usage(struct CommandInfo *cmd); 183 static int execute_cmd(struct CommandInfo *cmd, char *algo_str); 184 static int crypt_multipart(struct CommandInfo *cmd, CK_SESSION_HANDLE hSession, 185 int infd, int outfd, off_t insize); 186 187 int 188 main(int argc, char **argv) 189 { 190 191 extern char *optarg; 192 extern int optind; 193 char *optstr; 194 char c; /* current getopts flag */ 195 char *algo_str = NULL; /* algorithm string */ 196 struct CommandInfo *cmd; 197 char *cmdname; /* name of command */ 198 boolean_t errflag = B_FALSE; 199 200 (void) setlocale(LC_ALL, ""); 201 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 202 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 203 #endif 204 (void) textdomain(TEXT_DOMAIN); 205 206 /* 207 * Based on command name, determine 208 * type of command. 209 */ 210 cmdname = basename(argv[0]); 211 212 cryptodebug_init(cmdname); 213 214 if (strcmp(cmdname, encrypt_cmd.name) == 0) { 215 cmd = &encrypt_cmd; 216 } else if (strcmp(cmdname, decrypt_cmd.name) == 0) { 217 cmd = &decrypt_cmd; 218 } else { 219 cryptoerror(LOG_STDERR, gettext( 220 "command name must be either encrypt or decrypt")); 221 exit(EXIT_USAGE); 222 } 223 224 optstr = cmd->options; 225 226 /* Parse command line arguments */ 227 while (!errflag && (c = getopt(argc, argv, optstr)) != -1) { 228 229 switch (c) { 230 case 'a': 231 aflag = B_TRUE; 232 algo_str = optarg; 233 break; 234 case 'k': 235 kflag = B_TRUE; 236 keyfile = optarg; 237 break; 238 case 'T': 239 Tflag = B_TRUE; 240 token_label = optarg; 241 break; 242 case 'K': 243 Kflag = B_TRUE; 244 key_label = optarg; 245 break; 246 case 'i': 247 iflag = B_TRUE; 248 inputfile = optarg; 249 break; 250 case 'o': 251 oflag = B_TRUE; 252 outputfile = optarg; 253 break; 254 case 'l': 255 lflag = B_TRUE; 256 break; 257 case 'v': 258 vflag = B_TRUE; 259 break; 260 default: 261 errflag = B_TRUE; 262 } 263 } 264 265 if (errflag || (!aflag && !lflag) || (lflag && argc > 2) || 266 (kflag && Kflag) || (Tflag && !Kflag) || 267 (optind < argc)) { 268 usage(cmd); 269 exit(EXIT_USAGE); 270 } 271 272 return (execute_cmd(cmd, algo_str)); 273 } 274 275 /* 276 * usage message 277 */ 278 static void 279 usage(struct CommandInfo *cmd) 280 { 281 (void) fprintf(stderr, gettext("Usage:\n")); 282 if (cmd->type == CKA_ENCRYPT) { 283 (void) fprintf(stderr, gettext(" encrypt -l\n")); 284 (void) fprintf(stderr, gettext(" encrypt -a <algorithm> " 285 "[-v] [-k <keyfile> | -K <keylabel> [-T <tokenspec>]] " 286 "[-i <infile>] [-o <outfile>]\n")); 287 288 } else { 289 (void) fprintf(stderr, gettext(" decrypt -l\n")); 290 (void) fprintf(stderr, gettext(" decrypt -a <algorithm> " 291 "[-v] [-k <keyfile> | -K <keylabel> [-T <tokenspec>]] " 292 "[-i <infile>] [-o <outfile>]\n")); 293 } 294 } 295 296 /* 297 * Print out list of algorithms in default and verbose mode 298 */ 299 static void 300 algorithm_list() 301 { 302 int mech; 303 304 (void) printf(gettext("Algorithm Keysize: Min Max (bits)\n" 305 "------------------------------------------\n")); 306 307 for (mech = 0; mech < MECH_ALIASES_COUNT; mech++) { 308 309 if (mech_aliases[mech].available == B_FALSE) 310 continue; 311 312 (void) printf("%-15s", mech_aliases[mech].alias); 313 314 if (mech_aliases[mech].keysize_min != UINT_MAX && 315 mech_aliases[mech].keysize_max != 0) 316 (void) printf(" %5lu %5lu\n", 317 (mech_aliases[mech].keysize_min * 318 mech_aliases[mech].keysize_unit), 319 (mech_aliases[mech].keysize_max * 320 mech_aliases[mech].keysize_unit)); 321 else 322 (void) printf("\n"); 323 324 } 325 } 326 327 /* 328 * This function will login into the token with the provided password and 329 * find the token key object with the specified keytype and keylabel. 330 */ 331 static int 332 get_token_key(CK_SESSION_HANDLE hSession, CK_KEY_TYPE keytype, 333 char *keylabel, CK_BYTE *password, int password_len, 334 CK_OBJECT_HANDLE *keyobj) 335 { 336 CK_RV rv; 337 CK_ATTRIBUTE pTmpl[10]; 338 CK_OBJECT_CLASS class = CKO_SECRET_KEY; 339 CK_BBOOL true = 1; 340 CK_BBOOL is_token = 1; 341 CK_ULONG key_obj_count = 1; 342 int i; 343 CK_KEY_TYPE ckKeyType = keytype; 344 345 346 rv = C_Login(hSession, CKU_USER, (CK_UTF8CHAR_PTR)password, 347 (CK_ULONG)password_len); 348 if (rv != CKR_OK) { 349 (void) fprintf(stderr, "Cannot login to the token." 350 " error = %s\n", pkcs11_strerror(rv)); 351 return (-1); 352 } 353 354 i = 0; 355 pTmpl[i].type = CKA_TOKEN; 356 pTmpl[i].pValue = &is_token; 357 pTmpl[i].ulValueLen = sizeof (CK_BBOOL); 358 i++; 359 360 pTmpl[i].type = CKA_CLASS; 361 pTmpl[i].pValue = &class; 362 pTmpl[i].ulValueLen = sizeof (class); 363 i++; 364 365 pTmpl[i].type = CKA_LABEL; 366 pTmpl[i].pValue = keylabel; 367 pTmpl[i].ulValueLen = strlen(keylabel); 368 i++; 369 370 pTmpl[i].type = CKA_KEY_TYPE; 371 pTmpl[i].pValue = &ckKeyType; 372 pTmpl[i].ulValueLen = sizeof (ckKeyType); 373 i++; 374 375 pTmpl[i].type = CKA_PRIVATE; 376 pTmpl[i].pValue = &true; 377 pTmpl[i].ulValueLen = sizeof (true); 378 i++; 379 380 rv = C_FindObjectsInit(hSession, pTmpl, i); 381 if (rv != CKR_OK) { 382 goto out; 383 } 384 385 rv = C_FindObjects(hSession, keyobj, 1, &key_obj_count); 386 387 (void) C_FindObjectsFinal(hSession); 388 389 out: 390 if (rv != CKR_OK) { 391 (void) fprintf(stderr, 392 "Cannot retrieve key object. error = %s\n", 393 pkcs11_strerror(rv)); 394 return (-1); 395 } 396 397 if (key_obj_count == 0) { 398 (void) fprintf(stderr, "Cannot find the key object.\n"); 399 return (-1); 400 } 401 402 return (0); 403 } 404 405 406 /* 407 * Execute the command. 408 * cmd - command pointing to type of operation. 409 * algo_str - alias of the algorithm passed. 410 */ 411 static int 412 execute_cmd(struct CommandInfo *cmd, char *algo_str) 413 { 414 CK_RV rv; 415 CK_ULONG slotcount; 416 CK_SLOT_ID slotID; 417 CK_SLOT_ID_PTR pSlotList = NULL; 418 CK_MECHANISM_TYPE mech_type = 0; 419 CK_MECHANISM_INFO info, kg_info; 420 CK_MECHANISM mech; 421 CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE; 422 CK_BYTE_PTR pkeydata = NULL; 423 CK_BYTE salt[CK_PKCS5_PBKD2_SALT_SIZE]; 424 CK_ULONG keysize = 0; 425 int i, slot, mek; /* index variables */ 426 int status; 427 struct stat insbuf; /* stat buf for infile */ 428 struct stat outsbuf; /* stat buf for outfile */ 429 char tmpnam[PATH_MAX]; /* tmp file name */ 430 CK_OBJECT_HANDLE key = (CK_OBJECT_HANDLE) 0; 431 int infd = 0; /* input file, stdin default */ 432 int outfd = 1; /* output file, stdout default */ 433 char *outfilename = NULL; 434 boolean_t errflag = B_TRUE; 435 boolean_t inoutsame = B_FALSE; /* if both input & output are same */ 436 CK_BYTE_PTR pivbuf = NULL_PTR; 437 CK_ULONG ivlen = 0L; 438 int mech_match = 0; 439 uint32_t iterations = CK_PKCS5_PBKD2_ITERATIONS; 440 CK_ULONG keylen; 441 uint32_t version = SUNW_ENCRYPT_FILE_VERSION; 442 CK_KEY_TYPE keytype; 443 KMF_RETURN kmfrv; 444 CK_SLOT_ID token_slot_id; 445 446 if (aflag) { 447 /* Determine if algorithm is valid */ 448 for (mech_match = 0; mech_match < MECH_ALIASES_COUNT; 449 mech_match++) { 450 if (strcmp(algo_str, 451 mech_aliases[mech_match].alias) == 0) { 452 mech_type = mech_aliases[mech_match].type; 453 break; 454 } 455 } 456 457 if (mech_match == MECH_ALIASES_COUNT) { 458 cryptoerror(LOG_STDERR, 459 gettext("unknown algorithm -- %s"), algo_str); 460 return (EXIT_FAILURE); 461 } 462 463 /* 464 * Process keyfile or get the token pin if -K is specified. 465 * 466 * If a keyfile is provided, get the key data from 467 * the file. Otherwise, prompt for a passphrase. The 468 * passphrase is used as the key data. 469 */ 470 if (Kflag) { 471 /* get the pin of the token */ 472 if (token_label == NULL || !strlen(token_label)) { 473 token_label = pkcs11_default_token(); 474 } 475 476 status = pkcs11_get_pass(token_label, 477 (char **)&pkeydata, (size_t *)&keysize, 0, B_FALSE); 478 } else if (kflag) { 479 /* get the key file */ 480 status = pkcs11_read_data(keyfile, (void **)&pkeydata, 481 (size_t *)&keysize); 482 } else { 483 /* get the key from input */ 484 status = pkcs11_get_pass(NULL, (char **)&pkeydata, 485 (size_t *)&keysize, 0, B_FALSE); 486 } 487 488 if (status != 0 || keysize == 0L) { 489 cryptoerror(LOG_STDERR, 490 Kflag ? gettext("invalid password.") : 491 gettext("invalid key.")); 492 return (EXIT_FAILURE); 493 } 494 } 495 496 bzero(salt, sizeof (salt)); 497 /* Initialize pkcs */ 498 rv = C_Initialize(NULL); 499 if (rv != CKR_OK && rv != CKR_CRYPTOKI_ALREADY_INITIALIZED) { 500 cryptoerror(LOG_STDERR, gettext("failed to initialize " 501 "PKCS #11 framework: %s"), pkcs11_strerror(rv)); 502 goto cleanup; 503 } 504 505 /* Get slot count */ 506 rv = C_GetSlotList(0, NULL_PTR, &slotcount); 507 if (rv != CKR_OK || slotcount == 0) { 508 cryptoerror(LOG_STDERR, gettext( 509 "failed to find any cryptographic provider," 510 "please check with your system administrator: %s"), 511 pkcs11_strerror(rv)); 512 goto cleanup; 513 } 514 515 /* Found at least one slot, allocate memory for slot list */ 516 pSlotList = malloc(slotcount * sizeof (CK_SLOT_ID)); 517 if (pSlotList == NULL_PTR) { 518 int err = errno; 519 cryptoerror(LOG_STDERR, gettext("malloc: %s"), strerror(err)); 520 goto cleanup; 521 } 522 523 /* Get the list of slots */ 524 if ((rv = C_GetSlotList(0, pSlotList, &slotcount)) != CKR_OK) { 525 cryptoerror(LOG_STDERR, gettext( 526 "failed to find any cryptographic provider," 527 "please check with your system administrator: %s"), 528 pkcs11_strerror(rv)); 529 goto cleanup; 530 } 531 532 if (lflag) { 533 534 /* Iterate through slots */ 535 for (slot = 0; slot < slotcount; slot++) { 536 537 /* Iterate through each mechanism */ 538 for (mek = 0; mek < MECH_ALIASES_COUNT; mek++) { 539 rv = C_GetMechanismInfo(pSlotList[slot], 540 mech_aliases[mek].type, &info); 541 542 if (rv != CKR_OK) 543 continue; 544 545 /* 546 * Set to minimum/maximum key sizes assuming 547 * the values available are not 0. 548 */ 549 if (info.ulMinKeySize && (info.ulMinKeySize < 550 mech_aliases[mek].keysize_min)) 551 mech_aliases[mek].keysize_min = 552 info.ulMinKeySize; 553 554 if (info.ulMaxKeySize && (info.ulMaxKeySize > 555 mech_aliases[mek].keysize_max)) 556 mech_aliases[mek].keysize_max = 557 info.ulMaxKeySize; 558 559 mech_aliases[mek].available = B_TRUE; 560 } 561 562 } 563 564 algorithm_list(); 565 566 errflag = B_FALSE; 567 goto cleanup; 568 } 569 570 571 /* 572 * Find a slot with matching mechanism 573 * 574 * If -K is specified, we find the slot id for the token first, then 575 * check if the slot supports the algorithm. 576 */ 577 i = 0; 578 if (Kflag) { 579 kmfrv = kmf_pk11_token_lookup(NULL, token_label, 580 &token_slot_id); 581 if (kmfrv != KMF_OK) { 582 cryptoerror(LOG_STDERR, 583 gettext("no matching PKCS#11 token")); 584 errflag = B_TRUE; 585 goto cleanup; 586 } 587 rv = C_GetMechanismInfo(token_slot_id, mech_type, &info); 588 if (rv == CKR_OK && (info.flags & cmd->flags)) 589 slotID = token_slot_id; 590 else 591 i = slotcount; 592 } else { 593 for (i = 0; i < slotcount; i++) { 594 slotID = pSlotList[i]; 595 rv = C_GetMechanismInfo(slotID, mech_type, &info); 596 if (rv != CKR_OK) { 597 continue; /* to the next slot */ 598 } else { 599 /* 600 * If the slot support the crypto, also 601 * make sure it supports the correct 602 * key generation mech if needed. 603 * 604 * We need PKCS5 when RC4 is used or 605 * when the key is entered on cmd line. 606 */ 607 if ((info.flags & cmd->flags) && 608 (mech_type == CKM_RC4) || 609 (keyfile == NULL)) { 610 rv = C_GetMechanismInfo(slotID, 611 CKM_PKCS5_PBKD2, &kg_info); 612 if (rv == CKR_OK) 613 break; 614 } else if (info.flags & cmd->flags) { 615 break; 616 } 617 } 618 } 619 } 620 621 /* Show error if no matching mechanism found */ 622 if (i == slotcount) { 623 cryptoerror(LOG_STDERR, 624 gettext("no cryptographic provider was " 625 "found for this algorithm -- %s"), algo_str); 626 goto cleanup; 627 } 628 629 /* Open a session */ 630 rv = C_OpenSession(slotID, CKF_SERIAL_SESSION, 631 NULL_PTR, NULL, &hSession); 632 633 if (rv != CKR_OK) { 634 cryptoerror(LOG_STDERR, 635 gettext("can not open PKCS #11 session: %s"), 636 pkcs11_strerror(rv)); 637 goto cleanup; 638 } 639 640 /* 641 * Generate IV data for encrypt. 642 */ 643 ivlen = mech_aliases[mech_match].ivlen; 644 if ((pivbuf = malloc((size_t)ivlen)) == NULL) { 645 int err = errno; 646 cryptoerror(LOG_STDERR, gettext("malloc: %s"), 647 strerror(err)); 648 goto cleanup; 649 } 650 651 if (cmd->type == CKA_ENCRYPT) { 652 if ((pkcs11_random_data((void *)pivbuf, 653 mech_aliases[mech_match].ivlen)) != 0) { 654 cryptoerror(LOG_STDERR, gettext( 655 "Unable to generate random " 656 "data for initialization vector.")); 657 goto cleanup; 658 } 659 } 660 661 /* 662 * Create the key object 663 */ 664 rv = pkcs11_mech2keytype(mech_type, &keytype); 665 if (rv != CKR_OK) { 666 cryptoerror(LOG_STDERR, 667 gettext("unable to find key type for algorithm.")); 668 goto cleanup; 669 } 670 671 /* Open input file */ 672 if (iflag) { 673 if ((infd = open(inputfile, O_RDONLY | O_NONBLOCK)) == -1) { 674 cryptoerror(LOG_STDERR, gettext( 675 "can not open input file %s"), inputfile); 676 goto cleanup; 677 } 678 679 /* Get info on input file */ 680 if (fstat(infd, &insbuf) == -1) { 681 cryptoerror(LOG_STDERR, gettext( 682 "can not stat input file %s"), inputfile); 683 goto cleanup; 684 } 685 } 686 687 /* 688 * Prepare output file 689 * If the input & output file are same, 690 * the output is written to a temp 691 * file first, then renamed to the original file 692 * after the crypt operation 693 */ 694 inoutsame = B_FALSE; 695 if (oflag) { 696 outfilename = outputfile; 697 if ((stat(outputfile, &outsbuf) != -1) && 698 (insbuf.st_ino == outsbuf.st_ino)) { 699 char *dir; 700 701 /* create temp file on same dir */ 702 dir = dirname(outputfile); 703 (void) snprintf(tmpnam, sizeof (tmpnam), 704 "%s/encrXXXXXX", dir); 705 outfilename = tmpnam; 706 if ((outfd = mkstemp(tmpnam)) == -1) { 707 cryptoerror(LOG_STDERR, gettext( 708 "cannot create temp file")); 709 goto cleanup; 710 } 711 inoutsame = B_TRUE; 712 } else { 713 /* Create file for output */ 714 if ((outfd = open(outfilename, 715 O_CREAT|O_WRONLY|O_TRUNC, 0644)) == -1) { 716 cryptoerror(LOG_STDERR, gettext( 717 "cannot open output file %s"), 718 outfilename); 719 goto cleanup; 720 } 721 } 722 } 723 724 /* 725 * Read the version number from the head of the file 726 * to know how to interpret the data that follows. 727 */ 728 if (cmd->type == CKA_DECRYPT) { 729 if (read(infd, &version, sizeof (version)) != 730 sizeof (version)) { 731 cryptoerror(LOG_STDERR, gettext( 732 "failed to get format version from " 733 "input file.")); 734 goto cleanup; 735 } 736 /* convert to host byte order */ 737 version = ntohl(version); 738 739 switch (version) { 740 case 1: 741 /* 742 * Version 1 output format: 743 * - Output format version 1 (4 bytes) 744 * - Iterations used in key gen function (4 bytes) 745 * - IV ('ivlen' bytes). The length algorithm-dependent 746 * - Salt data used in key gen (16 bytes) 747 * - Cipher text data (remainder of the file) 748 * 749 * An encrypted file has IV as first block (0 or 750 * more bytes depending on mechanism) followed 751 * by cipher text. Get the IV from the encrypted 752 * file. 753 */ 754 /* 755 * Read iteration count and salt data. 756 */ 757 if (read(infd, &iterations, 758 sizeof (iterations)) != sizeof (iterations)) { 759 cryptoerror(LOG_STDERR, gettext( 760 "failed to get iterations from " 761 "input file.")); 762 goto cleanup; 763 } 764 /* convert to host byte order */ 765 iterations = ntohl(iterations); 766 if (ivlen > 0 && 767 read(infd, pivbuf, ivlen) != ivlen) { 768 cryptoerror(LOG_STDERR, gettext( 769 "failed to get initialization " 770 "vector from input file.")); 771 goto cleanup; 772 } 773 if (read(infd, salt, sizeof (salt)) 774 != sizeof (salt)) { 775 cryptoerror(LOG_STDERR, gettext( 776 "failed to get salt data from " 777 "input file.")); 778 goto cleanup; 779 } 780 break; 781 default: 782 cryptoerror(LOG_STDERR, gettext( 783 "Unrecognized format version read from " 784 "input file - expected %d, got %d."), 785 SUNW_ENCRYPT_FILE_VERSION, version); 786 goto cleanup; 787 break; 788 } 789 } 790 791 /* 792 * If Kflag is set, let's find the token key now. 793 * 794 * If Kflag is not set and if encrypting, we need some random 795 * salt data to create the key. If decrypting, 796 * the salt should come from head of the file 797 * to be decrypted. 798 */ 799 if (Kflag) { 800 rv = get_token_key(hSession, keytype, key_label, pkeydata, 801 keysize, &key); 802 if (rv != CKR_OK) { 803 cryptoerror(LOG_STDERR, gettext( 804 "Can not find the token key")); 805 goto cleanup; 806 } else { 807 goto do_crypto; 808 } 809 } else if (cmd->type == CKA_ENCRYPT) { 810 rv = pkcs11_random_data((void *)salt, sizeof (salt)); 811 if (rv != 0) { 812 cryptoerror(LOG_STDERR, 813 gettext("unable to generate random " 814 "data for key salt.")); 815 goto cleanup; 816 } 817 } 818 819 820 /* 821 * If key input is read from a file, treat it as 822 * raw key data, unless it is to be used with RC4, 823 * in which case it must be used to generate a pkcs5 824 * key to address security concerns with RC4 keys. 825 */ 826 if (kflag && keyfile != NULL && keytype != CKK_RC4) { 827 /* XXX : why wasn't SUNW_C_KeyToObject used here? */ 828 CK_OBJECT_CLASS objclass = CKO_SECRET_KEY; 829 CK_ATTRIBUTE template[5]; 830 int nattr = 0; 831 832 template[nattr].type = CKA_CLASS; 833 template[nattr].pValue = &objclass; 834 template[nattr].ulValueLen = sizeof (objclass); 835 nattr++; 836 837 template[nattr].type = CKA_KEY_TYPE; 838 template[nattr].pValue = &keytype; 839 template[nattr].ulValueLen = sizeof (keytype); 840 nattr++; 841 842 template[nattr].type = cmd->type; 843 template[nattr].pValue = &truevalue; 844 template[nattr].ulValueLen = sizeof (truevalue); 845 nattr++; 846 847 template[nattr].type = CKA_TOKEN; 848 template[nattr].pValue = &falsevalue; 849 template[nattr].ulValueLen = sizeof (falsevalue); 850 nattr++; 851 852 template[nattr].type = CKA_VALUE; 853 template[nattr].pValue = pkeydata; 854 template[nattr].ulValueLen = keysize; 855 nattr++; 856 857 rv = C_CreateObject(hSession, template, nattr, &key); 858 } else { 859 /* 860 * If the encryption type has a fixed key length, 861 * then its not necessary to set the key length 862 * parameter when generating the key. 863 */ 864 if (keytype == CKK_DES || keytype == CKK_DES3) 865 keylen = 0; 866 else 867 keylen = 16; 868 869 /* 870 * Generate a cryptographically secure key using 871 * the key read from the file given (-k keyfile) or 872 * the passphrase entered by the user. 873 */ 874 rv = pkcs11_PasswdToPBKD2Object(hSession, (char *)pkeydata, 875 (size_t)keysize, (void *)salt, sizeof (salt), iterations, 876 keytype, keylen, cmd->flags, &key); 877 } 878 879 if (rv != CKR_OK) { 880 cryptoerror(LOG_STDERR, gettext( 881 "failed to generate a key: %s"), 882 pkcs11_strerror(rv)); 883 goto cleanup; 884 } 885 886 887 do_crypto: 888 /* Setup up mechanism */ 889 mech.mechanism = mech_type; 890 mech.pParameter = (CK_VOID_PTR)pivbuf; 891 mech.ulParameterLen = ivlen; 892 893 if ((rv = cmd->Init(hSession, &mech, key)) != CKR_OK) { 894 cryptoerror(LOG_STDERR, gettext( 895 "failed to initialize crypto operation: %s"), 896 pkcs11_strerror(rv)); 897 goto cleanup; 898 } 899 900 /* Write the version header encrypt command */ 901 if (cmd->type == CKA_ENCRYPT) { 902 /* convert to network order for storage */ 903 uint32_t netversion = htonl(version); 904 uint32_t netiter; 905 906 if (write(outfd, &netversion, sizeof (netversion)) 907 != sizeof (netversion)) { 908 cryptoerror(LOG_STDERR, gettext( 909 "failed to write version number " 910 "to output file.")); 911 goto cleanup; 912 } 913 /* 914 * Write the iteration and salt data, even if they 915 * were not used to generate a key. 916 */ 917 netiter = htonl(iterations); 918 if (write(outfd, &netiter, 919 sizeof (netiter)) != sizeof (netiter)) { 920 cryptoerror(LOG_STDERR, gettext( 921 "failed to write iterations to output")); 922 goto cleanup; 923 } 924 if (ivlen > 0 && write(outfd, pivbuf, ivlen) != ivlen) { 925 cryptoerror(LOG_STDERR, gettext( 926 "failed to write initialization vector " 927 "to output")); 928 goto cleanup; 929 } 930 if (write(outfd, salt, sizeof (salt)) != sizeof (salt)) { 931 cryptoerror(LOG_STDERR, gettext( 932 "failed to write salt data to output")); 933 goto cleanup; 934 } 935 } 936 937 if (crypt_multipart(cmd, hSession, infd, outfd, insbuf.st_size) == -1) { 938 goto cleanup; 939 } 940 941 errflag = B_FALSE; 942 943 /* 944 * Clean up 945 */ 946 cleanup: 947 /* Clear the key data, so others cannot snoop */ 948 if (pkeydata != NULL) { 949 bzero(pkeydata, keysize); 950 free(pkeydata); 951 pkeydata = NULL; 952 } 953 954 /* Destroy key object */ 955 if (Kflag != B_FALSE && key != (CK_OBJECT_HANDLE) 0) { 956 (void) C_DestroyObject(hSession, key); 957 } 958 959 /* free allocated memory */ 960 if (pSlotList != NULL) 961 free(pSlotList); 962 if (pivbuf != NULL) 963 free(pivbuf); 964 965 /* close all the files */ 966 if (iflag && (infd != -1)) 967 (void) close(infd); 968 if (oflag && (outfd != -1)) 969 (void) close(outfd); 970 971 /* rename tmp output to input file */ 972 if (inoutsame) { 973 if (rename(outfilename, inputfile) == -1) { 974 (void) unlink(outfilename); 975 cryptoerror(LOG_STDERR, gettext("rename failed.")); 976 } 977 } 978 979 /* If error occurred, remove the output file */ 980 if (errflag && outfilename != NULL) { 981 (void) unlink(outfilename); 982 } 983 984 /* close pkcs11 session */ 985 if (hSession != CK_INVALID_HANDLE) 986 (void) C_CloseSession(hSession); 987 988 (void) C_Finalize(NULL); 989 990 return (errflag); 991 } 992 993 /* 994 * Function for printing progress bar when the verbose flag 995 * is set. 996 * 997 * The vertical bar is printed at 25, 50, and 75% complete. 998 * 999 * The function is passed the number of positions on the screen it needs to 1000 * advance and loops. 1001 */ 1002 1003 static void 1004 print_status(int pos_to_advance) 1005 { 1006 1007 while (pos_to_advance > 0) { 1008 switch (status_pos) { 1009 case 0: 1010 (void) fprintf(stderr, gettext("[")); 1011 break; 1012 case 19: 1013 case 39: 1014 case 59: 1015 (void) fprintf(stderr, gettext("|")); 1016 break; 1017 default: 1018 (void) fprintf(stderr, gettext(".")); 1019 } 1020 pos_to_advance--; 1021 status_pos++; 1022 } 1023 } 1024 1025 /* 1026 * Encrypt/Decrypt in multi part. 1027 * 1028 * This function reads the input file (infd) and writes the 1029 * encrypted/decrypted output to file (outfd). 1030 * 1031 * cmd - pointing to commandinfo 1032 * hSession - pkcs session 1033 * infd - input file descriptor 1034 * outfd - output file descriptor 1035 * 1036 */ 1037 1038 static int 1039 crypt_multipart(struct CommandInfo *cmd, CK_SESSION_HANDLE hSession, 1040 int infd, int outfd, off_t insize) 1041 { 1042 CK_RV rv; 1043 CK_ULONG resultlen; 1044 CK_ULONG resultbuflen; 1045 CK_BYTE_PTR resultbuf; 1046 CK_ULONG datalen; 1047 CK_BYTE databuf[BUFFERSIZE]; 1048 CK_BYTE outbuf[BUFFERSIZE+BLOCKSIZE]; 1049 CK_ULONG status_index = 0; /* current total file size read */ 1050 float status_last = 0.0; /* file size of last element used */ 1051 float status_incr = 0.0; /* file size element increments */ 1052 int pos; /* # of progress bar elements to be print */ 1053 ssize_t nread; 1054 boolean_t errflag = B_FALSE; 1055 1056 datalen = sizeof (databuf); 1057 resultbuflen = sizeof (outbuf); 1058 resultbuf = outbuf; 1059 1060 /* Divide into 79 increments for progress bar element spacing */ 1061 if (vflag && iflag) 1062 status_incr = (insize / 79.0); 1063 1064 while ((nread = read(infd, databuf, datalen)) > 0) { 1065 1066 /* Start with the initial buffer */ 1067 resultlen = resultbuflen; 1068 rv = cmd->Update(hSession, databuf, (CK_ULONG)nread, 1069 resultbuf, &resultlen); 1070 1071 /* Need a bigger buffer? */ 1072 if (rv == CKR_BUFFER_TOO_SMALL) { 1073 1074 /* free the old buffer */ 1075 if (resultbuf != NULL && resultbuf != outbuf) { 1076 bzero(resultbuf, resultbuflen); 1077 free(resultbuf); 1078 } 1079 1080 /* allocate a new big buffer */ 1081 if ((resultbuf = malloc((size_t)resultlen)) == NULL) { 1082 int err = errno; 1083 cryptoerror(LOG_STDERR, gettext("malloc: %s"), 1084 strerror(err)); 1085 return (-1); 1086 } 1087 resultbuflen = resultlen; 1088 1089 /* Try again with bigger buffer */ 1090 rv = cmd->Update(hSession, databuf, (CK_ULONG)nread, 1091 resultbuf, &resultlen); 1092 } 1093 1094 if (rv != CKR_OK) { 1095 errflag = B_TRUE; 1096 cryptoerror(LOG_STDERR, gettext( 1097 "crypto operation failed: %s"), 1098 pkcs11_strerror(rv)); 1099 break; 1100 } 1101 1102 /* write the output */ 1103 if (write(outfd, resultbuf, resultlen) != resultlen) { 1104 cryptoerror(LOG_STDERR, gettext( 1105 "failed to write result to output file.")); 1106 errflag = B_TRUE; 1107 break; 1108 } 1109 1110 if (vflag) { 1111 status_index += resultlen; 1112 1113 /* 1114 * If input is from stdin, do a our own progress bar 1115 * by printing periods at a pre-defined increment 1116 * until the file is done. 1117 */ 1118 if (!iflag) { 1119 1120 /* 1121 * Print at least 1 element in case the file 1122 * is small, it looks better than nothing. 1123 */ 1124 if (status_pos == 0) { 1125 (void) fprintf(stderr, gettext(".")); 1126 status_pos = 1; 1127 } 1128 1129 if ((status_index - status_last) > 1130 (PROGRESSSIZE)) { 1131 (void) fprintf(stderr, gettext(".")); 1132 status_last = status_index; 1133 } 1134 continue; 1135 } 1136 1137 /* Calculate the number of elements need to be print */ 1138 if (insize <= BUFFERSIZE) 1139 pos = 78; 1140 else 1141 pos = (int)((status_index - status_last) / 1142 status_incr); 1143 1144 /* Add progress bar elements, if needed */ 1145 if (pos > 0) { 1146 print_status(pos); 1147 status_last += (status_incr * pos); 1148 } 1149 } 1150 } 1151 1152 /* Print verbose completion */ 1153 if (vflag) { 1154 if (iflag) 1155 (void) fprintf(stderr, "]"); 1156 1157 (void) fprintf(stderr, "\n%s\n", gettext("Done.")); 1158 } 1159 1160 /* Error in reading */ 1161 if (nread == -1) { 1162 cryptoerror(LOG_STDERR, gettext( 1163 "error reading from input file")); 1164 errflag = B_TRUE; 1165 } 1166 1167 if (!errflag) { 1168 1169 /* Do the final part */ 1170 1171 rv = cmd->Final(hSession, resultbuf, &resultlen); 1172 1173 if (rv == CKR_OK) { 1174 /* write the output */ 1175 if (write(outfd, resultbuf, resultlen) != resultlen) { 1176 cryptoerror(LOG_STDERR, gettext( 1177 "failed to write result to output file.")); 1178 errflag = B_TRUE; 1179 } 1180 } else { 1181 cryptoerror(LOG_STDERR, gettext( 1182 "crypto operation failed: %s"), 1183 pkcs11_strerror(rv)); 1184 errflag = B_TRUE; 1185 } 1186 1187 } 1188 1189 if (resultbuf != NULL && resultbuf != outbuf) { 1190 bzero(resultbuf, resultbuflen); 1191 free(resultbuf); 1192 } 1193 1194 if (errflag) { 1195 return (-1); 1196 } else { 1197 return (0); 1198 } 1199 } 1200