1 /* $OpenBSD: cms.c,v 1.5 2015/10/17 07:51:10 semarie Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 */ 53 54 /* CMS utility function */ 55 56 #include <stdio.h> 57 #include <string.h> 58 59 #include "apps.h" 60 61 #ifndef OPENSSL_NO_CMS 62 63 #include <openssl/cms.h> 64 #include <openssl/crypto.h> 65 #include <openssl/err.h> 66 #include <openssl/pem.h> 67 #include <openssl/x509_vfy.h> 68 #include <openssl/x509v3.h> 69 70 static int save_certs(char *signerfile, STACK_OF(X509) * signers); 71 static int cms_cb(int ok, X509_STORE_CTX * ctx); 72 static void receipt_request_print(BIO * out, CMS_ContentInfo * cms); 73 static CMS_ReceiptRequest * make_receipt_request( 74 STACK_OF(OPENSSL_STRING) * rr_to, int rr_allorfirst, 75 STACK_OF(OPENSSL_STRING) * rr_from); 76 77 #define SMIME_OP 0x10 78 #define SMIME_IP 0x20 79 #define SMIME_SIGNERS 0x40 80 #define SMIME_ENCRYPT (1 | SMIME_OP) 81 #define SMIME_DECRYPT (2 | SMIME_IP) 82 #define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS) 83 #define SMIME_VERIFY (4 | SMIME_IP) 84 #define SMIME_CMSOUT (5 | SMIME_IP | SMIME_OP) 85 #define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS) 86 #define SMIME_DATAOUT (7 | SMIME_IP) 87 #define SMIME_DATA_CREATE (8 | SMIME_OP) 88 #define SMIME_DIGEST_VERIFY (9 | SMIME_IP) 89 #define SMIME_DIGEST_CREATE (10 | SMIME_OP) 90 #define SMIME_UNCOMPRESS (11 | SMIME_IP) 91 #define SMIME_COMPRESS (12 | SMIME_OP) 92 #define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP) 93 #define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP) 94 #define SMIME_SIGN_RECEIPT (15 | SMIME_IP | SMIME_OP) 95 #define SMIME_VERIFY_RECEIPT (16 | SMIME_IP) 96 97 int verify_err = 0; 98 99 int 100 cms_main(int argc, char **argv) 101 { 102 int operation = 0; 103 int ret = 0; 104 char **args; 105 const char *inmode = "r", *outmode = "w"; 106 char *infile = NULL, *outfile = NULL, *rctfile = NULL; 107 char *signerfile = NULL, *recipfile = NULL; 108 STACK_OF(OPENSSL_STRING) * sksigners = NULL, *skkeys = NULL; 109 char *certfile = NULL, *keyfile = NULL, *contfile = NULL; 110 char *certsoutfile = NULL; 111 const EVP_CIPHER *cipher = NULL; 112 CMS_ContentInfo *cms = NULL, *rcms = NULL; 113 X509_STORE *store = NULL; 114 X509 *cert = NULL, *recip = NULL, *signer = NULL; 115 EVP_PKEY *key = NULL; 116 STACK_OF(X509) * encerts = NULL, *other = NULL; 117 BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL; 118 int badarg = 0; 119 int flags = CMS_DETACHED, noout = 0, print = 0; 120 int verify_retcode = 0; 121 int rr_print = 0, rr_allorfirst = -1; 122 STACK_OF(OPENSSL_STRING) * rr_to = NULL, *rr_from = NULL; 123 CMS_ReceiptRequest *rr = NULL; 124 char *to = NULL, *from = NULL, *subject = NULL; 125 char *CAfile = NULL, *CApath = NULL; 126 char *passargin = NULL, *passin = NULL; 127 const EVP_MD *sign_md = NULL; 128 int informat = FORMAT_SMIME, outformat = FORMAT_SMIME; 129 int rctformat = FORMAT_SMIME, keyform = FORMAT_PEM; 130 unsigned char *secret_key = NULL, *secret_keyid = NULL; 131 unsigned char *pwri_pass = NULL, *pwri_tmp = NULL; 132 size_t secret_keylen = 0, secret_keyidlen = 0; 133 134 ASN1_OBJECT *econtent_type = NULL; 135 136 X509_VERIFY_PARAM *vpm = NULL; 137 138 if (single_execution) { 139 if (pledge("stdio rpath wpath cpath tty", NULL) == -1) { 140 perror("pledge"); 141 exit(1); 142 } 143 } 144 145 args = argv + 1; 146 ret = 1; 147 148 while (!badarg && *args && *args[0] == '-') { 149 if (!strcmp(*args, "-encrypt")) 150 operation = SMIME_ENCRYPT; 151 else if (!strcmp(*args, "-decrypt")) 152 operation = SMIME_DECRYPT; 153 else if (!strcmp(*args, "-sign")) 154 operation = SMIME_SIGN; 155 else if (!strcmp(*args, "-sign_receipt")) 156 operation = SMIME_SIGN_RECEIPT; 157 else if (!strcmp(*args, "-resign")) 158 operation = SMIME_RESIGN; 159 else if (!strcmp(*args, "-verify")) 160 operation = SMIME_VERIFY; 161 else if (!strcmp(*args, "-verify_retcode")) 162 verify_retcode = 1; 163 else if (!strcmp(*args, "-verify_receipt")) { 164 operation = SMIME_VERIFY_RECEIPT; 165 if (!args[1]) 166 goto argerr; 167 args++; 168 rctfile = *args; 169 } else if (!strcmp(*args, "-cmsout")) 170 operation = SMIME_CMSOUT; 171 else if (!strcmp(*args, "-data_out")) 172 operation = SMIME_DATAOUT; 173 else if (!strcmp(*args, "-data_create")) 174 operation = SMIME_DATA_CREATE; 175 else if (!strcmp(*args, "-digest_verify")) 176 operation = SMIME_DIGEST_VERIFY; 177 else if (!strcmp(*args, "-digest_create")) 178 operation = SMIME_DIGEST_CREATE; 179 else if (!strcmp(*args, "-compress")) 180 operation = SMIME_COMPRESS; 181 else if (!strcmp(*args, "-uncompress")) 182 operation = SMIME_UNCOMPRESS; 183 else if (!strcmp(*args, "-EncryptedData_decrypt")) 184 operation = SMIME_ENCRYPTED_DECRYPT; 185 else if (!strcmp(*args, "-EncryptedData_encrypt")) 186 operation = SMIME_ENCRYPTED_ENCRYPT; 187 #ifndef OPENSSL_NO_DES 188 else if (!strcmp(*args, "-des3")) 189 cipher = EVP_des_ede3_cbc(); 190 else if (!strcmp(*args, "-des")) 191 cipher = EVP_des_cbc(); 192 #endif 193 #ifndef OPENSSL_NO_RC2 194 else if (!strcmp(*args, "-rc2-40")) 195 cipher = EVP_rc2_40_cbc(); 196 else if (!strcmp(*args, "-rc2-128")) 197 cipher = EVP_rc2_cbc(); 198 else if (!strcmp(*args, "-rc2-64")) 199 cipher = EVP_rc2_64_cbc(); 200 #endif 201 #ifndef OPENSSL_NO_AES 202 else if (!strcmp(*args, "-aes128")) 203 cipher = EVP_aes_128_cbc(); 204 else if (!strcmp(*args, "-aes192")) 205 cipher = EVP_aes_192_cbc(); 206 else if (!strcmp(*args, "-aes256")) 207 cipher = EVP_aes_256_cbc(); 208 #endif 209 #ifndef OPENSSL_NO_CAMELLIA 210 else if (!strcmp(*args, "-camellia128")) 211 cipher = EVP_camellia_128_cbc(); 212 else if (!strcmp(*args, "-camellia192")) 213 cipher = EVP_camellia_192_cbc(); 214 else if (!strcmp(*args, "-camellia256")) 215 cipher = EVP_camellia_256_cbc(); 216 #endif 217 else if (!strcmp(*args, "-debug_decrypt")) 218 flags |= CMS_DEBUG_DECRYPT; 219 else if (!strcmp(*args, "-text")) 220 flags |= CMS_TEXT; 221 else if (!strcmp(*args, "-nointern")) 222 flags |= CMS_NOINTERN; 223 else if (!strcmp(*args, "-noverify") || 224 !strcmp(*args, "-no_signer_cert_verify")) 225 flags |= CMS_NO_SIGNER_CERT_VERIFY; 226 else if (!strcmp(*args, "-nocerts")) 227 flags |= CMS_NOCERTS; 228 else if (!strcmp(*args, "-noattr")) 229 flags |= CMS_NOATTR; 230 else if (!strcmp(*args, "-nodetach")) 231 flags &= ~CMS_DETACHED; 232 else if (!strcmp(*args, "-nosmimecap")) 233 flags |= CMS_NOSMIMECAP; 234 else if (!strcmp(*args, "-binary")) 235 flags |= CMS_BINARY; 236 else if (!strcmp(*args, "-keyid")) 237 flags |= CMS_USE_KEYID; 238 else if (!strcmp(*args, "-nosigs")) 239 flags |= CMS_NOSIGS; 240 else if (!strcmp(*args, "-no_content_verify")) 241 flags |= CMS_NO_CONTENT_VERIFY; 242 else if (!strcmp(*args, "-no_attr_verify")) 243 flags |= CMS_NO_ATTR_VERIFY; 244 else if (!strcmp(*args, "-stream")) 245 flags |= CMS_STREAM; 246 else if (!strcmp(*args, "-indef")) 247 flags |= CMS_STREAM; 248 else if (!strcmp(*args, "-noindef")) 249 flags &= ~CMS_STREAM; 250 else if (!strcmp(*args, "-nooldmime")) 251 flags |= CMS_NOOLDMIMETYPE; 252 else if (!strcmp(*args, "-crlfeol")) 253 flags |= CMS_CRLFEOL; 254 else if (!strcmp(*args, "-noout")) 255 noout = 1; 256 else if (!strcmp(*args, "-receipt_request_print")) 257 rr_print = 1; 258 else if (!strcmp(*args, "-receipt_request_all")) 259 rr_allorfirst = 0; 260 else if (!strcmp(*args, "-receipt_request_first")) 261 rr_allorfirst = 1; 262 else if (!strcmp(*args, "-receipt_request_from")) { 263 if (!args[1]) 264 goto argerr; 265 args++; 266 if (!rr_from) 267 rr_from = sk_OPENSSL_STRING_new_null(); 268 sk_OPENSSL_STRING_push(rr_from, *args); 269 } else if (!strcmp(*args, "-receipt_request_to")) { 270 if (!args[1]) 271 goto argerr; 272 args++; 273 if (!rr_to) 274 rr_to = sk_OPENSSL_STRING_new_null(); 275 sk_OPENSSL_STRING_push(rr_to, *args); 276 } else if (!strcmp(*args, "-print")) { 277 noout = 1; 278 print = 1; 279 } else if (!strcmp(*args, "-secretkey")) { 280 long ltmp; 281 if (!args[1]) 282 goto argerr; 283 args++; 284 secret_key = string_to_hex(*args, <mp); 285 if (!secret_key) { 286 BIO_printf(bio_err, "Invalid key %s\n", *args); 287 goto argerr; 288 } 289 secret_keylen = (size_t) ltmp; 290 } else if (!strcmp(*args, "-secretkeyid")) { 291 long ltmp; 292 if (!args[1]) 293 goto argerr; 294 args++; 295 secret_keyid = string_to_hex(*args, <mp); 296 if (!secret_keyid) { 297 BIO_printf(bio_err, "Invalid id %s\n", *args); 298 goto argerr; 299 } 300 secret_keyidlen = (size_t) ltmp; 301 } else if (!strcmp(*args, "-pwri_password")) { 302 if (!args[1]) 303 goto argerr; 304 args++; 305 pwri_pass = (unsigned char *) *args; 306 } else if (!strcmp(*args, "-econtent_type")) { 307 if (!args[1]) 308 goto argerr; 309 args++; 310 econtent_type = OBJ_txt2obj(*args, 0); 311 if (!econtent_type) { 312 BIO_printf(bio_err, "Invalid OID %s\n", *args); 313 goto argerr; 314 } 315 } 316 else if (!strcmp(*args, "-passin")) { 317 if (!args[1]) 318 goto argerr; 319 passargin = *++args; 320 } else if (!strcmp(*args, "-to")) { 321 if (!args[1]) 322 goto argerr; 323 to = *++args; 324 } else if (!strcmp(*args, "-from")) { 325 if (!args[1]) 326 goto argerr; 327 from = *++args; 328 } else if (!strcmp(*args, "-subject")) { 329 if (!args[1]) 330 goto argerr; 331 subject = *++args; 332 } else if (!strcmp(*args, "-signer")) { 333 if (!args[1]) 334 goto argerr; 335 /* If previous -signer argument add signer to list */ 336 337 if (signerfile) { 338 if (!sksigners) 339 sksigners = 340 sk_OPENSSL_STRING_new_null(); 341 sk_OPENSSL_STRING_push(sksigners, signerfile); 342 if (!keyfile) 343 keyfile = signerfile; 344 if (!skkeys) 345 skkeys = sk_OPENSSL_STRING_new_null(); 346 sk_OPENSSL_STRING_push(skkeys, keyfile); 347 keyfile = NULL; 348 } 349 signerfile = *++args; 350 } else if (!strcmp(*args, "-recip")) { 351 if (!args[1]) 352 goto argerr; 353 recipfile = *++args; 354 } else if (!strcmp(*args, "-certsout")) { 355 if (!args[1]) 356 goto argerr; 357 certsoutfile = *++args; 358 } else if (!strcmp(*args, "-md")) { 359 if (!args[1]) 360 goto argerr; 361 sign_md = EVP_get_digestbyname(*++args); 362 if (sign_md == NULL) { 363 BIO_printf(bio_err, "Unknown digest %s\n", 364 *args); 365 goto argerr; 366 } 367 } else if (!strcmp(*args, "-inkey")) { 368 if (!args[1]) 369 goto argerr; 370 /* If previous -inkey arument add signer to list */ 371 if (keyfile) { 372 if (!signerfile) { 373 BIO_puts(bio_err, 374 "Illegal -inkey without -signer\n"); 375 goto argerr; 376 } 377 if (!sksigners) 378 sksigners = 379 sk_OPENSSL_STRING_new_null(); 380 sk_OPENSSL_STRING_push(sksigners, signerfile); 381 signerfile = NULL; 382 if (!skkeys) 383 skkeys = sk_OPENSSL_STRING_new_null(); 384 sk_OPENSSL_STRING_push(skkeys, keyfile); 385 } 386 keyfile = *++args; 387 } else if (!strcmp(*args, "-keyform")) { 388 if (!args[1]) 389 goto argerr; 390 keyform = str2fmt(*++args); 391 } else if (!strcmp(*args, "-rctform")) { 392 if (!args[1]) 393 goto argerr; 394 rctformat = str2fmt(*++args); 395 } else if (!strcmp(*args, "-certfile")) { 396 if (!args[1]) 397 goto argerr; 398 certfile = *++args; 399 } else if (!strcmp(*args, "-CAfile")) { 400 if (!args[1]) 401 goto argerr; 402 CAfile = *++args; 403 } else if (!strcmp(*args, "-CApath")) { 404 if (!args[1]) 405 goto argerr; 406 CApath = *++args; 407 } else if (!strcmp(*args, "-in")) { 408 if (!args[1]) 409 goto argerr; 410 infile = *++args; 411 } else if (!strcmp(*args, "-inform")) { 412 if (!args[1]) 413 goto argerr; 414 informat = str2fmt(*++args); 415 } else if (!strcmp(*args, "-outform")) { 416 if (!args[1]) 417 goto argerr; 418 outformat = str2fmt(*++args); 419 } else if (!strcmp(*args, "-out")) { 420 if (!args[1]) 421 goto argerr; 422 outfile = *++args; 423 } else if (!strcmp(*args, "-content")) { 424 if (!args[1]) 425 goto argerr; 426 contfile = *++args; 427 } else if (args_verify(&args, NULL, &badarg, bio_err, &vpm)) 428 continue; 429 else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL) 430 badarg = 1; 431 args++; 432 } 433 434 if (((rr_allorfirst != -1) || rr_from) && !rr_to) { 435 BIO_puts(bio_err, "No Signed Receipts Recipients\n"); 436 goto argerr; 437 } 438 if (!(operation & SMIME_SIGNERS) && (rr_to || rr_from)) { 439 BIO_puts(bio_err, "Signed receipts only allowed with -sign\n"); 440 goto argerr; 441 } 442 if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) { 443 BIO_puts(bio_err, "Multiple signers or keys not allowed\n"); 444 goto argerr; 445 } 446 if (operation & SMIME_SIGNERS) { 447 if (keyfile && !signerfile) { 448 BIO_puts(bio_err, "Illegal -inkey without -signer\n"); 449 goto argerr; 450 } 451 /* Check to see if any final signer needs to be appended */ 452 if (signerfile) { 453 if (!sksigners) 454 sksigners = sk_OPENSSL_STRING_new_null(); 455 sk_OPENSSL_STRING_push(sksigners, signerfile); 456 if (!skkeys) 457 skkeys = sk_OPENSSL_STRING_new_null(); 458 if (!keyfile) 459 keyfile = signerfile; 460 sk_OPENSSL_STRING_push(skkeys, keyfile); 461 } 462 if (!sksigners) { 463 BIO_printf(bio_err, 464 "No signer certificate specified\n"); 465 badarg = 1; 466 } 467 signerfile = NULL; 468 keyfile = NULL; 469 } else if (operation == SMIME_DECRYPT) { 470 if (!recipfile && !keyfile && !secret_key && !pwri_pass) { 471 BIO_printf(bio_err, 472 "No recipient certificate or key specified\n"); 473 badarg = 1; 474 } 475 } else if (operation == SMIME_ENCRYPT) { 476 if (!*args && !secret_key && !pwri_pass) { 477 BIO_printf(bio_err, 478 "No recipient(s) certificate(s) specified\n"); 479 badarg = 1; 480 } 481 } else if (!operation) 482 badarg = 1; 483 484 if (badarg) { 485 argerr: 486 BIO_printf(bio_err, "Usage cms [options] cert.pem ...\n"); 487 BIO_printf(bio_err, "where options are\n"); 488 BIO_printf(bio_err, "-encrypt encrypt message\n"); 489 BIO_printf(bio_err, "-decrypt decrypt encrypted message\n"); 490 BIO_printf(bio_err, "-sign sign message\n"); 491 BIO_printf(bio_err, "-verify verify signed message\n"); 492 BIO_printf(bio_err, "-cmsout output CMS structure\n"); 493 #ifndef OPENSSL_NO_DES 494 BIO_printf(bio_err, "-des3 encrypt with triple DES\n"); 495 BIO_printf(bio_err, "-des encrypt with DES\n"); 496 #endif 497 #ifndef OPENSSL_NO_RC2 498 BIO_printf(bio_err, "-rc2-40 encrypt with RC2-40 (default)\n"); 499 BIO_printf(bio_err, "-rc2-64 encrypt with RC2-64\n"); 500 BIO_printf(bio_err, "-rc2-128 encrypt with RC2-128\n"); 501 #endif 502 #ifndef OPENSSL_NO_AES 503 BIO_printf(bio_err, "-aes128, -aes192, -aes256\n"); 504 BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); 505 #endif 506 #ifndef OPENSSL_NO_CAMELLIA 507 BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n"); 508 BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); 509 #endif 510 BIO_printf(bio_err, "-nointern don't search certificates in message for signer\n"); 511 BIO_printf(bio_err, "-nosigs don't verify message signature\n"); 512 BIO_printf(bio_err, "-noverify don't verify signers certificate\n"); 513 BIO_printf(bio_err, "-nocerts don't include signers certificate when signing\n"); 514 BIO_printf(bio_err, "-nodetach use opaque signing\n"); 515 BIO_printf(bio_err, "-noattr don't include any signed attributes\n"); 516 BIO_printf(bio_err, "-binary don't translate message to text\n"); 517 BIO_printf(bio_err, "-certfile file other certificates file\n"); 518 BIO_printf(bio_err, "-certsout file certificate output file\n"); 519 BIO_printf(bio_err, "-signer file signer certificate file\n"); 520 BIO_printf(bio_err, "-recip file recipient certificate file for decryption\n"); 521 BIO_printf(bio_err, "-keyid use subject key identifier\n"); 522 BIO_printf(bio_err, "-in file input file\n"); 523 BIO_printf(bio_err, "-inform arg input format SMIME (default), PEM or DER\n"); 524 BIO_printf(bio_err, "-inkey file input private key (if not signer or recipient)\n"); 525 BIO_printf(bio_err, "-keyform arg input private key format (PEM)\n"); 526 BIO_printf(bio_err, "-out file output file\n"); 527 BIO_printf(bio_err, "-outform arg output format SMIME (default), PEM or DER\n"); 528 BIO_printf(bio_err, "-content file supply or override content for detached signature\n"); 529 BIO_printf(bio_err, "-to addr to address\n"); 530 BIO_printf(bio_err, "-from ad from address\n"); 531 BIO_printf(bio_err, "-subject s subject\n"); 532 BIO_printf(bio_err, "-text include or delete text MIME headers\n"); 533 BIO_printf(bio_err, "-CApath dir trusted certificates directory\n"); 534 BIO_printf(bio_err, "-CAfile file trusted certificates file\n"); 535 BIO_printf(bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n"); 536 BIO_printf(bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n"); 537 BIO_printf(bio_err, "-passin arg input file pass phrase source\n"); 538 BIO_printf(bio_err, "cert.pem recipient certificate(s) for encryption\n"); 539 goto end; 540 } 541 542 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 543 BIO_printf(bio_err, "Error getting password\n"); 544 goto end; 545 } 546 ret = 2; 547 548 if (!(operation & SMIME_SIGNERS)) 549 flags &= ~CMS_DETACHED; 550 551 if (operation & SMIME_OP) { 552 if (outformat == FORMAT_ASN1) 553 outmode = "wb"; 554 } else { 555 if (flags & CMS_BINARY) 556 outmode = "wb"; 557 } 558 559 if (operation & SMIME_IP) { 560 if (informat == FORMAT_ASN1) 561 inmode = "rb"; 562 } else { 563 if (flags & CMS_BINARY) 564 inmode = "rb"; 565 } 566 567 if (operation == SMIME_ENCRYPT) { 568 if (!cipher) { 569 #ifndef OPENSSL_NO_DES 570 cipher = EVP_des_ede3_cbc(); 571 #else 572 BIO_printf(bio_err, "No cipher selected\n"); 573 goto end; 574 #endif 575 } 576 if (secret_key && !secret_keyid) { 577 BIO_printf(bio_err, "No secret key id\n"); 578 goto end; 579 } 580 if (*args) 581 encerts = sk_X509_new_null(); 582 while (*args) { 583 if (!(cert = load_cert(bio_err, *args, FORMAT_PEM, 584 NULL, e, "recipient certificate file"))) 585 goto end; 586 sk_X509_push(encerts, cert); 587 cert = NULL; 588 args++; 589 } 590 } 591 if (certfile) { 592 if (!(other = load_certs(bio_err, certfile, FORMAT_PEM, NULL, 593 e, "certificate file"))) { 594 ERR_print_errors(bio_err); 595 goto end; 596 } 597 } 598 if (recipfile && (operation == SMIME_DECRYPT)) { 599 if (!(recip = load_cert(bio_err, recipfile, FORMAT_PEM, NULL, 600 e, "recipient certificate file"))) { 601 ERR_print_errors(bio_err); 602 goto end; 603 } 604 } 605 if (operation == SMIME_SIGN_RECEIPT) { 606 if (!(signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL, 607 e, "receipt signer certificate file"))) { 608 ERR_print_errors(bio_err); 609 goto end; 610 } 611 } 612 if (operation == SMIME_DECRYPT) { 613 if (!keyfile) 614 keyfile = recipfile; 615 } else if ((operation == SMIME_SIGN) || 616 (operation == SMIME_SIGN_RECEIPT)) { 617 if (!keyfile) 618 keyfile = signerfile; 619 } else 620 keyfile = NULL; 621 622 if (keyfile) { 623 key = load_key(bio_err, keyfile, keyform, 0, passin, e, 624 "signing key file"); 625 if (!key) 626 goto end; 627 } 628 if (infile) { 629 if (!(in = BIO_new_file(infile, inmode))) { 630 BIO_printf(bio_err, 631 "Can't open input file %s\n", infile); 632 goto end; 633 } 634 } else 635 in = BIO_new_fp(stdin, BIO_NOCLOSE); 636 637 if (operation & SMIME_IP) { 638 if (informat == FORMAT_SMIME) 639 cms = SMIME_read_CMS(in, &indata); 640 else if (informat == FORMAT_PEM) 641 cms = PEM_read_bio_CMS(in, NULL, NULL, NULL); 642 else if (informat == FORMAT_ASN1) 643 cms = d2i_CMS_bio(in, NULL); 644 else { 645 BIO_printf(bio_err, "Bad input format for CMS file\n"); 646 goto end; 647 } 648 649 if (!cms) { 650 BIO_printf(bio_err, "Error reading S/MIME message\n"); 651 goto end; 652 } 653 if (contfile) { 654 BIO_free(indata); 655 if (!(indata = BIO_new_file(contfile, "rb"))) { 656 BIO_printf(bio_err, 657 "Can't read content file %s\n", contfile); 658 goto end; 659 } 660 } 661 if (certsoutfile) { 662 STACK_OF(X509) * allcerts; 663 allcerts = CMS_get1_certs(cms); 664 if (!save_certs(certsoutfile, allcerts)) { 665 BIO_printf(bio_err, 666 "Error writing certs to %s\n", 667 certsoutfile); 668 ret = 5; 669 goto end; 670 } 671 sk_X509_pop_free(allcerts, X509_free); 672 } 673 } 674 if (rctfile) { 675 char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r"; 676 if (!(rctin = BIO_new_file(rctfile, rctmode))) { 677 BIO_printf(bio_err, 678 "Can't open receipt file %s\n", rctfile); 679 goto end; 680 } 681 if (rctformat == FORMAT_SMIME) 682 rcms = SMIME_read_CMS(rctin, NULL); 683 else if (rctformat == FORMAT_PEM) 684 rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL); 685 else if (rctformat == FORMAT_ASN1) 686 rcms = d2i_CMS_bio(rctin, NULL); 687 else { 688 BIO_printf(bio_err, "Bad input format for receipt\n"); 689 goto end; 690 } 691 692 if (!rcms) { 693 BIO_printf(bio_err, "Error reading receipt\n"); 694 goto end; 695 } 696 } 697 if (outfile) { 698 if (!(out = BIO_new_file(outfile, outmode))) { 699 BIO_printf(bio_err, 700 "Can't open output file %s\n", outfile); 701 goto end; 702 } 703 } else { 704 out = BIO_new_fp(stdout, BIO_NOCLOSE); 705 } 706 707 if ((operation == SMIME_VERIFY) || 708 (operation == SMIME_VERIFY_RECEIPT)) { 709 if (!(store = setup_verify(bio_err, CAfile, CApath))) 710 goto end; 711 X509_STORE_set_verify_cb(store, cms_cb); 712 if (vpm) 713 X509_STORE_set1_param(store, vpm); 714 } 715 ret = 3; 716 717 if (operation == SMIME_DATA_CREATE) { 718 cms = CMS_data_create(in, flags); 719 } else if (operation == SMIME_DIGEST_CREATE) { 720 cms = CMS_digest_create(in, sign_md, flags); 721 } else if (operation == SMIME_COMPRESS) { 722 cms = CMS_compress(in, -1, flags); 723 } else if (operation == SMIME_ENCRYPT) { 724 flags |= CMS_PARTIAL; 725 cms = CMS_encrypt(encerts, in, cipher, flags); 726 if (!cms) 727 goto end; 728 if (secret_key) { 729 if (!CMS_add0_recipient_key(cms, NID_undef, secret_key, 730 secret_keylen, secret_keyid, secret_keyidlen, 731 NULL, NULL, NULL)) 732 goto end; 733 /* NULL these because call absorbs them */ 734 secret_key = NULL; 735 secret_keyid = NULL; 736 } 737 if (pwri_pass) { 738 pwri_tmp = strdup(pwri_pass); 739 if (!pwri_tmp) 740 goto end; 741 if (!CMS_add0_recipient_password(cms, -1, NID_undef, 742 NID_undef, pwri_tmp, -1, NULL)) 743 goto end; 744 pwri_tmp = NULL; 745 } 746 if (!(flags & CMS_STREAM)) { 747 if (!CMS_final(cms, in, NULL, flags)) 748 goto end; 749 } 750 } else if (operation == SMIME_ENCRYPTED_ENCRYPT) { 751 cms = CMS_EncryptedData_encrypt(in, cipher, secret_key, 752 secret_keylen, flags); 753 754 } else if (operation == SMIME_SIGN_RECEIPT) { 755 CMS_ContentInfo *srcms = NULL; 756 STACK_OF(CMS_SignerInfo) * sis; 757 CMS_SignerInfo *si; 758 sis = CMS_get0_SignerInfos(cms); 759 if (!sis) 760 goto end; 761 si = sk_CMS_SignerInfo_value(sis, 0); 762 srcms = CMS_sign_receipt(si, signer, key, other, flags); 763 if (!srcms) 764 goto end; 765 CMS_ContentInfo_free(cms); 766 cms = srcms; 767 } else if (operation & SMIME_SIGNERS) { 768 int i; 769 /* 770 * If detached data content we enable streaming if S/MIME 771 * output format. 772 */ 773 if (operation == SMIME_SIGN) { 774 775 if (flags & CMS_DETACHED) { 776 if (outformat == FORMAT_SMIME) 777 flags |= CMS_STREAM; 778 } 779 flags |= CMS_PARTIAL; 780 cms = CMS_sign(NULL, NULL, other, in, flags); 781 if (!cms) 782 goto end; 783 if (econtent_type) 784 CMS_set1_eContentType(cms, econtent_type); 785 786 if (rr_to) { 787 rr = make_receipt_request(rr_to, rr_allorfirst, 788 rr_from); 789 if (!rr) { 790 BIO_puts(bio_err, 791 "Signed Receipt Request Creation Error\n"); 792 goto end; 793 } 794 } 795 } else 796 flags |= CMS_REUSE_DIGEST; 797 for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) { 798 CMS_SignerInfo *si; 799 signerfile = sk_OPENSSL_STRING_value(sksigners, i); 800 keyfile = sk_OPENSSL_STRING_value(skkeys, i); 801 signer = load_cert(bio_err, signerfile, FORMAT_PEM, 802 NULL, e, "signer certificate"); 803 if (!signer) 804 goto end; 805 key = load_key(bio_err, keyfile, keyform, 0, passin, e, 806 "signing key file"); 807 if (!key) 808 goto end; 809 si = CMS_add1_signer(cms, signer, key, sign_md, flags); 810 if (!si) 811 goto end; 812 if (rr && !CMS_add1_ReceiptRequest(si, rr)) 813 goto end; 814 X509_free(signer); 815 signer = NULL; 816 EVP_PKEY_free(key); 817 key = NULL; 818 } 819 /* If not streaming or resigning finalize structure */ 820 if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM)) { 821 if (!CMS_final(cms, in, NULL, flags)) 822 goto end; 823 } 824 } 825 if (!cms) { 826 BIO_printf(bio_err, "Error creating CMS structure\n"); 827 goto end; 828 } 829 ret = 4; 830 if (operation == SMIME_DECRYPT) { 831 if (flags & CMS_DEBUG_DECRYPT) 832 CMS_decrypt(cms, NULL, NULL, NULL, NULL, flags); 833 834 if (secret_key) { 835 if (!CMS_decrypt_set1_key(cms, secret_key, 836 secret_keylen, secret_keyid, secret_keyidlen)) { 837 BIO_puts(bio_err, 838 "Error decrypting CMS using secret key\n"); 839 goto end; 840 } 841 } 842 if (key) { 843 if (!CMS_decrypt_set1_pkey(cms, key, recip)) { 844 BIO_puts(bio_err, 845 "Error decrypting CMS using private key\n"); 846 goto end; 847 } 848 } 849 if (pwri_pass) { 850 if (!CMS_decrypt_set1_password(cms, pwri_pass, -1)) { 851 BIO_puts(bio_err, 852 "Error decrypting CMS using password\n"); 853 goto end; 854 } 855 } 856 if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags)) { 857 BIO_printf(bio_err, "Error decrypting CMS structure\n"); 858 goto end; 859 } 860 } else if (operation == SMIME_DATAOUT) { 861 if (!CMS_data(cms, out, flags)) 862 goto end; 863 } else if (operation == SMIME_UNCOMPRESS) { 864 if (!CMS_uncompress(cms, indata, out, flags)) 865 goto end; 866 } else if (operation == SMIME_DIGEST_VERIFY) { 867 if (CMS_digest_verify(cms, indata, out, flags) > 0) 868 BIO_printf(bio_err, "Verification successful\n"); 869 else { 870 BIO_printf(bio_err, "Verification failure\n"); 871 goto end; 872 } 873 } else if (operation == SMIME_ENCRYPTED_DECRYPT) { 874 if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen, 875 indata, out, flags)) 876 goto end; 877 } else if (operation == SMIME_VERIFY) { 878 if (CMS_verify(cms, other, store, indata, out, flags) > 0) 879 BIO_printf(bio_err, "Verification successful\n"); 880 else { 881 BIO_printf(bio_err, "Verification failure\n"); 882 if (verify_retcode) 883 ret = verify_err + 32; 884 goto end; 885 } 886 if (signerfile) { 887 STACK_OF(X509) * signers; 888 signers = CMS_get0_signers(cms); 889 if (!save_certs(signerfile, signers)) { 890 BIO_printf(bio_err, 891 "Error writing signers to %s\n", 892 signerfile); 893 ret = 5; 894 goto end; 895 } 896 sk_X509_free(signers); 897 } 898 if (rr_print) 899 receipt_request_print(bio_err, cms); 900 901 } else if (operation == SMIME_VERIFY_RECEIPT) { 902 if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0) 903 BIO_printf(bio_err, "Verification successful\n"); 904 else { 905 BIO_printf(bio_err, "Verification failure\n"); 906 goto end; 907 } 908 } else { 909 if (noout) { 910 if (print) 911 CMS_ContentInfo_print_ctx(out, cms, 0, NULL); 912 } else if (outformat == FORMAT_SMIME) { 913 if (to) 914 BIO_printf(out, "To: %s\n", to); 915 if (from) 916 BIO_printf(out, "From: %s\n", from); 917 if (subject) 918 BIO_printf(out, "Subject: %s\n", subject); 919 if (operation == SMIME_RESIGN) 920 ret = SMIME_write_CMS(out, cms, indata, flags); 921 else 922 ret = SMIME_write_CMS(out, cms, in, flags); 923 } else if (outformat == FORMAT_PEM) 924 ret = PEM_write_bio_CMS_stream(out, cms, in, flags); 925 else if (outformat == FORMAT_ASN1) 926 ret = i2d_CMS_bio_stream(out, cms, in, flags); 927 else { 928 BIO_printf(bio_err, "Bad output format for CMS file\n"); 929 goto end; 930 } 931 if (ret <= 0) { 932 ret = 6; 933 goto end; 934 } 935 } 936 ret = 0; 937 938 end: 939 if (ret) 940 ERR_print_errors(bio_err); 941 sk_X509_pop_free(encerts, X509_free); 942 sk_X509_pop_free(other, X509_free); 943 if (vpm) 944 X509_VERIFY_PARAM_free(vpm); 945 if (sksigners) 946 sk_OPENSSL_STRING_free(sksigners); 947 if (skkeys) 948 sk_OPENSSL_STRING_free(skkeys); 949 free(secret_key); 950 free(secret_keyid); 951 free(pwri_tmp); 952 if (econtent_type) 953 ASN1_OBJECT_free(econtent_type); 954 if (rr) 955 CMS_ReceiptRequest_free(rr); 956 if (rr_to) 957 sk_OPENSSL_STRING_free(rr_to); 958 if (rr_from) 959 sk_OPENSSL_STRING_free(rr_from); 960 X509_STORE_free(store); 961 X509_free(cert); 962 X509_free(recip); 963 X509_free(signer); 964 EVP_PKEY_free(key); 965 CMS_ContentInfo_free(cms); 966 CMS_ContentInfo_free(rcms); 967 BIO_free(rctin); 968 BIO_free(in); 969 BIO_free(indata); 970 BIO_free_all(out); 971 free(passin); 972 return (ret); 973 } 974 975 static int 976 save_certs(char *signerfile, STACK_OF(X509) * signers) 977 { 978 int i; 979 BIO *tmp; 980 981 if (!signerfile) 982 return 1; 983 tmp = BIO_new_file(signerfile, "w"); 984 if (!tmp) 985 return 0; 986 for (i = 0; i < sk_X509_num(signers); i++) 987 PEM_write_bio_X509(tmp, sk_X509_value(signers, i)); 988 BIO_free(tmp); 989 return 1; 990 } 991 992 /* Minimal callback just to output policy info (if any) */ 993 994 static int 995 cms_cb(int ok, X509_STORE_CTX * ctx) 996 { 997 int error; 998 999 error = X509_STORE_CTX_get_error(ctx); 1000 1001 verify_err = error; 1002 1003 if ((error != X509_V_ERR_NO_EXPLICIT_POLICY) && 1004 ((error != X509_V_OK) || (ok != 2))) 1005 return ok; 1006 1007 policies_print(NULL, ctx); 1008 1009 return ok; 1010 } 1011 1012 static void 1013 gnames_stack_print(BIO * out, STACK_OF(GENERAL_NAMES) * gns) 1014 { 1015 STACK_OF(GENERAL_NAME) * gens; 1016 GENERAL_NAME *gen; 1017 int i, j; 1018 1019 for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++) { 1020 gens = sk_GENERAL_NAMES_value(gns, i); 1021 for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) { 1022 gen = sk_GENERAL_NAME_value(gens, j); 1023 BIO_puts(out, " "); 1024 GENERAL_NAME_print(out, gen); 1025 BIO_puts(out, "\n"); 1026 } 1027 } 1028 return; 1029 } 1030 1031 static void 1032 receipt_request_print(BIO * out, CMS_ContentInfo * cms) 1033 { 1034 STACK_OF(CMS_SignerInfo) * sis; 1035 CMS_SignerInfo *si; 1036 CMS_ReceiptRequest *rr; 1037 int allorfirst; 1038 STACK_OF(GENERAL_NAMES) * rto, *rlist; 1039 ASN1_STRING *scid; 1040 int i, rv; 1041 1042 sis = CMS_get0_SignerInfos(cms); 1043 for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++) { 1044 si = sk_CMS_SignerInfo_value(sis, i); 1045 rv = CMS_get1_ReceiptRequest(si, &rr); 1046 BIO_printf(bio_err, "Signer %d:\n", i + 1); 1047 if (rv == 0) 1048 BIO_puts(bio_err, " No Receipt Request\n"); 1049 else if (rv < 0) { 1050 BIO_puts(bio_err, " Receipt Request Parse Error\n"); 1051 ERR_print_errors(bio_err); 1052 } else { 1053 char *id; 1054 int idlen; 1055 CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst, 1056 &rlist, &rto); 1057 BIO_puts(out, " Signed Content ID:\n"); 1058 idlen = ASN1_STRING_length(scid); 1059 id = (char *) ASN1_STRING_data(scid); 1060 BIO_dump_indent(out, id, idlen, 4); 1061 BIO_puts(out, " Receipts From"); 1062 if (rlist) { 1063 BIO_puts(out, " List:\n"); 1064 gnames_stack_print(out, rlist); 1065 } else if (allorfirst == 1) 1066 BIO_puts(out, ": First Tier\n"); 1067 else if (allorfirst == 0) 1068 BIO_puts(out, ": All\n"); 1069 else 1070 BIO_printf(out, " Unknown (%d)\n", allorfirst); 1071 BIO_puts(out, " Receipts To:\n"); 1072 gnames_stack_print(out, rto); 1073 } 1074 if (rr) 1075 CMS_ReceiptRequest_free(rr); 1076 } 1077 } 1078 1079 static STACK_OF(GENERAL_NAMES) * 1080 make_names_stack(STACK_OF(OPENSSL_STRING) * ns) 1081 { 1082 int i; 1083 STACK_OF(GENERAL_NAMES) * ret; 1084 GENERAL_NAMES *gens = NULL; 1085 GENERAL_NAME *gen = NULL; 1086 ret = sk_GENERAL_NAMES_new_null(); 1087 if (!ret) 1088 goto err; 1089 for (i = 0; i < sk_OPENSSL_STRING_num(ns); i++) { 1090 char *str = sk_OPENSSL_STRING_value(ns, i); 1091 gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0); 1092 if (!gen) 1093 goto err; 1094 gens = GENERAL_NAMES_new(); 1095 if (!gens) 1096 goto err; 1097 if (!sk_GENERAL_NAME_push(gens, gen)) 1098 goto err; 1099 gen = NULL; 1100 if (!sk_GENERAL_NAMES_push(ret, gens)) 1101 goto err; 1102 gens = NULL; 1103 } 1104 1105 return ret; 1106 1107 err: 1108 if (ret) 1109 sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free); 1110 if (gens) 1111 GENERAL_NAMES_free(gens); 1112 if (gen) 1113 GENERAL_NAME_free(gen); 1114 return NULL; 1115 } 1116 1117 1118 static CMS_ReceiptRequest * 1119 make_receipt_request(STACK_OF(OPENSSL_STRING) * rr_to, int rr_allorfirst, 1120 STACK_OF(OPENSSL_STRING) * rr_from) 1121 { 1122 STACK_OF(GENERAL_NAMES) * rct_to, *rct_from; 1123 CMS_ReceiptRequest *rr; 1124 1125 rct_to = make_names_stack(rr_to); 1126 if (!rct_to) 1127 goto err; 1128 if (rr_from) { 1129 rct_from = make_names_stack(rr_from); 1130 if (!rct_from) 1131 goto err; 1132 } else 1133 rct_from = NULL; 1134 rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from, 1135 rct_to); 1136 return rr; 1137 1138 err: 1139 return NULL; 1140 } 1141 1142 #endif 1143