1 /* apps/dgst.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <stdio.h> 60 #include <string.h> 61 #include <stdlib.h> 62 #include "apps.h" 63 #include <openssl/bio.h> 64 #include <openssl/err.h> 65 #include <openssl/evp.h> 66 #include <openssl/objects.h> 67 #include <openssl/x509.h> 68 #include <openssl/pem.h> 69 #include <openssl/hmac.h> 70 71 #undef BUFSIZE 72 #define BUFSIZE 1024*8 73 74 #undef PROG 75 #define PROG dgst_main 76 77 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 78 EVP_PKEY *key, unsigned char *sigin, int siglen, 79 const char *sig_name, const char *md_name, 80 const char *file,BIO *bmd); 81 82 static void list_md_fn(const EVP_MD *m, 83 const char *from, const char *to, void *arg) 84 { 85 const char *mname; 86 /* Skip aliases */ 87 if (!m) 88 return; 89 mname = OBJ_nid2ln(EVP_MD_type(m)); 90 /* Skip shortnames */ 91 if (strcmp(from, mname)) 92 return; 93 /* Skip clones */ 94 if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST) 95 return; 96 if (strchr(mname, ' ')) 97 mname= EVP_MD_name(m); 98 BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n", 99 mname, mname); 100 } 101 102 int MAIN(int, char **); 103 104 int MAIN(int argc, char **argv) 105 { 106 ENGINE *e = NULL; 107 unsigned char *buf=NULL; 108 int i,err=1; 109 const EVP_MD *md=NULL,*m; 110 BIO *in=NULL,*inp; 111 BIO *bmd=NULL; 112 BIO *out = NULL; 113 #define PROG_NAME_SIZE 39 114 char pname[PROG_NAME_SIZE+1]; 115 int separator=0; 116 int debug=0; 117 int keyform=FORMAT_PEM; 118 const char *outfile = NULL, *keyfile = NULL; 119 const char *sigfile = NULL, *randfile = NULL; 120 int out_bin = -1, want_pub = 0, do_verify = 0; 121 EVP_PKEY *sigkey = NULL; 122 unsigned char *sigbuf = NULL; 123 int siglen = 0; 124 char *passargin = NULL, *passin = NULL; 125 #ifndef OPENSSL_NO_ENGINE 126 char *engine=NULL; 127 #endif 128 char *hmac_key=NULL; 129 char *mac_name=NULL; 130 STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL; 131 132 apps_startup(); 133 134 if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) 135 { 136 BIO_printf(bio_err,"out of memory\n"); 137 goto end; 138 } 139 if (bio_err == NULL) 140 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 141 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 142 143 if (!load_config(bio_err, NULL)) 144 goto end; 145 146 /* first check the program name */ 147 program_name(argv[0],pname,sizeof pname); 148 149 md=EVP_get_digestbyname(pname); 150 151 argc--; 152 argv++; 153 while (argc > 0) 154 { 155 if ((*argv)[0] != '-') break; 156 if (strcmp(*argv,"-c") == 0) 157 separator=1; 158 else if (strcmp(*argv,"-r") == 0) 159 separator=2; 160 else if (strcmp(*argv,"-rand") == 0) 161 { 162 if (--argc < 1) break; 163 randfile=*(++argv); 164 } 165 else if (strcmp(*argv,"-out") == 0) 166 { 167 if (--argc < 1) break; 168 outfile=*(++argv); 169 } 170 else if (strcmp(*argv,"-sign") == 0) 171 { 172 if (--argc < 1) break; 173 keyfile=*(++argv); 174 } 175 else if (!strcmp(*argv,"-passin")) 176 { 177 if (--argc < 1) 178 break; 179 passargin=*++argv; 180 } 181 else if (strcmp(*argv,"-verify") == 0) 182 { 183 if (--argc < 1) break; 184 keyfile=*(++argv); 185 want_pub = 1; 186 do_verify = 1; 187 } 188 else if (strcmp(*argv,"-prverify") == 0) 189 { 190 if (--argc < 1) break; 191 keyfile=*(++argv); 192 do_verify = 1; 193 } 194 else if (strcmp(*argv,"-signature") == 0) 195 { 196 if (--argc < 1) break; 197 sigfile=*(++argv); 198 } 199 else if (strcmp(*argv,"-keyform") == 0) 200 { 201 if (--argc < 1) break; 202 keyform=str2fmt(*(++argv)); 203 } 204 #ifndef OPENSSL_NO_ENGINE 205 else if (strcmp(*argv,"-engine") == 0) 206 { 207 if (--argc < 1) break; 208 engine= *(++argv); 209 e = setup_engine(bio_err, engine, 0); 210 } 211 #endif 212 else if (strcmp(*argv,"-hex") == 0) 213 out_bin = 0; 214 else if (strcmp(*argv,"-binary") == 0) 215 out_bin = 1; 216 else if (strcmp(*argv,"-d") == 0) 217 debug=1; 218 else if (!strcmp(*argv,"-hmac")) 219 { 220 if (--argc < 1) 221 break; 222 hmac_key=*++argv; 223 } 224 else if (!strcmp(*argv,"-mac")) 225 { 226 if (--argc < 1) 227 break; 228 mac_name=*++argv; 229 } 230 else if (strcmp(*argv,"-sigopt") == 0) 231 { 232 if (--argc < 1) 233 break; 234 if (!sigopts) 235 sigopts = sk_OPENSSL_STRING_new_null(); 236 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv))) 237 break; 238 } 239 else if (strcmp(*argv,"-macopt") == 0) 240 { 241 if (--argc < 1) 242 break; 243 if (!macopts) 244 macopts = sk_OPENSSL_STRING_new_null(); 245 if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv))) 246 break; 247 } 248 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL) 249 md=m; 250 else 251 break; 252 argc--; 253 argv++; 254 } 255 256 257 if(do_verify && !sigfile) { 258 BIO_printf(bio_err, "No signature to verify: use the -signature option\n"); 259 goto end; 260 } 261 262 if ((argc > 0) && (argv[0][0] == '-')) /* bad option */ 263 { 264 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 265 BIO_printf(bio_err,"options are\n"); 266 BIO_printf(bio_err,"-c to output the digest with separating colons\n"); 267 BIO_printf(bio_err,"-r to output the digest in coreutils format\n"); 268 BIO_printf(bio_err,"-d to output debug info\n"); 269 BIO_printf(bio_err,"-hex output as hex dump\n"); 270 BIO_printf(bio_err,"-binary output in binary form\n"); 271 BIO_printf(bio_err,"-sign file sign digest using private key in file\n"); 272 BIO_printf(bio_err,"-verify file verify a signature using public key in file\n"); 273 BIO_printf(bio_err,"-prverify file verify a signature using private key in file\n"); 274 BIO_printf(bio_err,"-keyform arg key file format (PEM or ENGINE)\n"); 275 BIO_printf(bio_err,"-out filename output to filename rather than stdout\n"); 276 BIO_printf(bio_err,"-signature file signature to verify\n"); 277 BIO_printf(bio_err,"-sigopt nm:v signature parameter\n"); 278 BIO_printf(bio_err,"-hmac key create hashed MAC with key\n"); 279 BIO_printf(bio_err,"-mac algorithm create MAC (not neccessarily HMAC)\n"); 280 BIO_printf(bio_err,"-macopt nm:v MAC algorithm parameters or key\n"); 281 #ifndef OPENSSL_NO_ENGINE 282 BIO_printf(bio_err,"-engine e use engine e, possibly a hardware device.\n"); 283 #endif 284 285 EVP_MD_do_all_sorted(list_md_fn, bio_err); 286 goto end; 287 } 288 289 in=BIO_new(BIO_s_file()); 290 bmd=BIO_new(BIO_f_md()); 291 if (debug) 292 { 293 BIO_set_callback(in,BIO_debug_callback); 294 /* needed for windows 3.1 */ 295 BIO_set_callback_arg(in,(char *)bio_err); 296 } 297 298 if(!app_passwd(bio_err, passargin, NULL, &passin, NULL)) 299 { 300 BIO_printf(bio_err, "Error getting password\n"); 301 goto end; 302 } 303 304 if ((in == NULL) || (bmd == NULL)) 305 { 306 ERR_print_errors(bio_err); 307 goto end; 308 } 309 310 if(out_bin == -1) { 311 if(keyfile) 312 out_bin = 1; 313 else 314 out_bin = 0; 315 } 316 317 if(randfile) 318 app_RAND_load_file(randfile, bio_err, 0); 319 320 if(outfile) { 321 if(out_bin) 322 out = BIO_new_file(outfile, "wb"); 323 else out = BIO_new_file(outfile, "w"); 324 } else { 325 out = BIO_new_fp(stdout, BIO_NOCLOSE); 326 #ifdef OPENSSL_SYS_VMS 327 { 328 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 329 out = BIO_push(tmpbio, out); 330 } 331 #endif 332 } 333 334 if(!out) { 335 BIO_printf(bio_err, "Error opening output file %s\n", 336 outfile ? outfile : "(stdout)"); 337 ERR_print_errors(bio_err); 338 goto end; 339 } 340 if ((!!mac_name + !!keyfile + !!hmac_key) > 1) 341 { 342 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n"); 343 goto end; 344 } 345 346 if(keyfile) 347 { 348 if (want_pub) 349 sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL, 350 e, "key file"); 351 else 352 sigkey = load_key(bio_err, keyfile, keyform, 0, passin, 353 e, "key file"); 354 if (!sigkey) 355 { 356 /* load_[pub]key() has already printed an appropriate 357 message */ 358 goto end; 359 } 360 } 361 362 if (mac_name) 363 { 364 EVP_PKEY_CTX *mac_ctx = NULL; 365 int r = 0; 366 if (!init_gen_str(bio_err, &mac_ctx, mac_name,e, 0)) 367 goto mac_end; 368 if (macopts) 369 { 370 char *macopt; 371 for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) 372 { 373 macopt = sk_OPENSSL_STRING_value(macopts, i); 374 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) 375 { 376 BIO_printf(bio_err, 377 "MAC parameter error \"%s\"\n", 378 macopt); 379 ERR_print_errors(bio_err); 380 goto mac_end; 381 } 382 } 383 } 384 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) 385 { 386 BIO_puts(bio_err, "Error generating key\n"); 387 ERR_print_errors(bio_err); 388 goto mac_end; 389 } 390 r = 1; 391 mac_end: 392 if (mac_ctx) 393 EVP_PKEY_CTX_free(mac_ctx); 394 if (r == 0) 395 goto end; 396 } 397 398 if (hmac_key) 399 { 400 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e, 401 (unsigned char *)hmac_key, -1); 402 if (!sigkey) 403 goto end; 404 } 405 406 if (sigkey) 407 { 408 EVP_MD_CTX *mctx = NULL; 409 EVP_PKEY_CTX *pctx = NULL; 410 int r; 411 if (!BIO_get_md_ctx(bmd, &mctx)) 412 { 413 BIO_printf(bio_err, "Error getting context\n"); 414 ERR_print_errors(bio_err); 415 goto end; 416 } 417 if (do_verify) 418 r = EVP_DigestVerifyInit(mctx, &pctx, md, e, sigkey); 419 else 420 r = EVP_DigestSignInit(mctx, &pctx, md, e, sigkey); 421 if (!r) 422 { 423 BIO_printf(bio_err, "Error setting context\n"); 424 ERR_print_errors(bio_err); 425 goto end; 426 } 427 if (sigopts) 428 { 429 char *sigopt; 430 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) 431 { 432 sigopt = sk_OPENSSL_STRING_value(sigopts, i); 433 if (pkey_ctrl_string(pctx, sigopt) <= 0) 434 { 435 BIO_printf(bio_err, 436 "parameter error \"%s\"\n", 437 sigopt); 438 ERR_print_errors(bio_err); 439 goto end; 440 } 441 } 442 } 443 } 444 /* we use md as a filter, reading from 'in' */ 445 else 446 { 447 if (md == NULL) 448 md = EVP_md5(); 449 if (!BIO_set_md(bmd,md)) 450 { 451 BIO_printf(bio_err, "Error setting digest %s\n", pname); 452 ERR_print_errors(bio_err); 453 goto end; 454 } 455 } 456 457 if(sigfile && sigkey) { 458 BIO *sigbio; 459 sigbio = BIO_new_file(sigfile, "rb"); 460 siglen = EVP_PKEY_size(sigkey); 461 sigbuf = OPENSSL_malloc(siglen); 462 if(!sigbio) { 463 BIO_printf(bio_err, "Error opening signature file %s\n", 464 sigfile); 465 ERR_print_errors(bio_err); 466 goto end; 467 } 468 siglen = BIO_read(sigbio, sigbuf, siglen); 469 BIO_free(sigbio); 470 if(siglen <= 0) { 471 BIO_printf(bio_err, "Error reading signature file %s\n", 472 sigfile); 473 ERR_print_errors(bio_err); 474 goto end; 475 } 476 } 477 inp=BIO_push(bmd,in); 478 479 if (md == NULL) 480 { 481 EVP_MD_CTX *tctx; 482 BIO_get_md_ctx(bmd, &tctx); 483 md = EVP_MD_CTX_md(tctx); 484 } 485 486 if (argc == 0) 487 { 488 BIO_set_fp(in,stdin,BIO_NOCLOSE); 489 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf, 490 siglen,NULL,NULL,"stdin",bmd); 491 } 492 else 493 { 494 const char *md_name = NULL, *sig_name = NULL; 495 if(!out_bin) 496 { 497 if (sigkey) 498 { 499 const EVP_PKEY_ASN1_METHOD *ameth; 500 ameth = EVP_PKEY_get0_asn1(sigkey); 501 if (ameth) 502 EVP_PKEY_asn1_get0_info(NULL, NULL, 503 NULL, NULL, &sig_name, ameth); 504 } 505 md_name = EVP_MD_name(md); 506 } 507 err = 0; 508 for (i=0; i<argc; i++) 509 { 510 int r; 511 if (BIO_read_filename(in,argv[i]) <= 0) 512 { 513 perror(argv[i]); 514 err++; 515 continue; 516 } 517 else 518 r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf, 519 siglen,sig_name,md_name, argv[i],bmd); 520 if(r) 521 err=r; 522 (void)BIO_reset(bmd); 523 } 524 } 525 end: 526 if (buf != NULL) 527 { 528 OPENSSL_cleanse(buf,BUFSIZE); 529 OPENSSL_free(buf); 530 } 531 if (in != NULL) BIO_free(in); 532 if (passin) 533 OPENSSL_free(passin); 534 BIO_free_all(out); 535 EVP_PKEY_free(sigkey); 536 if (sigopts) 537 sk_OPENSSL_STRING_free(sigopts); 538 if (macopts) 539 sk_OPENSSL_STRING_free(macopts); 540 if(sigbuf) OPENSSL_free(sigbuf); 541 if (bmd != NULL) BIO_free(bmd); 542 apps_shutdown(); 543 OPENSSL_EXIT(err); 544 } 545 546 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 547 EVP_PKEY *key, unsigned char *sigin, int siglen, 548 const char *sig_name, const char *md_name, 549 const char *file,BIO *bmd) 550 { 551 size_t len; 552 int i; 553 554 for (;;) 555 { 556 i=BIO_read(bp,(char *)buf,BUFSIZE); 557 if(i < 0) 558 { 559 BIO_printf(bio_err, "Read Error in %s\n",file); 560 ERR_print_errors(bio_err); 561 return 1; 562 } 563 if (i == 0) break; 564 } 565 if(sigin) 566 { 567 EVP_MD_CTX *ctx; 568 BIO_get_md_ctx(bp, &ctx); 569 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen); 570 if(i > 0) 571 BIO_printf(out, "Verified OK\n"); 572 else if(i == 0) 573 { 574 BIO_printf(out, "Verification Failure\n"); 575 return 1; 576 } 577 else 578 { 579 BIO_printf(bio_err, "Error Verifying Data\n"); 580 ERR_print_errors(bio_err); 581 return 1; 582 } 583 return 0; 584 } 585 if(key) 586 { 587 EVP_MD_CTX *ctx; 588 BIO_get_md_ctx(bp, &ctx); 589 len = BUFSIZE; 590 if(!EVP_DigestSignFinal(ctx, buf, &len)) 591 { 592 BIO_printf(bio_err, "Error Signing Data\n"); 593 ERR_print_errors(bio_err); 594 return 1; 595 } 596 } 597 else 598 { 599 len=BIO_gets(bp,(char *)buf,BUFSIZE); 600 if ((int)len <0) 601 { 602 ERR_print_errors(bio_err); 603 return 1; 604 } 605 } 606 607 if(binout) BIO_write(out, buf, len); 608 else if (sep == 2) 609 { 610 for (i=0; i<(int)len; i++) 611 BIO_printf(out, "%02x",buf[i]); 612 BIO_printf(out, " *%s\n", file); 613 } 614 else 615 { 616 if (sig_name) 617 BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file); 618 else if (md_name) 619 BIO_printf(out, "%s(%s)= ", md_name, file); 620 else 621 BIO_printf(out, "(%s)= ", file); 622 for (i=0; i<(int)len; i++) 623 { 624 if (sep && (i != 0)) 625 BIO_printf(out, ":"); 626 BIO_printf(out, "%02x",buf[i]); 627 } 628 BIO_printf(out, "\n"); 629 } 630 return 0; 631 } 632 633