dgst.c revision 296341
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 77int 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 82static 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 102int MAIN(int, char **); 103 104int 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 int non_fips_allow = 0; 131 STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL; 132 133 apps_startup(); 134 135 if ((buf = (unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) { 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 if ((*argv)[0] != '-') 155 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 if (--argc < 1) 162 break; 163 randfile = *(++argv); 164 } else if (strcmp(*argv, "-out") == 0) { 165 if (--argc < 1) 166 break; 167 outfile = *(++argv); 168 } else if (strcmp(*argv, "-sign") == 0) { 169 if (--argc < 1) 170 break; 171 keyfile = *(++argv); 172 } else if (!strcmp(*argv, "-passin")) { 173 if (--argc < 1) 174 break; 175 passargin = *++argv; 176 } else if (strcmp(*argv, "-verify") == 0) { 177 if (--argc < 1) 178 break; 179 keyfile = *(++argv); 180 want_pub = 1; 181 do_verify = 1; 182 } else if (strcmp(*argv, "-prverify") == 0) { 183 if (--argc < 1) 184 break; 185 keyfile = *(++argv); 186 do_verify = 1; 187 } else if (strcmp(*argv, "-signature") == 0) { 188 if (--argc < 1) 189 break; 190 sigfile = *(++argv); 191 } else if (strcmp(*argv, "-keyform") == 0) { 192 if (--argc < 1) 193 break; 194 keyform = str2fmt(*(++argv)); 195 } 196#ifndef OPENSSL_NO_ENGINE 197 else if (strcmp(*argv, "-engine") == 0) { 198 if (--argc < 1) 199 break; 200 engine = *(++argv); 201 e = setup_engine(bio_err, engine, 0); 202 } 203#endif 204 else if (strcmp(*argv, "-hex") == 0) 205 out_bin = 0; 206 else if (strcmp(*argv, "-binary") == 0) 207 out_bin = 1; 208 else if (strcmp(*argv, "-d") == 0) 209 debug = 1; 210 else if (!strcmp(*argv, "-fips-fingerprint")) 211 hmac_key = "etaonrishdlcupfm"; 212 else if (strcmp(*argv, "-non-fips-allow") == 0) 213 non_fips_allow = 1; 214 else if (!strcmp(*argv, "-hmac")) { 215 if (--argc < 1) 216 break; 217 hmac_key = *++argv; 218 } else if (!strcmp(*argv, "-mac")) { 219 if (--argc < 1) 220 break; 221 mac_name = *++argv; 222 } else if (strcmp(*argv, "-sigopt") == 0) { 223 if (--argc < 1) 224 break; 225 if (!sigopts) 226 sigopts = sk_OPENSSL_STRING_new_null(); 227 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv))) 228 break; 229 } else if (strcmp(*argv, "-macopt") == 0) { 230 if (--argc < 1) 231 break; 232 if (!macopts) 233 macopts = sk_OPENSSL_STRING_new_null(); 234 if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv))) 235 break; 236 } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL) 237 md = m; 238 else 239 break; 240 argc--; 241 argv++; 242 } 243 244 if (do_verify && !sigfile) { 245 BIO_printf(bio_err, 246 "No signature to verify: use the -signature option\n"); 247 goto end; 248 } 249 250 if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */ 251 BIO_printf(bio_err, "unknown option '%s'\n", *argv); 252 BIO_printf(bio_err, "options are\n"); 253 BIO_printf(bio_err, 254 "-c to output the digest with separating colons\n"); 255 BIO_printf(bio_err, 256 "-r to output the digest in coreutils format\n"); 257 BIO_printf(bio_err, "-d to output debug info\n"); 258 BIO_printf(bio_err, "-hex output as hex dump\n"); 259 BIO_printf(bio_err, "-binary output in binary form\n"); 260 BIO_printf(bio_err, "-hmac arg set the HMAC key to arg\n"); 261 BIO_printf(bio_err, "-non-fips-allow allow use of non FIPS digest\n"); 262 BIO_printf(bio_err, 263 "-sign file sign digest using private key in file\n"); 264 BIO_printf(bio_err, 265 "-verify file verify a signature using public key in file\n"); 266 BIO_printf(bio_err, 267 "-prverify file verify a signature using private key in file\n"); 268 BIO_printf(bio_err, 269 "-keyform arg key file format (PEM or ENGINE)\n"); 270 BIO_printf(bio_err, 271 "-out filename output to filename rather than stdout\n"); 272 BIO_printf(bio_err, "-signature file signature to verify\n"); 273 BIO_printf(bio_err, "-sigopt nm:v signature parameter\n"); 274 BIO_printf(bio_err, "-hmac key create hashed MAC with key\n"); 275 BIO_printf(bio_err, 276 "-mac algorithm create MAC (not neccessarily HMAC)\n"); 277 BIO_printf(bio_err, 278 "-macopt nm:v MAC algorithm parameters or key\n"); 279#ifndef OPENSSL_NO_ENGINE 280 BIO_printf(bio_err, 281 "-engine e use engine e, possibly a hardware device.\n"); 282#endif 283 284 EVP_MD_do_all_sorted(list_md_fn, bio_err); 285 goto end; 286 } 287 288 in = BIO_new(BIO_s_file()); 289 bmd = BIO_new(BIO_f_md()); 290 if ((in == NULL) || (bmd == NULL)) { 291 ERR_print_errors(bio_err); 292 goto end; 293 } 294 295 if (debug) { 296 BIO_set_callback(in, BIO_debug_callback); 297 /* needed for windows 3.1 */ 298 BIO_set_callback_arg(in, (char *)bio_err); 299 } 300 301 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 302 BIO_printf(bio_err, "Error getting password\n"); 303 goto end; 304 } 305 306 if (out_bin == -1) { 307 if (keyfile) 308 out_bin = 1; 309 else 310 out_bin = 0; 311 } 312 313 if (randfile) 314 app_RAND_load_file(randfile, bio_err, 0); 315 316 if (outfile) { 317 if (out_bin) 318 out = BIO_new_file(outfile, "wb"); 319 else 320 out = BIO_new_file(outfile, "w"); 321 } else { 322 out = BIO_new_fp(stdout, BIO_NOCLOSE); 323#ifdef OPENSSL_SYS_VMS 324 { 325 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 326 out = BIO_push(tmpbio, out); 327 } 328#endif 329 } 330 331 if (!out) { 332 BIO_printf(bio_err, "Error opening output file %s\n", 333 outfile ? outfile : "(stdout)"); 334 ERR_print_errors(bio_err); 335 goto end; 336 } 337 if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) { 338 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n"); 339 goto end; 340 } 341 342 if (keyfile) { 343 if (want_pub) 344 sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL, 345 e, "key file"); 346 else 347 sigkey = load_key(bio_err, keyfile, keyform, 0, passin, 348 e, "key file"); 349 if (!sigkey) { 350 /* 351 * load_[pub]key() has already printed an appropriate message 352 */ 353 goto end; 354 } 355 } 356 357 if (mac_name) { 358 EVP_PKEY_CTX *mac_ctx = NULL; 359 int r = 0; 360 if (!init_gen_str(bio_err, &mac_ctx, mac_name, e, 0)) 361 goto mac_end; 362 if (macopts) { 363 char *macopt; 364 for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) { 365 macopt = sk_OPENSSL_STRING_value(macopts, i); 366 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) { 367 BIO_printf(bio_err, 368 "MAC parameter error \"%s\"\n", macopt); 369 ERR_print_errors(bio_err); 370 goto mac_end; 371 } 372 } 373 } 374 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) { 375 BIO_puts(bio_err, "Error generating key\n"); 376 ERR_print_errors(bio_err); 377 goto mac_end; 378 } 379 r = 1; 380 mac_end: 381 if (mac_ctx) 382 EVP_PKEY_CTX_free(mac_ctx); 383 if (r == 0) 384 goto end; 385 } 386 387 if (non_fips_allow) { 388 EVP_MD_CTX *md_ctx; 389 BIO_get_md_ctx(bmd, &md_ctx); 390 EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); 391 } 392 393 if (hmac_key) { 394 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e, 395 (unsigned char *)hmac_key, -1); 396 if (!sigkey) 397 goto end; 398 } 399 400 if (sigkey) { 401 EVP_MD_CTX *mctx = NULL; 402 EVP_PKEY_CTX *pctx = NULL; 403 int r; 404 if (!BIO_get_md_ctx(bmd, &mctx)) { 405 BIO_printf(bio_err, "Error getting context\n"); 406 ERR_print_errors(bio_err); 407 goto end; 408 } 409 if (do_verify) 410 r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey); 411 else 412 r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey); 413 if (!r) { 414 BIO_printf(bio_err, "Error setting context\n"); 415 ERR_print_errors(bio_err); 416 goto end; 417 } 418 if (sigopts) { 419 char *sigopt; 420 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) { 421 sigopt = sk_OPENSSL_STRING_value(sigopts, i); 422 if (pkey_ctrl_string(pctx, sigopt) <= 0) { 423 BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt); 424 ERR_print_errors(bio_err); 425 goto end; 426 } 427 } 428 } 429 } 430 /* we use md as a filter, reading from 'in' */ 431 else { 432 if (md == NULL) 433 md = EVP_md5(); 434 if (!BIO_set_md(bmd, md)) { 435 BIO_printf(bio_err, "Error setting digest %s\n", pname); 436 ERR_print_errors(bio_err); 437 goto end; 438 } 439 } 440 441 if (sigfile && sigkey) { 442 BIO *sigbio; 443 sigbio = BIO_new_file(sigfile, "rb"); 444 siglen = EVP_PKEY_size(sigkey); 445 sigbuf = OPENSSL_malloc(siglen); 446 if (!sigbio) { 447 BIO_printf(bio_err, "Error opening signature file %s\n", sigfile); 448 ERR_print_errors(bio_err); 449 goto end; 450 } 451 if (!sigbuf) { 452 BIO_printf(bio_err, "Out of memory\n"); 453 ERR_print_errors(bio_err); 454 goto end; 455 } 456 siglen = BIO_read(sigbio, sigbuf, siglen); 457 BIO_free(sigbio); 458 if (siglen <= 0) { 459 BIO_printf(bio_err, "Error reading signature file %s\n", sigfile); 460 ERR_print_errors(bio_err); 461 goto end; 462 } 463 } 464 inp = BIO_push(bmd, in); 465 466 if (md == NULL) { 467 EVP_MD_CTX *tctx; 468 BIO_get_md_ctx(bmd, &tctx); 469 md = EVP_MD_CTX_md(tctx); 470 } 471 472 if (argc == 0) { 473 BIO_set_fp(in, stdin, BIO_NOCLOSE); 474 err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf, 475 siglen, NULL, NULL, "stdin", bmd); 476 } else { 477 const char *md_name = NULL, *sig_name = NULL; 478 if (!out_bin) { 479 if (sigkey) { 480 const EVP_PKEY_ASN1_METHOD *ameth; 481 ameth = EVP_PKEY_get0_asn1(sigkey); 482 if (ameth) 483 EVP_PKEY_asn1_get0_info(NULL, NULL, 484 NULL, NULL, &sig_name, ameth); 485 } 486 md_name = EVP_MD_name(md); 487 } 488 err = 0; 489 for (i = 0; i < argc; i++) { 490 int r; 491 if (BIO_read_filename(in, argv[i]) <= 0) { 492 perror(argv[i]); 493 err++; 494 continue; 495 } else 496 r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf, 497 siglen, sig_name, md_name, argv[i], bmd); 498 if (r) 499 err = r; 500 (void)BIO_reset(bmd); 501 } 502 } 503 end: 504 if (buf != NULL) { 505 OPENSSL_cleanse(buf, BUFSIZE); 506 OPENSSL_free(buf); 507 } 508 if (in != NULL) 509 BIO_free(in); 510 if (passin) 511 OPENSSL_free(passin); 512 BIO_free_all(out); 513 EVP_PKEY_free(sigkey); 514 if (sigopts) 515 sk_OPENSSL_STRING_free(sigopts); 516 if (macopts) 517 sk_OPENSSL_STRING_free(macopts); 518 if (sigbuf) 519 OPENSSL_free(sigbuf); 520 if (bmd != NULL) 521 BIO_free(bmd); 522 apps_shutdown(); 523 OPENSSL_EXIT(err); 524} 525 526int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, 527 EVP_PKEY *key, unsigned char *sigin, int siglen, 528 const char *sig_name, const char *md_name, 529 const char *file, BIO *bmd) 530{ 531 size_t len; 532 int i; 533 534 for (;;) { 535 i = BIO_read(bp, (char *)buf, BUFSIZE); 536 if (i < 0) { 537 BIO_printf(bio_err, "Read Error in %s\n", file); 538 ERR_print_errors(bio_err); 539 return 1; 540 } 541 if (i == 0) 542 break; 543 } 544 if (sigin) { 545 EVP_MD_CTX *ctx; 546 BIO_get_md_ctx(bp, &ctx); 547 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen); 548 if (i > 0) 549 BIO_printf(out, "Verified OK\n"); 550 else if (i == 0) { 551 BIO_printf(out, "Verification Failure\n"); 552 return 1; 553 } else { 554 BIO_printf(bio_err, "Error Verifying Data\n"); 555 ERR_print_errors(bio_err); 556 return 1; 557 } 558 return 0; 559 } 560 if (key) { 561 EVP_MD_CTX *ctx; 562 BIO_get_md_ctx(bp, &ctx); 563 len = BUFSIZE; 564 if (!EVP_DigestSignFinal(ctx, buf, &len)) { 565 BIO_printf(bio_err, "Error Signing Data\n"); 566 ERR_print_errors(bio_err); 567 return 1; 568 } 569 } else { 570 len = BIO_gets(bp, (char *)buf, BUFSIZE); 571 if ((int)len < 0) { 572 ERR_print_errors(bio_err); 573 return 1; 574 } 575 } 576 577 if (binout) 578 BIO_write(out, buf, len); 579 else if (sep == 2) { 580 for (i = 0; i < (int)len; i++) 581 BIO_printf(out, "%02x", buf[i]); 582 BIO_printf(out, " *%s\n", file); 583 } else { 584 if (sig_name) 585 BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file); 586 else if (md_name) 587 BIO_printf(out, "%s(%s)= ", md_name, file); 588 else 589 BIO_printf(out, "(%s)= ", file); 590 for (i = 0; i < (int)len; i++) { 591 if (sep && (i != 0)) 592 BIO_printf(out, ":"); 593 BIO_printf(out, "%02x", buf[i]); 594 } 595 BIO_printf(out, "\n"); 596 } 597 return 0; 598} 599