1 /* $OpenBSD: dgst.c,v 1.8 2015/10/17 07:51:10 semarie Exp $ */ 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 <stdlib.h> 61 #include <string.h> 62 63 #include "apps.h" 64 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/evp.h> 68 #include <openssl/hmac.h> 69 #include <openssl/objects.h> 70 #include <openssl/pem.h> 71 #include <openssl/x509.h> 72 73 #define BUFSIZE 1024*8 74 75 int 76 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout, 77 EVP_PKEY * key, unsigned char *sigin, int siglen, 78 const char *sig_name, const char *md_name, 79 const char *file, BIO * bmd); 80 81 static void 82 list_md_fn(const EVP_MD * m, const char *from, const char *to, void *arg) 83 { 84 const char *mname; 85 /* Skip aliases */ 86 if (!m) 87 return; 88 mname = OBJ_nid2ln(EVP_MD_type(m)); 89 /* Skip shortnames */ 90 if (strcmp(from, mname)) 91 return; 92 /* Skip clones */ 93 if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST) 94 return; 95 if (strchr(mname, ' ')) 96 mname = EVP_MD_name(m); 97 BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n", 98 mname, mname); 99 } 100 101 int 102 dgst_main(int argc, char **argv) 103 { 104 unsigned char *buf = NULL; 105 int i, err = 1; 106 const EVP_MD *md = NULL, *m; 107 BIO *in = NULL, *inp; 108 BIO *bmd = NULL; 109 BIO *out = NULL; 110 #define PROG_NAME_SIZE 39 111 char pname[PROG_NAME_SIZE + 1]; 112 int separator = 0; 113 int debug = 0; 114 int keyform = FORMAT_PEM; 115 const char *outfile = NULL, *keyfile = NULL; 116 const char *sigfile = NULL; 117 int out_bin = -1, want_pub = 0, do_verify = 0; 118 EVP_PKEY *sigkey = NULL; 119 unsigned char *sigbuf = NULL; 120 int siglen = 0; 121 char *passargin = NULL, *passin = NULL; 122 char *hmac_key = NULL; 123 char *mac_name = NULL; 124 STACK_OF(OPENSSL_STRING) * sigopts = NULL, *macopts = NULL; 125 126 if (single_execution) { 127 if (pledge("stdio rpath wpath cpath tty", NULL) == -1) { 128 perror("pledge"); 129 exit(1); 130 } 131 } 132 133 if ((buf = malloc(BUFSIZE)) == NULL) { 134 BIO_printf(bio_err, "out of memory\n"); 135 goto end; 136 } 137 138 /* first check the program name */ 139 program_name(argv[0], pname, sizeof pname); 140 141 md = EVP_get_digestbyname(pname); 142 143 argc--; 144 argv++; 145 while (argc > 0) { 146 if ((*argv)[0] != '-') 147 break; 148 if (strcmp(*argv, "-c") == 0) 149 separator = 1; 150 else if (strcmp(*argv, "-r") == 0) 151 separator = 2; 152 else if (strcmp(*argv, "-out") == 0) { 153 if (--argc < 1) 154 break; 155 outfile = *(++argv); 156 } else if (strcmp(*argv, "-sign") == 0) { 157 if (--argc < 1) 158 break; 159 keyfile = *(++argv); 160 } else if (!strcmp(*argv, "-passin")) { 161 if (--argc < 1) 162 break; 163 passargin = *++argv; 164 } else if (strcmp(*argv, "-verify") == 0) { 165 if (--argc < 1) 166 break; 167 keyfile = *(++argv); 168 want_pub = 1; 169 do_verify = 1; 170 } else if (strcmp(*argv, "-prverify") == 0) { 171 if (--argc < 1) 172 break; 173 keyfile = *(++argv); 174 do_verify = 1; 175 } else if (strcmp(*argv, "-signature") == 0) { 176 if (--argc < 1) 177 break; 178 sigfile = *(++argv); 179 } else if (strcmp(*argv, "-keyform") == 0) { 180 if (--argc < 1) 181 break; 182 keyform = str2fmt(*(++argv)); 183 } 184 else if (strcmp(*argv, "-hex") == 0) 185 out_bin = 0; 186 else if (strcmp(*argv, "-binary") == 0) 187 out_bin = 1; 188 else if (strcmp(*argv, "-d") == 0) 189 debug = 1; 190 else if (!strcmp(*argv, "-hmac")) { 191 if (--argc < 1) 192 break; 193 hmac_key = *++argv; 194 } else if (!strcmp(*argv, "-mac")) { 195 if (--argc < 1) 196 break; 197 mac_name = *++argv; 198 } else if (strcmp(*argv, "-sigopt") == 0) { 199 if (--argc < 1) 200 break; 201 if (!sigopts) 202 sigopts = sk_OPENSSL_STRING_new_null(); 203 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv))) 204 break; 205 } else if (strcmp(*argv, "-macopt") == 0) { 206 if (--argc < 1) 207 break; 208 if (!macopts) 209 macopts = sk_OPENSSL_STRING_new_null(); 210 if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv))) 211 break; 212 } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL) 213 md = m; 214 else 215 break; 216 argc--; 217 argv++; 218 } 219 220 221 if (do_verify && !sigfile) { 222 BIO_printf(bio_err, "No signature to verify: use the -signature option\n"); 223 goto end; 224 } 225 if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */ 226 BIO_printf(bio_err, "unknown option '%s'\n", *argv); 227 BIO_printf(bio_err, "options are\n"); 228 BIO_printf(bio_err, "-c to output the digest with separating colons\n"); 229 BIO_printf(bio_err, "-r to output the digest in coreutils format\n"); 230 BIO_printf(bio_err, "-d to output debug info\n"); 231 BIO_printf(bio_err, "-hex output as hex dump\n"); 232 BIO_printf(bio_err, "-binary output in binary form\n"); 233 BIO_printf(bio_err, "-sign file sign digest using private key in file\n"); 234 BIO_printf(bio_err, "-verify file verify a signature using public key in file\n"); 235 BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n"); 236 BIO_printf(bio_err, "-keyform arg key file format (PEM)\n"); 237 BIO_printf(bio_err, "-out filename output to filename rather than stdout\n"); 238 BIO_printf(bio_err, "-signature file signature to verify\n"); 239 BIO_printf(bio_err, "-sigopt nm:v signature parameter\n"); 240 BIO_printf(bio_err, "-hmac key create hashed MAC with key\n"); 241 BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n"); 242 BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n"); 243 244 EVP_MD_do_all_sorted(list_md_fn, bio_err); 245 goto end; 246 } 247 248 in = BIO_new(BIO_s_file()); 249 bmd = BIO_new(BIO_f_md()); 250 if (in == NULL || bmd == NULL) { 251 ERR_print_errors(bio_err); 252 goto end; 253 } 254 255 if (debug) { 256 BIO_set_callback(in, BIO_debug_callback); 257 /* needed for windows 3.1 */ 258 BIO_set_callback_arg(in, (char *) bio_err); 259 } 260 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 261 BIO_printf(bio_err, "Error getting password\n"); 262 goto end; 263 } 264 if (out_bin == -1) { 265 if (keyfile) 266 out_bin = 1; 267 else 268 out_bin = 0; 269 } 270 271 if (outfile) { 272 if (out_bin) 273 out = BIO_new_file(outfile, "wb"); 274 else 275 out = BIO_new_file(outfile, "w"); 276 } else { 277 out = BIO_new_fp(stdout, BIO_NOCLOSE); 278 } 279 280 if (!out) { 281 BIO_printf(bio_err, "Error opening output file %s\n", 282 outfile ? outfile : "(stdout)"); 283 ERR_print_errors(bio_err); 284 goto end; 285 } 286 if ((!!mac_name + !!keyfile + !!hmac_key) > 1) { 287 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n"); 288 goto end; 289 } 290 if (keyfile) { 291 if (want_pub) 292 sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL, 293 "key file"); 294 else 295 sigkey = load_key(bio_err, keyfile, keyform, 0, passin, 296 "key file"); 297 if (!sigkey) { 298 /* 299 * load_[pub]key() has already printed an appropriate 300 * message 301 */ 302 goto end; 303 } 304 } 305 if (mac_name) { 306 EVP_PKEY_CTX *mac_ctx = NULL; 307 int r = 0; 308 if (!init_gen_str(bio_err, &mac_ctx, mac_name, 0)) 309 goto mac_end; 310 if (macopts) { 311 char *macopt; 312 for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) { 313 macopt = sk_OPENSSL_STRING_value(macopts, i); 314 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) { 315 BIO_printf(bio_err, 316 "MAC parameter error \"%s\"\n", 317 macopt); 318 ERR_print_errors(bio_err); 319 goto mac_end; 320 } 321 } 322 } 323 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) { 324 BIO_puts(bio_err, "Error generating key\n"); 325 ERR_print_errors(bio_err); 326 goto mac_end; 327 } 328 r = 1; 329 mac_end: 330 if (mac_ctx) 331 EVP_PKEY_CTX_free(mac_ctx); 332 if (r == 0) 333 goto end; 334 } 335 if (hmac_key) { 336 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, 337 (unsigned char *) hmac_key, -1); 338 if (!sigkey) 339 goto end; 340 } 341 if (sigkey) { 342 EVP_MD_CTX *mctx = NULL; 343 EVP_PKEY_CTX *pctx = NULL; 344 int r; 345 if (!BIO_get_md_ctx(bmd, &mctx)) { 346 BIO_printf(bio_err, "Error getting context\n"); 347 ERR_print_errors(bio_err); 348 goto end; 349 } 350 if (do_verify) 351 r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey); 352 else 353 r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey); 354 if (!r) { 355 BIO_printf(bio_err, "Error setting context\n"); 356 ERR_print_errors(bio_err); 357 goto end; 358 } 359 if (sigopts) { 360 char *sigopt; 361 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) { 362 sigopt = sk_OPENSSL_STRING_value(sigopts, i); 363 if (pkey_ctrl_string(pctx, sigopt) <= 0) { 364 BIO_printf(bio_err, 365 "parameter error \"%s\"\n", 366 sigopt); 367 ERR_print_errors(bio_err); 368 goto end; 369 } 370 } 371 } 372 } 373 /* we use md as a filter, reading from 'in' */ 374 else { 375 if (md == NULL) 376 md = EVP_md5(); 377 if (!BIO_set_md(bmd, md)) { 378 BIO_printf(bio_err, "Error setting digest %s\n", pname); 379 ERR_print_errors(bio_err); 380 goto end; 381 } 382 } 383 384 if (sigfile && sigkey) { 385 BIO *sigbio; 386 siglen = EVP_PKEY_size(sigkey); 387 sigbuf = malloc(siglen); 388 if (sigbuf == NULL) { 389 BIO_printf(bio_err, "out of memory\n"); 390 ERR_print_errors(bio_err); 391 goto end; 392 } 393 sigbio = BIO_new_file(sigfile, "rb"); 394 if (!sigbio) { 395 BIO_printf(bio_err, "Error opening signature file %s\n", 396 sigfile); 397 ERR_print_errors(bio_err); 398 goto end; 399 } 400 siglen = BIO_read(sigbio, sigbuf, siglen); 401 BIO_free(sigbio); 402 if (siglen <= 0) { 403 BIO_printf(bio_err, "Error reading signature file %s\n", 404 sigfile); 405 ERR_print_errors(bio_err); 406 goto end; 407 } 408 } 409 inp = BIO_push(bmd, in); 410 411 if (md == NULL) { 412 EVP_MD_CTX *tctx; 413 BIO_get_md_ctx(bmd, &tctx); 414 md = EVP_MD_CTX_md(tctx); 415 } 416 if (argc == 0) { 417 BIO_set_fp(in, stdin, BIO_NOCLOSE); 418 err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf, 419 siglen, NULL, NULL, "stdin", bmd); 420 } else { 421 const char *md_name = NULL, *sig_name = NULL; 422 if (!out_bin) { 423 if (sigkey) { 424 const EVP_PKEY_ASN1_METHOD *ameth; 425 ameth = EVP_PKEY_get0_asn1(sigkey); 426 if (ameth) 427 EVP_PKEY_asn1_get0_info(NULL, NULL, 428 NULL, NULL, &sig_name, ameth); 429 } 430 md_name = EVP_MD_name(md); 431 } 432 err = 0; 433 for (i = 0; i < argc; i++) { 434 int r; 435 if (BIO_read_filename(in, argv[i]) <= 0) { 436 perror(argv[i]); 437 err++; 438 continue; 439 } else { 440 r = do_fp(out, buf, inp, separator, out_bin, 441 sigkey, sigbuf, siglen, sig_name, md_name, 442 argv[i], bmd); 443 } 444 if (r) 445 err = r; 446 (void) BIO_reset(bmd); 447 } 448 } 449 450 end: 451 if (buf != NULL) { 452 explicit_bzero(buf, BUFSIZE); 453 free(buf); 454 } 455 if (in != NULL) 456 BIO_free(in); 457 free(passin); 458 BIO_free_all(out); 459 EVP_PKEY_free(sigkey); 460 if (sigopts) 461 sk_OPENSSL_STRING_free(sigopts); 462 if (macopts) 463 sk_OPENSSL_STRING_free(macopts); 464 free(sigbuf); 465 if (bmd != NULL) 466 BIO_free(bmd); 467 468 return (err); 469 } 470 471 int 472 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout, 473 EVP_PKEY * key, unsigned char *sigin, int siglen, 474 const char *sig_name, const char *md_name, 475 const char *file, BIO * bmd) 476 { 477 size_t len; 478 int i; 479 480 for (;;) { 481 i = BIO_read(bp, (char *) buf, BUFSIZE); 482 if (i < 0) { 483 BIO_printf(bio_err, "Read Error in %s\n", file); 484 ERR_print_errors(bio_err); 485 return 1; 486 } 487 if (i == 0) 488 break; 489 } 490 if (sigin) { 491 EVP_MD_CTX *ctx; 492 BIO_get_md_ctx(bp, &ctx); 493 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen); 494 if (i > 0) 495 BIO_printf(out, "Verified OK\n"); 496 else if (i == 0) { 497 BIO_printf(out, "Verification Failure\n"); 498 return 1; 499 } else { 500 BIO_printf(bio_err, "Error Verifying Data\n"); 501 ERR_print_errors(bio_err); 502 return 1; 503 } 504 return 0; 505 } 506 if (key) { 507 EVP_MD_CTX *ctx; 508 BIO_get_md_ctx(bp, &ctx); 509 len = BUFSIZE; 510 if (!EVP_DigestSignFinal(ctx, buf, &len)) { 511 BIO_printf(bio_err, "Error Signing Data\n"); 512 ERR_print_errors(bio_err); 513 return 1; 514 } 515 } else { 516 len = BIO_gets(bp, (char *) buf, BUFSIZE); 517 if ((int) len < 0) { 518 ERR_print_errors(bio_err); 519 return 1; 520 } 521 } 522 523 if (binout) 524 BIO_write(out, buf, len); 525 else if (sep == 2) { 526 for (i = 0; i < (int) len; i++) 527 BIO_printf(out, "%02x", buf[i]); 528 BIO_printf(out, " *%s\n", file); 529 } else { 530 if (sig_name) 531 BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file); 532 else if (md_name) 533 BIO_printf(out, "%s(%s)= ", md_name, file); 534 else 535 BIO_printf(out, "(%s)= ", file); 536 for (i = 0; i < (int) len; i++) { 537 if (sep && (i != 0)) 538 BIO_printf(out, ":"); 539 BIO_printf(out, "%02x", buf[i]); 540 } 541 BIO_printf(out, "\n"); 542 } 543 return 0; 544 } 545