1 /* $OpenBSD: dgst.c,v 1.1 2014/08/26 17:47:24 jsing 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 dgst_main(int, char **); 102 103 int 104 dgst_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; 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 if ((buf = malloc(BUFSIZE)) == NULL) { 133 BIO_printf(bio_err, "out of memory\n"); 134 goto end; 135 } 136 137 /* first check the program name */ 138 program_name(argv[0], pname, sizeof pname); 139 140 md = EVP_get_digestbyname(pname); 141 142 argc--; 143 argv++; 144 while (argc > 0) { 145 if ((*argv)[0] != '-') 146 break; 147 if (strcmp(*argv, "-c") == 0) 148 separator = 1; 149 else if (strcmp(*argv, "-r") == 0) 150 separator = 2; 151 else if (strcmp(*argv, "-out") == 0) { 152 if (--argc < 1) 153 break; 154 outfile = *(++argv); 155 } else if (strcmp(*argv, "-sign") == 0) { 156 if (--argc < 1) 157 break; 158 keyfile = *(++argv); 159 } else if (!strcmp(*argv, "-passin")) { 160 if (--argc < 1) 161 break; 162 passargin = *++argv; 163 } else if (strcmp(*argv, "-verify") == 0) { 164 if (--argc < 1) 165 break; 166 keyfile = *(++argv); 167 want_pub = 1; 168 do_verify = 1; 169 } else if (strcmp(*argv, "-prverify") == 0) { 170 if (--argc < 1) 171 break; 172 keyfile = *(++argv); 173 do_verify = 1; 174 } else if (strcmp(*argv, "-signature") == 0) { 175 if (--argc < 1) 176 break; 177 sigfile = *(++argv); 178 } else if (strcmp(*argv, "-keyform") == 0) { 179 if (--argc < 1) 180 break; 181 keyform = str2fmt(*(++argv)); 182 } 183 #ifndef OPENSSL_NO_ENGINE 184 else if (strcmp(*argv, "-engine") == 0) { 185 if (--argc < 1) 186 break; 187 engine = *(++argv); 188 e = setup_engine(bio_err, engine, 0); 189 } 190 #endif 191 else if (strcmp(*argv, "-hex") == 0) 192 out_bin = 0; 193 else if (strcmp(*argv, "-binary") == 0) 194 out_bin = 1; 195 else if (strcmp(*argv, "-d") == 0) 196 debug = 1; 197 else if (!strcmp(*argv, "-hmac")) { 198 if (--argc < 1) 199 break; 200 hmac_key = *++argv; 201 } else if (!strcmp(*argv, "-mac")) { 202 if (--argc < 1) 203 break; 204 mac_name = *++argv; 205 } else if (strcmp(*argv, "-sigopt") == 0) { 206 if (--argc < 1) 207 break; 208 if (!sigopts) 209 sigopts = sk_OPENSSL_STRING_new_null(); 210 if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv))) 211 break; 212 } else if (strcmp(*argv, "-macopt") == 0) { 213 if (--argc < 1) 214 break; 215 if (!macopts) 216 macopts = sk_OPENSSL_STRING_new_null(); 217 if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv))) 218 break; 219 } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL) 220 md = m; 221 else 222 break; 223 argc--; 224 argv++; 225 } 226 227 228 if (do_verify && !sigfile) { 229 BIO_printf(bio_err, "No signature to verify: use the -signature option\n"); 230 goto end; 231 } 232 if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */ 233 BIO_printf(bio_err, "unknown option '%s'\n", *argv); 234 BIO_printf(bio_err, "options are\n"); 235 BIO_printf(bio_err, "-c to output the digest with separating colons\n"); 236 BIO_printf(bio_err, "-r to output the digest in coreutils format\n"); 237 BIO_printf(bio_err, "-d to output debug info\n"); 238 BIO_printf(bio_err, "-hex output as hex dump\n"); 239 BIO_printf(bio_err, "-binary output in binary form\n"); 240 BIO_printf(bio_err, "-sign file sign digest using private key in file\n"); 241 BIO_printf(bio_err, "-verify file verify a signature using public key in file\n"); 242 BIO_printf(bio_err, "-prverify file verify a signature using private key in file\n"); 243 BIO_printf(bio_err, "-keyform arg key file format (PEM or ENGINE)\n"); 244 BIO_printf(bio_err, "-out filename output to filename rather than stdout\n"); 245 BIO_printf(bio_err, "-signature file signature to verify\n"); 246 BIO_printf(bio_err, "-sigopt nm:v signature parameter\n"); 247 BIO_printf(bio_err, "-hmac key create hashed MAC with key\n"); 248 BIO_printf(bio_err, "-mac algorithm create MAC (not neccessarily HMAC)\n"); 249 BIO_printf(bio_err, "-macopt nm:v MAC algorithm parameters or key\n"); 250 #ifndef OPENSSL_NO_ENGINE 251 BIO_printf(bio_err, "-engine e use engine e, possibly a hardware device.\n"); 252 #endif 253 254 EVP_MD_do_all_sorted(list_md_fn, bio_err); 255 goto end; 256 } 257 in = BIO_new(BIO_s_file()); 258 bmd = BIO_new(BIO_f_md()); 259 if (debug) { 260 BIO_set_callback(in, BIO_debug_callback); 261 /* needed for windows 3.1 */ 262 BIO_set_callback_arg(in, (char *) bio_err); 263 } 264 if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) { 265 BIO_printf(bio_err, "Error getting password\n"); 266 goto end; 267 } 268 if ((in == NULL) || (bmd == NULL)) { 269 ERR_print_errors(bio_err); 270 goto end; 271 } 272 if (out_bin == -1) { 273 if (keyfile) 274 out_bin = 1; 275 else 276 out_bin = 0; 277 } 278 279 if (outfile) { 280 if (out_bin) 281 out = BIO_new_file(outfile, "wb"); 282 else 283 out = BIO_new_file(outfile, "w"); 284 } else { 285 out = BIO_new_fp(stdout, BIO_NOCLOSE); 286 } 287 288 if (!out) { 289 BIO_printf(bio_err, "Error opening output file %s\n", 290 outfile ? outfile : "(stdout)"); 291 ERR_print_errors(bio_err); 292 goto end; 293 } 294 if ((!!mac_name + !!keyfile + !!hmac_key) > 1) { 295 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n"); 296 goto end; 297 } 298 if (keyfile) { 299 if (want_pub) 300 sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL, 301 e, "key file"); 302 else 303 sigkey = load_key(bio_err, keyfile, keyform, 0, passin, 304 e, "key file"); 305 if (!sigkey) { 306 /* 307 * load_[pub]key() has already printed an appropriate 308 * message 309 */ 310 goto end; 311 } 312 } 313 if (mac_name) { 314 EVP_PKEY_CTX *mac_ctx = NULL; 315 int r = 0; 316 if (!init_gen_str(bio_err, &mac_ctx, mac_name, e, 0)) 317 goto mac_end; 318 if (macopts) { 319 char *macopt; 320 for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) { 321 macopt = sk_OPENSSL_STRING_value(macopts, i); 322 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) { 323 BIO_printf(bio_err, 324 "MAC parameter error \"%s\"\n", 325 macopt); 326 ERR_print_errors(bio_err); 327 goto mac_end; 328 } 329 } 330 } 331 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) { 332 BIO_puts(bio_err, "Error generating key\n"); 333 ERR_print_errors(bio_err); 334 goto mac_end; 335 } 336 r = 1; 337 mac_end: 338 if (mac_ctx) 339 EVP_PKEY_CTX_free(mac_ctx); 340 if (r == 0) 341 goto end; 342 } 343 if (hmac_key) { 344 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e, 345 (unsigned char *) hmac_key, -1); 346 if (!sigkey) 347 goto end; 348 } 349 if (sigkey) { 350 EVP_MD_CTX *mctx = NULL; 351 EVP_PKEY_CTX *pctx = NULL; 352 int r; 353 if (!BIO_get_md_ctx(bmd, &mctx)) { 354 BIO_printf(bio_err, "Error getting context\n"); 355 ERR_print_errors(bio_err); 356 goto end; 357 } 358 if (do_verify) 359 r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey); 360 else 361 r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey); 362 if (!r) { 363 BIO_printf(bio_err, "Error setting context\n"); 364 ERR_print_errors(bio_err); 365 goto end; 366 } 367 if (sigopts) { 368 char *sigopt; 369 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) { 370 sigopt = sk_OPENSSL_STRING_value(sigopts, i); 371 if (pkey_ctrl_string(pctx, sigopt) <= 0) { 372 BIO_printf(bio_err, 373 "parameter error \"%s\"\n", 374 sigopt); 375 ERR_print_errors(bio_err); 376 goto end; 377 } 378 } 379 } 380 } 381 /* we use md as a filter, reading from 'in' */ 382 else { 383 if (md == NULL) 384 md = EVP_md5(); 385 if (!BIO_set_md(bmd, md)) { 386 BIO_printf(bio_err, "Error setting digest %s\n", pname); 387 ERR_print_errors(bio_err); 388 goto end; 389 } 390 } 391 392 if (sigfile && sigkey) { 393 BIO *sigbio; 394 sigbio = BIO_new_file(sigfile, "rb"); 395 siglen = EVP_PKEY_size(sigkey); 396 sigbuf = malloc(siglen); 397 if (!sigbio) { 398 BIO_printf(bio_err, "Error opening signature file %s\n", 399 sigfile); 400 ERR_print_errors(bio_err); 401 goto end; 402 } 403 siglen = BIO_read(sigbio, sigbuf, siglen); 404 BIO_free(sigbio); 405 if (siglen <= 0) { 406 BIO_printf(bio_err, "Error reading signature file %s\n", 407 sigfile); 408 ERR_print_errors(bio_err); 409 goto end; 410 } 411 } 412 inp = BIO_push(bmd, in); 413 414 if (md == NULL) { 415 EVP_MD_CTX *tctx; 416 BIO_get_md_ctx(bmd, &tctx); 417 md = EVP_MD_CTX_md(tctx); 418 } 419 if (argc == 0) { 420 BIO_set_fp(in, stdin, BIO_NOCLOSE); 421 err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf, 422 siglen, NULL, NULL, "stdin", bmd); 423 } else { 424 const char *md_name = NULL, *sig_name = NULL; 425 if (!out_bin) { 426 if (sigkey) { 427 const EVP_PKEY_ASN1_METHOD *ameth; 428 ameth = EVP_PKEY_get0_asn1(sigkey); 429 if (ameth) 430 EVP_PKEY_asn1_get0_info(NULL, NULL, 431 NULL, NULL, &sig_name, ameth); 432 } 433 md_name = EVP_MD_name(md); 434 } 435 err = 0; 436 for (i = 0; i < argc; i++) { 437 int r; 438 if (BIO_read_filename(in, argv[i]) <= 0) { 439 perror(argv[i]); 440 err++; 441 continue; 442 } else { 443 r = do_fp(out, buf, inp, separator, out_bin, 444 sigkey, sigbuf, siglen, sig_name, md_name, 445 argv[i], bmd); 446 } 447 if (r) 448 err = r; 449 (void) BIO_reset(bmd); 450 } 451 } 452 453 end: 454 if (buf != NULL) { 455 OPENSSL_cleanse(buf, BUFSIZE); 456 free(buf); 457 } 458 if (in != NULL) 459 BIO_free(in); 460 free(passin); 461 BIO_free_all(out); 462 EVP_PKEY_free(sigkey); 463 if (sigopts) 464 sk_OPENSSL_STRING_free(sigopts); 465 if (macopts) 466 sk_OPENSSL_STRING_free(macopts); 467 free(sigbuf); 468 if (bmd != NULL) 469 BIO_free(bmd); 470 471 return (err); 472 } 473 474 int 475 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout, 476 EVP_PKEY * key, unsigned char *sigin, int siglen, 477 const char *sig_name, const char *md_name, 478 const char *file, BIO * bmd) 479 { 480 size_t len; 481 int i; 482 483 for (;;) { 484 i = BIO_read(bp, (char *) buf, BUFSIZE); 485 if (i < 0) { 486 BIO_printf(bio_err, "Read Error in %s\n", file); 487 ERR_print_errors(bio_err); 488 return 1; 489 } 490 if (i == 0) 491 break; 492 } 493 if (sigin) { 494 EVP_MD_CTX *ctx; 495 BIO_get_md_ctx(bp, &ctx); 496 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen); 497 if (i > 0) 498 BIO_printf(out, "Verified OK\n"); 499 else if (i == 0) { 500 BIO_printf(out, "Verification Failure\n"); 501 return 1; 502 } else { 503 BIO_printf(bio_err, "Error Verifying Data\n"); 504 ERR_print_errors(bio_err); 505 return 1; 506 } 507 return 0; 508 } 509 if (key) { 510 EVP_MD_CTX *ctx; 511 BIO_get_md_ctx(bp, &ctx); 512 len = BUFSIZE; 513 if (!EVP_DigestSignFinal(ctx, buf, &len)) { 514 BIO_printf(bio_err, "Error Signing Data\n"); 515 ERR_print_errors(bio_err); 516 return 1; 517 } 518 } else { 519 len = BIO_gets(bp, (char *) buf, BUFSIZE); 520 if ((int) len < 0) { 521 ERR_print_errors(bio_err); 522 return 1; 523 } 524 } 525 526 if (binout) 527 BIO_write(out, buf, len); 528 else if (sep == 2) { 529 for (i = 0; i < (int) len; i++) 530 BIO_printf(out, "%02x", buf[i]); 531 BIO_printf(out, " *%s\n", file); 532 } else { 533 if (sig_name) 534 BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file); 535 else if (md_name) 536 BIO_printf(out, "%s(%s)= ", md_name, file); 537 else 538 BIO_printf(out, "(%s)= ", file); 539 for (i = 0; i < (int) len; i++) { 540 if (sep && (i != 0)) 541 BIO_printf(out, ":"); 542 BIO_printf(out, "%02x", buf[i]); 543 } 544 BIO_printf(out, "\n"); 545 } 546 return 0; 547 } 548