bin/openssl/dgst.c

   1 /* $OpenBSD: dgst.c,v 1.12 2018/02/07 05:47:55 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
 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 cpath wpath rpath 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         freezero(buf, BUFSIZE);
 452         if (in != NULL)
 453                 BIO_free(in);
 454         free(passin);
 455         BIO_free_all(out);
 456         EVP_PKEY_free(sigkey);
 457         if (sigopts)
 458                 sk_OPENSSL_STRING_free(sigopts);
 459         if (macopts)
 460                 sk_OPENSSL_STRING_free(macopts);
 461         free(sigbuf);
 462         if (bmd != NULL)
 463                 BIO_free(bmd);
 464
 465         return (err);
 466 }
 467
 468 int
 469 do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
 470     EVP_PKEY * key, unsigned char *sigin, int siglen,
 471     const char *sig_name, const char *md_name,
 472     const char *file, BIO * bmd)
 473 {
 474         size_t len;
 475         int i;
 476
 477         for (;;) {
 478                 i = BIO_read(bp, (char *) buf, BUFSIZE);
 479                 if (i < 0) {
 480                         BIO_printf(bio_err, "Read Error in %s\n", file);
 481                         ERR_print_errors(bio_err);
 482                         return 1;
 483                 }
 484                 if (i == 0)
 485                         break;
 486         }
 487         if (sigin) {
 488                 EVP_MD_CTX *ctx;
 489                 BIO_get_md_ctx(bp, &ctx);
 490                 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
 491                 if (i > 0)
 492                         BIO_printf(out, "Verified OK\n");
 493                 else if (i == 0) {
 494                         BIO_printf(out, "Verification Failure\n");
 495                         return 1;
 496                 } else {
 497                         BIO_printf(bio_err, "Error Verifying Data\n");
 498                         ERR_print_errors(bio_err);
 499                         return 1;
 500                 }
 501                 return 0;
 502         }
 503         if (key) {
 504                 EVP_MD_CTX *ctx;
 505                 BIO_get_md_ctx(bp, &ctx);
 506                 len = BUFSIZE;
 507                 if (!EVP_DigestSignFinal(ctx, buf, &len)) {
 508                         BIO_printf(bio_err, "Error Signing Data\n");
 509                         ERR_print_errors(bio_err);
 510                         return 1;
 511                 }
 512         } else {
 513                 len = BIO_gets(bp, (char *) buf, BUFSIZE);
 514                 if ((int) len < 0) {
 515                         ERR_print_errors(bio_err);
 516                         return 1;
 517                 }
 518         }
 519
 520         if (binout)
 521                 BIO_write(out, buf, len);
 522         else if (sep == 2) {
 523                 for (i = 0; i < (int) len; i++)
 524                         BIO_printf(out, "%02x", buf[i]);
 525                 BIO_printf(out, " *%s\n", file);
 526         } else {
 527                 if (sig_name)
 528                         BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
 529                 else if (md_name)
 530                         BIO_printf(out, "%s(%s)= ", md_name, file);
 531                 else
 532                         BIO_printf(out, "(%s)= ", file);
 533                 for (i = 0; i < (int) len; i++) {
 534                         if (sep && (i != 0))
 535                                 BIO_printf(out, ":");
 536                         BIO_printf(out, "%02x", buf[i]);
 537                 }
 538                 BIO_printf(out, "\n");
 539         }
 540         return 0;
 541 }