apps/dgst.c

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