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 #ifndef OPENSSL_NO_ENGINE
 115     {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
 116     {"engine_impl", OPT_ENGINE_IMPL, '-'},
 117 #endif
 118     {"", OPT_DIGEST, '-', "Any supported digest"},
 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 (do_verify && !sigfile) {
 240         BIO_printf(bio_err,
 241                    "No signature to verify: use the -signature option\n");
 242         goto end;
 243     }
 244     if (engine_impl)
 245         impl = e;
 246
 247     in = BIO_new(BIO_s_file());
 248     bmd = BIO_new(BIO_f_md());
 249     if ((in == NULL) || (bmd == NULL)) {
 250         ERR_print_errors(bio_err);
 251         goto end;
 252     }
 253
 254     if (debug) {
 255         BIO_set_callback(in, BIO_debug_callback);
 256         /* needed for windows 3.1 */
 257         BIO_set_callback_arg(in, (char *)bio_err);
 258     }
 259
 260     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 261         BIO_printf(bio_err, "Error getting password\n");
 262         goto end;
 263     }
 264
 265     if (out_bin == -1) {
 266         if (keyfile)
 267             out_bin = 1;
 268         else
 269             out_bin = 0;
 270     }
 271
 272     if (randfile)
 273         app_RAND_load_file(randfile, 0);
 274
 275     out = bio_open_default(outfile, out_bin ? "wb" : "w");
 276     if (out == NULL)
 277         goto end;
 278
 279     if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) {
 280         BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 281         goto end;
 282     }
 283
 284     if (keyfile) {
 285         if (want_pub)
 286             sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
 287         else
 288             sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
 289         if (!sigkey) {
 290             /*
 291              * load_[pub]key() has already printed an appropriate message
 292              */
 293             goto end;
 294         }
 295     }
 296
 297     if (mac_name) {
 298         EVP_PKEY_CTX *mac_ctx = NULL;
 299         int r = 0;
 300         if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
 301             goto mac_end;
 302         if (macopts) {
 303             char *macopt;
 304             for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
 305                 macopt = sk_OPENSSL_STRING_value(macopts, i);
 306                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
 307                     BIO_printf(bio_err,
 308                                "MAC parameter error \"%s\"\n", macopt);
 309                     ERR_print_errors(bio_err);
 310                     goto mac_end;
 311                 }
 312             }
 313         }
 314         if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
 315             BIO_puts(bio_err, "Error generating key\n");
 316             ERR_print_errors(bio_err);
 317             goto mac_end;
 318         }
 319         r = 1;
 320  mac_end:
 321         EVP_PKEY_CTX_free(mac_ctx);
 322         if (r == 0)
 323             goto end;
 324     }
 325
 326     if (non_fips_allow) {
 327         EVP_MD_CTX *md_ctx;
 328         BIO_get_md_ctx(bmd, &md_ctx);
 329         EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 330     }
 331
 332     if (hmac_key) {
 333         sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
 334                                       (unsigned char *)hmac_key, -1);
 335         if (!sigkey)
 336             goto end;
 337     }
 338
 339     if (sigkey) {
 340         EVP_MD_CTX *mctx = NULL;
 341         EVP_PKEY_CTX *pctx = NULL;
 342         int r;
 343         if (!BIO_get_md_ctx(bmd, &mctx)) {
 344             BIO_printf(bio_err, "Error getting context\n");
 345             ERR_print_errors(bio_err);
 346             goto end;
 347         }
 348         if (do_verify)
 349             r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
 350         else
 351             r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
 352         if (!r) {
 353             BIO_printf(bio_err, "Error setting context\n");
 354             ERR_print_errors(bio_err);
 355             goto end;
 356         }
 357         if (sigopts) {
 358             char *sigopt;
 359             for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
 360                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
 361                 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
 362                     BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
 363                     ERR_print_errors(bio_err);
 364                     goto end;
 365                 }
 366             }
 367         }
 368     }
 369     /* we use md as a filter, reading from 'in' */
 370     else {
 371         EVP_MD_CTX *mctx = NULL;
 372         if (!BIO_get_md_ctx(bmd, &mctx)) {
 373             BIO_printf(bio_err, "Error getting context\n");
 374             ERR_print_errors(bio_err);
 375             goto end;
 376         }
 377         if (md == NULL)
 378             md = EVP_md5();
 379         if (!EVP_DigestInit_ex(mctx, md, impl)) {
 380             BIO_printf(bio_err, "Error setting digest\n");
 381             ERR_print_errors(bio_err);
 382             goto end;
 383         }
 384     }
 385
 386     if (sigfile && sigkey) {
 387         BIO *sigbio = BIO_new_file(sigfile, "rb");
 388         if (!sigbio) {
 389             BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
 390             ERR_print_errors(bio_err);
 391             goto end;
 392         }
 393         siglen = EVP_PKEY_size(sigkey);
 394         sigbuf = app_malloc(siglen, "signature buffer");
 395         siglen = BIO_read(sigbio, sigbuf, siglen);
 396         BIO_free(sigbio);
 397         if (siglen <= 0) {
 398             BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
 399             ERR_print_errors(bio_err);
 400             goto end;
 401         }
 402     }
 403     inp = BIO_push(bmd, in);
 404
 405     if (md == NULL) {
 406         EVP_MD_CTX *tctx;
 407         BIO_get_md_ctx(bmd, &tctx);
 408         md = EVP_MD_CTX_md(tctx);
 409     }
 410
 411     if (argc == 0) {
 412         BIO_set_fp(in, stdin, BIO_NOCLOSE);
 413         ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 414                     siglen, NULL, NULL, "stdin", bmd);
 415     } else {
 416         const char *md_name = NULL, *sig_name = NULL;
 417         if (!out_bin) {
 418             if (sigkey) {
 419                 const EVP_PKEY_ASN1_METHOD *ameth;
 420                 ameth = EVP_PKEY_get0_asn1(sigkey);
 421                 if (ameth)
 422                     EVP_PKEY_asn1_get0_info(NULL, NULL,
 423                                             NULL, NULL, &sig_name, ameth);
 424             }
 425             if (md)
 426                 md_name = EVP_MD_name(md);
 427         }
 428         ret = 0;
 429         for (i = 0; i < argc; i++) {
 430             int r;
 431             if (BIO_read_filename(in, argv[i]) <= 0) {
 432                 perror(argv[i]);
 433                 ret++;
 434                 continue;
 435             } else
 436                 r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 437                           siglen, sig_name, md_name, argv[i], bmd);
 438             if (r)
 439                 ret = r;
 440             (void)BIO_reset(bmd);
 441         }
 442     }
 443  end:
 444     OPENSSL_clear_free(buf, BUFSIZE);
 445     BIO_free(in);
 446     if (passin)
 447         OPENSSL_free(passin);
 448     BIO_free_all(out);
 449     EVP_PKEY_free(sigkey);
 450     if (sigopts)
 451         sk_OPENSSL_STRING_free(sigopts);
 452     if (macopts)
 453         sk_OPENSSL_STRING_free(macopts);
 454     if (sigbuf)
 455         OPENSSL_free(sigbuf);
 456     BIO_free(bmd);
 457     return (ret);
 458 }
 459
 460 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 461           EVP_PKEY *key, unsigned char *sigin, int siglen,
 462           const char *sig_name, const char *md_name,
 463           const char *file, BIO *bmd)
 464 {
 465     size_t len;
 466     int i;
 467
 468     for (;;) {
 469         i = BIO_read(bp, (char *)buf, BUFSIZE);
 470         if (i < 0) {
 471             BIO_printf(bio_err, "Read Error in %s\n", file);
 472             ERR_print_errors(bio_err);
 473             return 1;
 474         }
 475         if (i == 0)
 476             break;
 477     }
 478     if (sigin) {
 479         EVP_MD_CTX *ctx;
 480         BIO_get_md_ctx(bp, &ctx);
 481         i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 482         if (i > 0)
 483             BIO_printf(out, "Verified OK\n");
 484         else if (i == 0) {
 485             BIO_printf(out, "Verification Failure\n");
 486             return 1;
 487         } else {
 488             BIO_printf(bio_err, "Error Verifying Data\n");
 489             ERR_print_errors(bio_err);
 490             return 1;
 491         }
 492         return 0;
 493     }
 494     if (key) {
 495         EVP_MD_CTX *ctx;
 496         BIO_get_md_ctx(bp, &ctx);
 497         len = BUFSIZE;
 498         if (!EVP_DigestSignFinal(ctx, buf, &len)) {
 499             BIO_printf(bio_err, "Error Signing Data\n");
 500             ERR_print_errors(bio_err);
 501             return 1;
 502         }
 503     } else {
 504         len = BIO_gets(bp, (char *)buf, BUFSIZE);
 505         if ((int)len < 0) {
 506             ERR_print_errors(bio_err);
 507             return 1;
 508         }
 509     }
 510
 511     if (binout)
 512         BIO_write(out, buf, len);
 513     else if (sep == 2) {
 514         for (i = 0; i < (int)len; i++)
 515             BIO_printf(out, "%02x", buf[i]);
 516         BIO_printf(out, " *%s\n", file);
 517     } else {
 518         if (sig_name) {
 519             BIO_puts(out, sig_name);
 520             if (md_name)
 521                 BIO_printf(out, "-%s", md_name);
 522             BIO_printf(out, "(%s)= ", file);
 523         } else if (md_name)
 524             BIO_printf(out, "%s(%s)= ", md_name, file);
 525         else
 526             BIO_printf(out, "(%s)= ", file);
 527         for (i = 0; i < (int)len; i++) {
 528             if (sep && (i != 0))
 529                 BIO_printf(out, ":");
 530             BIO_printf(out, "%02x", buf[i]);
 531         }
 532         BIO_printf(out, "\n");
 533     }
 534     return 0;
 535 }