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 #ifndef OPENSSL_NO_ENGINE
 105     {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
 106 #endif
 107     {"engine_impl", OPT_ENGINE_IMPL, '-'},
 108     {"hex", OPT_HEX, '-', "Print as hex dump"},
 109     {"binary", OPT_BINARY, '-', "Print in binary form"},
 110     {"d", OPT_DEBUG, '-', "Print debug info"},
 111     {"debug", OPT_DEBUG, '-'},
 112     {"fips-fingerprint", OPT_FIPS_FINGERPRINT, '-'},
 113     {"non-fips-allow", OPT_NON_FIPS_ALLOW, '-'},
 114     {"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
 115     {"mac", OPT_MAC, 's', "Create MAC (not neccessarily HMAC)"},
 116     {"sigop", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 117     {"macop", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
 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 #ifndef OPENSSL_NO_ENGINE
 140     char *engine = NULL;
 141     int engine_impl = 0;
 142 #endif
 143
 144     prog = opt_progname(argv[0]);
 145     if ((buf = (unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) {
 146         BIO_printf(bio_err, "%s: out of memory\n", prog);
 147         goto end;
 148     }
 149     md = EVP_get_digestbyname(prog);
 150
 151     prog = opt_init(argc, argv, dgst_options);
 152     while ((o = opt_next()) != OPT_EOF) {
 153         switch (o) {
 154         case OPT_EOF:
 155         case OPT_ERR:
 156  opthelp:
 157             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 158             goto end;
 159         case OPT_HELP:
 160             opt_help(dgst_options);
 161             ret = 0;
 162             goto end;
 163         case OPT_C:
 164             separator = 1;
 165             break;
 166         case OPT_R:
 167             separator = 2;
 168             break;
 169         case OPT_RAND:
 170             randfile = opt_arg();
 171             break;
 172         case OPT_OUT:
 173             outfile = opt_arg();
 174             break;
 175         case OPT_SIGN:
 176             keyfile = opt_arg();
 177             break;
 178         case OPT_PASSIN:
 179             passinarg = opt_arg();
 180             break;
 181         case OPT_VERIFY:
 182             keyfile = opt_arg();
 183             want_pub = do_verify = 1;
 184             break;
 185         case OPT_PRVERIFY:
 186             keyfile = opt_arg();
 187             do_verify = 1;
 188             break;
 189         case OPT_SIGNATURE:
 190             sigfile = opt_arg();
 191             break;
 192         case OPT_KEYFORM:
 193             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 194                 goto opthelp;
 195             break;
 196 #ifndef OPENSSL_NO_ENGINE
 197         case OPT_ENGINE:
 198             engine = opt_arg();
 199             e = setup_engine(engine, 0);
 200             break;
 201         case OPT_ENGINE_IMPL:
 202             engine_impl = 1;
 203             break;
 204 #endif
 205         case OPT_HEX:
 206             out_bin = 0;
 207             break;
 208         case OPT_BINARY:
 209             out_bin = 1;
 210             break;
 211         case OPT_DEBUG:
 212             debug = 1;
 213             break;
 214         case OPT_FIPS_FINGERPRINT:
 215             hmac_key = "etaonrishdlcupfm";
 216             break;
 217         case OPT_NON_FIPS_ALLOW:
 218             non_fips_allow = 1;
 219             break;
 220         case OPT_HMAC:
 221             hmac_key = opt_arg();
 222             break;
 223         case OPT_MAC:
 224             mac_name = opt_arg();
 225             break;
 226         case OPT_SIGOPT:
 227             if (!sigopts)
 228                 sigopts = sk_OPENSSL_STRING_new_null();
 229             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 230                 goto opthelp;
 231             break;
 232         case OPT_MACOPT:
 233             if (!macopts)
 234                 macopts = sk_OPENSSL_STRING_new_null();
 235             if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
 236                 goto opthelp;
 237             break;
 238         case OPT_DIGEST:
 239             if (!opt_md(opt_unknown(), &m))
 240                 goto opthelp;
 241             md = m;
 242             break;
 243         }
 244     }
 245     argc = opt_num_rest();
 246     argv = opt_rest();
 247
 248     if (do_verify && !sigfile) {
 249         BIO_printf(bio_err,
 250                    "No signature to verify: use the -signature option\n");
 251         goto end;
 252     }
 253 #ifndef OPENSSL_NO_ENGINE
 254     if (engine_impl)
 255         impl = e;
 256 #endif
 257
 258     in = BIO_new(BIO_s_file());
 259     bmd = BIO_new(BIO_f_md());
 260     if ((in == NULL) || (bmd == NULL)) {
 261         ERR_print_errors(bio_err);
 262         goto end;
 263     }
 264
 265     if (debug) {
 266         BIO_set_callback(in, BIO_debug_callback);
 267         /* needed for windows 3.1 */
 268         BIO_set_callback_arg(in, (char *)bio_err);
 269     }
 270
 271     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 272         BIO_printf(bio_err, "Error getting password\n");
 273         goto end;
 274     }
 275
 276     if (out_bin == -1) {
 277         if (keyfile)
 278             out_bin = 1;
 279         else
 280             out_bin = 0;
 281     }
 282
 283     if (randfile)
 284         app_RAND_load_file(randfile, 0);
 285
 286     out = bio_open_default(outfile, out_bin ? "wb" : "w");
 287     if (out == NULL)
 288         goto end;
 289
 290     if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) {
 291         BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 292         goto end;
 293     }
 294
 295     if (keyfile) {
 296         if (want_pub)
 297             sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
 298         else
 299             sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
 300         if (!sigkey) {
 301             /*
 302              * load_[pub]key() has already printed an appropriate message
 303              */
 304             goto end;
 305         }
 306     }
 307
 308     if (mac_name) {
 309         EVP_PKEY_CTX *mac_ctx = NULL;
 310         int r = 0;
 311         if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
 312             goto mac_end;
 313         if (macopts) {
 314             char *macopt;
 315             for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
 316                 macopt = sk_OPENSSL_STRING_value(macopts, i);
 317                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
 318                     BIO_printf(bio_err,
 319                                "MAC parameter error \"%s\"\n", macopt);
 320                     ERR_print_errors(bio_err);
 321                     goto mac_end;
 322                 }
 323             }
 324         }
 325         if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
 326             BIO_puts(bio_err, "Error generating key\n");
 327             ERR_print_errors(bio_err);
 328             goto mac_end;
 329         }
 330         r = 1;
 331  mac_end:
 332         EVP_PKEY_CTX_free(mac_ctx);
 333         if (r == 0)
 334             goto end;
 335     }
 336
 337     if (non_fips_allow) {
 338         EVP_MD_CTX *md_ctx;
 339         BIO_get_md_ctx(bmd, &md_ctx);
 340         EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 341     }
 342
 343     if (hmac_key) {
 344         sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
 345                                       (unsigned char *)hmac_key, -1);
 346         if (!sigkey)
 347             goto end;
 348     }
 349
 350     if (sigkey) {
 351         EVP_MD_CTX *mctx = NULL;
 352         EVP_PKEY_CTX *pctx = NULL;
 353         int r;
 354         if (!BIO_get_md_ctx(bmd, &mctx)) {
 355             BIO_printf(bio_err, "Error getting context\n");
 356             ERR_print_errors(bio_err);
 357             goto end;
 358         }
 359         if (do_verify)
 360             r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
 361         else
 362             r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
 363         if (!r) {
 364             BIO_printf(bio_err, "Error setting context\n");
 365             ERR_print_errors(bio_err);
 366             goto end;
 367         }
 368         if (sigopts) {
 369             char *sigopt;
 370             for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
 371                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
 372                 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
 373                     BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
 374                     ERR_print_errors(bio_err);
 375                     goto end;
 376                 }
 377             }
 378         }
 379     }
 380     /* we use md as a filter, reading from 'in' */
 381     else {
 382         EVP_MD_CTX *mctx = NULL;
 383         if (!BIO_get_md_ctx(bmd, &mctx)) {
 384             BIO_printf(bio_err, "Error getting context\n");
 385             ERR_print_errors(bio_err);
 386             goto end;
 387         }
 388         if (md == NULL)
 389             md = EVP_md5();
 390         if (!EVP_DigestInit_ex(mctx, md, impl)) {
 391             BIO_printf(bio_err, "Error setting digest\n");
 392             ERR_print_errors(bio_err);
 393             goto end;
 394         }
 395     }
 396
 397     if (sigfile && sigkey) {
 398         BIO *sigbio = BIO_new_file(sigfile, "rb");
 399         if (!sigbio) {
 400             BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
 401             ERR_print_errors(bio_err);
 402             goto end;
 403         }
 404         siglen = EVP_PKEY_size(sigkey);
 405         sigbuf = OPENSSL_malloc(siglen);
 406         if (!sigbuf) {
 407             BIO_printf(bio_err, "Out of memory\n");
 408             goto end;
 409         }
 410         siglen = BIO_read(sigbio, sigbuf, siglen);
 411         BIO_free(sigbio);
 412         if (siglen <= 0) {
 413             BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
 414             ERR_print_errors(bio_err);
 415             goto end;
 416         }
 417     }
 418     inp = BIO_push(bmd, in);
 419
 420     if (md == NULL) {
 421         EVP_MD_CTX *tctx;
 422         BIO_get_md_ctx(bmd, &tctx);
 423         md = EVP_MD_CTX_md(tctx);
 424     }
 425
 426     if (argc == 0) {
 427         BIO_set_fp(in, stdin, BIO_NOCLOSE);
 428         ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 429                     siglen, NULL, NULL, "stdin", bmd);
 430     } else {
 431         const char *md_name = NULL, *sig_name = NULL;
 432         if (!out_bin) {
 433             if (sigkey) {
 434                 const EVP_PKEY_ASN1_METHOD *ameth;
 435                 ameth = EVP_PKEY_get0_asn1(sigkey);
 436                 if (ameth)
 437                     EVP_PKEY_asn1_get0_info(NULL, NULL,
 438                                             NULL, NULL, &sig_name, ameth);
 439             }
 440             if (md)
 441                 md_name = EVP_MD_name(md);
 442         }
 443         ret = 0;
 444         for (i = 0; i < argc; i++) {
 445             int r;
 446             if (BIO_read_filename(in, argv[i]) <= 0) {
 447                 perror(argv[i]);
 448                 ret++;
 449                 continue;
 450             } else
 451                 r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 452                           siglen, sig_name, md_name, argv[i], bmd);
 453             if (r)
 454                 ret = r;
 455             (void)BIO_reset(bmd);
 456         }
 457     }
 458  end:
 459     if (buf != NULL) {
 460         OPENSSL_cleanse(buf, BUFSIZE);
 461         OPENSSL_free(buf);
 462     }
 463     BIO_free(in);
 464     if (passin)
 465         OPENSSL_free(passin);
 466     BIO_free_all(out);
 467     EVP_PKEY_free(sigkey);
 468     if (sigopts)
 469         sk_OPENSSL_STRING_free(sigopts);
 470     if (macopts)
 471         sk_OPENSSL_STRING_free(macopts);
 472     if (sigbuf)
 473         OPENSSL_free(sigbuf);
 474     BIO_free(bmd);
 475     return (ret);
 476 }
 477
 478 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 479           EVP_PKEY *key, unsigned char *sigin, int siglen,
 480           const char *sig_name, const char *md_name,
 481           const char *file, BIO *bmd)
 482 {
 483     size_t len;
 484     int i;
 485
 486     for (;;) {
 487         i = BIO_read(bp, (char *)buf, BUFSIZE);
 488         if (i < 0) {
 489             BIO_printf(bio_err, "Read Error in %s\n", file);
 490             ERR_print_errors(bio_err);
 491             return 1;
 492         }
 493         if (i == 0)
 494             break;
 495     }
 496     if (sigin) {
 497         EVP_MD_CTX *ctx;
 498         BIO_get_md_ctx(bp, &ctx);
 499         i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 500         if (i > 0)
 501             BIO_printf(out, "Verified OK\n");
 502         else if (i == 0) {
 503             BIO_printf(out, "Verification Failure\n");
 504             return 1;
 505         } else {
 506             BIO_printf(bio_err, "Error Verifying Data\n");
 507             ERR_print_errors(bio_err);
 508             return 1;
 509         }
 510         return 0;
 511     }
 512     if (key) {
 513         EVP_MD_CTX *ctx;
 514         BIO_get_md_ctx(bp, &ctx);
 515         len = BUFSIZE;
 516         if (!EVP_DigestSignFinal(ctx, buf, &len)) {
 517             BIO_printf(bio_err, "Error Signing Data\n");
 518             ERR_print_errors(bio_err);
 519             return 1;
 520         }
 521     } else {
 522         len = BIO_gets(bp, (char *)buf, BUFSIZE);
 523         if ((int)len < 0) {
 524             ERR_print_errors(bio_err);
 525             return 1;
 526         }
 527     }
 528
 529     if (binout)
 530         BIO_write(out, buf, len);
 531     else if (sep == 2) {
 532         for (i = 0; i < (int)len; i++)
 533             BIO_printf(out, "%02x", buf[i]);
 534         BIO_printf(out, " *%s\n", file);
 535     } else {
 536         if (sig_name) {
 537             BIO_puts(out, sig_name);
 538             if (md_name)
 539                 BIO_printf(out, "-%s", md_name);
 540             BIO_printf(out, "(%s)= ", file);
 541         } else if (md_name)
 542             BIO_printf(out, "%s(%s)= ", md_name, file);
 543         else
 544             BIO_printf(out, "(%s)= ", file);
 545         for (i = 0; i < (int)len; i++) {
 546             if (sep && (i != 0))
 547                 BIO_printf(out, ":");
 548             BIO_printf(out, "%02x", buf[i]);
 549         }
 550         BIO_printf(out, "\n");
 551     }
 552     return 0;
 553 }