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_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     {"hmac", OPT_HMAC, 's', "Create hashed MAC with key"},
 110     {"mac", OPT_MAC, 's', "Create MAC (not neccessarily HMAC)"},
 111     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 112     {"macopt", OPT_MACOPT, 's', "MAC algorithm parameters in n:v form or key"},
 113     {"", OPT_DIGEST, '-', "Any supported digest"},
 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     {NULL}
 119 };
 120
 121 int dgst_main(int argc, char **argv)
 122 {
 123     BIO *in = NULL, *inp, *bmd = NULL, *out = NULL;
 124     ENGINE *e = NULL, *impl = NULL;
 125     EVP_PKEY *sigkey = NULL;
 126     STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
 127     char *hmac_key = NULL;
 128     char *mac_name = NULL;
 129     char *passinarg = NULL, *passin = NULL;
 130     const EVP_MD *md = NULL, *m;
 131     const char *outfile = NULL, *keyfile = NULL, *prog = NULL;
 132     const char *sigfile = NULL, *randfile = NULL;
 133     OPTION_CHOICE o;
 134     int separator = 0, debug = 0, keyform = FORMAT_PEM, siglen = 0;
 135     int i, ret = 1, out_bin = -1, want_pub = 0, do_verify = 0;
 136     unsigned char *buf = NULL, *sigbuf = NULL;
 137     int engine_impl = 0;
 138
 139     prog = opt_progname(argv[0]);
 140     buf = app_malloc(BUFSIZE, "I/O buffer");
 141     md = EVP_get_digestbyname(prog);
 142
 143     prog = opt_init(argc, argv, dgst_options);
 144     while ((o = opt_next()) != OPT_EOF) {
 145         switch (o) {
 146         case OPT_EOF:
 147         case OPT_ERR:
 148  opthelp:
 149             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 150             goto end;
 151         case OPT_HELP:
 152             opt_help(dgst_options);
 153             ret = 0;
 154             goto end;
 155         case OPT_C:
 156             separator = 1;
 157             break;
 158         case OPT_R:
 159             separator = 2;
 160             break;
 161         case OPT_RAND:
 162             randfile = opt_arg();
 163             break;
 164         case OPT_OUT:
 165             outfile = opt_arg();
 166             break;
 167         case OPT_SIGN:
 168             keyfile = opt_arg();
 169             break;
 170         case OPT_PASSIN:
 171             passinarg = opt_arg();
 172             break;
 173         case OPT_VERIFY:
 174             keyfile = opt_arg();
 175             want_pub = do_verify = 1;
 176             break;
 177         case OPT_PRVERIFY:
 178             keyfile = opt_arg();
 179             do_verify = 1;
 180             break;
 181         case OPT_SIGNATURE:
 182             sigfile = opt_arg();
 183             break;
 184         case OPT_KEYFORM:
 185             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 186                 goto opthelp;
 187             break;
 188         case OPT_ENGINE:
 189             e = setup_engine(opt_arg(), 0);
 190             break;
 191         case OPT_ENGINE_IMPL:
 192             engine_impl = 1;
 193             break;
 194         case OPT_HEX:
 195             out_bin = 0;
 196             break;
 197         case OPT_BINARY:
 198             out_bin = 1;
 199             break;
 200         case OPT_DEBUG:
 201             debug = 1;
 202             break;
 203         case OPT_FIPS_FINGERPRINT:
 204             hmac_key = "etaonrishdlcupfm";
 205             break;
 206         case OPT_HMAC:
 207             hmac_key = opt_arg();
 208             break;
 209         case OPT_MAC:
 210             mac_name = opt_arg();
 211             break;
 212         case OPT_SIGOPT:
 213             if (!sigopts)
 214                 sigopts = sk_OPENSSL_STRING_new_null();
 215             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 216                 goto opthelp;
 217             break;
 218         case OPT_MACOPT:
 219             if (!macopts)
 220                 macopts = sk_OPENSSL_STRING_new_null();
 221             if (!macopts || !sk_OPENSSL_STRING_push(macopts, opt_arg()))
 222                 goto opthelp;
 223             break;
 224         case OPT_DIGEST:
 225             if (!opt_md(opt_unknown(), &m))
 226                 goto opthelp;
 227             md = m;
 228             break;
 229         }
 230     }
 231     argc = opt_num_rest();
 232     argv = opt_rest();
 233
 234     if (do_verify && !sigfile) {
 235         BIO_printf(bio_err,
 236                    "No signature to verify: use the -signature option\n");
 237         goto end;
 238     }
 239     if (engine_impl)
 240         impl = e;
 241
 242     in = BIO_new(BIO_s_file());
 243     bmd = BIO_new(BIO_f_md());
 244     if ((in == NULL) || (bmd == NULL)) {
 245         ERR_print_errors(bio_err);
 246         goto end;
 247     }
 248
 249     if (debug) {
 250         BIO_set_callback(in, BIO_debug_callback);
 251         /* needed for windows 3.1 */
 252         BIO_set_callback_arg(in, (char *)bio_err);
 253     }
 254
 255     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 256         BIO_printf(bio_err, "Error getting password\n");
 257         goto end;
 258     }
 259
 260     if (out_bin == -1) {
 261         if (keyfile)
 262             out_bin = 1;
 263         else
 264             out_bin = 0;
 265     }
 266
 267     if (randfile)
 268         app_RAND_load_file(randfile, 0);
 269
 270     out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
 271     if (out == NULL)
 272         goto end;
 273
 274     if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) {
 275         BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 276         goto end;
 277     }
 278
 279     if (keyfile) {
 280         if (want_pub)
 281             sigkey = load_pubkey(keyfile, keyform, 0, NULL, e, "key file");
 282         else
 283             sigkey = load_key(keyfile, keyform, 0, passin, e, "key file");
 284         if (!sigkey) {
 285             /*
 286              * load_[pub]key() has already printed an appropriate message
 287              */
 288             goto end;
 289         }
 290     }
 291
 292     if (mac_name) {
 293         EVP_PKEY_CTX *mac_ctx = NULL;
 294         int r = 0;
 295         if (!init_gen_str(&mac_ctx, mac_name, impl, 0))
 296             goto mac_end;
 297         if (macopts) {
 298             char *macopt;
 299             for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
 300                 macopt = sk_OPENSSL_STRING_value(macopts, i);
 301                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
 302                     BIO_printf(bio_err,
 303                                "MAC parameter error \"%s\"\n", macopt);
 304                     ERR_print_errors(bio_err);
 305                     goto mac_end;
 306                 }
 307             }
 308         }
 309         if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
 310             BIO_puts(bio_err, "Error generating key\n");
 311             ERR_print_errors(bio_err);
 312             goto mac_end;
 313         }
 314         r = 1;
 315  mac_end:
 316         EVP_PKEY_CTX_free(mac_ctx);
 317         if (r == 0)
 318             goto end;
 319     }
 320
 321     if (hmac_key) {
 322         sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
 323                                       (unsigned char *)hmac_key, -1);
 324         if (!sigkey)
 325             goto end;
 326     }
 327
 328     if (sigkey) {
 329         EVP_MD_CTX *mctx = NULL;
 330         EVP_PKEY_CTX *pctx = NULL;
 331         int r;
 332         if (!BIO_get_md_ctx(bmd, &mctx)) {
 333             BIO_printf(bio_err, "Error getting context\n");
 334             ERR_print_errors(bio_err);
 335             goto end;
 336         }
 337         if (do_verify)
 338             r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
 339         else
 340             r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
 341         if (!r) {
 342             BIO_printf(bio_err, "Error setting context\n");
 343             ERR_print_errors(bio_err);
 344             goto end;
 345         }
 346         if (sigopts) {
 347             char *sigopt;
 348             for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
 349                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
 350                 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
 351                     BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
 352                     ERR_print_errors(bio_err);
 353                     goto end;
 354                 }
 355             }
 356         }
 357     }
 358     /* we use md as a filter, reading from 'in' */
 359     else {
 360         EVP_MD_CTX *mctx = NULL;
 361         if (!BIO_get_md_ctx(bmd, &mctx)) {
 362             BIO_printf(bio_err, "Error getting context\n");
 363             ERR_print_errors(bio_err);
 364             goto end;
 365         }
 366         if (md == NULL)
 367             md = EVP_sha256();
 368         if (!EVP_DigestInit_ex(mctx, md, impl)) {
 369             BIO_printf(bio_err, "Error setting digest\n");
 370             ERR_print_errors(bio_err);
 371             goto end;
 372         }
 373     }
 374
 375     if (sigfile && sigkey) {
 376         BIO *sigbio = BIO_new_file(sigfile, "rb");
 377         if (!sigbio) {
 378             BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
 379             ERR_print_errors(bio_err);
 380             goto end;
 381         }
 382         siglen = EVP_PKEY_size(sigkey);
 383         sigbuf = app_malloc(siglen, "signature buffer");
 384         siglen = BIO_read(sigbio, sigbuf, siglen);
 385         BIO_free(sigbio);
 386         if (siglen <= 0) {
 387             BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
 388             ERR_print_errors(bio_err);
 389             goto end;
 390         }
 391     }
 392     inp = BIO_push(bmd, in);
 393
 394     if (md == NULL) {
 395         EVP_MD_CTX *tctx;
 396         BIO_get_md_ctx(bmd, &tctx);
 397         md = EVP_MD_CTX_md(tctx);
 398     }
 399
 400     if (argc == 0) {
 401         BIO_set_fp(in, stdin, BIO_NOCLOSE);
 402         ret = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 403                     siglen, NULL, NULL, "stdin", bmd);
 404     } else {
 405         const char *md_name = NULL, *sig_name = NULL;
 406         if (!out_bin) {
 407             if (sigkey) {
 408                 const EVP_PKEY_ASN1_METHOD *ameth;
 409                 ameth = EVP_PKEY_get0_asn1(sigkey);
 410                 if (ameth)
 411                     EVP_PKEY_asn1_get0_info(NULL, NULL,
 412                                             NULL, NULL, &sig_name, ameth);
 413             }
 414             if (md)
 415                 md_name = EVP_MD_name(md);
 416         }
 417         ret = 0;
 418         for (i = 0; i < argc; i++) {
 419             int r;
 420             if (BIO_read_filename(in, argv[i]) <= 0) {
 421                 perror(argv[i]);
 422                 ret++;
 423                 continue;
 424             } else
 425                 r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 426                           siglen, sig_name, md_name, argv[i], bmd);
 427             if (r)
 428                 ret = r;
 429             (void)BIO_reset(bmd);
 430         }
 431     }
 432  end:
 433     OPENSSL_clear_free(buf, BUFSIZE);
 434     BIO_free(in);
 435     OPENSSL_free(passin);
 436     BIO_free_all(out);
 437     EVP_PKEY_free(sigkey);
 438     sk_OPENSSL_STRING_free(sigopts);
 439     sk_OPENSSL_STRING_free(macopts);
 440     OPENSSL_free(sigbuf);
 441     BIO_free(bmd);
 442     return (ret);
 443 }
 444
 445 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 446           EVP_PKEY *key, unsigned char *sigin, int siglen,
 447           const char *sig_name, const char *md_name,
 448           const char *file, BIO *bmd)
 449 {
 450     size_t len;
 451     int i;
 452
 453     for (;;) {
 454         i = BIO_read(bp, (char *)buf, BUFSIZE);
 455         if (i < 0) {
 456             BIO_printf(bio_err, "Read Error in %s\n", file);
 457             ERR_print_errors(bio_err);
 458             return 1;
 459         }
 460         if (i == 0)
 461             break;
 462     }
 463     if (sigin) {
 464         EVP_MD_CTX *ctx;
 465         BIO_get_md_ctx(bp, &ctx);
 466         i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 467         if (i > 0)
 468             BIO_printf(out, "Verified OK\n");
 469         else if (i == 0) {
 470             BIO_printf(out, "Verification Failure\n");
 471             return 1;
 472         } else {
 473             BIO_printf(bio_err, "Error Verifying Data\n");
 474             ERR_print_errors(bio_err);
 475             return 1;
 476         }
 477         return 0;
 478     }
 479     if (key) {
 480         EVP_MD_CTX *ctx;
 481         BIO_get_md_ctx(bp, &ctx);
 482         len = BUFSIZE;
 483         if (!EVP_DigestSignFinal(ctx, buf, &len)) {
 484             BIO_printf(bio_err, "Error Signing Data\n");
 485             ERR_print_errors(bio_err);
 486             return 1;
 487         }
 488     } else {
 489         len = BIO_gets(bp, (char *)buf, BUFSIZE);
 490         if ((int)len < 0) {
 491             ERR_print_errors(bio_err);
 492             return 1;
 493         }
 494     }
 495
 496     if (binout)
 497         BIO_write(out, buf, len);
 498     else if (sep == 2) {
 499         for (i = 0; i < (int)len; i++)
 500             BIO_printf(out, "%02x", buf[i]);
 501         BIO_printf(out, " *%s\n", file);
 502     } else {
 503         if (sig_name) {
 504             BIO_puts(out, sig_name);
 505             if (md_name)
 506                 BIO_printf(out, "-%s", md_name);
 507             BIO_printf(out, "(%s)= ", file);
 508         } else if (md_name)
 509             BIO_printf(out, "%s(%s)= ", md_name, file);
 510         else
 511             BIO_printf(out, "(%s)= ", file);
 512         for (i = 0; i < (int)len; i++) {
 513             if (sep && (i != 0))
 514                 BIO_printf(out, ":");
 515             BIO_printf(out, "%02x", buf[i]);
 516         }
 517         BIO_printf(out, "\n");
 518     }
 519     return 0;
 520 }