apps/dgst.c

   1 /* apps/dgst.c */
   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 <string.h>
  61 #include <stdlib.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/evp.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/pem.h>
  69 #include <openssl/hmac.h>
  70
  71 #undef BUFSIZE
  72 #define BUFSIZE 1024*8
  73
  74 #undef PROG
  75 #define PROG    dgst_main
  76
  77 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
  78           EVP_PKEY *key, unsigned char *sigin, int siglen,
  79           const char *sig_name, const char *md_name,
  80           const char *file, BIO *bmd);
  81
  82 static void list_md_fn(const EVP_MD *m,
  83                        const char *from, const char *to, void *arg)
  84 {
  85     const char *mname;
  86     /* Skip aliases */
  87     if (!m)
  88         return;
  89     mname = OBJ_nid2ln(EVP_MD_type(m));
  90     /* Skip shortnames */
  91     if (strcmp(from, mname))
  92         return;
  93     /* Skip clones */
  94     if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST)
  95         return;
  96     if (strchr(mname, ' '))
  97         mname = EVP_MD_name(m);
  98     BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n",
  99                mname, mname);
 100 }
 101
 102 int MAIN(int, char **);
 103
 104 int MAIN(int argc, char **argv)
 105 {
 106     ENGINE *e = NULL;
 107     unsigned char *buf = NULL;
 108     int i, err = 1;
 109     const EVP_MD *md = NULL, *m;
 110     BIO *in = NULL, *inp;
 111     BIO *bmd = NULL;
 112     BIO *out = NULL;
 113 #define PROG_NAME_SIZE  39
 114     char pname[PROG_NAME_SIZE + 1];
 115     int separator = 0;
 116     int debug = 0;
 117     int keyform = FORMAT_PEM;
 118     const char *outfile = NULL, *keyfile = NULL;
 119     const char *sigfile = NULL, *randfile = NULL;
 120     int out_bin = -1, want_pub = 0, do_verify = 0;
 121     EVP_PKEY *sigkey = NULL;
 122     unsigned char *sigbuf = NULL;
 123     int siglen = 0;
 124     char *passargin = NULL, *passin = NULL;
 125 #ifndef OPENSSL_NO_ENGINE
 126     char *engine = NULL;
 127 #endif
 128     char *hmac_key = NULL;
 129     char *mac_name = NULL;
 130     int non_fips_allow = 0;
 131     STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
 132
 133     apps_startup();
 134
 135     if ((buf = (unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL) {
 136         BIO_printf(bio_err, "out of memory\n");
 137         goto end;
 138     }
 139     if (bio_err == NULL)
 140         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 141             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 142
 143     if (!load_config(bio_err, NULL))
 144         goto end;
 145
 146     /* first check the program name */
 147     program_name(argv[0], pname, sizeof pname);
 148
 149     md = EVP_get_digestbyname(pname);
 150
 151     argc--;
 152     argv++;
 153     while (argc > 0) {
 154         if ((*argv)[0] != '-')
 155             break;
 156         if (strcmp(*argv, "-c") == 0)
 157             separator = 1;
 158         else if (strcmp(*argv, "-r") == 0)
 159             separator = 2;
 160         else if (strcmp(*argv, "-rand") == 0) {
 161             if (--argc < 1)
 162                 break;
 163             randfile = *(++argv);
 164         } else if (strcmp(*argv, "-out") == 0) {
 165             if (--argc < 1)
 166                 break;
 167             outfile = *(++argv);
 168         } else if (strcmp(*argv, "-sign") == 0) {
 169             if (--argc < 1)
 170                 break;
 171             keyfile = *(++argv);
 172         } else if (!strcmp(*argv, "-passin")) {
 173             if (--argc < 1)
 174                 break;
 175             passargin = *++argv;
 176         } else if (strcmp(*argv, "-verify") == 0) {
 177             if (--argc < 1)
 178                 break;
 179             keyfile = *(++argv);
 180             want_pub = 1;
 181             do_verify = 1;
 182         } else if (strcmp(*argv, "-prverify") == 0) {
 183             if (--argc < 1)
 184                 break;
 185             keyfile = *(++argv);
 186             do_verify = 1;
 187         } else if (strcmp(*argv, "-signature") == 0) {
 188             if (--argc < 1)
 189                 break;
 190             sigfile = *(++argv);
 191         } else if (strcmp(*argv, "-keyform") == 0) {
 192             if (--argc < 1)
 193                 break;
 194             keyform = str2fmt(*(++argv));
 195         }
 196 #ifndef OPENSSL_NO_ENGINE
 197         else if (strcmp(*argv, "-engine") == 0) {
 198             if (--argc < 1)
 199                 break;
 200             engine = *(++argv);
 201             e = setup_engine(bio_err, engine, 0);
 202         }
 203 #endif
 204         else if (strcmp(*argv, "-hex") == 0)
 205             out_bin = 0;
 206         else if (strcmp(*argv, "-binary") == 0)
 207             out_bin = 1;
 208         else if (strcmp(*argv, "-d") == 0)
 209             debug = 1;
 210         else if (!strcmp(*argv, "-fips-fingerprint"))
 211             hmac_key = "etaonrishdlcupfm";
 212         else if (strcmp(*argv, "-non-fips-allow") == 0)
 213             non_fips_allow = 1;
 214         else if (!strcmp(*argv, "-hmac")) {
 215             if (--argc < 1)
 216                 break;
 217             hmac_key = *++argv;
 218         } else if (!strcmp(*argv, "-mac")) {
 219             if (--argc < 1)
 220                 break;
 221             mac_name = *++argv;
 222         } else if (strcmp(*argv, "-sigopt") == 0) {
 223             if (--argc < 1)
 224                 break;
 225             if (!sigopts)
 226                 sigopts = sk_OPENSSL_STRING_new_null();
 227             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
 228                 break;
 229         } else if (strcmp(*argv, "-macopt") == 0) {
 230             if (--argc < 1)
 231                 break;
 232             if (!macopts)
 233                 macopts = sk_OPENSSL_STRING_new_null();
 234             if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
 235                 break;
 236         } else if ((m = EVP_get_digestbyname(&((*argv)[1]))) != NULL)
 237             md = m;
 238         else
 239             break;
 240         argc--;
 241         argv++;
 242     }
 243
 244     if (do_verify && !sigfile) {
 245         BIO_printf(bio_err,
 246                    "No signature to verify: use the -signature option\n");
 247         goto end;
 248     }
 249
 250     if ((argc > 0) && (argv[0][0] == '-')) { /* bad option */
 251         BIO_printf(bio_err, "unknown option '%s'\n", *argv);
 252         BIO_printf(bio_err, "options are\n");
 253         BIO_printf(bio_err,
 254                    "-c              to output the digest with separating colons\n");
 255         BIO_printf(bio_err,
 256                    "-r              to output the digest in coreutils format\n");
 257         BIO_printf(bio_err, "-d              to output debug info\n");
 258         BIO_printf(bio_err, "-hex            output as hex dump\n");
 259         BIO_printf(bio_err, "-binary         output in binary form\n");
 260         BIO_printf(bio_err, "-hmac arg       set the HMAC key to arg\n");
 261         BIO_printf(bio_err, "-non-fips-allow allow use of non FIPS digest\n");
 262         BIO_printf(bio_err,
 263                    "-sign   file    sign digest using private key in file\n");
 264         BIO_printf(bio_err,
 265                    "-verify file    verify a signature using public key in file\n");
 266         BIO_printf(bio_err,
 267                    "-prverify file  verify a signature using private key in file\n");
 268         BIO_printf(bio_err,
 269                    "-keyform arg    key file format (PEM or ENGINE)\n");
 270         BIO_printf(bio_err,
 271                    "-out filename   output to filename rather than stdout\n");
 272         BIO_printf(bio_err, "-signature file signature to verify\n");
 273         BIO_printf(bio_err, "-sigopt nm:v    signature parameter\n");
 274         BIO_printf(bio_err, "-hmac key       create hashed MAC with key\n");
 275         BIO_printf(bio_err,
 276                    "-mac algorithm  create MAC (not neccessarily HMAC)\n");
 277         BIO_printf(bio_err,
 278                    "-macopt nm:v    MAC algorithm parameters or key\n");
 279 #ifndef OPENSSL_NO_ENGINE
 280         BIO_printf(bio_err,
 281                    "-engine e       use engine e, possibly a hardware device.\n");
 282 #endif
 283
 284         EVP_MD_do_all_sorted(list_md_fn, bio_err);
 285         goto end;
 286     }
 287
 288     in = BIO_new(BIO_s_file());
 289     bmd = BIO_new(BIO_f_md());
 290     if ((in == NULL) || (bmd == NULL)) {
 291         ERR_print_errors(bio_err);
 292         goto end;
 293     }
 294
 295     if (debug) {
 296         BIO_set_callback(in, BIO_debug_callback);
 297         /* needed for windows 3.1 */
 298         BIO_set_callback_arg(in, (char *)bio_err);
 299     }
 300
 301     if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
 302         BIO_printf(bio_err, "Error getting password\n");
 303         goto end;
 304     }
 305
 306     if (out_bin == -1) {
 307         if (keyfile)
 308             out_bin = 1;
 309         else
 310             out_bin = 0;
 311     }
 312
 313     if (randfile)
 314         app_RAND_load_file(randfile, bio_err, 0);
 315
 316     if (outfile) {
 317         if (out_bin)
 318             out = BIO_new_file(outfile, "wb");
 319         else
 320             out = BIO_new_file(outfile, "w");
 321     } else {
 322         out = BIO_new_fp(stdout, BIO_NOCLOSE);
 323 #ifdef OPENSSL_SYS_VMS
 324         {
 325             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 326             out = BIO_push(tmpbio, out);
 327         }
 328 #endif
 329     }
 330
 331     if (!out) {
 332         BIO_printf(bio_err, "Error opening output file %s\n",
 333                    outfile ? outfile : "(stdout)");
 334         ERR_print_errors(bio_err);
 335         goto end;
 336     }
 337     if ((! !mac_name + ! !keyfile + ! !hmac_key) > 1) {
 338         BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 339         goto end;
 340     }
 341
 342     if (keyfile) {
 343         if (want_pub)
 344             sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
 345                                  e, "key file");
 346         else
 347             sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
 348                               e, "key file");
 349         if (!sigkey) {
 350             /*
 351              * load_[pub]key() has already printed an appropriate message
 352              */
 353             goto end;
 354         }
 355     }
 356
 357     if (mac_name) {
 358         EVP_PKEY_CTX *mac_ctx = NULL;
 359         int r = 0;
 360         if (!init_gen_str(bio_err, &mac_ctx, mac_name, e, 0))
 361             goto mac_end;
 362         if (macopts) {
 363             char *macopt;
 364             for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++) {
 365                 macopt = sk_OPENSSL_STRING_value(macopts, i);
 366                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
 367                     BIO_printf(bio_err,
 368                                "MAC parameter error \"%s\"\n", macopt);
 369                     ERR_print_errors(bio_err);
 370                     goto mac_end;
 371                 }
 372             }
 373         }
 374         if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
 375             BIO_puts(bio_err, "Error generating key\n");
 376             ERR_print_errors(bio_err);
 377             goto mac_end;
 378         }
 379         r = 1;
 380  mac_end:
 381         if (mac_ctx)
 382             EVP_PKEY_CTX_free(mac_ctx);
 383         if (r == 0)
 384             goto end;
 385     }
 386
 387     if (non_fips_allow) {
 388         EVP_MD_CTX *md_ctx;
 389         BIO_get_md_ctx(bmd, &md_ctx);
 390         EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 391     }
 392
 393     if (hmac_key) {
 394         sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e,
 395                                       (unsigned char *)hmac_key, -1);
 396         if (!sigkey)
 397             goto end;
 398     }
 399
 400     if (sigkey) {
 401         EVP_MD_CTX *mctx = NULL;
 402         EVP_PKEY_CTX *pctx = NULL;
 403         int r;
 404         if (!BIO_get_md_ctx(bmd, &mctx)) {
 405             BIO_printf(bio_err, "Error getting context\n");
 406             ERR_print_errors(bio_err);
 407             goto end;
 408         }
 409         if (do_verify)
 410             r = EVP_DigestVerifyInit(mctx, &pctx, md, NULL, sigkey);
 411         else
 412             r = EVP_DigestSignInit(mctx, &pctx, md, NULL, sigkey);
 413         if (!r) {
 414             BIO_printf(bio_err, "Error setting context\n");
 415             ERR_print_errors(bio_err);
 416             goto end;
 417         }
 418         if (sigopts) {
 419             char *sigopt;
 420             for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
 421                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
 422                 if (pkey_ctrl_string(pctx, sigopt) <= 0) {
 423                     BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
 424                     ERR_print_errors(bio_err);
 425                     goto end;
 426                 }
 427             }
 428         }
 429     }
 430     /* we use md as a filter, reading from 'in' */
 431     else {
 432         if (md == NULL)
 433             md = EVP_md5();
 434         if (!BIO_set_md(bmd, md)) {
 435             BIO_printf(bio_err, "Error setting digest %s\n", pname);
 436             ERR_print_errors(bio_err);
 437             goto end;
 438         }
 439     }
 440
 441     if (sigfile && sigkey) {
 442         BIO *sigbio;
 443         sigbio = BIO_new_file(sigfile, "rb");
 444         siglen = EVP_PKEY_size(sigkey);
 445         sigbuf = OPENSSL_malloc(siglen);
 446         if (!sigbio) {
 447             BIO_printf(bio_err, "Error opening signature file %s\n", sigfile);
 448             ERR_print_errors(bio_err);
 449             goto end;
 450         }
 451         if (!sigbuf) {
 452             BIO_printf(bio_err, "Out of memory\n");
 453             ERR_print_errors(bio_err);
 454             goto end;
 455         }
 456         siglen = BIO_read(sigbio, sigbuf, siglen);
 457         BIO_free(sigbio);
 458         if (siglen <= 0) {
 459             BIO_printf(bio_err, "Error reading signature file %s\n", sigfile);
 460             ERR_print_errors(bio_err);
 461             goto end;
 462         }
 463     }
 464     inp = BIO_push(bmd, in);
 465
 466     if (md == NULL) {
 467         EVP_MD_CTX *tctx;
 468         BIO_get_md_ctx(bmd, &tctx);
 469         md = EVP_MD_CTX_md(tctx);
 470     }
 471
 472     if (argc == 0) {
 473         BIO_set_fp(in, stdin, BIO_NOCLOSE);
 474         err = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 475                     siglen, NULL, NULL, "stdin", bmd);
 476     } else {
 477         const char *md_name = NULL, *sig_name = NULL;
 478         if (!out_bin) {
 479             if (sigkey) {
 480                 const EVP_PKEY_ASN1_METHOD *ameth;
 481                 ameth = EVP_PKEY_get0_asn1(sigkey);
 482                 if (ameth)
 483                     EVP_PKEY_asn1_get0_info(NULL, NULL,
 484                                             NULL, NULL, &sig_name, ameth);
 485             }
 486             md_name = EVP_MD_name(md);
 487         }
 488         err = 0;
 489         for (i = 0; i < argc; i++) {
 490             int r;
 491             if (BIO_read_filename(in, argv[i]) <= 0) {
 492                 perror(argv[i]);
 493                 err++;
 494                 continue;
 495             } else
 496                 r = do_fp(out, buf, inp, separator, out_bin, sigkey, sigbuf,
 497                           siglen, sig_name, md_name, argv[i], bmd);
 498             if (r)
 499                 err = r;
 500             (void)BIO_reset(bmd);
 501         }
 502     }
 503  end:
 504     if (buf != NULL) {
 505         OPENSSL_cleanse(buf, BUFSIZE);
 506         OPENSSL_free(buf);
 507     }
 508     if (in != NULL)
 509         BIO_free(in);
 510     if (passin)
 511         OPENSSL_free(passin);
 512     BIO_free_all(out);
 513     EVP_PKEY_free(sigkey);
 514     if (sigopts)
 515         sk_OPENSSL_STRING_free(sigopts);
 516     if (macopts)
 517         sk_OPENSSL_STRING_free(macopts);
 518     if (sigbuf)
 519         OPENSSL_free(sigbuf);
 520     if (bmd != NULL)
 521         BIO_free(bmd);
 522     apps_shutdown();
 523     OPENSSL_EXIT(err);
 524 }
 525
 526 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 527           EVP_PKEY *key, unsigned char *sigin, int siglen,
 528           const char *sig_name, const char *md_name,
 529           const char *file, BIO *bmd)
 530 {
 531     size_t len;
 532     int i;
 533
 534     for (;;) {
 535         i = BIO_read(bp, (char *)buf, BUFSIZE);
 536         if (i < 0) {
 537             BIO_printf(bio_err, "Read Error in %s\n", file);
 538             ERR_print_errors(bio_err);
 539             return 1;
 540         }
 541         if (i == 0)
 542             break;
 543     }
 544     if (sigin) {
 545         EVP_MD_CTX *ctx;
 546         BIO_get_md_ctx(bp, &ctx);
 547         i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 548         if (i > 0)
 549             BIO_printf(out, "Verified OK\n");
 550         else if (i == 0) {
 551             BIO_printf(out, "Verification Failure\n");
 552             return 1;
 553         } else {
 554             BIO_printf(bio_err, "Error Verifying Data\n");
 555             ERR_print_errors(bio_err);
 556             return 1;
 557         }
 558         return 0;
 559     }
 560     if (key) {
 561         EVP_MD_CTX *ctx;
 562         BIO_get_md_ctx(bp, &ctx);
 563         len = BUFSIZE;
 564         if (!EVP_DigestSignFinal(ctx, buf, &len)) {
 565             BIO_printf(bio_err, "Error Signing Data\n");
 566             ERR_print_errors(bio_err);
 567             return 1;
 568         }
 569     } else {
 570         len = BIO_gets(bp, (char *)buf, BUFSIZE);
 571         if ((int)len < 0) {
 572             ERR_print_errors(bio_err);
 573             return 1;
 574         }
 575     }
 576
 577     if (binout)
 578         BIO_write(out, buf, len);
 579     else if (sep == 2) {
 580         for (i = 0; i < (int)len; i++)
 581             BIO_printf(out, "%02x", buf[i]);
 582         BIO_printf(out, " *%s\n", file);
 583     } else {
 584         if (sig_name)
 585             BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
 586         else if (md_name)
 587             BIO_printf(out, "%s(%s)= ", md_name, file);
 588         else
 589             BIO_printf(out, "(%s)= ", file);
 590         for (i = 0; i < (int)len; i++) {
 591             if (sep && (i != 0))
 592                 BIO_printf(out, ":");
 593             BIO_printf(out, "%02x", buf[i]);
 594         }
 595         BIO_printf(out, "\n");
 596     }
 597     return 0;
 598 }