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         STACK_OF(STRING) *sigopts = NULL, *macopts = NULL;
 131
 132         apps_startup();
 133
 134         if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
 135                 {
 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                 {
 155                 if ((*argv)[0] != '-') break;
 156                 if (strcmp(*argv,"-c") == 0)
 157                         separator=1;
 158                 else if (strcmp(*argv,"-rand") == 0)
 159                         {
 160                         if (--argc < 1) break;
 161                         randfile=*(++argv);
 162                         }
 163                 else if (strcmp(*argv,"-out") == 0)
 164                         {
 165                         if (--argc < 1) break;
 166                         outfile=*(++argv);
 167                         }
 168                 else if (strcmp(*argv,"-sign") == 0)
 169                         {
 170                         if (--argc < 1) break;
 171                         keyfile=*(++argv);
 172                         }
 173                 else if (!strcmp(*argv,"-passin"))
 174                         {
 175                         if (--argc < 1)
 176                                 break;
 177                         passargin=*++argv;
 178                         }
 179                 else if (strcmp(*argv,"-verify") == 0)
 180                         {
 181                         if (--argc < 1) break;
 182                         keyfile=*(++argv);
 183                         want_pub = 1;
 184                         do_verify = 1;
 185                         }
 186                 else if (strcmp(*argv,"-prverify") == 0)
 187                         {
 188                         if (--argc < 1) break;
 189                         keyfile=*(++argv);
 190                         do_verify = 1;
 191                         }
 192                 else if (strcmp(*argv,"-signature") == 0)
 193                         {
 194                         if (--argc < 1) break;
 195                         sigfile=*(++argv);
 196                         }
 197                 else if (strcmp(*argv,"-keyform") == 0)
 198                         {
 199                         if (--argc < 1) break;
 200                         keyform=str2fmt(*(++argv));
 201                         }
 202 #ifndef OPENSSL_NO_ENGINE
 203                 else if (strcmp(*argv,"-engine") == 0)
 204                         {
 205                         if (--argc < 1) break;
 206                         engine= *(++argv);
 207                         e = setup_engine(bio_err, engine, 0);
 208                         }
 209 #endif
 210                 else if (strcmp(*argv,"-hex") == 0)
 211                         out_bin = 0;
 212                 else if (strcmp(*argv,"-binary") == 0)
 213                         out_bin = 1;
 214                 else if (strcmp(*argv,"-d") == 0)
 215                         debug=1;
 216                 else if (!strcmp(*argv,"-hmac"))
 217                         {
 218                         if (--argc < 1)
 219                                 break;
 220                         hmac_key=*++argv;
 221                         }
 222                 else if (!strcmp(*argv,"-mac"))
 223                         {
 224                         if (--argc < 1)
 225                                 break;
 226                         mac_name=*++argv;
 227                         }
 228                 else if (strcmp(*argv,"-sigopt") == 0)
 229                         {
 230                         if (--argc < 1)
 231                                 break;
 232                         if (!sigopts)
 233                                 sigopts = sk_STRING_new_null();
 234                         if (!sigopts || !sk_STRING_push(sigopts, *(++argv)))
 235                                 break;
 236                         }
 237                 else if (strcmp(*argv,"-macopt") == 0)
 238                         {
 239                         if (--argc < 1)
 240                                 break;
 241                         if (!macopts)
 242                                 macopts = sk_STRING_new_null();
 243                         if (!macopts || !sk_STRING_push(macopts, *(++argv)))
 244                                 break;
 245                         }
 246                 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
 247                         md=m;
 248                 else
 249                         break;
 250                 argc--;
 251                 argv++;
 252                 }
 253
 254
 255         if(do_verify && !sigfile) {
 256                 BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
 257                 goto end;
 258         }
 259
 260         if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
 261                 {
 262                 BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 263                 BIO_printf(bio_err,"options are\n");
 264                 BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
 265                 BIO_printf(bio_err,"-d              to output debug info\n");
 266                 BIO_printf(bio_err,"-hex            output as hex dump\n");
 267                 BIO_printf(bio_err,"-binary         output in binary form\n");
 268                 BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
 269                 BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
 270                 BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
 271                 BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\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 #ifndef OPENSSL_NO_ENGINE
 276                 BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
 277 #endif
 278
 279                 EVP_MD_do_all_sorted(list_md_fn, bio_err);
 280                 goto end;
 281                 }
 282
 283         in=BIO_new(BIO_s_file());
 284         bmd=BIO_new(BIO_f_md());
 285         if (debug)
 286                 {
 287                 BIO_set_callback(in,BIO_debug_callback);
 288                 /* needed for windows 3.1 */
 289                 BIO_set_callback_arg(in,(char *)bio_err);
 290                 }
 291
 292         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 293                 {
 294                 BIO_printf(bio_err, "Error getting password\n");
 295                 goto end;
 296                 }
 297
 298         if ((in == NULL) || (bmd == NULL))
 299                 {
 300                 ERR_print_errors(bio_err);
 301                 goto end;
 302                 }
 303
 304         if(out_bin == -1) {
 305                 if(keyfile)
 306                         out_bin = 1;
 307                 else
 308                         out_bin = 0;
 309         }
 310
 311         if(randfile)
 312                 app_RAND_load_file(randfile, bio_err, 0);
 313
 314         if(outfile) {
 315                 if(out_bin)
 316                         out = BIO_new_file(outfile, "wb");
 317                 else    out = BIO_new_file(outfile, "w");
 318         } else {
 319                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 320 #ifdef OPENSSL_SYS_VMS
 321                 {
 322                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 323                 out = BIO_push(tmpbio, out);
 324                 }
 325 #endif
 326         }
 327
 328         if(!out) {
 329                 BIO_printf(bio_err, "Error opening output file %s\n",
 330                                         outfile ? outfile : "(stdout)");
 331                 ERR_print_errors(bio_err);
 332                 goto end;
 333         }
 334         if ((!!mac_name + !!keyfile + !!hmac_key) > 1)
 335                 {
 336                 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 337                 goto end;
 338                 }
 339
 340         if(keyfile)
 341                 {
 342                 if (want_pub)
 343                         sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
 344                                 e, "key file");
 345                 else
 346                         sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
 347                                 e, "key file");
 348                 if (!sigkey)
 349                         {
 350                         /* load_[pub]key() has already printed an appropriate
 351                            message */
 352                         goto end;
 353                         }
 354                 }
 355
 356         if (mac_name)
 357                 {
 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                         {
 364                         char *macopt;
 365                         for (i = 0; i < sk_STRING_num(macopts); i++)
 366                                 {
 367                                 macopt = sk_STRING_value(macopts, i);
 368                                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
 369                                         {
 370                                         BIO_printf(bio_err,
 371                                                 "MAC parameter error \"%s\"\n",
 372                                                 macopt);
 373                                         ERR_print_errors(bio_err);
 374                                         goto mac_end;
 375                                         }
 376                                 }
 377                         }
 378                 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
 379                         {
 380                         BIO_puts(bio_err, "Error generating key\n");
 381                         ERR_print_errors(bio_err);
 382                         goto mac_end;
 383                         }
 384                 r = 1;
 385                 mac_end:
 386                 if (mac_ctx)
 387                         EVP_PKEY_CTX_free(mac_ctx);
 388                 if (r == 0)
 389                         goto end;
 390                 }
 391
 392         if (hmac_key)
 393                 {
 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                 {
 402                 EVP_MD_CTX *mctx = NULL;
 403                 EVP_PKEY_CTX *pctx = NULL;
 404                 int r;
 405                 if (!BIO_get_md_ctx(bmd, &mctx))
 406                         {
 407                         BIO_printf(bio_err, "Error getting context\n");
 408                         ERR_print_errors(bio_err);
 409                         goto end;
 410                         }
 411                 if (do_verify)
 412                         r = EVP_DigestVerifyInit(mctx, &pctx, md, e, sigkey);
 413                 else
 414                         r = EVP_DigestSignInit(mctx, &pctx, md, e, sigkey);
 415                 if (!r)
 416                         {
 417                         BIO_printf(bio_err, "Error setting context\n");
 418                         ERR_print_errors(bio_err);
 419                         goto end;
 420                         }
 421                 if (sigopts)
 422                         {
 423                         char *sigopt;
 424                         for (i = 0; i < sk_STRING_num(sigopts); i++)
 425                                 {
 426                                 sigopt = sk_STRING_value(sigopts, i);
 427                                 if (pkey_ctrl_string(pctx, sigopt) <= 0)
 428                                         {
 429                                         BIO_printf(bio_err,
 430                                                 "parameter error \"%s\"\n",
 431                                                 sigopt);
 432                                         ERR_print_errors(bio_err);
 433                                         goto end;
 434                                         }
 435                                 }
 436                         }
 437                 }
 438         /* we use md as a filter, reading from 'in' */
 439         else
 440                 {
 441                 if (md == NULL)
 442                         md = EVP_md5();
 443                 if (!BIO_set_md(bmd,md))
 444                         {
 445                         BIO_printf(bio_err, "Error setting digest %s\n", pname);
 446                         ERR_print_errors(bio_err);
 447                         goto end;
 448                         }
 449                 }
 450
 451         if(sigfile && sigkey) {
 452                 BIO *sigbio;
 453                 sigbio = BIO_new_file(sigfile, "rb");
 454                 siglen = EVP_PKEY_size(sigkey);
 455                 sigbuf = OPENSSL_malloc(siglen);
 456                 if(!sigbio) {
 457                         BIO_printf(bio_err, "Error opening signature file %s\n",
 458                                                                 sigfile);
 459                         ERR_print_errors(bio_err);
 460                         goto end;
 461                 }
 462                 siglen = BIO_read(sigbio, sigbuf, siglen);
 463                 BIO_free(sigbio);
 464                 if(siglen <= 0) {
 465                         BIO_printf(bio_err, "Error reading signature file %s\n",
 466                                                                 sigfile);
 467                         ERR_print_errors(bio_err);
 468                         goto end;
 469                 }
 470         }
 471         inp=BIO_push(bmd,in);
 472
 473         if (md == NULL)
 474                 {
 475                 EVP_MD_CTX *tctx;
 476                 BIO_get_md_ctx(bmd, &tctx);
 477                 md = EVP_MD_CTX_md(tctx);
 478                 }
 479
 480         if (argc == 0)
 481                 {
 482                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 483                 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
 484                           siglen,NULL,NULL,"stdin",bmd);
 485                 }
 486         else
 487                 {
 488                 const char *md_name = NULL, *sig_name = NULL;
 489                 if(!out_bin)
 490                         {
 491                         if (sigkey)
 492                                 {
 493                                 const EVP_PKEY_ASN1_METHOD *ameth;
 494                                 ameth = EVP_PKEY_get0_asn1(sigkey);
 495                                 if (ameth)
 496                                         EVP_PKEY_asn1_get0_info(NULL, NULL,
 497                                                 NULL, NULL, &sig_name, ameth);
 498                                 }
 499                         md_name = EVP_MD_name(md);
 500                         }
 501                 err = 0;
 502                 for (i=0; i<argc; i++)
 503                         {
 504                         int r;
 505                         if (BIO_read_filename(in,argv[i]) <= 0)
 506                                 {
 507                                 perror(argv[i]);
 508                                 err++;
 509                                 continue;
 510                                 }
 511                         else
 512                         r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
 513                                 siglen,sig_name,md_name, argv[i],bmd);
 514                         if(r)
 515                             err=r;
 516                         (void)BIO_reset(bmd);
 517                         }
 518                 }
 519 end:
 520         if (buf != NULL)
 521                 {
 522                 OPENSSL_cleanse(buf,BUFSIZE);
 523                 OPENSSL_free(buf);
 524                 }
 525         if (in != NULL) BIO_free(in);
 526         if (passin)
 527                 OPENSSL_free(passin);
 528         BIO_free_all(out);
 529         EVP_PKEY_free(sigkey);
 530         if (sigopts)
 531                 sk_STRING_free(sigopts);
 532         if (macopts)
 533                 sk_STRING_free(macopts);
 534         if(sigbuf) OPENSSL_free(sigbuf);
 535         if (bmd != NULL) BIO_free(bmd);
 536         apps_shutdown();
 537         OPENSSL_EXIT(err);
 538         }
 539
 540 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 541           EVP_PKEY *key, unsigned char *sigin, int siglen,
 542           const char *sig_name, const char *md_name,
 543           const char *file,BIO *bmd)
 544         {
 545         size_t len;
 546         int i;
 547
 548         for (;;)
 549                 {
 550                 i=BIO_read(bp,(char *)buf,BUFSIZE);
 551                 if(i < 0)
 552                         {
 553                         BIO_printf(bio_err, "Read Error in %s\n",file);
 554                         ERR_print_errors(bio_err);
 555                         return 1;
 556                         }
 557                 if (i == 0) break;
 558                 }
 559         if(sigin)
 560                 {
 561                 EVP_MD_CTX *ctx;
 562                 BIO_get_md_ctx(bp, &ctx);
 563                 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 564                 if(i > 0)
 565                         BIO_printf(out, "Verified OK\n");
 566                 else if(i == 0)
 567                         {
 568                         BIO_printf(out, "Verification Failure\n");
 569                         return 1;
 570                         }
 571                 else
 572                         {
 573                         BIO_printf(bio_err, "Error Verifying Data\n");
 574                         ERR_print_errors(bio_err);
 575                         return 1;
 576                         }
 577                 return 0;
 578                 }
 579         if(key)
 580                 {
 581                 EVP_MD_CTX *ctx;
 582                 BIO_get_md_ctx(bp, &ctx);
 583                 len = BUFSIZE;
 584                 if(!EVP_DigestSignFinal(ctx, buf, &len))
 585                         {
 586                         BIO_printf(bio_err, "Error Signing Data\n");
 587                         ERR_print_errors(bio_err);
 588                         return 1;
 589                         }
 590                 }
 591         else
 592                 {
 593                 len=BIO_gets(bp,(char *)buf,BUFSIZE);
 594                 if (len <0)
 595                         {
 596                         ERR_print_errors(bio_err);
 597                         return 1;
 598                         }
 599                 }
 600
 601         if(binout) BIO_write(out, buf, len);
 602         else
 603                 {
 604                 if (sig_name)
 605                         BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
 606                 else if (md_name)
 607                         BIO_printf(out, "%s(%s)= ", md_name, file);
 608                 else
 609                         BIO_printf(out, "(%s)= ", file);
 610                 for (i=0; i<(int)len; i++)
 611                         {
 612                         if (sep && (i != 0))
 613                                 BIO_printf(out, ":");
 614                         BIO_printf(out, "%02x",buf[i]);
 615                         }
 616                 BIO_printf(out, "\n");
 617                 }
 618         return 0;
 619         }
 620