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,"-out filename   output to filename rather than stdout\n");
 273                 BIO_printf(bio_err,"-signature file signature to verify\n");
 274                 BIO_printf(bio_err,"-sigopt nm:v    signature parameter\n");
 275                 BIO_printf(bio_err,"-hmac key       create hashed MAC with key\n");
 276                 BIO_printf(bio_err,"-mac algorithm  create MAC (not neccessarily HMAC)\n");
 277                 BIO_printf(bio_err,"-macopt nm:v    MAC algorithm parameters or key\n");
 278 #ifndef OPENSSL_NO_ENGINE
 279                 BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
 280 #endif
 281
 282                 EVP_MD_do_all_sorted(list_md_fn, bio_err);
 283                 goto end;
 284                 }
 285
 286         in=BIO_new(BIO_s_file());
 287         bmd=BIO_new(BIO_f_md());
 288         if (debug)
 289                 {
 290                 BIO_set_callback(in,BIO_debug_callback);
 291                 /* needed for windows 3.1 */
 292                 BIO_set_callback_arg(in,(char *)bio_err);
 293                 }
 294
 295         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 296                 {
 297                 BIO_printf(bio_err, "Error getting password\n");
 298                 goto end;
 299                 }
 300
 301         if ((in == NULL) || (bmd == NULL))
 302                 {
 303                 ERR_print_errors(bio_err);
 304                 goto end;
 305                 }
 306
 307         if(out_bin == -1) {
 308                 if(keyfile)
 309                         out_bin = 1;
 310                 else
 311                         out_bin = 0;
 312         }
 313
 314         if(randfile)
 315                 app_RAND_load_file(randfile, bio_err, 0);
 316
 317         if(outfile) {
 318                 if(out_bin)
 319                         out = BIO_new_file(outfile, "wb");
 320                 else    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                 {
 339                 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 340                 goto end;
 341                 }
 342
 343         if(keyfile)
 344                 {
 345                 if (want_pub)
 346                         sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
 347                                 e, "key file");
 348                 else
 349                         sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
 350                                 e, "key file");
 351                 if (!sigkey)
 352                         {
 353                         /* load_[pub]key() has already printed an appropriate
 354                            message */
 355                         goto end;
 356                         }
 357                 }
 358
 359         if (mac_name)
 360                 {
 361                 EVP_PKEY_CTX *mac_ctx = NULL;
 362                 int r = 0;
 363                 if (!init_gen_str(bio_err, &mac_ctx, mac_name,e, 0))
 364                         goto mac_end;
 365                 if (macopts)
 366                         {
 367                         char *macopt;
 368                         for (i = 0; i < sk_STRING_num(macopts); i++)
 369                                 {
 370                                 macopt = sk_STRING_value(macopts, i);
 371                                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
 372                                         {
 373                                         BIO_printf(bio_err,
 374                                                 "MAC parameter error \"%s\"\n",
 375                                                 macopt);
 376                                         ERR_print_errors(bio_err);
 377                                         goto mac_end;
 378                                         }
 379                                 }
 380                         }
 381                 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
 382                         {
 383                         BIO_puts(bio_err, "Error generating key\n");
 384                         ERR_print_errors(bio_err);
 385                         goto mac_end;
 386                         }
 387                 r = 1;
 388                 mac_end:
 389                 if (mac_ctx)
 390                         EVP_PKEY_CTX_free(mac_ctx);
 391                 if (r == 0)
 392                         goto end;
 393                 }
 394
 395         if (hmac_key)
 396                 {
 397                 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, e,
 398                                         (unsigned char *)hmac_key, -1);
 399                 if (!sigkey)
 400                         goto end;
 401                 }
 402
 403         if (sigkey)
 404                 {
 405                 EVP_MD_CTX *mctx = NULL;
 406                 EVP_PKEY_CTX *pctx = NULL;
 407                 int r;
 408                 if (!BIO_get_md_ctx(bmd, &mctx))
 409                         {
 410                         BIO_printf(bio_err, "Error getting context\n");
 411                         ERR_print_errors(bio_err);
 412                         goto end;
 413                         }
 414                 if (do_verify)
 415                         r = EVP_DigestVerifyInit(mctx, &pctx, md, e, sigkey);
 416                 else
 417                         r = EVP_DigestSignInit(mctx, &pctx, md, e, sigkey);
 418                 if (!r)
 419                         {
 420                         BIO_printf(bio_err, "Error setting context\n");
 421                         ERR_print_errors(bio_err);
 422                         goto end;
 423                         }
 424                 if (sigopts)
 425                         {
 426                         char *sigopt;
 427                         for (i = 0; i < sk_STRING_num(sigopts); i++)
 428                                 {
 429                                 sigopt = sk_STRING_value(sigopts, i);
 430                                 if (pkey_ctrl_string(pctx, sigopt) <= 0)
 431                                         {
 432                                         BIO_printf(bio_err,
 433                                                 "parameter error \"%s\"\n",
 434                                                 sigopt);
 435                                         ERR_print_errors(bio_err);
 436                                         goto end;
 437                                         }
 438                                 }
 439                         }
 440                 }
 441         /* we use md as a filter, reading from 'in' */
 442         else
 443                 {
 444                 if (md == NULL)
 445                         md = EVP_md5();
 446                 if (!BIO_set_md(bmd,md))
 447                         {
 448                         BIO_printf(bio_err, "Error setting digest %s\n", pname);
 449                         ERR_print_errors(bio_err);
 450                         goto end;
 451                         }
 452                 }
 453
 454         if(sigfile && sigkey) {
 455                 BIO *sigbio;
 456                 sigbio = BIO_new_file(sigfile, "rb");
 457                 siglen = EVP_PKEY_size(sigkey);
 458                 sigbuf = OPENSSL_malloc(siglen);
 459                 if(!sigbio) {
 460                         BIO_printf(bio_err, "Error opening signature file %s\n",
 461                                                                 sigfile);
 462                         ERR_print_errors(bio_err);
 463                         goto end;
 464                 }
 465                 siglen = BIO_read(sigbio, sigbuf, siglen);
 466                 BIO_free(sigbio);
 467                 if(siglen <= 0) {
 468                         BIO_printf(bio_err, "Error reading signature file %s\n",
 469                                                                 sigfile);
 470                         ERR_print_errors(bio_err);
 471                         goto end;
 472                 }
 473         }
 474         inp=BIO_push(bmd,in);
 475
 476         if (md == NULL)
 477                 {
 478                 EVP_MD_CTX *tctx;
 479                 BIO_get_md_ctx(bmd, &tctx);
 480                 md = EVP_MD_CTX_md(tctx);
 481                 }
 482
 483         if (argc == 0)
 484                 {
 485                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 486                 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
 487                           siglen,NULL,NULL,"stdin",bmd);
 488                 }
 489         else
 490                 {
 491                 const char *md_name = NULL, *sig_name = NULL;
 492                 if(!out_bin)
 493                         {
 494                         if (sigkey)
 495                                 {
 496                                 const EVP_PKEY_ASN1_METHOD *ameth;
 497                                 ameth = EVP_PKEY_get0_asn1(sigkey);
 498                                 if (ameth)
 499                                         EVP_PKEY_asn1_get0_info(NULL, NULL,
 500                                                 NULL, NULL, &sig_name, ameth);
 501                                 }
 502                         md_name = EVP_MD_name(md);
 503                         }
 504                 err = 0;
 505                 for (i=0; i<argc; i++)
 506                         {
 507                         int r;
 508                         if (BIO_read_filename(in,argv[i]) <= 0)
 509                                 {
 510                                 perror(argv[i]);
 511                                 err++;
 512                                 continue;
 513                                 }
 514                         else
 515                         r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
 516                                 siglen,sig_name,md_name, argv[i],bmd);
 517                         if(r)
 518                             err=r;
 519                         (void)BIO_reset(bmd);
 520                         }
 521                 }
 522 end:
 523         if (buf != NULL)
 524                 {
 525                 OPENSSL_cleanse(buf,BUFSIZE);
 526                 OPENSSL_free(buf);
 527                 }
 528         if (in != NULL) BIO_free(in);
 529         if (passin)
 530                 OPENSSL_free(passin);
 531         BIO_free_all(out);
 532         EVP_PKEY_free(sigkey);
 533         if (sigopts)
 534                 sk_STRING_free(sigopts);
 535         if (macopts)
 536                 sk_STRING_free(macopts);
 537         if(sigbuf) OPENSSL_free(sigbuf);
 538         if (bmd != NULL) BIO_free(bmd);
 539         apps_shutdown();
 540         OPENSSL_EXIT(err);
 541         }
 542
 543 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 544           EVP_PKEY *key, unsigned char *sigin, int siglen,
 545           const char *sig_name, const char *md_name,
 546           const char *file,BIO *bmd)
 547         {
 548         size_t len;
 549         int i;
 550
 551         for (;;)
 552                 {
 553                 i=BIO_read(bp,(char *)buf,BUFSIZE);
 554                 if(i < 0)
 555                         {
 556                         BIO_printf(bio_err, "Read Error in %s\n",file);
 557                         ERR_print_errors(bio_err);
 558                         return 1;
 559                         }
 560                 if (i == 0) break;
 561                 }
 562         if(sigin)
 563                 {
 564                 EVP_MD_CTX *ctx;
 565                 BIO_get_md_ctx(bp, &ctx);
 566                 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 567                 if(i > 0)
 568                         BIO_printf(out, "Verified OK\n");
 569                 else if(i == 0)
 570                         {
 571                         BIO_printf(out, "Verification Failure\n");
 572                         return 1;
 573                         }
 574                 else
 575                         {
 576                         BIO_printf(bio_err, "Error Verifying Data\n");
 577                         ERR_print_errors(bio_err);
 578                         return 1;
 579                         }
 580                 return 0;
 581                 }
 582         if(key)
 583                 {
 584                 EVP_MD_CTX *ctx;
 585                 BIO_get_md_ctx(bp, &ctx);
 586                 len = BUFSIZE;
 587                 if(!EVP_DigestSignFinal(ctx, buf, &len))
 588                         {
 589                         BIO_printf(bio_err, "Error Signing Data\n");
 590                         ERR_print_errors(bio_err);
 591                         return 1;
 592                         }
 593                 }
 594         else
 595                 {
 596                 len=BIO_gets(bp,(char *)buf,BUFSIZE);
 597                 if ((int)len <0)
 598                         {
 599                         ERR_print_errors(bio_err);
 600                         return 1;
 601                         }
 602                 }
 603
 604         if(binout) BIO_write(out, buf, len);
 605         else
 606                 {
 607                 if (sig_name)
 608                         BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
 609                 else if (md_name)
 610                         BIO_printf(out, "%s(%s)= ", md_name, file);
 611                 else
 612                         BIO_printf(out, "(%s)= ", file);
 613                 for (i=0; i<(int)len; i++)
 614                         {
 615                         if (sep && (i != 0))
 616                                 BIO_printf(out, ":");
 617                         BIO_printf(out, "%02x",buf[i]);
 618                         }
 619                 BIO_printf(out, "\n");
 620                 }
 621         return 0;
 622         }
 623