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, *impl = 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         int engine_impl = 0;
 128 #endif
 129         char *hmac_key=NULL;
 130         char *mac_name=NULL;
 131         int non_fips_allow = 0;
 132         STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
 133
 134         apps_startup();
 135
 136         if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
 137                 {
 138                 BIO_printf(bio_err,"out of memory\n");
 139                 goto end;
 140                 }
 141         if (bio_err == NULL)
 142                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 143                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 144
 145         if (!load_config(bio_err, NULL))
 146                 goto end;
 147
 148         /* first check the program name */
 149         program_name(argv[0],pname,sizeof pname);
 150
 151         md=EVP_get_digestbyname(pname);
 152
 153         argc--;
 154         argv++;
 155         while (argc > 0)
 156                 {
 157                 if ((*argv)[0] != '-') break;
 158                 if (strcmp(*argv,"-c") == 0)
 159                         separator=1;
 160                 else if (strcmp(*argv,"-r") == 0)
 161                         separator=2;
 162                 else if (strcmp(*argv,"-rand") == 0)
 163                         {
 164                         if (--argc < 1) break;
 165                         randfile=*(++argv);
 166                         }
 167                 else if (strcmp(*argv,"-out") == 0)
 168                         {
 169                         if (--argc < 1) break;
 170                         outfile=*(++argv);
 171                         }
 172                 else if (strcmp(*argv,"-sign") == 0)
 173                         {
 174                         if (--argc < 1) break;
 175                         keyfile=*(++argv);
 176                         }
 177                 else if (!strcmp(*argv,"-passin"))
 178                         {
 179                         if (--argc < 1)
 180                                 break;
 181                         passargin=*++argv;
 182                         }
 183                 else if (strcmp(*argv,"-verify") == 0)
 184                         {
 185                         if (--argc < 1) break;
 186                         keyfile=*(++argv);
 187                         want_pub = 1;
 188                         do_verify = 1;
 189                         }
 190                 else if (strcmp(*argv,"-prverify") == 0)
 191                         {
 192                         if (--argc < 1) break;
 193                         keyfile=*(++argv);
 194                         do_verify = 1;
 195                         }
 196                 else if (strcmp(*argv,"-signature") == 0)
 197                         {
 198                         if (--argc < 1) break;
 199                         sigfile=*(++argv);
 200                         }
 201                 else if (strcmp(*argv,"-keyform") == 0)
 202                         {
 203                         if (--argc < 1) break;
 204                         keyform=str2fmt(*(++argv));
 205                         }
 206 #ifndef OPENSSL_NO_ENGINE
 207                 else if (strcmp(*argv,"-engine") == 0)
 208                         {
 209                         if (--argc < 1) break;
 210                         engine= *(++argv);
 211                         e = setup_engine(bio_err, engine, 0);
 212                         }
 213                 else if (strcmp(*argv,"-engine_impl") == 0)
 214                         engine_impl = 1;
 215 #endif
 216                 else if (strcmp(*argv,"-hex") == 0)
 217                         out_bin = 0;
 218                 else if (strcmp(*argv,"-binary") == 0)
 219                         out_bin = 1;
 220                 else if (strcmp(*argv,"-d") == 0)
 221                         debug=1;
 222                 else if (!strcmp(*argv,"-fips-fingerprint"))
 223                         hmac_key = "etaonrishdlcupfm";
 224                 else if (strcmp(*argv,"-non-fips-allow") == 0)
 225                         non_fips_allow=1;
 226                 else if (!strcmp(*argv,"-hmac"))
 227                         {
 228                         if (--argc < 1)
 229                                 break;
 230                         hmac_key=*++argv;
 231                         }
 232                 else if (!strcmp(*argv,"-mac"))
 233                         {
 234                         if (--argc < 1)
 235                                 break;
 236                         mac_name=*++argv;
 237                         }
 238                 else if (strcmp(*argv,"-sigopt") == 0)
 239                         {
 240                         if (--argc < 1)
 241                                 break;
 242                         if (!sigopts)
 243                                 sigopts = sk_OPENSSL_STRING_new_null();
 244                         if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
 245                                 break;
 246                         }
 247                 else if (strcmp(*argv,"-macopt") == 0)
 248                         {
 249                         if (--argc < 1)
 250                                 break;
 251                         if (!macopts)
 252                                 macopts = sk_OPENSSL_STRING_new_null();
 253                         if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
 254                                 break;
 255                         }
 256                 else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
 257                         md=m;
 258                 else
 259                         break;
 260                 argc--;
 261                 argv++;
 262                 }
 263
 264
 265         if(do_verify && !sigfile) {
 266                 BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
 267                 goto end;
 268         }
 269
 270         if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
 271                 {
 272                 BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 273                 BIO_printf(bio_err,"options are\n");
 274                 BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
 275                 BIO_printf(bio_err,"-r              to output the digest in coreutils format\n");
 276                 BIO_printf(bio_err,"-d              to output debug info\n");
 277                 BIO_printf(bio_err,"-hex            output as hex dump\n");
 278                 BIO_printf(bio_err,"-binary         output in binary form\n");
 279                 BIO_printf(bio_err,"-hmac arg       set the HMAC key to arg\n");
 280                 BIO_printf(bio_err,"-non-fips-allow allow use of non FIPS digest\n");
 281                 BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
 282                 BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
 283                 BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
 284                 BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\n");
 285                 BIO_printf(bio_err,"-out filename   output to filename rather than stdout\n");
 286                 BIO_printf(bio_err,"-signature file signature to verify\n");
 287                 BIO_printf(bio_err,"-sigopt nm:v    signature parameter\n");
 288                 BIO_printf(bio_err,"-hmac key       create hashed MAC with key\n");
 289                 BIO_printf(bio_err,"-mac algorithm  create MAC (not neccessarily HMAC)\n");
 290                 BIO_printf(bio_err,"-macopt nm:v    MAC algorithm parameters or key\n");
 291 #ifndef OPENSSL_NO_ENGINE
 292                 BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
 293 #endif
 294
 295                 EVP_MD_do_all_sorted(list_md_fn, bio_err);
 296                 goto end;
 297                 }
 298
 299 #ifndef OPENSSL_NO_ENGINE
 300         if (engine_impl)
 301                 impl = e;
 302 #endif
 303
 304         in=BIO_new(BIO_s_file());
 305         bmd=BIO_new(BIO_f_md());
 306         if (debug)
 307                 {
 308                 BIO_set_callback(in,BIO_debug_callback);
 309                 /* needed for windows 3.1 */
 310                 BIO_set_callback_arg(in,(char *)bio_err);
 311                 }
 312
 313         if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
 314                 {
 315                 BIO_printf(bio_err, "Error getting password\n");
 316                 goto end;
 317                 }
 318
 319         if ((in == NULL) || (bmd == NULL))
 320                 {
 321                 ERR_print_errors(bio_err);
 322                 goto end;
 323                 }
 324
 325         if(out_bin == -1) {
 326                 if(keyfile)
 327                         out_bin = 1;
 328                 else
 329                         out_bin = 0;
 330         }
 331
 332         if(randfile)
 333                 app_RAND_load_file(randfile, bio_err, 0);
 334
 335         if(outfile) {
 336                 if(out_bin)
 337                         out = BIO_new_file(outfile, "wb");
 338                 else    out = BIO_new_file(outfile, "w");
 339         } else {
 340                 out = BIO_new_fp(stdout, BIO_NOCLOSE);
 341 #ifdef OPENSSL_SYS_VMS
 342                 {
 343                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 344                 out = BIO_push(tmpbio, out);
 345                 }
 346 #endif
 347         }
 348
 349         if(!out) {
 350                 BIO_printf(bio_err, "Error opening output file %s\n",
 351                                         outfile ? outfile : "(stdout)");
 352                 ERR_print_errors(bio_err);
 353                 goto end;
 354         }
 355         if ((!!mac_name + !!keyfile + !!hmac_key) > 1)
 356                 {
 357                 BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
 358                 goto end;
 359                 }
 360
 361         if(keyfile)
 362                 {
 363                 if (want_pub)
 364                         sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
 365                                 e, "key file");
 366                 else
 367                         sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
 368                                 e, "key file");
 369                 if (!sigkey)
 370                         {
 371                         /* load_[pub]key() has already printed an appropriate
 372                            message */
 373                         goto end;
 374                         }
 375                 }
 376
 377         if (mac_name)
 378                 {
 379                 EVP_PKEY_CTX *mac_ctx = NULL;
 380                 int r = 0;
 381                 if (!init_gen_str(bio_err, &mac_ctx, mac_name, impl, 0))
 382                         goto mac_end;
 383                 if (macopts)
 384                         {
 385                         char *macopt;
 386                         for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++)
 387                                 {
 388                                 macopt = sk_OPENSSL_STRING_value(macopts, i);
 389                                 if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
 390                                         {
 391                                         BIO_printf(bio_err,
 392                                                 "MAC parameter error \"%s\"\n",
 393                                                 macopt);
 394                                         ERR_print_errors(bio_err);
 395                                         goto mac_end;
 396                                         }
 397                                 }
 398                         }
 399                 if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
 400                         {
 401                         BIO_puts(bio_err, "Error generating key\n");
 402                         ERR_print_errors(bio_err);
 403                         goto mac_end;
 404                         }
 405                 r = 1;
 406                 mac_end:
 407                 if (mac_ctx)
 408                         EVP_PKEY_CTX_free(mac_ctx);
 409                 if (r == 0)
 410                         goto end;
 411                 }
 412
 413         if (non_fips_allow)
 414                 {
 415                 EVP_MD_CTX *md_ctx;
 416                 BIO_get_md_ctx(bmd,&md_ctx);
 417                 EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 418                 }
 419
 420         if (hmac_key)
 421                 {
 422                 sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
 423                                         (unsigned char *)hmac_key, -1);
 424                 if (!sigkey)
 425                         goto end;
 426                 }
 427
 428         if (sigkey)
 429                 {
 430                 EVP_MD_CTX *mctx = NULL;
 431                 EVP_PKEY_CTX *pctx = NULL;
 432                 int r;
 433                 if (!BIO_get_md_ctx(bmd, &mctx))
 434                         {
 435                         BIO_printf(bio_err, "Error getting context\n");
 436                         ERR_print_errors(bio_err);
 437                         goto end;
 438                         }
 439                 if (do_verify)
 440                         r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
 441                 else
 442                         r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
 443                 if (!r)
 444                         {
 445                         BIO_printf(bio_err, "Error setting context\n");
 446                         ERR_print_errors(bio_err);
 447                         goto end;
 448                         }
 449                 if (sigopts)
 450                         {
 451                         char *sigopt;
 452                         for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++)
 453                                 {
 454                                 sigopt = sk_OPENSSL_STRING_value(sigopts, i);
 455                                 if (pkey_ctrl_string(pctx, sigopt) <= 0)
 456                                         {
 457                                         BIO_printf(bio_err,
 458                                                 "parameter error \"%s\"\n",
 459                                                 sigopt);
 460                                         ERR_print_errors(bio_err);
 461                                         goto end;
 462                                         }
 463                                 }
 464                         }
 465                 }
 466         /* we use md as a filter, reading from 'in' */
 467         else
 468                 {
 469                 EVP_MD_CTX *mctx = NULL;
 470                 if (!BIO_get_md_ctx(bmd, &mctx))
 471                         {
 472                         BIO_printf(bio_err, "Error getting context\n");
 473                         ERR_print_errors(bio_err);
 474                         goto end;
 475                         }
 476                 if (md == NULL)
 477                         md = EVP_md5();
 478                 if (!EVP_DigestInit_ex(mctx, md, impl))
 479                         {
 480                         BIO_printf(bio_err, "Error setting digest %s\n", pname);
 481                         ERR_print_errors(bio_err);
 482                         goto end;
 483                         }
 484                 }
 485
 486         if(sigfile && sigkey) {
 487                 BIO *sigbio;
 488                 sigbio = BIO_new_file(sigfile, "rb");
 489                 siglen = EVP_PKEY_size(sigkey);
 490                 sigbuf = OPENSSL_malloc(siglen);
 491                 if(!sigbio) {
 492                         BIO_printf(bio_err, "Error opening signature file %s\n",
 493                                                                 sigfile);
 494                         ERR_print_errors(bio_err);
 495                         goto end;
 496                 }
 497                 siglen = BIO_read(sigbio, sigbuf, siglen);
 498                 BIO_free(sigbio);
 499                 if(siglen <= 0) {
 500                         BIO_printf(bio_err, "Error reading signature file %s\n",
 501                                                                 sigfile);
 502                         ERR_print_errors(bio_err);
 503                         goto end;
 504                 }
 505         }
 506         inp=BIO_push(bmd,in);
 507
 508         if (md == NULL)
 509                 {
 510                 EVP_MD_CTX *tctx;
 511                 BIO_get_md_ctx(bmd, &tctx);
 512                 md = EVP_MD_CTX_md(tctx);
 513                 }
 514
 515         if (argc == 0)
 516                 {
 517                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 518                 err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
 519                           siglen,NULL,NULL,"stdin",bmd);
 520                 }
 521         else
 522                 {
 523                 const char *md_name = NULL, *sig_name = NULL;
 524                 if(!out_bin)
 525                         {
 526                         if (sigkey)
 527                                 {
 528                                 const EVP_PKEY_ASN1_METHOD *ameth;
 529                                 ameth = EVP_PKEY_get0_asn1(sigkey);
 530                                 if (ameth)
 531                                         EVP_PKEY_asn1_get0_info(NULL, NULL,
 532                                                 NULL, NULL, &sig_name, ameth);
 533                                 }
 534                         if (md)
 535                                 md_name = EVP_MD_name(md);
 536                         }
 537                 err = 0;
 538                 for (i=0; i<argc; i++)
 539                         {
 540                         int r;
 541                         if (BIO_read_filename(in,argv[i]) <= 0)
 542                                 {
 543                                 perror(argv[i]);
 544                                 err++;
 545                                 continue;
 546                                 }
 547                         else
 548                         r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
 549                                 siglen,sig_name,md_name, argv[i],bmd);
 550                         if(r)
 551                             err=r;
 552                         (void)BIO_reset(bmd);
 553                         }
 554                 }
 555 end:
 556         if (buf != NULL)
 557                 {
 558                 OPENSSL_cleanse(buf,BUFSIZE);
 559                 OPENSSL_free(buf);
 560                 }
 561         if (in != NULL) BIO_free(in);
 562         if (passin)
 563                 OPENSSL_free(passin);
 564         BIO_free_all(out);
 565         EVP_PKEY_free(sigkey);
 566         if (sigopts)
 567                 sk_OPENSSL_STRING_free(sigopts);
 568         if (macopts)
 569                 sk_OPENSSL_STRING_free(macopts);
 570         if(sigbuf) OPENSSL_free(sigbuf);
 571         if (bmd != NULL) BIO_free(bmd);
 572         apps_shutdown();
 573         OPENSSL_EXIT(err);
 574         }
 575
 576 int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
 577           EVP_PKEY *key, unsigned char *sigin, int siglen,
 578           const char *sig_name, const char *md_name,
 579           const char *file,BIO *bmd)
 580         {
 581         size_t len;
 582         int i;
 583
 584         for (;;)
 585                 {
 586                 i=BIO_read(bp,(char *)buf,BUFSIZE);
 587                 if(i < 0)
 588                         {
 589                         BIO_printf(bio_err, "Read Error in %s\n",file);
 590                         ERR_print_errors(bio_err);
 591                         return 1;
 592                         }
 593                 if (i == 0) break;
 594                 }
 595         if(sigin)
 596                 {
 597                 EVP_MD_CTX *ctx;
 598                 BIO_get_md_ctx(bp, &ctx);
 599                 i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen);
 600                 if(i > 0)
 601                         BIO_printf(out, "Verified OK\n");
 602                 else if(i == 0)
 603                         {
 604                         BIO_printf(out, "Verification Failure\n");
 605                         return 1;
 606                         }
 607                 else
 608                         {
 609                         BIO_printf(bio_err, "Error Verifying Data\n");
 610                         ERR_print_errors(bio_err);
 611                         return 1;
 612                         }
 613                 return 0;
 614                 }
 615         if(key)
 616                 {
 617                 EVP_MD_CTX *ctx;
 618                 BIO_get_md_ctx(bp, &ctx);
 619                 len = BUFSIZE;
 620                 if(!EVP_DigestSignFinal(ctx, buf, &len))
 621                         {
 622                         BIO_printf(bio_err, "Error Signing Data\n");
 623                         ERR_print_errors(bio_err);
 624                         return 1;
 625                         }
 626                 }
 627         else
 628                 {
 629                 len=BIO_gets(bp,(char *)buf,BUFSIZE);
 630                 if ((int)len <0)
 631                         {
 632                         ERR_print_errors(bio_err);
 633                         return 1;
 634                         }
 635                 }
 636
 637         if(binout) BIO_write(out, buf, len);
 638         else if (sep == 2)
 639                 {
 640                 for (i=0; i<(int)len; i++)
 641                         BIO_printf(out, "%02x",buf[i]);
 642                 BIO_printf(out, " *%s\n", file);
 643                 }
 644         else
 645                 {
 646                 if (sig_name)
 647                         {
 648                         BIO_puts(out, sig_name);
 649                         if (md_name)
 650                                 BIO_printf(out, "-%s", md_name);
 651                         BIO_printf(out, "(%s)= ", file);
 652                         }
 653                 else if (md_name)
 654                         BIO_printf(out, "%s(%s)= ", md_name, file);
 655                 else
 656                         BIO_printf(out, "(%s)= ", file);
 657                 for (i=0; i<(int)len; i++)
 658                         {
 659                         if (sep && (i != 0))
 660                                 BIO_printf(out, ":");
 661                         BIO_printf(out, "%02x",buf[i]);
 662                         }
 663                 BIO_printf(out, "\n");
 664                 }
 665         return 0;
 666         }
 667