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