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