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