apps/enc.c

   1 /* apps/enc.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 <stdlib.h>
  61 #include <string.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/rand.h>
  69 #ifndef NO_MD5
  70 #include <openssl/md5.h>
  71 #endif
  72 #include <openssl/pem.h>
  73
  74 int set_hex(char *in,unsigned char *out,int size);
  75 #undef SIZE
  76 #undef BSIZE
  77 #undef PROG
  78
  79 #define SIZE    (512)
  80 #define BSIZE   (8*1024)
  81 #define PROG    enc_main
  82
  83 int MAIN(int, char **);
  84
  85 int MAIN(int argc, char **argv)
  86         {
  87         static const char magic[]="Salted__";
  88         char mbuf[8];   /* should be 1 smaller than magic */
  89         char *strbuf=NULL;
  90         unsigned char *buff=NULL,*bufsize=NULL;
  91         int bsize=BSIZE,verbose=0;
  92         int ret=1,inl;
  93         unsigned char key[24],iv[MD5_DIGEST_LENGTH];
  94         unsigned char salt[PKCS5_SALT_LEN];
  95         char *str=NULL, *passarg = NULL, *pass = NULL;
  96         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
  97         int enc=1,printkey=0,i,base64=0;
  98         int debug=0,olb64=0,nosalt=0;
  99         const EVP_CIPHER *cipher=NULL,*c;
 100         char *inf=NULL,*outf=NULL;
 101         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 102 #define PROG_NAME_SIZE  16
 103         char pname[PROG_NAME_SIZE];
 104
 105         apps_startup();
 106
 107         if (bio_err == NULL)
 108                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 109                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 110
 111         /* first check the program name */
 112         program_name(argv[0],pname,PROG_NAME_SIZE);
 113         if (strcmp(pname,"base64") == 0)
 114                 base64=1;
 115
 116         cipher=EVP_get_cipherbyname(pname);
 117         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 118                 {
 119                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 120                 goto bad;
 121                 }
 122
 123         argc--;
 124         argv++;
 125         while (argc >= 1)
 126                 {
 127                 if      (strcmp(*argv,"-e") == 0)
 128                         enc=1;
 129                 else if (strcmp(*argv,"-in") == 0)
 130                         {
 131                         if (--argc < 1) goto bad;
 132                         inf= *(++argv);
 133                         }
 134                 else if (strcmp(*argv,"-out") == 0)
 135                         {
 136                         if (--argc < 1) goto bad;
 137                         outf= *(++argv);
 138                         }
 139                 else if (strcmp(*argv,"-pass") == 0)
 140                         {
 141                         if (--argc < 1) goto bad;
 142                         passarg= *(++argv);
 143                         }
 144                 else if (strcmp(*argv,"-d") == 0)
 145                         enc=0;
 146                 else if (strcmp(*argv,"-p") == 0)
 147                         printkey=1;
 148                 else if (strcmp(*argv,"-v") == 0)
 149                         verbose=1;
 150                 else if (strcmp(*argv,"-salt") == 0)
 151                         nosalt=0;
 152                 else if (strcmp(*argv,"-nosalt") == 0)
 153                         nosalt=1;
 154                 else if (strcmp(*argv,"-debug") == 0)
 155                         debug=1;
 156                 else if (strcmp(*argv,"-P") == 0)
 157                         printkey=2;
 158                 else if (strcmp(*argv,"-A") == 0)
 159                         olb64=1;
 160                 else if (strcmp(*argv,"-a") == 0)
 161                         base64=1;
 162                 else if (strcmp(*argv,"-base64") == 0)
 163                         base64=1;
 164                 else if (strcmp(*argv,"-bufsize") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         bufsize=(unsigned char *)*(++argv);
 168                         }
 169                 else if (strcmp(*argv,"-k") == 0)
 170                         {
 171                         if (--argc < 1) goto bad;
 172                         str= *(++argv);
 173                         }
 174                 else if (strcmp(*argv,"-kfile") == 0)
 175                         {
 176                         static char buf[128];
 177                         FILE *infile;
 178                         char *file;
 179
 180                         if (--argc < 1) goto bad;
 181                         file= *(++argv);
 182                         infile=fopen(file,"r");
 183                         if (infile == NULL)
 184                                 {
 185                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 186                                         file);
 187                                 goto bad;
 188                                 }
 189                         buf[0]='\0';
 190                         fgets(buf,128,infile);
 191                         fclose(infile);
 192                         i=strlen(buf);
 193                         if ((i > 0) &&
 194                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 195                                 buf[--i]='\0';
 196                         if ((i > 0) &&
 197                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 198                                 buf[--i]='\0';
 199                         if (i < 1)
 200                                 {
 201                                 BIO_printf(bio_err,"zero length password\n");
 202                                 goto bad;
 203                                 }
 204                         str=buf;
 205                         }
 206                 else if (strcmp(*argv,"-K") == 0)
 207                         {
 208                         if (--argc < 1) goto bad;
 209                         hkey= *(++argv);
 210                         }
 211                 else if (strcmp(*argv,"-S") == 0)
 212                         {
 213                         if (--argc < 1) goto bad;
 214                         hsalt= *(++argv);
 215                         }
 216                 else if (strcmp(*argv,"-iv") == 0)
 217                         {
 218                         if (--argc < 1) goto bad;
 219                         hiv= *(++argv);
 220                         }
 221                 else if ((argv[0][0] == '-') &&
 222                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 223                         {
 224                         cipher=c;
 225                         }
 226                 else if (strcmp(*argv,"-none") == 0)
 227                         cipher=NULL;
 228                 else
 229                         {
 230                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 231 bad:
 232                         BIO_printf(bio_err,"options are\n");
 233                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 234                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 235                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 236                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 237                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 238                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 239                         BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
 240                         BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
 241                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 242                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 243                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 244
 245                         BIO_printf(bio_err,"Cipher Types\n");
 246                         BIO_printf(bio_err,"des     : 56 bit key DES encryption\n");
 247                         BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n");
 248                         BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n");
 249 #ifndef NO_IDEA
 250                         BIO_printf(bio_err,"idea    :128 bit key IDEA encryption\n");
 251 #endif
 252 #ifndef NO_RC4
 253                         BIO_printf(bio_err,"rc2     :128 bit key RC2 encryption\n");
 254 #endif
 255 #ifndef NO_BF
 256                         BIO_printf(bio_err,"bf      :128 bit key Blowfish encryption\n");
 257 #endif
 258 #ifndef NO_RC4
 259                         BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n",
 260                                 LN_rc4);
 261 #endif
 262
 263                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 264                                 LN_des_ecb,LN_des_cbc,
 265                                 LN_des_cfb64,LN_des_ofb64);
 266                         BIO_printf(bio_err," -%-4s (%s)\n",
 267                                 "des", LN_des_cbc);
 268
 269                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 270                                 LN_des_ede,LN_des_ede_cbc,
 271                                 LN_des_ede_cfb64,LN_des_ede_ofb64);
 272                         BIO_printf(bio_err," -desx -none\n");
 273
 274
 275                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 276                                 LN_des_ede3,LN_des_ede3_cbc,
 277                                 LN_des_ede3_cfb64,LN_des_ede3_ofb64);
 278                         BIO_printf(bio_err," -%-4s (%s)\n",
 279                                 "des3", LN_des_ede3_cbc);
 280
 281 #ifndef NO_IDEA
 282                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 283                                 LN_idea_ecb, LN_idea_cbc,
 284                                 LN_idea_cfb64, LN_idea_ofb64);
 285                         BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc);
 286 #endif
 287 #ifndef NO_RC2
 288                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 289                                 LN_rc2_ecb, LN_rc2_cbc,
 290                                 LN_rc2_cfb64, LN_rc2_ofb64);
 291                         BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc);
 292 #endif
 293 #ifndef NO_BF
 294                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 295                                 LN_bf_ecb, LN_bf_cbc,
 296                                 LN_bf_cfb64, LN_bf_ofb64);
 297                         BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc);
 298 #endif
 299 #ifndef NO_CAST
 300                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 301                                 LN_cast5_ecb, LN_cast5_cbc,
 302                                 LN_cast5_cfb64, LN_cast5_ofb64);
 303                         BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc);
 304 #endif
 305 #ifndef NO_RC5
 306                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 307                                 LN_rc5_ecb, LN_rc5_cbc,
 308                                 LN_rc5_cfb64, LN_rc5_ofb64);
 309                         BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc);
 310 #endif
 311 #ifndef NO_RIJNDAEL
 312                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s\n",
 313                                    LN_rijndael_ecb_k128_b128,"","","","");
 314 #endif
 315
 316                         goto end;
 317                         }
 318                 argc--;
 319                 argv++;
 320                 }
 321
 322         if (bufsize != NULL)
 323                 {
 324                 unsigned long n;
 325
 326                 for (n=0; *bufsize; bufsize++)
 327                         {
 328                         i= *bufsize;
 329                         if ((i <= '9') && (i >= '0'))
 330                                 n=n*10+i-'0';
 331                         else if (i == 'k')
 332                                 {
 333                                 n*=1024;
 334                                 bufsize++;
 335                                 break;
 336                                 }
 337                         }
 338                 if (*bufsize != '\0')
 339                         {
 340                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 341                         goto end;
 342                         }
 343
 344                 /* It must be large enough for a base64 encoded line */
 345                 if (n < 80) n=80;
 346
 347                 bsize=(int)n;
 348                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 349                 }
 350
 351         strbuf=OPENSSL_malloc(SIZE);
 352         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 353         if ((buff == NULL) || (strbuf == NULL))
 354                 {
 355                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 356                 goto end;
 357                 }
 358
 359         in=BIO_new(BIO_s_file());
 360         out=BIO_new(BIO_s_file());
 361         if ((in == NULL) || (out == NULL))
 362                 {
 363                 ERR_print_errors(bio_err);
 364                 goto end;
 365                 }
 366         if (debug)
 367                 {
 368                 BIO_set_callback(in,BIO_debug_callback);
 369                 BIO_set_callback(out,BIO_debug_callback);
 370                 BIO_set_callback_arg(in,bio_err);
 371                 BIO_set_callback_arg(out,bio_err);
 372                 }
 373
 374         if (inf == NULL)
 375                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 376         else
 377                 {
 378                 if (BIO_read_filename(in,inf) <= 0)
 379                         {
 380                         perror(inf);
 381                         goto end;
 382                         }
 383                 }
 384
 385         if(!str && passarg) {
 386                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 387                         BIO_printf(bio_err, "Error getting password\n");
 388                         goto end;
 389                 }
 390                 str = pass;
 391         }
 392
 393         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 394                 {
 395                 for (;;)
 396                         {
 397                         char buf[200];
 398
 399                         sprintf(buf,"enter %s %s password:",
 400                                 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 401                                 (enc)?"encryption":"decryption");
 402                         strbuf[0]='\0';
 403                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 404                         if (i == 0)
 405                                 {
 406                                 if (strbuf[0] == '\0')
 407                                         {
 408                                         ret=1;
 409                                         goto end;
 410                                         }
 411                                 str=strbuf;
 412                                 break;
 413                                 }
 414                         if (i < 0)
 415                                 {
 416                                 BIO_printf(bio_err,"bad password read\n");
 417                                 goto end;
 418                                 }
 419                         }
 420                 }
 421
 422
 423         if (outf == NULL)
 424                 {
 425                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 426 #ifdef VMS
 427                 {
 428                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 429                 out = BIO_push(tmpbio, out);
 430                 }
 431 #endif
 432                 }
 433         else
 434                 {
 435                 if (BIO_write_filename(out,outf) <= 0)
 436                         {
 437                         perror(outf);
 438                         goto end;
 439                         }
 440                 }
 441
 442         rbio=in;
 443         wbio=out;
 444
 445         if (base64)
 446                 {
 447                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 448                         goto end;
 449                 if (debug)
 450                         {
 451                         BIO_set_callback(b64,BIO_debug_callback);
 452                         BIO_set_callback_arg(b64,bio_err);
 453                         }
 454                 if (olb64)
 455                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 456                 if (enc)
 457                         wbio=BIO_push(b64,wbio);
 458                 else
 459                         rbio=BIO_push(b64,rbio);
 460                 }
 461
 462         if (cipher != NULL)
 463                 {
 464                 if (str != NULL)
 465                         {
 466                         /* Salt handling: if encrypting generate a salt and
 467                          * write to output BIO. If decrypting read salt from
 468                          * input BIO.
 469                          */
 470                         unsigned char *sptr;
 471                         if(nosalt) sptr = NULL;
 472                         else {
 473                                 if(enc) {
 474                                         if(hsalt) {
 475                                                 if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
 476                                                         BIO_printf(bio_err,
 477                                                                 "invalid hex salt value\n");
 478                                                         goto end;
 479                                                 }
 480                                         } else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
 481                                                 goto end;
 482                                         /* If -P option then don't bother writing */
 483                                         if((printkey != 2)
 484                                            && (BIO_write(wbio,magic,
 485                                                          sizeof magic-1) != sizeof magic-1
 486                                                || BIO_write(wbio,
 487                                                             (char *)salt,
 488                                                             PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
 489                                                 BIO_printf(bio_err,"error writing output file\n");
 490                                                 goto end;
 491                                         }
 492                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 493                                           || BIO_read(rbio,
 494                                                       (unsigned char *)salt,
 495                                     PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
 496                                         BIO_printf(bio_err,"error reading input file\n");
 497                                         goto end;
 498                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 499                                     BIO_printf(bio_err,"bad magic number\n");
 500                                     goto end;
 501                                 }
 502
 503                                 sptr = salt;
 504                         }
 505
 506                         EVP_BytesToKey(cipher,EVP_md5(),sptr,
 507                                 (unsigned char *)str,
 508                                 strlen(str),1,key,iv);
 509                         /* zero the complete buffer or the string
 510                          * passed from the command line
 511                          * bug picked up by
 512                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 513                         if (str == strbuf)
 514                                 memset(str,0,SIZE);
 515                         else
 516                                 memset(str,0,strlen(str));
 517                         }
 518                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
 519                         {
 520                         BIO_printf(bio_err,"invalid hex iv value\n");
 521                         goto end;
 522                         }
 523                 if ((hkey != NULL) && !set_hex(hkey,key,24))
 524                         {
 525                         BIO_printf(bio_err,"invalid hex key value\n");
 526                         goto end;
 527                         }
 528
 529                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 530                         goto end;
 531                 BIO_set_cipher(benc,cipher,key,iv,enc);
 532                 if (debug)
 533                         {
 534                         BIO_set_callback(benc,BIO_debug_callback);
 535                         BIO_set_callback_arg(benc,bio_err);
 536                         }
 537
 538                 if (printkey)
 539                         {
 540                         if (!nosalt)
 541                                 {
 542                                 printf("salt=");
 543                                 for (i=0; i<PKCS5_SALT_LEN; i++)
 544                                         printf("%02X",salt[i]);
 545                                 printf("\n");
 546                                 }
 547                         if (cipher->key_len > 0)
 548                                 {
 549                                 printf("key=");
 550                                 for (i=0; i<cipher->key_len; i++)
 551                                         printf("%02X",key[i]);
 552                                 printf("\n");
 553                                 }
 554                         if (cipher->iv_len > 0)
 555                                 {
 556                                 printf("iv =");
 557                                 for (i=0; i<cipher->iv_len; i++)
 558                                         printf("%02X",iv[i]);
 559                                 printf("\n");
 560                                 }
 561                         if (printkey == 2)
 562                                 {
 563                                 ret=0;
 564                                 goto end;
 565                                 }
 566                         }
 567                 }
 568
 569         /* Only encrypt/decrypt as we write the file */
 570         if (benc != NULL)
 571                 wbio=BIO_push(benc,wbio);
 572
 573         for (;;)
 574                 {
 575                 inl=BIO_read(rbio,(char *)buff,bsize);
 576                 if (inl <= 0) break;
 577                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 578                         {
 579                         BIO_printf(bio_err,"error writing output file\n");
 580                         goto end;
 581                         }
 582                 }
 583         if (!BIO_flush(wbio))
 584                 {
 585                 BIO_printf(bio_err,"bad decrypt\n");
 586                 goto end;
 587                 }
 588
 589         ret=0;
 590         if (verbose)
 591                 {
 592                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 593                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 594                 }
 595 end:
 596         ERR_print_errors(bio_err);
 597         if (strbuf != NULL) OPENSSL_free(strbuf);
 598         if (buff != NULL) OPENSSL_free(buff);
 599         if (in != NULL) BIO_free(in);
 600         if (out != NULL) BIO_free_all(out);
 601         if (benc != NULL) BIO_free(benc);
 602         if (b64 != NULL) BIO_free(b64);
 603         if(pass) OPENSSL_free(pass);
 604         EXIT(ret);
 605         }
 606
 607 int set_hex(char *in, unsigned char *out, int size)
 608         {
 609         int i,n;
 610         unsigned char j;
 611
 612         n=strlen(in);
 613         if (n > (size*2))
 614                 {
 615                 BIO_printf(bio_err,"hex string is too long\n");
 616                 return(0);
 617                 }
 618         memset(out,0,size);
 619         for (i=0; i<n; i++)
 620                 {
 621                 j=(unsigned char)*in;
 622                 *(in++)='\0';
 623                 if (j == 0) break;
 624                 if ((j >= '0') && (j <= '9'))
 625                         j-='0';
 626                 else if ((j >= 'A') && (j <= 'F'))
 627                         j=j-'A'+10;
 628                 else if ((j >= 'a') && (j <= 'f'))
 629                         j=j-'a'+10;
 630                 else
 631                         {
 632                         BIO_printf(bio_err,"non-hex digit\n");
 633                         return(0);
 634                         }
 635                 if (i&1)
 636                         out[i/2]|=j;
 637                 else
 638                         out[i/2]=(j<<4);
 639                 }
 640         return(1);
 641         }