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                         goto end;
 312                         }
 313                 argc--;
 314                 argv++;
 315                 }
 316
 317         if (bufsize != NULL)
 318                 {
 319                 unsigned long n;
 320
 321                 for (n=0; *bufsize; bufsize++)
 322                         {
 323                         i= *bufsize;
 324                         if ((i <= '9') && (i >= '0'))
 325                                 n=n*10+i-'0';
 326                         else if (i == 'k')
 327                                 {
 328                                 n*=1024;
 329                                 bufsize++;
 330                                 break;
 331                                 }
 332                         }
 333                 if (*bufsize != '\0')
 334                         {
 335                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 336                         goto end;
 337                         }
 338
 339                 /* It must be large enough for a base64 encoded line */
 340                 if (n < 80) n=80;
 341
 342                 bsize=(int)n;
 343                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 344                 }
 345
 346         strbuf=Malloc(SIZE);
 347         buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize));
 348         if ((buff == NULL) || (strbuf == NULL))
 349                 {
 350                 BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 351                 goto end;
 352                 }
 353
 354         in=BIO_new(BIO_s_file());
 355         out=BIO_new(BIO_s_file());
 356         if ((in == NULL) || (out == NULL))
 357                 {
 358                 ERR_print_errors(bio_err);
 359                 goto end;
 360                 }
 361         if (debug)
 362                 {
 363                 BIO_set_callback(in,BIO_debug_callback);
 364                 BIO_set_callback(out,BIO_debug_callback);
 365                 BIO_set_callback_arg(in,bio_err);
 366                 BIO_set_callback_arg(out,bio_err);
 367                 }
 368
 369         if (inf == NULL)
 370                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 371         else
 372                 {
 373                 if (BIO_read_filename(in,inf) <= 0)
 374                         {
 375                         perror(inf);
 376                         goto end;
 377                         }
 378                 }
 379
 380         if(!str && passarg) {
 381                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 382                         BIO_printf(bio_err, "Error getting password\n");
 383                         goto end;
 384                 }
 385                 str = pass;
 386         }
 387
 388         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 389                 {
 390                 for (;;)
 391                         {
 392                         char buf[200];
 393
 394                         sprintf(buf,"enter %s %s password:",
 395                                 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 396                                 (enc)?"encryption":"decryption");
 397                         strbuf[0]='\0';
 398                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 399                         if (i == 0)
 400                                 {
 401                                 if (strbuf[0] == '\0')
 402                                         {
 403                                         ret=1;
 404                                         goto end;
 405                                         }
 406                                 str=strbuf;
 407                                 break;
 408                                 }
 409                         if (i < 0)
 410                                 {
 411                                 BIO_printf(bio_err,"bad password read\n");
 412                                 goto end;
 413                                 }
 414                         }
 415                 }
 416
 417
 418         if (outf == NULL)
 419                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 420         else
 421                 {
 422                 if (BIO_write_filename(out,outf) <= 0)
 423                         {
 424                         perror(outf);
 425                         goto end;
 426                         }
 427                 }
 428
 429         rbio=in;
 430         wbio=out;
 431
 432         if (base64)
 433                 {
 434                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 435                         goto end;
 436                 if (debug)
 437                         {
 438                         BIO_set_callback(b64,BIO_debug_callback);
 439                         BIO_set_callback_arg(b64,bio_err);
 440                         }
 441                 if (olb64)
 442                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 443                 if (enc)
 444                         wbio=BIO_push(b64,wbio);
 445                 else
 446                         rbio=BIO_push(b64,rbio);
 447                 }
 448
 449         if (cipher != NULL)
 450                 {
 451                 if (str != NULL)
 452                         {
 453                         /* Salt handling: if encrypting generate a salt and
 454                          * write to output BIO. If decrypting read salt from
 455                          * input BIO.
 456                          */
 457                         unsigned char *sptr;
 458                         if(nosalt) sptr = NULL;
 459                         else {
 460                                 if(enc) {
 461                                         if(hsalt) {
 462                                                 if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
 463                                                         BIO_printf(bio_err,
 464                                                                 "invalid hex salt value\n");
 465                                                         goto end;
 466                                                 }
 467                                         } else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
 468                                                 goto end;
 469                                         /* If -P option then don't bother writing */
 470                                         if((printkey != 2)
 471                                            && (BIO_write(wbio,magic,
 472                                                          sizeof magic-1) != sizeof magic-1
 473                                                || BIO_write(wbio,
 474                                                             (char *)salt,
 475                                                             PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
 476                                                 BIO_printf(bio_err,"error writing output file\n");
 477                                                 goto end;
 478                                         }
 479                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 480                                           || BIO_read(rbio,
 481                                                       (unsigned char *)salt,
 482                                     PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
 483                                         BIO_printf(bio_err,"error reading input file\n");
 484                                         goto end;
 485                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 486                                     BIO_printf(bio_err,"bad magic number\n");
 487                                     goto end;
 488                                 }
 489
 490                                 sptr = salt;
 491                         }
 492
 493                         EVP_BytesToKey(cipher,EVP_md5(),sptr,
 494                                 (unsigned char *)str,
 495                                 strlen(str),1,key,iv);
 496                         /* zero the complete buffer or the string
 497                          * passed from the command line
 498                          * bug picked up by
 499                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 500                         if (str == strbuf)
 501                                 memset(str,0,SIZE);
 502                         else
 503                                 memset(str,0,strlen(str));
 504                         }
 505                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
 506                         {
 507                         BIO_printf(bio_err,"invalid hex iv value\n");
 508                         goto end;
 509                         }
 510                 if ((hkey != NULL) && !set_hex(hkey,key,24))
 511                         {
 512                         BIO_printf(bio_err,"invalid hex key value\n");
 513                         goto end;
 514                         }
 515
 516                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 517                         goto end;
 518                 BIO_set_cipher(benc,cipher,key,iv,enc);
 519                 if (debug)
 520                         {
 521                         BIO_set_callback(benc,BIO_debug_callback);
 522                         BIO_set_callback_arg(benc,bio_err);
 523                         }
 524
 525                 if (printkey)
 526                         {
 527                         if (!nosalt)
 528                                 {
 529                                 printf("salt=");
 530                                 for (i=0; i<PKCS5_SALT_LEN; i++)
 531                                         printf("%02X",salt[i]);
 532                                 printf("\n");
 533                                 }
 534                         if (cipher->key_len > 0)
 535                                 {
 536                                 printf("key=");
 537                                 for (i=0; i<cipher->key_len; i++)
 538                                         printf("%02X",key[i]);
 539                                 printf("\n");
 540                                 }
 541                         if (cipher->iv_len > 0)
 542                                 {
 543                                 printf("iv =");
 544                                 for (i=0; i<cipher->iv_len; i++)
 545                                         printf("%02X",iv[i]);
 546                                 printf("\n");
 547                                 }
 548                         if (printkey == 2)
 549                                 {
 550                                 ret=0;
 551                                 goto end;
 552                                 }
 553                         }
 554                 }
 555
 556         /* Only encrypt/decrypt as we write the file */
 557         if (benc != NULL)
 558                 wbio=BIO_push(benc,wbio);
 559
 560         for (;;)
 561                 {
 562                 inl=BIO_read(rbio,(char *)buff,bsize);
 563                 if (inl <= 0) break;
 564                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 565                         {
 566                         BIO_printf(bio_err,"error writing output file\n");
 567                         goto end;
 568                         }
 569                 }
 570         if (!BIO_flush(wbio))
 571                 {
 572                 BIO_printf(bio_err,"bad decrypt\n");
 573                 goto end;
 574                 }
 575
 576         ret=0;
 577         if (verbose)
 578                 {
 579                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 580                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 581                 }
 582 end:
 583         ERR_print_errors(bio_err);
 584         if (strbuf != NULL) Free(strbuf);
 585         if (buff != NULL) Free(buff);
 586         if (in != NULL) BIO_free(in);
 587         if (out != NULL) BIO_free(out);
 588         if (benc != NULL) BIO_free(benc);
 589         if (b64 != NULL) BIO_free(b64);
 590         if(pass) Free(pass);
 591         EXIT(ret);
 592         }
 593
 594 int set_hex(char *in, unsigned char *out, int size)
 595         {
 596         int i,n;
 597         unsigned char j;
 598
 599         n=strlen(in);
 600         if (n > (size*2))
 601                 {
 602                 BIO_printf(bio_err,"hex string is too long\n");
 603                 return(0);
 604                 }
 605         memset(out,0,size);
 606         for (i=0; i<n; i++)
 607                 {
 608                 j=(unsigned char)*in;
 609                 *(in++)='\0';
 610                 if (j == 0) break;
 611                 if ((j >= '0') && (j <= '9'))
 612                         j-='0';
 613                 else if ((j >= 'A') && (j <= 'F'))
 614                         j=j-'A'+10;
 615                 else if ((j >= 'a') && (j <= 'f'))
 616                         j=j-'a'+10;
 617                 else
 618                         {
 619                         BIO_printf(bio_err,"non-hex digit\n");
 620                         return(0);
 621                         }
 622                 if (i&1)
 623                         out[i/2]|=j;
 624                 else
 625                         out[i/2]=(j<<4);
 626                 }
 627         return(1);
 628         }