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 #include <openssl/pem.h>
  70 #include <openssl/comp.h>
  71 #include <ctype.h>
  72
  73 int set_hex(char *in,unsigned char *out,int size);
  74 #undef SIZE
  75 #undef BSIZE
  76 #undef PROG
  77
  78 #define SIZE    (512)
  79 #define BSIZE   (8*1024)
  80 #define PROG    enc_main
  81
  82 static void show_ciphers(const OBJ_NAME *name,void *bio_)
  83         {
  84         BIO *bio=bio_;
  85         static int n;
  86
  87         if(!islower((unsigned char)*name->name))
  88                 return;
  89
  90         BIO_printf(bio,"-%-25s",name->name);
  91         if(++n == 3)
  92                 {
  93                 BIO_printf(bio,"\n");
  94                 n=0;
  95                 }
  96         else
  97                 BIO_printf(bio," ");
  98         }
  99
 100 int MAIN(int, char **);
 101
 102 int MAIN(int argc, char **argv)
 103         {
 104 #ifndef OPENSSL_NO_ENGINE
 105         ENGINE *e = NULL;
 106 #endif
 107         static const char magic[]="Salted__";
 108         char mbuf[sizeof magic-1];
 109         char *strbuf=NULL;
 110         unsigned char *buff=NULL,*bufsize=NULL;
 111         int bsize=BSIZE,verbose=0;
 112         int ret=1,inl;
 113         int nopad = 0;
 114         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 115         unsigned char salt[PKCS5_SALT_LEN];
 116         char *str=NULL, *passarg = NULL, *pass = NULL;
 117         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 118         char *md=NULL;
 119         int enc=1,printkey=0,i,base64=0;
 120 #ifdef ZLIB
 121         int do_zlib=0;
 122         BIO *bzl = NULL;
 123 #endif
 124         int debug=0,olb64=0,nosalt=0;
 125         const EVP_CIPHER *cipher=NULL,*c;
 126         EVP_CIPHER_CTX *ctx = NULL;
 127         char *inf=NULL,*outf=NULL;
 128         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 129 #define PROG_NAME_SIZE  39
 130         char pname[PROG_NAME_SIZE+1];
 131 #ifndef OPENSSL_NO_ENGINE
 132         char *engine = NULL;
 133 #endif
 134         const EVP_MD *dgst=NULL;
 135
 136         apps_startup();
 137
 138         if (bio_err == NULL)
 139                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 140                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 141
 142         if (!load_config(bio_err, NULL))
 143                 goto end;
 144
 145         /* first check the program name */
 146         program_name(argv[0],pname,sizeof pname);
 147         if (strcmp(pname,"base64") == 0)
 148                 base64=1;
 149 #ifdef ZLIB
 150         if (strcmp(pname,"zlib") == 0)
 151                 do_zlib=1;
 152 #endif
 153
 154         cipher=EVP_get_cipherbyname(pname);
 155 #ifdef ZLIB
 156         if (!do_zlib && !base64 && (cipher == NULL)
 157                                 && (strcmp(pname,"enc") != 0))
 158 #else
 159         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 160 #endif
 161                 {
 162                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 163                 goto bad;
 164                 }
 165
 166         argc--;
 167         argv++;
 168         while (argc >= 1)
 169                 {
 170                 if      (strcmp(*argv,"-e") == 0)
 171                         enc=1;
 172                 else if (strcmp(*argv,"-in") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         inf= *(++argv);
 176                         }
 177                 else if (strcmp(*argv,"-out") == 0)
 178                         {
 179                         if (--argc < 1) goto bad;
 180                         outf= *(++argv);
 181                         }
 182                 else if (strcmp(*argv,"-pass") == 0)
 183                         {
 184                         if (--argc < 1) goto bad;
 185                         passarg= *(++argv);
 186                         }
 187 #ifndef OPENSSL_NO_ENGINE
 188                 else if (strcmp(*argv,"-engine") == 0)
 189                         {
 190                         if (--argc < 1) goto bad;
 191                         engine= *(++argv);
 192                         }
 193 #endif
 194                 else if (strcmp(*argv,"-d") == 0)
 195                         enc=0;
 196                 else if (strcmp(*argv,"-p") == 0)
 197                         printkey=1;
 198                 else if (strcmp(*argv,"-v") == 0)
 199                         verbose=1;
 200                 else if (strcmp(*argv,"-nopad") == 0)
 201                         nopad=1;
 202                 else if (strcmp(*argv,"-salt") == 0)
 203                         nosalt=0;
 204                 else if (strcmp(*argv,"-nosalt") == 0)
 205                         nosalt=1;
 206                 else if (strcmp(*argv,"-debug") == 0)
 207                         debug=1;
 208                 else if (strcmp(*argv,"-P") == 0)
 209                         printkey=2;
 210                 else if (strcmp(*argv,"-A") == 0)
 211                         olb64=1;
 212                 else if (strcmp(*argv,"-a") == 0)
 213                         base64=1;
 214                 else if (strcmp(*argv,"-base64") == 0)
 215                         base64=1;
 216 #ifdef ZLIB
 217                 else if (strcmp(*argv,"-z") == 0)
 218                         do_zlib=1;
 219 #endif
 220                 else if (strcmp(*argv,"-bufsize") == 0)
 221                         {
 222                         if (--argc < 1) goto bad;
 223                         bufsize=(unsigned char *)*(++argv);
 224                         }
 225                 else if (strcmp(*argv,"-k") == 0)
 226                         {
 227                         if (--argc < 1) goto bad;
 228                         str= *(++argv);
 229                         }
 230                 else if (strcmp(*argv,"-kfile") == 0)
 231                         {
 232                         static char buf[128];
 233                         FILE *infile;
 234                         char *file;
 235
 236                         if (--argc < 1) goto bad;
 237                         file= *(++argv);
 238                         infile=fopen(file,"r");
 239                         if (infile == NULL)
 240                                 {
 241                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 242                                         file);
 243                                 goto bad;
 244                                 }
 245                         buf[0]='\0';
 246                         fgets(buf,sizeof buf,infile);
 247                         fclose(infile);
 248                         i=strlen(buf);
 249                         if ((i > 0) &&
 250                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 251                                 buf[--i]='\0';
 252                         if ((i > 0) &&
 253                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 254                                 buf[--i]='\0';
 255                         if (i < 1)
 256                                 {
 257                                 BIO_printf(bio_err,"zero length password\n");
 258                                 goto bad;
 259                                 }
 260                         str=buf;
 261                         }
 262                 else if (strcmp(*argv,"-K") == 0)
 263                         {
 264                         if (--argc < 1) goto bad;
 265                         hkey= *(++argv);
 266                         }
 267                 else if (strcmp(*argv,"-S") == 0)
 268                         {
 269                         if (--argc < 1) goto bad;
 270                         hsalt= *(++argv);
 271                         }
 272                 else if (strcmp(*argv,"-iv") == 0)
 273                         {
 274                         if (--argc < 1) goto bad;
 275                         hiv= *(++argv);
 276                         }
 277                 else if (strcmp(*argv,"-md") == 0)
 278                         {
 279                         if (--argc < 1) goto bad;
 280                         md= *(++argv);
 281                         }
 282                 else if ((argv[0][0] == '-') &&
 283                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 284                         {
 285                         cipher=c;
 286                         }
 287                 else if (strcmp(*argv,"-none") == 0)
 288                         cipher=NULL;
 289                 else
 290                         {
 291                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 292 bad:
 293                         BIO_printf(bio_err,"options are\n");
 294                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 295                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 296                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 297                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 298                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 299                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 300                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 301                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 302                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 303                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 304                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
 305                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 306                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 307                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 308                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
 309 #ifndef OPENSSL_NO_ENGINE
 310                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 311 #endif
 312
 313                         BIO_printf(bio_err,"Cipher Types\n");
 314                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 315                                                show_ciphers,
 316                                                bio_err);
 317                         BIO_printf(bio_err,"\n");
 318
 319                         goto end;
 320                         }
 321                 argc--;
 322                 argv++;
 323                 }
 324
 325 #ifndef OPENSSL_NO_ENGINE
 326         e = setup_engine(bio_err, engine, 0);
 327 #endif
 328
 329         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 330                 {
 331                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 332                 goto end;
 333                 }
 334
 335         if (dgst == NULL)
 336                 {
 337                 dgst = EVP_md5();
 338                 }
 339
 340         if (bufsize != NULL)
 341                 {
 342                 unsigned long n;
 343
 344                 for (n=0; *bufsize; bufsize++)
 345                         {
 346                         i= *bufsize;
 347                         if ((i <= '9') && (i >= '0'))
 348                                 n=n*10+i-'0';
 349                         else if (i == 'k')
 350                                 {
 351                                 n*=1024;
 352                                 bufsize++;
 353                                 break;
 354                                 }
 355                         }
 356                 if (*bufsize != '\0')
 357                         {
 358                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 359                         goto end;
 360                         }
 361
 362                 /* It must be large enough for a base64 encoded line */
 363                 if (base64 && n < 80) n=80;
 364
 365                 bsize=(int)n;
 366                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 367                 }
 368
 369         strbuf=OPENSSL_malloc(SIZE);
 370         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 371         if ((buff == NULL) || (strbuf == NULL))
 372                 {
 373                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 374                 goto end;
 375                 }
 376
 377         in=BIO_new(BIO_s_file());
 378         out=BIO_new(BIO_s_file());
 379         if ((in == NULL) || (out == NULL))
 380                 {
 381                 ERR_print_errors(bio_err);
 382                 goto end;
 383                 }
 384         if (debug)
 385                 {
 386                 BIO_set_callback(in,BIO_debug_callback);
 387                 BIO_set_callback(out,BIO_debug_callback);
 388                 BIO_set_callback_arg(in,(char *)bio_err);
 389                 BIO_set_callback_arg(out,(char *)bio_err);
 390                 }
 391
 392         if (inf == NULL)
 393                 {
 394                 if (bufsize != NULL)
 395                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 396                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 397                 }
 398         else
 399                 {
 400                 if (BIO_read_filename(in,inf) <= 0)
 401                         {
 402                         perror(inf);
 403                         goto end;
 404                         }
 405                 }
 406
 407         if(!str && passarg) {
 408                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 409                         BIO_printf(bio_err, "Error getting password\n");
 410                         goto end;
 411                 }
 412                 str = pass;
 413         }
 414
 415         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 416                 {
 417                 for (;;)
 418                         {
 419                         char buf[200];
 420
 421                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 422                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 423                                      (enc)?"encryption":"decryption");
 424                         strbuf[0]='\0';
 425                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 426                         if (i == 0)
 427                                 {
 428                                 if (strbuf[0] == '\0')
 429                                         {
 430                                         ret=1;
 431                                         goto end;
 432                                         }
 433                                 str=strbuf;
 434                                 break;
 435                                 }
 436                         if (i < 0)
 437                                 {
 438                                 BIO_printf(bio_err,"bad password read\n");
 439                                 goto end;
 440                                 }
 441                         }
 442                 }
 443
 444
 445         if (outf == NULL)
 446                 {
 447                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 448                 if (bufsize != NULL)
 449                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 450 #ifdef OPENSSL_SYS_VMS
 451                 {
 452                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 453                 out = BIO_push(tmpbio, out);
 454                 }
 455 #endif
 456                 }
 457         else
 458                 {
 459                 if (BIO_write_filename(out,outf) <= 0)
 460                         {
 461                         perror(outf);
 462                         goto end;
 463                         }
 464                 }
 465
 466         rbio=in;
 467         wbio=out;
 468
 469 #ifdef ZLIB
 470
 471         if (do_zlib)
 472                 {
 473                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
 474                         goto end;
 475                 if (enc)
 476                         wbio=BIO_push(bzl,wbio);
 477                 else
 478                         rbio=BIO_push(bzl,rbio);
 479                 }
 480 #endif
 481
 482         if (base64)
 483                 {
 484                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 485                         goto end;
 486                 if (debug)
 487                         {
 488                         BIO_set_callback(b64,BIO_debug_callback);
 489                         BIO_set_callback_arg(b64,(char *)bio_err);
 490                         }
 491                 if (olb64)
 492                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 493                 if (enc)
 494                         wbio=BIO_push(b64,wbio);
 495                 else
 496                         rbio=BIO_push(b64,rbio);
 497                 }
 498
 499         if (cipher != NULL)
 500                 {
 501                 /* Note that str is NULL if a key was passed on the command
 502                  * line, so we get no salt in that case. Is this a bug?
 503                  */
 504                 if (str != NULL)
 505                         {
 506                         /* Salt handling: if encrypting generate a salt and
 507                          * write to output BIO. If decrypting read salt from
 508                          * input BIO.
 509                          */
 510                         unsigned char *sptr;
 511                         if(nosalt) sptr = NULL;
 512                         else {
 513                                 if(enc) {
 514                                         if(hsalt) {
 515                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 516                                                         BIO_printf(bio_err,
 517                                                                 "invalid hex salt value\n");
 518                                                         goto end;
 519                                                 }
 520                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 521                                                 goto end;
 522                                         /* If -P option then don't bother writing */
 523                                         if((printkey != 2)
 524                                            && (BIO_write(wbio,magic,
 525                                                          sizeof magic-1) != sizeof magic-1
 526                                                || BIO_write(wbio,
 527                                                             (char *)salt,
 528                                                             sizeof salt) != sizeof salt)) {
 529                                                 BIO_printf(bio_err,"error writing output file\n");
 530                                                 goto end;
 531                                         }
 532                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 533                                           || BIO_read(rbio,
 534                                                       (unsigned char *)salt,
 535                                     sizeof salt) != sizeof salt) {
 536                                         BIO_printf(bio_err,"error reading input file\n");
 537                                         goto end;
 538                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 539                                     BIO_printf(bio_err,"bad magic number\n");
 540                                     goto end;
 541                                 }
 542
 543                                 sptr = salt;
 544                         }
 545
 546                         EVP_BytesToKey(cipher,dgst,sptr,
 547                                 (unsigned char *)str,
 548                                 strlen(str),1,key,iv);
 549                         /* zero the complete buffer or the string
 550                          * passed from the command line
 551                          * bug picked up by
 552                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 553                         if (str == strbuf)
 554                                 OPENSSL_cleanse(str,SIZE);
 555                         else
 556                                 OPENSSL_cleanse(str,strlen(str));
 557                         }
 558                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 559                         {
 560                         BIO_printf(bio_err,"invalid hex iv value\n");
 561                         goto end;
 562                         }
 563                 if ((hiv == NULL) && (str == NULL)
 564                     && EVP_CIPHER_iv_length(cipher) != 0)
 565                         {
 566                         /* No IV was explicitly set and no IV was generated
 567                          * during EVP_BytesToKey. Hence the IV is undefined,
 568                          * making correct decryption impossible. */
 569                         BIO_printf(bio_err, "iv undefined\n");
 570                         goto end;
 571                         }
 572                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 573                         {
 574                         BIO_printf(bio_err,"invalid hex key value\n");
 575                         goto end;
 576                         }
 577
 578                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 579                         goto end;
 580
 581                 /* Since we may be changing parameters work on the encryption
 582                  * context rather than calling BIO_set_cipher().
 583                  */
 584
 585                 BIO_get_cipher_ctx(benc, &ctx);
 586                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 587                         {
 588                         BIO_printf(bio_err, "Error setting cipher %s\n",
 589                                 EVP_CIPHER_name(cipher));
 590                         ERR_print_errors(bio_err);
 591                         goto end;
 592                         }
 593
 594                 if (nopad)
 595                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 596
 597                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 598                         {
 599                         BIO_printf(bio_err, "Error setting cipher %s\n",
 600                                 EVP_CIPHER_name(cipher));
 601                         ERR_print_errors(bio_err);
 602                         goto end;
 603                         }
 604
 605                 if (debug)
 606                         {
 607                         BIO_set_callback(benc,BIO_debug_callback);
 608                         BIO_set_callback_arg(benc,(char *)bio_err);
 609                         }
 610
 611                 if (printkey)
 612                         {
 613                         if (!nosalt)
 614                                 {
 615                                 printf("salt=");
 616                                 for (i=0; i<(int)sizeof(salt); i++)
 617                                         printf("%02X",salt[i]);
 618                                 printf("\n");
 619                                 }
 620                         if (cipher->key_len > 0)
 621                                 {
 622                                 printf("key=");
 623                                 for (i=0; i<cipher->key_len; i++)
 624                                         printf("%02X",key[i]);
 625                                 printf("\n");
 626                                 }
 627                         if (cipher->iv_len > 0)
 628                                 {
 629                                 printf("iv =");
 630                                 for (i=0; i<cipher->iv_len; i++)
 631                                         printf("%02X",iv[i]);
 632                                 printf("\n");
 633                                 }
 634                         if (printkey == 2)
 635                                 {
 636                                 ret=0;
 637                                 goto end;
 638                                 }
 639                         }
 640                 }
 641
 642         /* Only encrypt/decrypt as we write the file */
 643         if (benc != NULL)
 644                 wbio=BIO_push(benc,wbio);
 645
 646         for (;;)
 647                 {
 648                 inl=BIO_read(rbio,(char *)buff,bsize);
 649                 if (inl <= 0) break;
 650                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 651                         {
 652                         BIO_printf(bio_err,"error writing output file\n");
 653                         goto end;
 654                         }
 655                 }
 656         if (!BIO_flush(wbio))
 657                 {
 658                 BIO_printf(bio_err,"bad decrypt\n");
 659                 goto end;
 660                 }
 661
 662         ret=0;
 663         if (verbose)
 664                 {
 665                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 666                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 667                 }
 668 end:
 669         ERR_print_errors(bio_err);
 670         if (strbuf != NULL) OPENSSL_free(strbuf);
 671         if (buff != NULL) OPENSSL_free(buff);
 672         if (in != NULL) BIO_free(in);
 673         if (out != NULL) BIO_free_all(out);
 674         if (benc != NULL) BIO_free(benc);
 675         if (b64 != NULL) BIO_free(b64);
 676 #ifdef ZLIB
 677         if (bzl != NULL) BIO_free(bzl);
 678 #endif
 679         if(pass) OPENSSL_free(pass);
 680         apps_shutdown();
 681         OPENSSL_EXIT(ret);
 682         }
 683
 684 int set_hex(char *in, unsigned char *out, int size)
 685         {
 686         int i,n;
 687         unsigned char j;
 688
 689         n=strlen(in);
 690         if (n > (size*2))
 691                 {
 692                 BIO_printf(bio_err,"hex string is too long\n");
 693                 return(0);
 694                 }
 695         memset(out,0,size);
 696         for (i=0; i<n; i++)
 697                 {
 698                 j=(unsigned char)*in;
 699                 *(in++)='\0';
 700                 if (j == 0) break;
 701                 if ((j >= '0') && (j <= '9'))
 702                         j-='0';
 703                 else if ((j >= 'A') && (j <= 'F'))
 704                         j=j-'A'+10;
 705                 else if ((j >= 'a') && (j <= 'f'))
 706                         j=j-'a'+10;
 707                 else
 708                         {
 709                         BIO_printf(bio_err,"non-hex digit\n");
 710                         return(0);
 711                         }
 712                 if (i&1)
 713                         out[i/2]|=j;
 714                 else
 715                         out[i/2]=(j<<4);
 716                 }
 717         return(1);
 718         }