crypto/openssl/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         static const char magic[]="Salted__";
 105         char mbuf[sizeof magic-1];
 106         char *strbuf=NULL;
 107         unsigned char *buff=NULL,*bufsize=NULL;
 108         int bsize=BSIZE,verbose=0;
 109         int ret=1,inl;
 110         int nopad = 0;
 111         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 112         unsigned char salt[PKCS5_SALT_LEN];
 113         char *str=NULL, *passarg = NULL, *pass = NULL;
 114         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 115         char *md=NULL;
 116         int enc=1,printkey=0,i,base64=0;
 117 #ifdef ZLIB
 118         int do_zlib=0;
 119         BIO *bzl = NULL;
 120 #endif
 121         int debug=0,olb64=0,nosalt=0;
 122         const EVP_CIPHER *cipher=NULL,*c;
 123         EVP_CIPHER_CTX *ctx = NULL;
 124         char *inf=NULL,*outf=NULL;
 125         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 126 #define PROG_NAME_SIZE  39
 127         char pname[PROG_NAME_SIZE+1];
 128 #ifndef OPENSSL_NO_ENGINE
 129         char *engine = NULL;
 130 #endif
 131         const EVP_MD *dgst=NULL;
 132
 133         apps_startup();
 134
 135         if (bio_err == NULL)
 136                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 137                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 138
 139         if (!load_config(bio_err, NULL))
 140                 goto end;
 141
 142         /* first check the program name */
 143         program_name(argv[0],pname,sizeof pname);
 144         if (strcmp(pname,"base64") == 0)
 145                 base64=1;
 146 #ifdef ZLIB
 147         if (strcmp(pname,"zlib") == 0)
 148                 do_zlib=1;
 149 #endif
 150
 151         cipher=EVP_get_cipherbyname(pname);
 152 #ifdef ZLIB
 153         if (!do_zlib && !base64 && (cipher == NULL)
 154                                 && (strcmp(pname,"enc") != 0))
 155 #else
 156         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 157 #endif
 158                 {
 159                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 160                 goto bad;
 161                 }
 162
 163         argc--;
 164         argv++;
 165         while (argc >= 1)
 166                 {
 167                 if      (strcmp(*argv,"-e") == 0)
 168                         enc=1;
 169                 else if (strcmp(*argv,"-in") == 0)
 170                         {
 171                         if (--argc < 1) goto bad;
 172                         inf= *(++argv);
 173                         }
 174                 else if (strcmp(*argv,"-out") == 0)
 175                         {
 176                         if (--argc < 1) goto bad;
 177                         outf= *(++argv);
 178                         }
 179                 else if (strcmp(*argv,"-pass") == 0)
 180                         {
 181                         if (--argc < 1) goto bad;
 182                         passarg= *(++argv);
 183                         }
 184 #ifndef OPENSSL_NO_ENGINE
 185                 else if (strcmp(*argv,"-engine") == 0)
 186                         {
 187                         if (--argc < 1) goto bad;
 188                         engine= *(++argv);
 189                         }
 190 #endif
 191                 else if (strcmp(*argv,"-d") == 0)
 192                         enc=0;
 193                 else if (strcmp(*argv,"-p") == 0)
 194                         printkey=1;
 195                 else if (strcmp(*argv,"-v") == 0)
 196                         verbose=1;
 197                 else if (strcmp(*argv,"-nopad") == 0)
 198                         nopad=1;
 199                 else if (strcmp(*argv,"-salt") == 0)
 200                         nosalt=0;
 201                 else if (strcmp(*argv,"-nosalt") == 0)
 202                         nosalt=1;
 203                 else if (strcmp(*argv,"-debug") == 0)
 204                         debug=1;
 205                 else if (strcmp(*argv,"-P") == 0)
 206                         printkey=2;
 207                 else if (strcmp(*argv,"-A") == 0)
 208                         olb64=1;
 209                 else if (strcmp(*argv,"-a") == 0)
 210                         base64=1;
 211                 else if (strcmp(*argv,"-base64") == 0)
 212                         base64=1;
 213 #ifdef ZLIB
 214                 else if (strcmp(*argv,"-z") == 0)
 215                         do_zlib=1;
 216 #endif
 217                 else if (strcmp(*argv,"-bufsize") == 0)
 218                         {
 219                         if (--argc < 1) goto bad;
 220                         bufsize=(unsigned char *)*(++argv);
 221                         }
 222                 else if (strcmp(*argv,"-k") == 0)
 223                         {
 224                         if (--argc < 1) goto bad;
 225                         str= *(++argv);
 226                         }
 227                 else if (strcmp(*argv,"-kfile") == 0)
 228                         {
 229                         static char buf[128];
 230                         FILE *infile;
 231                         char *file;
 232
 233                         if (--argc < 1) goto bad;
 234                         file= *(++argv);
 235                         infile=fopen(file,"r");
 236                         if (infile == NULL)
 237                                 {
 238                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 239                                         file);
 240                                 goto bad;
 241                                 }
 242                         buf[0]='\0';
 243                         if (!fgets(buf,sizeof buf,infile))
 244                                 {
 245                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 246                                         file);
 247                                 goto bad;
 248                                 }
 249                         fclose(infile);
 250                         i=strlen(buf);
 251                         if ((i > 0) &&
 252                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 253                                 buf[--i]='\0';
 254                         if ((i > 0) &&
 255                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 256                                 buf[--i]='\0';
 257                         if (i < 1)
 258                                 {
 259                                 BIO_printf(bio_err,"zero length password\n");
 260                                 goto bad;
 261                                 }
 262                         str=buf;
 263                         }
 264                 else if (strcmp(*argv,"-K") == 0)
 265                         {
 266                         if (--argc < 1) goto bad;
 267                         hkey= *(++argv);
 268                         }
 269                 else if (strcmp(*argv,"-S") == 0)
 270                         {
 271                         if (--argc < 1) goto bad;
 272                         hsalt= *(++argv);
 273                         }
 274                 else if (strcmp(*argv,"-iv") == 0)
 275                         {
 276                         if (--argc < 1) goto bad;
 277                         hiv= *(++argv);
 278                         }
 279                 else if (strcmp(*argv,"-md") == 0)
 280                         {
 281                         if (--argc < 1) goto bad;
 282                         md= *(++argv);
 283                         }
 284                 else if ((argv[0][0] == '-') &&
 285                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 286                         {
 287                         cipher=c;
 288                         }
 289                 else if (strcmp(*argv,"-none") == 0)
 290                         cipher=NULL;
 291                 else
 292                         {
 293                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 294 bad:
 295                         BIO_printf(bio_err,"options are\n");
 296                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 297                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 298                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 299                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 300                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 301                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 302                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 303                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 304                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 305                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 306                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
 307                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 308                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 309                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 310                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
 311 #ifndef OPENSSL_NO_ENGINE
 312                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 313 #endif
 314
 315                         BIO_printf(bio_err,"Cipher Types\n");
 316                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 317                                                show_ciphers,
 318                                                bio_err);
 319                         BIO_printf(bio_err,"\n");
 320
 321                         goto end;
 322                         }
 323                 argc--;
 324                 argv++;
 325                 }
 326
 327 #ifndef OPENSSL_NO_ENGINE
 328         setup_engine(bio_err, engine, 0);
 329 #endif
 330
 331         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 332                 {
 333                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 334                 goto end;
 335                 }
 336
 337         if (dgst == NULL)
 338                 {
 339                 dgst = EVP_md5();
 340                 }
 341
 342         if (bufsize != NULL)
 343                 {
 344                 unsigned long n;
 345
 346                 for (n=0; *bufsize; bufsize++)
 347                         {
 348                         i= *bufsize;
 349                         if ((i <= '9') && (i >= '0'))
 350                                 n=n*10+i-'0';
 351                         else if (i == 'k')
 352                                 {
 353                                 n*=1024;
 354                                 bufsize++;
 355                                 break;
 356                                 }
 357                         }
 358                 if (*bufsize != '\0')
 359                         {
 360                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 361                         goto end;
 362                         }
 363
 364                 /* It must be large enough for a base64 encoded line */
 365                 if (base64 && n < 80) n=80;
 366
 367                 bsize=(int)n;
 368                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 369                 }
 370
 371         strbuf=OPENSSL_malloc(SIZE);
 372         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 373         if ((buff == NULL) || (strbuf == NULL))
 374                 {
 375                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 376                 goto end;
 377                 }
 378
 379         in=BIO_new(BIO_s_file());
 380         out=BIO_new(BIO_s_file());
 381         if ((in == NULL) || (out == NULL))
 382                 {
 383                 ERR_print_errors(bio_err);
 384                 goto end;
 385                 }
 386         if (debug)
 387                 {
 388                 BIO_set_callback(in,BIO_debug_callback);
 389                 BIO_set_callback(out,BIO_debug_callback);
 390                 BIO_set_callback_arg(in,(char *)bio_err);
 391                 BIO_set_callback_arg(out,(char *)bio_err);
 392                 }
 393
 394         if (inf == NULL)
 395                 {
 396 #ifndef OPENSSL_NO_SETVBUF_IONBF
 397                 if (bufsize != NULL)
 398                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 399 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 400                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 401                 }
 402         else
 403                 {
 404                 if (BIO_read_filename(in,inf) <= 0)
 405                         {
 406                         perror(inf);
 407                         goto end;
 408                         }
 409                 }
 410
 411         if(!str && passarg) {
 412                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 413                         BIO_printf(bio_err, "Error getting password\n");
 414                         goto end;
 415                 }
 416                 str = pass;
 417         }
 418
 419         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 420                 {
 421                 for (;;)
 422                         {
 423                         char buf[200];
 424
 425                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 426                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 427                                      (enc)?"encryption":"decryption");
 428                         strbuf[0]='\0';
 429                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 430                         if (i == 0)
 431                                 {
 432                                 if (strbuf[0] == '\0')
 433                                         {
 434                                         ret=1;
 435                                         goto end;
 436                                         }
 437                                 str=strbuf;
 438                                 break;
 439                                 }
 440                         if (i < 0)
 441                                 {
 442                                 BIO_printf(bio_err,"bad password read\n");
 443                                 goto end;
 444                                 }
 445                         }
 446                 }
 447
 448
 449         if (outf == NULL)
 450                 {
 451                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 452 #ifndef OPENSSL_NO_SETVBUF_IONBF
 453                 if (bufsize != NULL)
 454                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 455 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 456 #ifdef OPENSSL_SYS_VMS
 457                 {
 458                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 459                 out = BIO_push(tmpbio, out);
 460                 }
 461 #endif
 462                 }
 463         else
 464                 {
 465                 if (BIO_write_filename(out,outf) <= 0)
 466                         {
 467                         perror(outf);
 468                         goto end;
 469                         }
 470                 }
 471
 472         rbio=in;
 473         wbio=out;
 474
 475 #ifdef ZLIB
 476
 477         if (do_zlib)
 478                 {
 479                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
 480                         goto end;
 481                 if (enc)
 482                         wbio=BIO_push(bzl,wbio);
 483                 else
 484                         rbio=BIO_push(bzl,rbio);
 485                 }
 486 #endif
 487
 488         if (base64)
 489                 {
 490                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 491                         goto end;
 492                 if (debug)
 493                         {
 494                         BIO_set_callback(b64,BIO_debug_callback);
 495                         BIO_set_callback_arg(b64,(char *)bio_err);
 496                         }
 497                 if (olb64)
 498                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 499                 if (enc)
 500                         wbio=BIO_push(b64,wbio);
 501                 else
 502                         rbio=BIO_push(b64,rbio);
 503                 }
 504
 505         if (cipher != NULL)
 506                 {
 507                 /* Note that str is NULL if a key was passed on the command
 508                  * line, so we get no salt in that case. Is this a bug?
 509                  */
 510                 if (str != NULL)
 511                         {
 512                         /* Salt handling: if encrypting generate a salt and
 513                          * write to output BIO. If decrypting read salt from
 514                          * input BIO.
 515                          */
 516                         unsigned char *sptr;
 517                         if(nosalt) sptr = NULL;
 518                         else {
 519                                 if(enc) {
 520                                         if(hsalt) {
 521                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 522                                                         BIO_printf(bio_err,
 523                                                                 "invalid hex salt value\n");
 524                                                         goto end;
 525                                                 }
 526                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 527                                                 goto end;
 528                                         /* If -P option then don't bother writing */
 529                                         if((printkey != 2)
 530                                            && (BIO_write(wbio,magic,
 531                                                          sizeof magic-1) != sizeof magic-1
 532                                                || BIO_write(wbio,
 533                                                             (char *)salt,
 534                                                             sizeof salt) != sizeof salt)) {
 535                                                 BIO_printf(bio_err,"error writing output file\n");
 536                                                 goto end;
 537                                         }
 538                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 539                                           || BIO_read(rbio,
 540                                                       (unsigned char *)salt,
 541                                     sizeof salt) != sizeof salt) {
 542                                         BIO_printf(bio_err,"error reading input file\n");
 543                                         goto end;
 544                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 545                                     BIO_printf(bio_err,"bad magic number\n");
 546                                     goto end;
 547                                 }
 548
 549                                 sptr = salt;
 550                         }
 551
 552                         EVP_BytesToKey(cipher,dgst,sptr,
 553                                 (unsigned char *)str,
 554                                 strlen(str),1,key,iv);
 555                         /* zero the complete buffer or the string
 556                          * passed from the command line
 557                          * bug picked up by
 558                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 559                         if (str == strbuf)
 560                                 OPENSSL_cleanse(str,SIZE);
 561                         else
 562                                 OPENSSL_cleanse(str,strlen(str));
 563                         }
 564                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 565                         {
 566                         BIO_printf(bio_err,"invalid hex iv value\n");
 567                         goto end;
 568                         }
 569                 if ((hiv == NULL) && (str == NULL)
 570                     && EVP_CIPHER_iv_length(cipher) != 0)
 571                         {
 572                         /* No IV was explicitly set and no IV was generated
 573                          * during EVP_BytesToKey. Hence the IV is undefined,
 574                          * making correct decryption impossible. */
 575                         BIO_printf(bio_err, "iv undefined\n");
 576                         goto end;
 577                         }
 578                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 579                         {
 580                         BIO_printf(bio_err,"invalid hex key value\n");
 581                         goto end;
 582                         }
 583
 584                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 585                         goto end;
 586
 587                 /* Since we may be changing parameters work on the encryption
 588                  * context rather than calling BIO_set_cipher().
 589                  */
 590
 591                 BIO_get_cipher_ctx(benc, &ctx);
 592                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 593                         {
 594                         BIO_printf(bio_err, "Error setting cipher %s\n",
 595                                 EVP_CIPHER_name(cipher));
 596                         ERR_print_errors(bio_err);
 597                         goto end;
 598                         }
 599
 600                 if (nopad)
 601                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 602
 603                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 604                         {
 605                         BIO_printf(bio_err, "Error setting cipher %s\n",
 606                                 EVP_CIPHER_name(cipher));
 607                         ERR_print_errors(bio_err);
 608                         goto end;
 609                         }
 610
 611                 if (debug)
 612                         {
 613                         BIO_set_callback(benc,BIO_debug_callback);
 614                         BIO_set_callback_arg(benc,(char *)bio_err);
 615                         }
 616
 617                 if (printkey)
 618                         {
 619                         if (!nosalt)
 620                                 {
 621                                 printf("salt=");
 622                                 for (i=0; i<(int)sizeof(salt); i++)
 623                                         printf("%02X",salt[i]);
 624                                 printf("\n");
 625                                 }
 626                         if (cipher->key_len > 0)
 627                                 {
 628                                 printf("key=");
 629                                 for (i=0; i<cipher->key_len; i++)
 630                                         printf("%02X",key[i]);
 631                                 printf("\n");
 632                                 }
 633                         if (cipher->iv_len > 0)
 634                                 {
 635                                 printf("iv =");
 636                                 for (i=0; i<cipher->iv_len; i++)
 637                                         printf("%02X",iv[i]);
 638                                 printf("\n");
 639                                 }
 640                         if (printkey == 2)
 641                                 {
 642                                 ret=0;
 643                                 goto end;
 644                                 }
 645                         }
 646                 }
 647
 648         /* Only encrypt/decrypt as we write the file */
 649         if (benc != NULL)
 650                 wbio=BIO_push(benc,wbio);
 651
 652         for (;;)
 653                 {
 654                 inl=BIO_read(rbio,(char *)buff,bsize);
 655                 if (inl <= 0) break;
 656                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 657                         {
 658                         BIO_printf(bio_err,"error writing output file\n");
 659                         goto end;
 660                         }
 661                 }
 662         if (!BIO_flush(wbio))
 663                 {
 664                 BIO_printf(bio_err,"bad decrypt\n");
 665                 goto end;
 666                 }
 667
 668         ret=0;
 669         if (verbose)
 670                 {
 671                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 672                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 673                 }
 674 end:
 675         ERR_print_errors(bio_err);
 676         if (strbuf != NULL) OPENSSL_free(strbuf);
 677         if (buff != NULL) OPENSSL_free(buff);
 678         if (in != NULL) BIO_free(in);
 679         if (out != NULL) BIO_free_all(out);
 680         if (benc != NULL) BIO_free(benc);
 681         if (b64 != NULL) BIO_free(b64);
 682 #ifdef ZLIB
 683         if (bzl != NULL) BIO_free(bzl);
 684 #endif
 685         if(pass) OPENSSL_free(pass);
 686         apps_shutdown();
 687         OPENSSL_EXIT(ret);
 688         }
 689
 690 int set_hex(char *in, unsigned char *out, int size)
 691         {
 692         int i,n;
 693         unsigned char j;
 694
 695         n=strlen(in);
 696         if (n > (size*2))
 697                 {
 698                 BIO_printf(bio_err,"hex string is too long\n");
 699                 return(0);
 700                 }
 701         memset(out,0,size);
 702         for (i=0; i<n; i++)
 703                 {
 704                 j=(unsigned char)*in;
 705                 *(in++)='\0';
 706                 if (j == 0) break;
 707                 if ((j >= '0') && (j <= '9'))
 708                         j-='0';
 709                 else if ((j >= 'A') && (j <= 'F'))
 710                         j=j-'A'+10;
 711                 else if ((j >= 'a') && (j <= 'f'))
 712                         j=j-'a'+10;
 713                 else
 714                         {
 715                         BIO_printf(bio_err,"non-hex digit\n");
 716                         return(0);
 717                         }
 718                 if (i&1)
 719                         out[i/2]|=j;
 720                 else
 721                         out[i/2]=(j<<4);
 722                 }
 723         return(1);
 724         }