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