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 <ctype.h>
  71
  72 int set_hex(char *in,unsigned char *out,int size);
  73 #undef SIZE
  74 #undef BSIZE
  75 #undef PROG
  76
  77 #define SIZE    (512)
  78 #define BSIZE   (8*1024)
  79 #define PROG    enc_main
  80
  81 static void show_ciphers(const OBJ_NAME *name,void *bio_)
  82         {
  83         BIO *bio=bio_;
  84         static int n;
  85
  86         if(!islower((unsigned char)*name->name))
  87                 return;
  88
  89         BIO_printf(bio,"-%-25s",name->name);
  90         if(++n == 3)
  91                 {
  92                 BIO_printf(bio,"\n");
  93                 n=0;
  94                 }
  95         else
  96                 BIO_printf(bio," ");
  97         }
  98
  99 int MAIN(int, char **);
 100
 101 int MAIN(int argc, char **argv)
 102         {
 103 #ifndef OPENSSL_NO_ENGINE
 104         ENGINE *e = NULL;
 105 #endif
 106         static const char magic[]="Salted__";
 107         char mbuf[sizeof magic-1];
 108         char *strbuf=NULL;
 109         unsigned char *buff=NULL,*bufsize=NULL;
 110         int bsize=BSIZE,verbose=0;
 111         int ret=1,inl;
 112         int nopad = 0;
 113         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 114         unsigned char salt[PKCS5_SALT_LEN];
 115         char *str=NULL, *passarg = NULL, *pass = NULL;
 116         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 117         char *md=NULL;
 118         int enc=1,printkey=0,i,base64=0;
 119         int debug=0,olb64=0,nosalt=0;
 120         const EVP_CIPHER *cipher=NULL,*c;
 121         EVP_CIPHER_CTX *ctx = NULL;
 122         char *inf=NULL,*outf=NULL;
 123         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 124 #define PROG_NAME_SIZE  39
 125         char pname[PROG_NAME_SIZE+1];
 126 #ifndef OPENSSL_NO_ENGINE
 127         char *engine = NULL;
 128 #endif
 129         const EVP_MD *dgst=NULL;
 130         int non_fips_allow = 0;
 131
 132         apps_startup();
 133
 134         if (bio_err == NULL)
 135                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 136                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 137
 138         if (!load_config(bio_err, NULL))
 139                 goto end;
 140
 141         /* first check the program name */
 142         program_name(argv[0],pname,sizeof pname);
 143         if (strcmp(pname,"base64") == 0)
 144                 base64=1;
 145
 146         cipher=EVP_get_cipherbyname(pname);
 147         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 148                 {
 149                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 150                 goto bad;
 151                 }
 152
 153         argc--;
 154         argv++;
 155         while (argc >= 1)
 156                 {
 157                 if      (strcmp(*argv,"-e") == 0)
 158                         enc=1;
 159                 else if (strcmp(*argv,"-in") == 0)
 160                         {
 161                         if (--argc < 1) goto bad;
 162                         inf= *(++argv);
 163                         }
 164                 else if (strcmp(*argv,"-out") == 0)
 165                         {
 166                         if (--argc < 1) goto bad;
 167                         outf= *(++argv);
 168                         }
 169                 else if (strcmp(*argv,"-pass") == 0)
 170                         {
 171                         if (--argc < 1) goto bad;
 172                         passarg= *(++argv);
 173                         }
 174 #ifndef OPENSSL_NO_ENGINE
 175                 else if (strcmp(*argv,"-engine") == 0)
 176                         {
 177                         if (--argc < 1) goto bad;
 178                         engine= *(++argv);
 179                         }
 180 #endif
 181                 else if (strcmp(*argv,"-d") == 0)
 182                         enc=0;
 183                 else if (strcmp(*argv,"-p") == 0)
 184                         printkey=1;
 185                 else if (strcmp(*argv,"-v") == 0)
 186                         verbose=1;
 187                 else if (strcmp(*argv,"-nopad") == 0)
 188                         nopad=1;
 189                 else if (strcmp(*argv,"-salt") == 0)
 190                         nosalt=0;
 191                 else if (strcmp(*argv,"-nosalt") == 0)
 192                         nosalt=1;
 193                 else if (strcmp(*argv,"-debug") == 0)
 194                         debug=1;
 195                 else if (strcmp(*argv,"-P") == 0)
 196                         printkey=2;
 197                 else if (strcmp(*argv,"-A") == 0)
 198                         olb64=1;
 199                 else if (strcmp(*argv,"-a") == 0)
 200                         base64=1;
 201                 else if (strcmp(*argv,"-base64") == 0)
 202                         base64=1;
 203                 else if (strcmp(*argv,"-bufsize") == 0)
 204                         {
 205                         if (--argc < 1) goto bad;
 206                         bufsize=(unsigned char *)*(++argv);
 207                         }
 208                 else if (strcmp(*argv,"-k") == 0)
 209                         {
 210                         if (--argc < 1) goto bad;
 211                         str= *(++argv);
 212                         }
 213                 else if (strcmp(*argv,"-kfile") == 0)
 214                         {
 215                         static char buf[128];
 216                         FILE *infile;
 217                         char *file;
 218
 219                         if (--argc < 1) goto bad;
 220                         file= *(++argv);
 221                         infile=fopen(file,"r");
 222                         if (infile == NULL)
 223                                 {
 224                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 225                                         file);
 226                                 goto bad;
 227                                 }
 228                         buf[0]='\0';
 229                         if (!fgets(buf,sizeof buf,infile))
 230                                 {
 231                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 232                                         file);
 233                                 goto bad;
 234                                 }
 235                         fclose(infile);
 236                         i=strlen(buf);
 237                         if ((i > 0) &&
 238                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 239                                 buf[--i]='\0';
 240                         if ((i > 0) &&
 241                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 242                                 buf[--i]='\0';
 243                         if (i < 1)
 244                                 {
 245                                 BIO_printf(bio_err,"zero length password\n");
 246                                 goto bad;
 247                                 }
 248                         str=buf;
 249                         }
 250                 else if (strcmp(*argv,"-K") == 0)
 251                         {
 252                         if (--argc < 1) goto bad;
 253                         hkey= *(++argv);
 254                         }
 255                 else if (strcmp(*argv,"-S") == 0)
 256                         {
 257                         if (--argc < 1) goto bad;
 258                         hsalt= *(++argv);
 259                         }
 260                 else if (strcmp(*argv,"-iv") == 0)
 261                         {
 262                         if (--argc < 1) goto bad;
 263                         hiv= *(++argv);
 264                         }
 265                 else if (strcmp(*argv,"-md") == 0)
 266                         {
 267                         if (--argc < 1) goto bad;
 268                         md= *(++argv);
 269                         }
 270                 else if (strcmp(*argv,"-non-fips-allow") == 0)
 271                         non_fips_allow = 1;
 272                 else if ((argv[0][0] == '-') &&
 273                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 274                         {
 275                         cipher=c;
 276                         }
 277                 else if (strcmp(*argv,"-none") == 0)
 278                         cipher=NULL;
 279                 else
 280                         {
 281                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 282 bad:
 283                         BIO_printf(bio_err,"options are\n");
 284                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 285                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 286                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 287                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 288                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 289                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 290                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 291                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 292                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 293                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 294                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 295                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 296                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 297 #ifndef OPENSSL_NO_ENGINE
 298                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 299 #endif
 300
 301                         BIO_printf(bio_err,"Cipher Types\n");
 302                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 303                                                show_ciphers,
 304                                                bio_err);
 305                         BIO_printf(bio_err,"\n");
 306
 307                         goto end;
 308                         }
 309                 argc--;
 310                 argv++;
 311                 }
 312
 313 #ifndef OPENSSL_NO_ENGINE
 314         e = setup_engine(bio_err, engine, 0);
 315 #endif
 316
 317         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 318                 {
 319                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 320                 goto end;
 321                 }
 322
 323         if (dgst == NULL)
 324                 {
 325                 if (in_FIPS_mode)
 326                         dgst = EVP_sha1();
 327                 else
 328                         dgst = EVP_md5();
 329                 }
 330
 331         if (bufsize != NULL)
 332                 {
 333                 unsigned long n;
 334
 335                 for (n=0; *bufsize; bufsize++)
 336                         {
 337                         i= *bufsize;
 338                         if ((i <= '9') && (i >= '0'))
 339                                 n=n*10+i-'0';
 340                         else if (i == 'k')
 341                                 {
 342                                 n*=1024;
 343                                 bufsize++;
 344                                 break;
 345                                 }
 346                         }
 347                 if (*bufsize != '\0')
 348                         {
 349                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 350                         goto end;
 351                         }
 352
 353                 /* It must be large enough for a base64 encoded line */
 354                 if (base64 && n < 80) n=80;
 355
 356                 bsize=(int)n;
 357                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 358                 }
 359
 360         strbuf=OPENSSL_malloc(SIZE);
 361         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 362         if ((buff == NULL) || (strbuf == NULL))
 363                 {
 364                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 365                 goto end;
 366                 }
 367
 368         in=BIO_new(BIO_s_file());
 369         out=BIO_new(BIO_s_file());
 370         if ((in == NULL) || (out == NULL))
 371                 {
 372                 ERR_print_errors(bio_err);
 373                 goto end;
 374                 }
 375         if (debug)
 376                 {
 377                 BIO_set_callback(in,BIO_debug_callback);
 378                 BIO_set_callback(out,BIO_debug_callback);
 379                 BIO_set_callback_arg(in,(char *)bio_err);
 380                 BIO_set_callback_arg(out,(char *)bio_err);
 381                 }
 382
 383         if (inf == NULL)
 384                 {
 385                 if (bufsize != NULL)
 386                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 387                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 388                 }
 389         else
 390                 {
 391                 if (BIO_read_filename(in,inf) <= 0)
 392                         {
 393                         perror(inf);
 394                         goto end;
 395                         }
 396                 }
 397
 398         if(!str && passarg) {
 399                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 400                         BIO_printf(bio_err, "Error getting password\n");
 401                         goto end;
 402                 }
 403                 str = pass;
 404         }
 405
 406         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 407                 {
 408                 for (;;)
 409                         {
 410                         char buf[200];
 411
 412                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 413                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 414                                      (enc)?"encryption":"decryption");
 415                         strbuf[0]='\0';
 416                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 417                         if (i == 0)
 418                                 {
 419                                 if (strbuf[0] == '\0')
 420                                         {
 421                                         ret=1;
 422                                         goto end;
 423                                         }
 424                                 str=strbuf;
 425                                 break;
 426                                 }
 427                         if (i < 0)
 428                                 {
 429                                 BIO_printf(bio_err,"bad password read\n");
 430                                 goto end;
 431                                 }
 432                         }
 433                 }
 434
 435
 436         if (outf == NULL)
 437                 {
 438                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 439                 if (bufsize != NULL)
 440                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 441 #ifdef OPENSSL_SYS_VMS
 442                 {
 443                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 444                 out = BIO_push(tmpbio, out);
 445                 }
 446 #endif
 447                 }
 448         else
 449                 {
 450                 if (BIO_write_filename(out,outf) <= 0)
 451                         {
 452                         perror(outf);
 453                         goto end;
 454                         }
 455                 }
 456
 457         rbio=in;
 458         wbio=out;
 459
 460         if (base64)
 461                 {
 462                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 463                         goto end;
 464                 if (debug)
 465                         {
 466                         BIO_set_callback(b64,BIO_debug_callback);
 467                         BIO_set_callback_arg(b64,(char *)bio_err);
 468                         }
 469                 if (olb64)
 470                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 471                 if (enc)
 472                         wbio=BIO_push(b64,wbio);
 473                 else
 474                         rbio=BIO_push(b64,rbio);
 475                 }
 476
 477         if (cipher != NULL)
 478                 {
 479                 /* Note that str is NULL if a key was passed on the command
 480                  * line, so we get no salt in that case. Is this a bug?
 481                  */
 482                 if (str != NULL)
 483                         {
 484                         /* Salt handling: if encrypting generate a salt and
 485                          * write to output BIO. If decrypting read salt from
 486                          * input BIO.
 487                          */
 488                         unsigned char *sptr;
 489                         if(nosalt) sptr = NULL;
 490                         else {
 491                                 if(enc) {
 492                                         if(hsalt) {
 493                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 494                                                         BIO_printf(bio_err,
 495                                                                 "invalid hex salt value\n");
 496                                                         goto end;
 497                                                 }
 498                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 499                                                 goto end;
 500                                         /* If -P option then don't bother writing */
 501                                         if((printkey != 2)
 502                                            && (BIO_write(wbio,magic,
 503                                                          sizeof magic-1) != sizeof magic-1
 504                                                || BIO_write(wbio,
 505                                                             (char *)salt,
 506                                                             sizeof salt) != sizeof salt)) {
 507                                                 BIO_printf(bio_err,"error writing output file\n");
 508                                                 goto end;
 509                                         }
 510                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 511                                           || BIO_read(rbio,
 512                                                       (unsigned char *)salt,
 513                                     sizeof salt) != sizeof salt) {
 514                                         BIO_printf(bio_err,"error reading input file\n");
 515                                         goto end;
 516                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 517                                     BIO_printf(bio_err,"bad magic number\n");
 518                                     goto end;
 519                                 }
 520
 521                                 sptr = salt;
 522                         }
 523
 524                         EVP_BytesToKey(cipher,dgst,sptr,
 525                                 (unsigned char *)str,
 526                                 strlen(str),1,key,iv);
 527                         /* zero the complete buffer or the string
 528                          * passed from the command line
 529                          * bug picked up by
 530                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 531                         if (str == strbuf)
 532                                 OPENSSL_cleanse(str,SIZE);
 533                         else
 534                                 OPENSSL_cleanse(str,strlen(str));
 535                         }
 536                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 537                         {
 538                         BIO_printf(bio_err,"invalid hex iv value\n");
 539                         goto end;
 540                         }
 541                 if ((hiv == NULL) && (str == NULL)
 542                     && EVP_CIPHER_iv_length(cipher) != 0)
 543                         {
 544                         /* No IV was explicitly set and no IV was generated
 545                          * during EVP_BytesToKey. Hence the IV is undefined,
 546                          * making correct decryption impossible. */
 547                         BIO_printf(bio_err, "iv undefined\n");
 548                         goto end;
 549                         }
 550                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 551                         {
 552                         BIO_printf(bio_err,"invalid hex key value\n");
 553                         goto end;
 554                         }
 555
 556                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 557                         goto end;
 558
 559                 /* Since we may be changing parameters work on the encryption
 560                  * context rather than calling BIO_set_cipher().
 561                  */
 562
 563                 BIO_get_cipher_ctx(benc, &ctx);
 564
 565                 if (non_fips_allow)
 566                         EVP_CIPHER_CTX_set_flags(ctx,
 567                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 568
 569                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 570                         {
 571                         BIO_printf(bio_err, "Error setting cipher %s\n",
 572                                 EVP_CIPHER_name(cipher));
 573                         ERR_print_errors(bio_err);
 574                         goto end;
 575                         }
 576
 577                 if (nopad)
 578                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 579
 580                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 581                         {
 582                         BIO_printf(bio_err, "Error setting cipher %s\n",
 583                                 EVP_CIPHER_name(cipher));
 584                         ERR_print_errors(bio_err);
 585                         goto end;
 586                         }
 587
 588                 if (debug)
 589                         {
 590                         BIO_set_callback(benc,BIO_debug_callback);
 591                         BIO_set_callback_arg(benc,(char *)bio_err);
 592                         }
 593
 594                 if (printkey)
 595                         {
 596                         if (!nosalt)
 597                                 {
 598                                 printf("salt=");
 599                                 for (i=0; i<(int)sizeof(salt); i++)
 600                                         printf("%02X",salt[i]);
 601                                 printf("\n");
 602                                 }
 603                         if (cipher->key_len > 0)
 604                                 {
 605                                 printf("key=");
 606                                 for (i=0; i<cipher->key_len; i++)
 607                                         printf("%02X",key[i]);
 608                                 printf("\n");
 609                                 }
 610                         if (cipher->iv_len > 0)
 611                                 {
 612                                 printf("iv =");
 613                                 for (i=0; i<cipher->iv_len; i++)
 614                                         printf("%02X",iv[i]);
 615                                 printf("\n");
 616                                 }
 617                         if (printkey == 2)
 618                                 {
 619                                 ret=0;
 620                                 goto end;
 621                                 }
 622                         }
 623                 }
 624
 625         /* Only encrypt/decrypt as we write the file */
 626         if (benc != NULL)
 627                 wbio=BIO_push(benc,wbio);
 628
 629         for (;;)
 630                 {
 631                 inl=BIO_read(rbio,(char *)buff,bsize);
 632                 if (inl <= 0) break;
 633                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 634                         {
 635                         BIO_printf(bio_err,"error writing output file\n");
 636                         goto end;
 637                         }
 638                 }
 639         if (!BIO_flush(wbio))
 640                 {
 641                 BIO_printf(bio_err,"bad decrypt\n");
 642                 goto end;
 643                 }
 644
 645         ret=0;
 646         if (verbose)
 647                 {
 648                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 649                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 650                 }
 651 end:
 652         ERR_print_errors(bio_err);
 653         if (strbuf != NULL) OPENSSL_free(strbuf);
 654         if (buff != NULL) OPENSSL_free(buff);
 655         if (in != NULL) BIO_free(in);
 656         if (out != NULL) BIO_free_all(out);
 657         if (benc != NULL) BIO_free(benc);
 658         if (b64 != NULL) BIO_free(b64);
 659         if(pass) OPENSSL_free(pass);
 660         apps_shutdown();
 661         OPENSSL_EXIT(ret);
 662         }
 663
 664 int set_hex(char *in, unsigned char *out, int size)
 665         {
 666         int i,n;
 667         unsigned char j;
 668
 669         n=strlen(in);
 670         if (n > (size*2))
 671                 {
 672                 BIO_printf(bio_err,"hex string is too long\n");
 673                 return(0);
 674                 }
 675         memset(out,0,size);
 676         for (i=0; i<n; i++)
 677                 {
 678                 j=(unsigned char)*in;
 679                 *(in++)='\0';
 680                 if (j == 0) break;
 681                 if ((j >= '0') && (j <= '9'))
 682                         j-='0';
 683                 else if ((j >= 'A') && (j <= 'F'))
 684                         j=j-'A'+10;
 685                 else if ((j >= 'a') && (j <= 'f'))
 686                         j=j-'a'+10;
 687                 else
 688                         {
 689                         BIO_printf(bio_err,"non-hex digit\n");
 690                         return(0);
 691                         }
 692                 if (i&1)
 693                         out[i/2]|=j;
 694                 else
 695                         out[i/2]=(j<<4);
 696                 }
 697         return(1);
 698         }