apps/enc.c

   1 /* apps/enc.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/evp.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/rand.h>
  69 #ifndef NO_MD5
  70 #include <openssl/md5.h>
  71 #endif
  72 #include <openssl/pem.h>
  73 #include <openssl/engine.h>
  74
  75 int set_hex(char *in,unsigned char *out,int size);
  76 #undef SIZE
  77 #undef BSIZE
  78 #undef PROG
  79
  80 #define SIZE    (512)
  81 #define BSIZE   (8*1024)
  82 #define PROG    enc_main
  83
  84 int MAIN(int, char **);
  85
  86 int MAIN(int argc, char **argv)
  87         {
  88         ENGINE *e = NULL;
  89         static const char magic[]="Salted__";
  90         char mbuf[8];   /* should be 1 smaller than magic */
  91         char *strbuf=NULL;
  92         unsigned char *buff=NULL,*bufsize=NULL;
  93         int bsize=BSIZE,verbose=0;
  94         int ret=1,inl;
  95         unsigned char key[24],iv[MD5_DIGEST_LENGTH];
  96         unsigned char salt[PKCS5_SALT_LEN];
  97         char *str=NULL, *passarg = NULL, *pass = NULL;
  98         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
  99         int enc=1,printkey=0,i,base64=0;
 100         int debug=0,olb64=0,nosalt=0;
 101         const EVP_CIPHER *cipher=NULL,*c;
 102         char *inf=NULL,*outf=NULL;
 103         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 104 #define PROG_NAME_SIZE  16
 105         char pname[PROG_NAME_SIZE];
 106         char *engine = NULL;
 107
 108         apps_startup();
 109
 110         if (bio_err == NULL)
 111                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 112                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 113
 114         /* first check the program name */
 115         program_name(argv[0],pname,PROG_NAME_SIZE);
 116         if (strcmp(pname,"base64") == 0)
 117                 base64=1;
 118
 119         cipher=EVP_get_cipherbyname(pname);
 120         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 121                 {
 122                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 123                 goto bad;
 124                 }
 125
 126         argc--;
 127         argv++;
 128         while (argc >= 1)
 129                 {
 130                 if      (strcmp(*argv,"-e") == 0)
 131                         enc=1;
 132                 else if (strcmp(*argv,"-in") == 0)
 133                         {
 134                         if (--argc < 1) goto bad;
 135                         inf= *(++argv);
 136                         }
 137                 else if (strcmp(*argv,"-out") == 0)
 138                         {
 139                         if (--argc < 1) goto bad;
 140                         outf= *(++argv);
 141                         }
 142                 else if (strcmp(*argv,"-pass") == 0)
 143                         {
 144                         if (--argc < 1) goto bad;
 145                         passarg= *(++argv);
 146                         }
 147                 else if (strcmp(*argv,"-engine") == 0)
 148                         {
 149                         if (--argc < 1) goto bad;
 150                         engine= *(++argv);
 151                         }
 152                 else if (strcmp(*argv,"-d") == 0)
 153                         enc=0;
 154                 else if (strcmp(*argv,"-p") == 0)
 155                         printkey=1;
 156                 else if (strcmp(*argv,"-v") == 0)
 157                         verbose=1;
 158                 else if (strcmp(*argv,"-salt") == 0)
 159                         nosalt=0;
 160                 else if (strcmp(*argv,"-nosalt") == 0)
 161                         nosalt=1;
 162                 else if (strcmp(*argv,"-debug") == 0)
 163                         debug=1;
 164                 else if (strcmp(*argv,"-P") == 0)
 165                         printkey=2;
 166                 else if (strcmp(*argv,"-A") == 0)
 167                         olb64=1;
 168                 else if (strcmp(*argv,"-a") == 0)
 169                         base64=1;
 170                 else if (strcmp(*argv,"-base64") == 0)
 171                         base64=1;
 172                 else if (strcmp(*argv,"-bufsize") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         bufsize=(unsigned char *)*(++argv);
 176                         }
 177                 else if (strcmp(*argv,"-k") == 0)
 178                         {
 179                         if (--argc < 1) goto bad;
 180                         str= *(++argv);
 181                         }
 182                 else if (strcmp(*argv,"-kfile") == 0)
 183                         {
 184                         static char buf[128];
 185                         FILE *infile;
 186                         char *file;
 187
 188                         if (--argc < 1) goto bad;
 189                         file= *(++argv);
 190                         infile=fopen(file,"r");
 191                         if (infile == NULL)
 192                                 {
 193                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 194                                         file);
 195                                 goto bad;
 196                                 }
 197                         buf[0]='\0';
 198                         fgets(buf,128,infile);
 199                         fclose(infile);
 200                         i=strlen(buf);
 201                         if ((i > 0) &&
 202                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 203                                 buf[--i]='\0';
 204                         if ((i > 0) &&
 205                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 206                                 buf[--i]='\0';
 207                         if (i < 1)
 208                                 {
 209                                 BIO_printf(bio_err,"zero length password\n");
 210                                 goto bad;
 211                                 }
 212                         str=buf;
 213                         }
 214                 else if (strcmp(*argv,"-K") == 0)
 215                         {
 216                         if (--argc < 1) goto bad;
 217                         hkey= *(++argv);
 218                         }
 219                 else if (strcmp(*argv,"-S") == 0)
 220                         {
 221                         if (--argc < 1) goto bad;
 222                         hsalt= *(++argv);
 223                         }
 224                 else if (strcmp(*argv,"-iv") == 0)
 225                         {
 226                         if (--argc < 1) goto bad;
 227                         hiv= *(++argv);
 228                         }
 229                 else if ((argv[0][0] == '-') &&
 230                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 231                         {
 232                         cipher=c;
 233                         }
 234                 else if (strcmp(*argv,"-none") == 0)
 235                         cipher=NULL;
 236                 else
 237                         {
 238                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 239 bad:
 240                         BIO_printf(bio_err,"options are\n");
 241                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 242                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 243                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 244                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 245                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 246                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 247                         BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
 248                         BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
 249                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 250                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 251                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 252                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 253
 254                         BIO_printf(bio_err,"Cipher Types\n");
 255                         BIO_printf(bio_err,"des     : 56 bit key DES encryption\n");
 256                         BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n");
 257                         BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n");
 258 #ifndef NO_IDEA
 259                         BIO_printf(bio_err,"idea    :128 bit key IDEA encryption\n");
 260 #endif
 261 #ifndef NO_RC4
 262                         BIO_printf(bio_err,"rc2     :128 bit key RC2 encryption\n");
 263 #endif
 264 #ifndef NO_BF
 265                         BIO_printf(bio_err,"bf      :128 bit key Blowfish encryption\n");
 266 #endif
 267 #ifndef NO_RC4
 268                         BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n",
 269                                 LN_rc4);
 270 #endif
 271
 272                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 273                                 LN_des_ecb,LN_des_cbc,
 274                                 LN_des_cfb64,LN_des_ofb64);
 275                         BIO_printf(bio_err," -%-4s (%s)\n",
 276                                 "des", LN_des_cbc);
 277
 278                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 279                                 LN_des_ede,LN_des_ede_cbc,
 280                                 LN_des_ede_cfb64,LN_des_ede_ofb64);
 281                         BIO_printf(bio_err," -desx -none\n");
 282
 283
 284                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 285                                 LN_des_ede3,LN_des_ede3_cbc,
 286                                 LN_des_ede3_cfb64,LN_des_ede3_ofb64);
 287                         BIO_printf(bio_err," -%-4s (%s)\n",
 288                                 "des3", LN_des_ede3_cbc);
 289
 290 #ifndef NO_IDEA
 291                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 292                                 LN_idea_ecb, LN_idea_cbc,
 293                                 LN_idea_cfb64, LN_idea_ofb64);
 294                         BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc);
 295 #endif
 296 #ifndef NO_RC2
 297                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 298                                 LN_rc2_ecb, LN_rc2_cbc,
 299                                 LN_rc2_cfb64, LN_rc2_ofb64);
 300                         BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc);
 301 #endif
 302 #ifndef NO_BF
 303                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 304                                 LN_bf_ecb, LN_bf_cbc,
 305                                 LN_bf_cfb64, LN_bf_ofb64);
 306                         BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc);
 307 #endif
 308 #ifndef NO_CAST
 309                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 310                                 LN_cast5_ecb, LN_cast5_cbc,
 311                                 LN_cast5_cfb64, LN_cast5_ofb64);
 312                         BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc);
 313 #endif
 314 #ifndef NO_RC5
 315                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 316                                 LN_rc5_ecb, LN_rc5_cbc,
 317                                 LN_rc5_cfb64, LN_rc5_ofb64);
 318                         BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc);
 319 #endif
 320 #ifndef NO_RIJNDAEL
 321                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s\n",
 322                                    LN_rijndael_ecb_k128_b128,"","","","");
 323 #endif
 324
 325                         goto end;
 326                         }
 327                 argc--;
 328                 argv++;
 329                 }
 330
 331         if (engine != NULL)
 332                 {
 333                 if((e = ENGINE_by_id(engine)) == NULL)
 334                         {
 335                         BIO_printf(bio_err,"invalid engine \"%s\"\n",
 336                                 engine);
 337                         goto end;
 338                         }
 339                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 340                         {
 341                         BIO_printf(bio_err,"can't use that engine\n");
 342                         goto end;
 343                         }
 344                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
 345                 /* Free our "structural" reference. */
 346                 ENGINE_free(e);
 347                 }
 348
 349         if (bufsize != NULL)
 350                 {
 351                 unsigned long n;
 352
 353                 for (n=0; *bufsize; bufsize++)
 354                         {
 355                         i= *bufsize;
 356                         if ((i <= '9') && (i >= '0'))
 357                                 n=n*10+i-'0';
 358                         else if (i == 'k')
 359                                 {
 360                                 n*=1024;
 361                                 bufsize++;
 362                                 break;
 363                                 }
 364                         }
 365                 if (*bufsize != '\0')
 366                         {
 367                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 368                         goto end;
 369                         }
 370
 371                 /* It must be large enough for a base64 encoded line */
 372                 if (n < 80) n=80;
 373
 374                 bsize=(int)n;
 375                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 376                 }
 377
 378         strbuf=OPENSSL_malloc(SIZE);
 379         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 380         if ((buff == NULL) || (strbuf == NULL))
 381                 {
 382                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 383                 goto end;
 384                 }
 385
 386         in=BIO_new(BIO_s_file());
 387         out=BIO_new(BIO_s_file());
 388         if ((in == NULL) || (out == NULL))
 389                 {
 390                 ERR_print_errors(bio_err);
 391                 goto end;
 392                 }
 393         if (debug)
 394                 {
 395                 BIO_set_callback(in,BIO_debug_callback);
 396                 BIO_set_callback(out,BIO_debug_callback);
 397                 BIO_set_callback_arg(in,bio_err);
 398                 BIO_set_callback_arg(out,bio_err);
 399                 }
 400
 401         if (inf == NULL)
 402                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 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                         sprintf(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 #ifdef VMS
 454                 {
 455                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 456                 out = BIO_push(tmpbio, out);
 457                 }
 458 #endif
 459                 }
 460         else
 461                 {
 462                 if (BIO_write_filename(out,outf) <= 0)
 463                         {
 464                         perror(outf);
 465                         goto end;
 466                         }
 467                 }
 468
 469         rbio=in;
 470         wbio=out;
 471
 472         if (base64)
 473                 {
 474                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 475                         goto end;
 476                 if (debug)
 477                         {
 478                         BIO_set_callback(b64,BIO_debug_callback);
 479                         BIO_set_callback_arg(b64,bio_err);
 480                         }
 481                 if (olb64)
 482                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 483                 if (enc)
 484                         wbio=BIO_push(b64,wbio);
 485                 else
 486                         rbio=BIO_push(b64,rbio);
 487                 }
 488
 489         if (cipher != NULL)
 490                 {
 491                 if (str != NULL)
 492                         {
 493                         /* Salt handling: if encrypting generate a salt and
 494                          * write to output BIO. If decrypting read salt from
 495                          * input BIO.
 496                          */
 497                         unsigned char *sptr;
 498                         if(nosalt) sptr = NULL;
 499                         else {
 500                                 if(enc) {
 501                                         if(hsalt) {
 502                                                 if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
 503                                                         BIO_printf(bio_err,
 504                                                                 "invalid hex salt value\n");
 505                                                         goto end;
 506                                                 }
 507                                         } else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
 508                                                 goto end;
 509                                         /* If -P option then don't bother writing */
 510                                         if((printkey != 2)
 511                                            && (BIO_write(wbio,magic,
 512                                                          sizeof magic-1) != sizeof magic-1
 513                                                || BIO_write(wbio,
 514                                                             (char *)salt,
 515                                                             PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
 516                                                 BIO_printf(bio_err,"error writing output file\n");
 517                                                 goto end;
 518                                         }
 519                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 520                                           || BIO_read(rbio,
 521                                                       (unsigned char *)salt,
 522                                     PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
 523                                         BIO_printf(bio_err,"error reading input file\n");
 524                                         goto end;
 525                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 526                                     BIO_printf(bio_err,"bad magic number\n");
 527                                     goto end;
 528                                 }
 529
 530                                 sptr = salt;
 531                         }
 532
 533                         EVP_BytesToKey(cipher,EVP_md5(),sptr,
 534                                 (unsigned char *)str,
 535                                 strlen(str),1,key,iv);
 536                         /* zero the complete buffer or the string
 537                          * passed from the command line
 538                          * bug picked up by
 539                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 540                         if (str == strbuf)
 541                                 memset(str,0,SIZE);
 542                         else
 543                                 memset(str,0,strlen(str));
 544                         }
 545                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
 546                         {
 547                         BIO_printf(bio_err,"invalid hex iv value\n");
 548                         goto end;
 549                         }
 550                 if ((hkey != NULL) && !set_hex(hkey,key,24))
 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                 BIO_set_cipher(benc,cipher,key,iv,enc);
 559                 if (debug)
 560                         {
 561                         BIO_set_callback(benc,BIO_debug_callback);
 562                         BIO_set_callback_arg(benc,bio_err);
 563                         }
 564
 565                 if (printkey)
 566                         {
 567                         if (!nosalt)
 568                                 {
 569                                 printf("salt=");
 570                                 for (i=0; i<PKCS5_SALT_LEN; i++)
 571                                         printf("%02X",salt[i]);
 572                                 printf("\n");
 573                                 }
 574                         if (cipher->key_len > 0)
 575                                 {
 576                                 printf("key=");
 577                                 for (i=0; i<cipher->key_len; i++)
 578                                         printf("%02X",key[i]);
 579                                 printf("\n");
 580                                 }
 581                         if (cipher->iv_len > 0)
 582                                 {
 583                                 printf("iv =");
 584                                 for (i=0; i<cipher->iv_len; i++)
 585                                         printf("%02X",iv[i]);
 586                                 printf("\n");
 587                                 }
 588                         if (printkey == 2)
 589                                 {
 590                                 ret=0;
 591                                 goto end;
 592                                 }
 593                         }
 594                 }
 595
 596         /* Only encrypt/decrypt as we write the file */
 597         if (benc != NULL)
 598                 wbio=BIO_push(benc,wbio);
 599
 600         for (;;)
 601                 {
 602                 inl=BIO_read(rbio,(char *)buff,bsize);
 603                 if (inl <= 0) break;
 604                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 605                         {
 606                         BIO_printf(bio_err,"error writing output file\n");
 607                         goto end;
 608                         }
 609                 }
 610         if (!BIO_flush(wbio))
 611                 {
 612                 BIO_printf(bio_err,"bad decrypt\n");
 613                 goto end;
 614                 }
 615
 616         ret=0;
 617         if (verbose)
 618                 {
 619                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 620                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 621                 }
 622 end:
 623         ERR_print_errors(bio_err);
 624         if (strbuf != NULL) OPENSSL_free(strbuf);
 625         if (buff != NULL) OPENSSL_free(buff);
 626         if (in != NULL) BIO_free(in);
 627         if (out != NULL) BIO_free_all(out);
 628         if (benc != NULL) BIO_free(benc);
 629         if (b64 != NULL) BIO_free(b64);
 630         if(pass) OPENSSL_free(pass);
 631         EXIT(ret);
 632         }
 633
 634 int set_hex(char *in, unsigned char *out, int size)
 635         {
 636         int i,n;
 637         unsigned char j;
 638
 639         n=strlen(in);
 640         if (n > (size*2))
 641                 {
 642                 BIO_printf(bio_err,"hex string is too long\n");
 643                 return(0);
 644                 }
 645         memset(out,0,size);
 646         for (i=0; i<n; i++)
 647                 {
 648                 j=(unsigned char)*in;
 649                 *(in++)='\0';
 650                 if (j == 0) break;
 651                 if ((j >= '0') && (j <= '9'))
 652                         j-='0';
 653                 else if ((j >= 'A') && (j <= 'F'))
 654                         j=j-'A'+10;
 655                 else if ((j >= 'a') && (j <= 'f'))
 656                         j=j-'a'+10;
 657                 else
 658                         {
 659                         BIO_printf(bio_err,"non-hex digit\n");
 660                         return(0);
 661                         }
 662                 if (i&1)
 663                         out[i/2]|=j;
 664                 else
 665                         out[i/2]=(j<<4);
 666                 }
 667         return(1);
 668         }