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
  74 int set_hex(char *in,unsigned char *out,int size);
  75 #undef SIZE
  76 #undef BSIZE
  77 #undef PROG
  78
  79 #define SIZE    (512)
  80 #define BSIZE   (8*1024)
  81 #define PROG    enc_main
  82
  83 int MAIN(int argc, char **argv)
  84         {
  85         char *strbuf=NULL;
  86         unsigned char *buff=NULL,*bufsize=NULL;
  87         int bsize=BSIZE,verbose=0;
  88         int ret=1,inl;
  89         unsigned char key[24],iv[MD5_DIGEST_LENGTH];
  90         unsigned char salt[PKCS5_SALT_LEN];
  91         char *str=NULL;
  92         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
  93         int enc=1,printkey=0,i,base64=0;
  94         int debug=0,olb64=0,nosalt=1;
  95         const EVP_CIPHER *cipher=NULL,*c;
  96         char *inf=NULL,*outf=NULL;
  97         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
  98 #define PROG_NAME_SIZE  16
  99         char pname[PROG_NAME_SIZE];
 100
 101         apps_startup();
 102
 103         if (bio_err == NULL)
 104                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 105                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 106
 107         /* first check the program name */
 108         program_name(argv[0],pname,PROG_NAME_SIZE);
 109         if (strcmp(pname,"base64") == 0)
 110                 base64=1;
 111
 112         cipher=EVP_get_cipherbyname(pname);
 113         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 114                 {
 115                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 116                 goto bad;
 117                 }
 118
 119         argc--;
 120         argv++;
 121         while (argc >= 1)
 122                 {
 123                 if      (strcmp(*argv,"-e") == 0)
 124                         enc=1;
 125                 else if (strcmp(*argv,"-in") == 0)
 126                         {
 127                         if (--argc < 1) goto bad;
 128                         inf= *(++argv);
 129                         }
 130                 else if (strcmp(*argv,"-out") == 0)
 131                         {
 132                         if (--argc < 1) goto bad;
 133                         outf= *(++argv);
 134                         }
 135                 else if (strcmp(*argv,"-d") == 0)
 136                         enc=0;
 137                 else if (strcmp(*argv,"-p") == 0)
 138                         printkey=1;
 139                 else if (strcmp(*argv,"-v") == 0)
 140                         verbose=1;
 141                 else if (strcmp(*argv,"-salt") == 0)
 142                         nosalt=0;
 143                 else if (strcmp(*argv,"-nosalt") == 0)
 144                         nosalt=1;
 145                 else if (strcmp(*argv,"-debug") == 0)
 146                         debug=1;
 147                 else if (strcmp(*argv,"-P") == 0)
 148                         printkey=2;
 149                 else if (strcmp(*argv,"-A") == 0)
 150                         olb64=1;
 151                 else if (strcmp(*argv,"-a") == 0)
 152                         base64=1;
 153                 else if (strcmp(*argv,"-base64") == 0)
 154                         base64=1;
 155                 else if (strcmp(*argv,"-bufsize") == 0)
 156                         {
 157                         if (--argc < 1) goto bad;
 158                         bufsize=(unsigned char *)*(++argv);
 159                         }
 160                 else if (strcmp(*argv,"-k") == 0)
 161                         {
 162                         if (--argc < 1) goto bad;
 163                         str= *(++argv);
 164                         }
 165                 else if (strcmp(*argv,"-kfile") == 0)
 166                         {
 167                         static char buf[128];
 168                         FILE *infile;
 169                         char *file;
 170
 171                         if (--argc < 1) goto bad;
 172                         file= *(++argv);
 173                         infile=fopen(file,"r");
 174                         if (infile == NULL)
 175                                 {
 176                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 177                                         file);
 178                                 goto bad;
 179                                 }
 180                         buf[0]='\0';
 181                         fgets(buf,128,infile);
 182                         fclose(infile);
 183                         i=strlen(buf);
 184                         if ((i > 0) &&
 185                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 186                                 buf[--i]='\0';
 187                         if ((i > 0) &&
 188                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 189                                 buf[--i]='\0';
 190                         if (i < 1)
 191                                 {
 192                                 BIO_printf(bio_err,"zero length password\n");
 193                                 goto bad;
 194                                 }
 195                         str=buf;
 196                         }
 197                 else if (strcmp(*argv,"-K") == 0)
 198                         {
 199                         if (--argc < 1) goto bad;
 200                         hkey= *(++argv);
 201                         }
 202                 else if (strcmp(*argv,"-S") == 0)
 203                         {
 204                         if (--argc < 1) goto bad;
 205                         hsalt= *(++argv);
 206                         }
 207                 else if (strcmp(*argv,"-iv") == 0)
 208                         {
 209                         if (--argc < 1) goto bad;
 210                         hiv= *(++argv);
 211                         }
 212                 else if ((argv[0][0] == '-') &&
 213                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 214                         {
 215                         cipher=c;
 216                         }
 217                 else if (strcmp(*argv,"-none") == 0)
 218                         cipher=NULL;
 219                 else
 220                         {
 221                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 222 bad:
 223                         BIO_printf(bio_err,"options are\n");
 224                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 225                         BIO_printf(bio_err,"%-14s output fileencrypt\n","-out <file>");
 226                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 227                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 228                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 229                         BIO_printf(bio_err,"%-14s key is the next argument\n","-k");
 230                         BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile");
 231                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 232                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 233                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 234
 235                         BIO_printf(bio_err,"Cipher Types\n");
 236                         BIO_printf(bio_err,"des     : 56 bit key DES encryption\n");
 237                         BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n");
 238                         BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n");
 239 #ifndef NO_IDEA
 240                         BIO_printf(bio_err,"idea    :128 bit key IDEA encryption\n");
 241 #endif
 242 #ifndef NO_RC4
 243                         BIO_printf(bio_err,"rc2     :128 bit key RC2 encryption\n");
 244 #endif
 245 #ifndef NO_BF
 246                         BIO_printf(bio_err,"bf      :128 bit key BlowFish encryption\n");
 247 #endif
 248 #ifndef NO_RC4
 249                         BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n",
 250                                 LN_rc4);
 251 #endif
 252
 253                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 254                                 LN_des_ecb,LN_des_cbc,
 255                                 LN_des_cfb64,LN_des_ofb64);
 256                         BIO_printf(bio_err," -%-4s (%s)\n",
 257                                 "des", LN_des_cbc);
 258
 259                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 260                                 LN_des_ede,LN_des_ede_cbc,
 261                                 LN_des_ede_cfb64,LN_des_ede_ofb64);
 262                         BIO_printf(bio_err," -desx -none\n");
 263
 264
 265                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 266                                 LN_des_ede3,LN_des_ede3_cbc,
 267                                 LN_des_ede3_cfb64,LN_des_ede3_ofb64);
 268                         BIO_printf(bio_err," -%-4s (%s)\n",
 269                                 "des3", LN_des_ede3_cbc);
 270
 271 #ifndef NO_IDEA
 272                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 273                                 LN_idea_ecb, LN_idea_cbc,
 274                                 LN_idea_cfb64, LN_idea_ofb64);
 275                         BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc);
 276 #endif
 277 #ifndef NO_RC2
 278                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 279                                 LN_rc2_ecb, LN_rc2_cbc,
 280                                 LN_rc2_cfb64, LN_rc2_ofb64);
 281                         BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc);
 282 #endif
 283 #ifndef NO_BF
 284                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 285                                 LN_bf_ecb, LN_bf_cbc,
 286                                 LN_bf_cfb64, LN_bf_ofb64);
 287                         BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc);
 288 #endif
 289 #ifndef NO_CAST
 290                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 291                                 LN_cast5_ecb, LN_cast5_cbc,
 292                                 LN_cast5_cfb64, LN_cast5_ofb64);
 293                         BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc);
 294 #endif
 295 #ifndef NO_RC5
 296                         BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s",
 297                                 LN_rc5_ecb, LN_rc5_cbc,
 298                                 LN_rc5_cfb64, LN_rc5_ofb64);
 299                         BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc);
 300 #endif
 301                         goto end;
 302                         }
 303                 argc--;
 304                 argv++;
 305                 }
 306
 307         if (bufsize != NULL)
 308                 {
 309                 unsigned long n;
 310
 311                 for (n=0; *bufsize; bufsize++)
 312                         {
 313                         i= *bufsize;
 314                         if ((i <= '9') && (i >= '0'))
 315                                 n=n*10+i-'0';
 316                         else if (i == 'k')
 317                                 {
 318                                 n*=1024;
 319                                 bufsize++;
 320                                 break;
 321                                 }
 322                         }
 323                 if (*bufsize != '\0')
 324                         {
 325                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 326                         goto end;
 327                         }
 328
 329                 /* It must be large enough for a base64 encoded line */
 330                 if (n < 80) n=80;
 331
 332                 bsize=(int)n;
 333                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 334                 }
 335
 336         strbuf=Malloc(SIZE);
 337         buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize));
 338         if ((buff == NULL) || (strbuf == NULL))
 339                 {
 340                 BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 341                 goto end;
 342                 }
 343
 344         in=BIO_new(BIO_s_file());
 345         out=BIO_new(BIO_s_file());
 346         if ((in == NULL) || (out == NULL))
 347                 {
 348                 ERR_print_errors(bio_err);
 349                 goto end;
 350                 }
 351         if (debug)
 352                 {
 353                 BIO_set_callback(in,BIO_debug_callback);
 354                 BIO_set_callback(out,BIO_debug_callback);
 355                 BIO_set_callback_arg(in,bio_err);
 356                 BIO_set_callback_arg(out,bio_err);
 357                 }
 358
 359         if (inf == NULL)
 360                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 361         else
 362                 {
 363                 if (BIO_read_filename(in,inf) <= 0)
 364                         {
 365                         perror(inf);
 366                         goto end;
 367                         }
 368                 }
 369
 370         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 371                 {
 372                 for (;;)
 373                         {
 374                         char buf[200];
 375
 376                         sprintf(buf,"enter %s %s password:",
 377                                 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 378                                 (enc)?"encryption":"decryption");
 379                         strbuf[0]='\0';
 380                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 381                         if (i == 0)
 382                                 {
 383                                 if (strbuf[0] == '\0')
 384                                         {
 385                                         ret=1;
 386                                         goto end;
 387                                         }
 388                                 str=strbuf;
 389                                 break;
 390                                 }
 391                         if (i < 0)
 392                                 {
 393                                 BIO_printf(bio_err,"bad password read\n");
 394                                 goto end;
 395                                 }
 396                         }
 397                 }
 398
 399
 400         if (outf == NULL)
 401                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 402         else
 403                 {
 404                 if (BIO_write_filename(out,outf) <= 0)
 405                         {
 406                         perror(outf);
 407                         goto end;
 408                         }
 409                 }
 410
 411         rbio=in;
 412         wbio=out;
 413
 414         if (base64)
 415                 {
 416                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 417                         goto end;
 418                 if (debug)
 419                         {
 420                         BIO_set_callback(b64,BIO_debug_callback);
 421                         BIO_set_callback_arg(b64,bio_err);
 422                         }
 423                 if (olb64)
 424                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 425                 if (enc)
 426                         wbio=BIO_push(b64,wbio);
 427                 else
 428                         rbio=BIO_push(b64,rbio);
 429                 }
 430
 431         if (cipher != NULL)
 432                 {
 433                 if (str != NULL)
 434                         {
 435                         /* Salt handling: if encrypting generate a salt and
 436                          * write to output BIO. If decrypting read salt from
 437                          * input BIO.
 438                          */
 439                         unsigned char *sptr;
 440                         if(nosalt) sptr = NULL;
 441                         else {
 442                                 if(enc) {
 443                                         if(hsalt) {
 444                                                 if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
 445                                                         BIO_printf(bio_err,
 446                                                                 "invalid hex salt value\n");
 447                                                         goto end;
 448                                                 }
 449                                         } else RAND_bytes(salt, PKCS5_SALT_LEN);
 450                                         /* If -P option then don't bother writing */
 451                                         if((printkey != 2) && (BIO_write(wbio,
 452                                                         (char *)salt,
 453                                                         PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
 454                                                 BIO_printf(bio_err,"error writing output file\n");
 455                                                 goto end;
 456                                         }
 457                                 } else if(BIO_read(rbio, (unsigned char *)salt,
 458                                     PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
 459                                         BIO_printf(bio_err,"error reading input file\n");
 460                                         goto end;
 461                                 }
 462                                 sptr = salt;
 463                         }
 464
 465                         EVP_BytesToKey(cipher,EVP_md5(),sptr,
 466                                 (unsigned char *)str,
 467                                 strlen(str),1,key,iv);
 468                         /* zero the complete buffer or the string
 469                          * passed from the command line
 470                          * bug picked up by
 471                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 472                         if (str == strbuf)
 473                                 memset(str,0,SIZE);
 474                         else
 475                                 memset(str,0,strlen(str));
 476                         }
 477                 if ((hiv != NULL) && !set_hex(hiv,iv,8))
 478                         {
 479                         BIO_printf(bio_err,"invalid hex iv value\n");
 480                         goto end;
 481                         }
 482                 if ((hkey != NULL) && !set_hex(hkey,key,24))
 483                         {
 484                         BIO_printf(bio_err,"invalid hex key value\n");
 485                         goto end;
 486                         }
 487
 488                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 489                         goto end;
 490                 BIO_set_cipher(benc,cipher,key,iv,enc);
 491                 if (debug)
 492                         {
 493                         BIO_set_callback(benc,BIO_debug_callback);
 494                         BIO_set_callback_arg(benc,bio_err);
 495                         }
 496
 497                 if (printkey)
 498                         {
 499                         if (!nosalt)
 500                                 {
 501                                 printf("salt=");
 502                                 for (i=0; i<PKCS5_SALT_LEN; i++)
 503                                         printf("%02X",salt[i]);
 504                                 printf("\n");
 505                                 }
 506                         if (cipher->key_len > 0)
 507                                 {
 508                                 printf("key=");
 509                                 for (i=0; i<cipher->key_len; i++)
 510                                         printf("%02X",key[i]);
 511                                 printf("\n");
 512                                 }
 513                         if (cipher->iv_len > 0)
 514                                 {
 515                                 printf("iv =");
 516                                 for (i=0; i<cipher->iv_len; i++)
 517                                         printf("%02X",iv[i]);
 518                                 printf("\n");
 519                                 }
 520                         if (printkey == 2)
 521                                 {
 522                                 ret=0;
 523                                 goto end;
 524                                 }
 525                         }
 526                 }
 527
 528         /* Only encrypt/decrypt as we write the file */
 529         if (benc != NULL)
 530                 wbio=BIO_push(benc,wbio);
 531
 532         for (;;)
 533                 {
 534                 inl=BIO_read(rbio,(char *)buff,bsize);
 535                 if (inl <= 0) break;
 536                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 537                         {
 538                         BIO_printf(bio_err,"error writing output file\n");
 539                         goto end;
 540                         }
 541                 }
 542         if (!BIO_flush(wbio))
 543                 {
 544                 BIO_printf(bio_err,"bad decrypt\n");
 545                 goto end;
 546                 }
 547
 548         ret=0;
 549         if (verbose)
 550                 {
 551                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 552                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 553                 }
 554 end:
 555         if (strbuf != NULL) Free(strbuf);
 556         if (buff != NULL) Free(buff);
 557         if (in != NULL) BIO_free(in);
 558         if (out != NULL) BIO_free(out);
 559         if (benc != NULL) BIO_free(benc);
 560         if (b64 != NULL) BIO_free(b64);
 561         EXIT(ret);
 562         }
 563
 564 int set_hex(char *in, unsigned char *out, int size)
 565         {
 566         int i,n;
 567         unsigned char j;
 568
 569         n=strlen(in);
 570         if (n > (size*2))
 571                 {
 572                 BIO_printf(bio_err,"hex string is too long\n");
 573                 return(0);
 574                 }
 575         memset(out,0,size);
 576         for (i=0; i<n; i++)
 577                 {
 578                 j=(unsigned char)*in;
 579                 *(in++)='\0';
 580                 if (j == 0) break;
 581                 if ((j >= '0') && (j <= '9'))
 582                         j-='0';
 583                 else if ((j >= 'A') && (j <= 'F'))
 584                         j=j-'A'+10;
 585                 else if ((j >= 'a') && (j <= 'f'))
 586                         j=j-'a'+10;
 587                 else
 588                         {
 589                         BIO_printf(bio_err,"non-hex digit\n");
 590                         return(0);
 591                         }
 592                 if (i&1)
 593                         out[i/2]|=j;
 594                 else
 595                         out[i/2]=(j<<4);
 596                 }
 597         return(1);
 598         }