crypto/openssl-0.9.7e/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         char *inf=NULL,*outf=NULL;
 122         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 123 #define PROG_NAME_SIZE  39
 124         char pname[PROG_NAME_SIZE+1];
 125 #ifndef OPENSSL_NO_ENGINE
 126         char *engine = NULL;
 127 #endif
 128         const EVP_MD *dgst=NULL;
 129
 130         apps_startup();
 131
 132         if (bio_err == NULL)
 133                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 134                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 135
 136         if (!load_config(bio_err, NULL))
 137                 goto end;
 138
 139         /* first check the program name */
 140         program_name(argv[0],pname,sizeof pname);
 141         if (strcmp(pname,"base64") == 0)
 142                 base64=1;
 143
 144         cipher=EVP_get_cipherbyname(pname);
 145         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 146                 {
 147                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 148                 goto bad;
 149                 }
 150
 151         argc--;
 152         argv++;
 153         while (argc >= 1)
 154                 {
 155                 if      (strcmp(*argv,"-e") == 0)
 156                         enc=1;
 157                 else if (strcmp(*argv,"-in") == 0)
 158                         {
 159                         if (--argc < 1) goto bad;
 160                         inf= *(++argv);
 161                         }
 162                 else if (strcmp(*argv,"-out") == 0)
 163                         {
 164                         if (--argc < 1) goto bad;
 165                         outf= *(++argv);
 166                         }
 167                 else if (strcmp(*argv,"-pass") == 0)
 168                         {
 169                         if (--argc < 1) goto bad;
 170                         passarg= *(++argv);
 171                         }
 172 #ifndef OPENSSL_NO_ENGINE
 173                 else if (strcmp(*argv,"-engine") == 0)
 174                         {
 175                         if (--argc < 1) goto bad;
 176                         engine= *(++argv);
 177                         }
 178 #endif
 179                 else if (strcmp(*argv,"-d") == 0)
 180                         enc=0;
 181                 else if (strcmp(*argv,"-p") == 0)
 182                         printkey=1;
 183                 else if (strcmp(*argv,"-v") == 0)
 184                         verbose=1;
 185                 else if (strcmp(*argv,"-nopad") == 0)
 186                         nopad=1;
 187                 else if (strcmp(*argv,"-salt") == 0)
 188                         nosalt=0;
 189                 else if (strcmp(*argv,"-nosalt") == 0)
 190                         nosalt=1;
 191                 else if (strcmp(*argv,"-debug") == 0)
 192                         debug=1;
 193                 else if (strcmp(*argv,"-P") == 0)
 194                         printkey=2;
 195                 else if (strcmp(*argv,"-A") == 0)
 196                         olb64=1;
 197                 else if (strcmp(*argv,"-a") == 0)
 198                         base64=1;
 199                 else if (strcmp(*argv,"-base64") == 0)
 200                         base64=1;
 201                 else if (strcmp(*argv,"-bufsize") == 0)
 202                         {
 203                         if (--argc < 1) goto bad;
 204                         bufsize=(unsigned char *)*(++argv);
 205                         }
 206                 else if (strcmp(*argv,"-k") == 0)
 207                         {
 208                         if (--argc < 1) goto bad;
 209                         str= *(++argv);
 210                         }
 211                 else if (strcmp(*argv,"-kfile") == 0)
 212                         {
 213                         static char buf[128];
 214                         FILE *infile;
 215                         char *file;
 216
 217                         if (--argc < 1) goto bad;
 218                         file= *(++argv);
 219                         infile=fopen(file,"r");
 220                         if (infile == NULL)
 221                                 {
 222                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 223                                         file);
 224                                 goto bad;
 225                                 }
 226                         buf[0]='\0';
 227                         fgets(buf,sizeof buf,infile);
 228                         fclose(infile);
 229                         i=strlen(buf);
 230                         if ((i > 0) &&
 231                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 232                                 buf[--i]='\0';
 233                         if ((i > 0) &&
 234                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 235                                 buf[--i]='\0';
 236                         if (i < 1)
 237                                 {
 238                                 BIO_printf(bio_err,"zero length password\n");
 239                                 goto bad;
 240                                 }
 241                         str=buf;
 242                         }
 243                 else if (strcmp(*argv,"-K") == 0)
 244                         {
 245                         if (--argc < 1) goto bad;
 246                         hkey= *(++argv);
 247                         }
 248                 else if (strcmp(*argv,"-S") == 0)
 249                         {
 250                         if (--argc < 1) goto bad;
 251                         hsalt= *(++argv);
 252                         }
 253                 else if (strcmp(*argv,"-iv") == 0)
 254                         {
 255                         if (--argc < 1) goto bad;
 256                         hiv= *(++argv);
 257                         }
 258                 else if (strcmp(*argv,"-md") == 0)
 259                         {
 260                         if (--argc < 1) goto bad;
 261                         md= *(++argv);
 262                         }
 263                 else if ((argv[0][0] == '-') &&
 264                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 265                         {
 266                         cipher=c;
 267                         }
 268                 else if (strcmp(*argv,"-none") == 0)
 269                         cipher=NULL;
 270                 else
 271                         {
 272                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 273 bad:
 274                         BIO_printf(bio_err,"options are\n");
 275                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 276                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 277                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 278                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 279                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 280                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 281                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 282                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 283                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 284                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 285                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 286                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 287                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 288 #ifndef OPENSSL_NO_ENGINE
 289                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 290 #endif
 291
 292                         BIO_printf(bio_err,"Cipher Types\n");
 293                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 294                                                show_ciphers,
 295                                                bio_err);
 296                         BIO_printf(bio_err,"\n");
 297
 298                         goto end;
 299                         }
 300                 argc--;
 301                 argv++;
 302                 }
 303
 304 #ifndef OPENSSL_NO_ENGINE
 305         e = setup_engine(bio_err, engine, 0);
 306 #endif
 307
 308         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 309                 {
 310                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 311                 goto end;
 312                 }
 313
 314         if (dgst == NULL)
 315                 {
 316                 if (in_FIPS_mode)
 317                         dgst = EVP_sha1();
 318                 else
 319                         dgst = EVP_md5();
 320                 }
 321
 322         if (bufsize != NULL)
 323                 {
 324                 unsigned long n;
 325
 326                 for (n=0; *bufsize; bufsize++)
 327                         {
 328                         i= *bufsize;
 329                         if ((i <= '9') && (i >= '0'))
 330                                 n=n*10+i-'0';
 331                         else if (i == 'k')
 332                                 {
 333                                 n*=1024;
 334                                 bufsize++;
 335                                 break;
 336                                 }
 337                         }
 338                 if (*bufsize != '\0')
 339                         {
 340                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 341                         goto end;
 342                         }
 343
 344                 /* It must be large enough for a base64 encoded line */
 345                 if (n < 80) n=80;
 346
 347                 bsize=(int)n;
 348                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 349                 }
 350
 351         strbuf=OPENSSL_malloc(SIZE);
 352         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 353         if ((buff == NULL) || (strbuf == NULL))
 354                 {
 355                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 356                 goto end;
 357                 }
 358
 359         in=BIO_new(BIO_s_file());
 360         out=BIO_new(BIO_s_file());
 361         if ((in == NULL) || (out == NULL))
 362                 {
 363                 ERR_print_errors(bio_err);
 364                 goto end;
 365                 }
 366         if (debug)
 367                 {
 368                 BIO_set_callback(in,BIO_debug_callback);
 369                 BIO_set_callback(out,BIO_debug_callback);
 370                 BIO_set_callback_arg(in,bio_err);
 371                 BIO_set_callback_arg(out,bio_err);
 372                 }
 373
 374         if (inf == NULL)
 375                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 376         else
 377                 {
 378                 if (BIO_read_filename(in,inf) <= 0)
 379                         {
 380                         perror(inf);
 381                         goto end;
 382                         }
 383                 }
 384
 385         if(!str && passarg) {
 386                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 387                         BIO_printf(bio_err, "Error getting password\n");
 388                         goto end;
 389                 }
 390                 str = pass;
 391         }
 392
 393         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 394                 {
 395                 for (;;)
 396                         {
 397                         char buf[200];
 398
 399                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 400                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 401                                      (enc)?"encryption":"decryption");
 402                         strbuf[0]='\0';
 403                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 404                         if (i == 0)
 405                                 {
 406                                 if (strbuf[0] == '\0')
 407                                         {
 408                                         ret=1;
 409                                         goto end;
 410                                         }
 411                                 str=strbuf;
 412                                 break;
 413                                 }
 414                         if (i < 0)
 415                                 {
 416                                 BIO_printf(bio_err,"bad password read\n");
 417                                 goto end;
 418                                 }
 419                         }
 420                 }
 421
 422
 423         if (outf == NULL)
 424                 {
 425                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 426 #ifdef OPENSSL_SYS_VMS
 427                 {
 428                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 429                 out = BIO_push(tmpbio, out);
 430                 }
 431 #endif
 432                 }
 433         else
 434                 {
 435                 if (BIO_write_filename(out,outf) <= 0)
 436                         {
 437                         perror(outf);
 438                         goto end;
 439                         }
 440                 }
 441
 442         rbio=in;
 443         wbio=out;
 444
 445         if (base64)
 446                 {
 447                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 448                         goto end;
 449                 if (debug)
 450                         {
 451                         BIO_set_callback(b64,BIO_debug_callback);
 452                         BIO_set_callback_arg(b64,bio_err);
 453                         }
 454                 if (olb64)
 455                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 456                 if (enc)
 457                         wbio=BIO_push(b64,wbio);
 458                 else
 459                         rbio=BIO_push(b64,rbio);
 460                 }
 461
 462         if (cipher != NULL)
 463                 {
 464                 /* Note that str is NULL if a key was passed on the command
 465                  * line, so we get no salt in that case. Is this a bug?
 466                  */
 467                 if (str != NULL)
 468                         {
 469                         /* Salt handling: if encrypting generate a salt and
 470                          * write to output BIO. If decrypting read salt from
 471                          * input BIO.
 472                          */
 473                         unsigned char *sptr;
 474                         if(nosalt) sptr = NULL;
 475                         else {
 476                                 if(enc) {
 477                                         if(hsalt) {
 478                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 479                                                         BIO_printf(bio_err,
 480                                                                 "invalid hex salt value\n");
 481                                                         goto end;
 482                                                 }
 483                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 484                                                 goto end;
 485                                         /* If -P option then don't bother writing */
 486                                         if((printkey != 2)
 487                                            && (BIO_write(wbio,magic,
 488                                                          sizeof magic-1) != sizeof magic-1
 489                                                || BIO_write(wbio,
 490                                                             (char *)salt,
 491                                                             sizeof salt) != sizeof salt)) {
 492                                                 BIO_printf(bio_err,"error writing output file\n");
 493                                                 goto end;
 494                                         }
 495                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 496                                           || BIO_read(rbio,
 497                                                       (unsigned char *)salt,
 498                                     sizeof salt) != sizeof salt) {
 499                                         BIO_printf(bio_err,"error reading input file\n");
 500                                         goto end;
 501                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 502                                     BIO_printf(bio_err,"bad magic number\n");
 503                                     goto end;
 504                                 }
 505
 506                                 sptr = salt;
 507                         }
 508
 509                         EVP_BytesToKey(cipher,dgst,sptr,
 510                                 (unsigned char *)str,
 511                                 strlen(str),1,key,iv);
 512                         /* zero the complete buffer or the string
 513                          * passed from the command line
 514                          * bug picked up by
 515                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 516                         if (str == strbuf)
 517                                 OPENSSL_cleanse(str,SIZE);
 518                         else
 519                                 OPENSSL_cleanse(str,strlen(str));
 520                         }
 521                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 522                         {
 523                         BIO_printf(bio_err,"invalid hex iv value\n");
 524                         goto end;
 525                         }
 526                 if ((hiv == NULL) && (str == NULL))
 527                         {
 528                         /* No IV was explicitly set and no IV was generated
 529                          * during EVP_BytesToKey. Hence the IV is undefined,
 530                          * making correct decryption impossible. */
 531                         BIO_printf(bio_err, "iv undefined\n");
 532                         goto end;
 533                         }
 534                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 535                         {
 536                         BIO_printf(bio_err,"invalid hex key value\n");
 537                         goto end;
 538                         }
 539
 540                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 541                         goto end;
 542                 BIO_set_cipher(benc,cipher,key,iv,enc);
 543                 if (nopad)
 544                         {
 545                         EVP_CIPHER_CTX *ctx;
 546                         BIO_get_cipher_ctx(benc, &ctx);
 547                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 548                         }
 549                 if (debug)
 550                         {
 551                         BIO_set_callback(benc,BIO_debug_callback);
 552                         BIO_set_callback_arg(benc,bio_err);
 553                         }
 554
 555                 if (printkey)
 556                         {
 557                         if (!nosalt)
 558                                 {
 559                                 printf("salt=");
 560                                 for (i=0; i<sizeof salt; i++)
 561                                         printf("%02X",salt[i]);
 562                                 printf("\n");
 563                                 }
 564                         if (cipher->key_len > 0)
 565                                 {
 566                                 printf("key=");
 567                                 for (i=0; i<cipher->key_len; i++)
 568                                         printf("%02X",key[i]);
 569                                 printf("\n");
 570                                 }
 571                         if (cipher->iv_len > 0)
 572                                 {
 573                                 printf("iv =");
 574                                 for (i=0; i<cipher->iv_len; i++)
 575                                         printf("%02X",iv[i]);
 576                                 printf("\n");
 577                                 }
 578                         if (printkey == 2)
 579                                 {
 580                                 ret=0;
 581                                 goto end;
 582                                 }
 583                         }
 584                 }
 585
 586         /* Only encrypt/decrypt as we write the file */
 587         if (benc != NULL)
 588                 wbio=BIO_push(benc,wbio);
 589
 590         for (;;)
 591                 {
 592                 inl=BIO_read(rbio,(char *)buff,bsize);
 593                 if (inl <= 0) break;
 594                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 595                         {
 596                         BIO_printf(bio_err,"error writing output file\n");
 597                         goto end;
 598                         }
 599                 }
 600         if (!BIO_flush(wbio))
 601                 {
 602                 BIO_printf(bio_err,"bad decrypt\n");
 603                 goto end;
 604                 }
 605
 606         ret=0;
 607         if (verbose)
 608                 {
 609                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 610                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 611                 }
 612 end:
 613         ERR_print_errors(bio_err);
 614         if (strbuf != NULL) OPENSSL_free(strbuf);
 615         if (buff != NULL) OPENSSL_free(buff);
 616         if (in != NULL) BIO_free(in);
 617         if (out != NULL) BIO_free_all(out);
 618         if (benc != NULL) BIO_free(benc);
 619         if (b64 != NULL) BIO_free(b64);
 620         if(pass) OPENSSL_free(pass);
 621         apps_shutdown();
 622         OPENSSL_EXIT(ret);
 623         }
 624
 625 int set_hex(char *in, unsigned char *out, int size)
 626         {
 627         int i,n;
 628         unsigned char j;
 629
 630         n=strlen(in);
 631         if (n > (size*2))
 632                 {
 633                 BIO_printf(bio_err,"hex string is too long\n");
 634                 return(0);
 635                 }
 636         memset(out,0,size);
 637         for (i=0; i<n; i++)
 638                 {
 639                 j=(unsigned char)*in;
 640                 *(in++)='\0';
 641                 if (j == 0) break;
 642                 if ((j >= '0') && (j <= '9'))
 643                         j-='0';
 644                 else if ((j >= 'A') && (j <= 'F'))
 645                         j=j-'A'+10;
 646                 else if ((j >= 'a') && (j <= 'f'))
 647                         j=j-'a'+10;
 648                 else
 649                         {
 650                         BIO_printf(bio_err,"non-hex digit\n");
 651                         return(0);
 652                         }
 653                 if (i&1)
 654                         out[i/2]|=j;
 655                 else
 656                         out[i/2]=(j<<4);
 657                 }
 658         return(1);
 659         }