crypto/openssl-0.9/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
 131         apps_startup();
 132
 133         if (bio_err == NULL)
 134                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 135                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 136
 137         if (!load_config(bio_err, NULL))
 138                 goto end;
 139
 140         /* first check the program name */
 141         program_name(argv[0],pname,sizeof pname);
 142         if (strcmp(pname,"base64") == 0)
 143                 base64=1;
 144
 145         cipher=EVP_get_cipherbyname(pname);
 146         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 147                 {
 148                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 149                 goto bad;
 150                 }
 151
 152         argc--;
 153         argv++;
 154         while (argc >= 1)
 155                 {
 156                 if      (strcmp(*argv,"-e") == 0)
 157                         enc=1;
 158                 else if (strcmp(*argv,"-in") == 0)
 159                         {
 160                         if (--argc < 1) goto bad;
 161                         inf= *(++argv);
 162                         }
 163                 else if (strcmp(*argv,"-out") == 0)
 164                         {
 165                         if (--argc < 1) goto bad;
 166                         outf= *(++argv);
 167                         }
 168                 else if (strcmp(*argv,"-pass") == 0)
 169                         {
 170                         if (--argc < 1) goto bad;
 171                         passarg= *(++argv);
 172                         }
 173 #ifndef OPENSSL_NO_ENGINE
 174                 else if (strcmp(*argv,"-engine") == 0)
 175                         {
 176                         if (--argc < 1) goto bad;
 177                         engine= *(++argv);
 178                         }
 179 #endif
 180                 else if (strcmp(*argv,"-d") == 0)
 181                         enc=0;
 182                 else if (strcmp(*argv,"-p") == 0)
 183                         printkey=1;
 184                 else if (strcmp(*argv,"-v") == 0)
 185                         verbose=1;
 186                 else if (strcmp(*argv,"-nopad") == 0)
 187                         nopad=1;
 188                 else if (strcmp(*argv,"-salt") == 0)
 189                         nosalt=0;
 190                 else if (strcmp(*argv,"-nosalt") == 0)
 191                         nosalt=1;
 192                 else if (strcmp(*argv,"-debug") == 0)
 193                         debug=1;
 194                 else if (strcmp(*argv,"-P") == 0)
 195                         printkey=2;
 196                 else if (strcmp(*argv,"-A") == 0)
 197                         olb64=1;
 198                 else if (strcmp(*argv,"-a") == 0)
 199                         base64=1;
 200                 else if (strcmp(*argv,"-base64") == 0)
 201                         base64=1;
 202                 else if (strcmp(*argv,"-bufsize") == 0)
 203                         {
 204                         if (--argc < 1) goto bad;
 205                         bufsize=(unsigned char *)*(++argv);
 206                         }
 207                 else if (strcmp(*argv,"-k") == 0)
 208                         {
 209                         if (--argc < 1) goto bad;
 210                         str= *(++argv);
 211                         }
 212                 else if (strcmp(*argv,"-kfile") == 0)
 213                         {
 214                         static char buf[128];
 215                         FILE *infile;
 216                         char *file;
 217
 218                         if (--argc < 1) goto bad;
 219                         file= *(++argv);
 220                         infile=fopen(file,"r");
 221                         if (infile == NULL)
 222                                 {
 223                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 224                                         file);
 225                                 goto bad;
 226                                 }
 227                         buf[0]='\0';
 228                         fgets(buf,sizeof buf,infile);
 229                         fclose(infile);
 230                         i=strlen(buf);
 231                         if ((i > 0) &&
 232                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 233                                 buf[--i]='\0';
 234                         if ((i > 0) &&
 235                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 236                                 buf[--i]='\0';
 237                         if (i < 1)
 238                                 {
 239                                 BIO_printf(bio_err,"zero length password\n");
 240                                 goto bad;
 241                                 }
 242                         str=buf;
 243                         }
 244                 else if (strcmp(*argv,"-K") == 0)
 245                         {
 246                         if (--argc < 1) goto bad;
 247                         hkey= *(++argv);
 248                         }
 249                 else if (strcmp(*argv,"-S") == 0)
 250                         {
 251                         if (--argc < 1) goto bad;
 252                         hsalt= *(++argv);
 253                         }
 254                 else if (strcmp(*argv,"-iv") == 0)
 255                         {
 256                         if (--argc < 1) goto bad;
 257                         hiv= *(++argv);
 258                         }
 259                 else if (strcmp(*argv,"-md") == 0)
 260                         {
 261                         if (--argc < 1) goto bad;
 262                         md= *(++argv);
 263                         }
 264                 else if ((argv[0][0] == '-') &&
 265                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 266                         {
 267                         cipher=c;
 268                         }
 269                 else if (strcmp(*argv,"-none") == 0)
 270                         cipher=NULL;
 271                 else
 272                         {
 273                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 274 bad:
 275                         BIO_printf(bio_err,"options are\n");
 276                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 277                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 278                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 279                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 280                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 281                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 282                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 283                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 284                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 285                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 286                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 287                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 288                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 289 #ifndef OPENSSL_NO_ENGINE
 290                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 291 #endif
 292
 293                         BIO_printf(bio_err,"Cipher Types\n");
 294                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 295                                                show_ciphers,
 296                                                bio_err);
 297                         BIO_printf(bio_err,"\n");
 298
 299                         goto end;
 300                         }
 301                 argc--;
 302                 argv++;
 303                 }
 304
 305 #ifndef OPENSSL_NO_ENGINE
 306         e = setup_engine(bio_err, engine, 0);
 307 #endif
 308
 309         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 310                 {
 311                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 312                 goto end;
 313                 }
 314
 315         if (dgst == NULL)
 316                 {
 317                 dgst = EVP_md5();
 318                 }
 319
 320         if (bufsize != NULL)
 321                 {
 322                 unsigned long n;
 323
 324                 for (n=0; *bufsize; bufsize++)
 325                         {
 326                         i= *bufsize;
 327                         if ((i <= '9') && (i >= '0'))
 328                                 n=n*10+i-'0';
 329                         else if (i == 'k')
 330                                 {
 331                                 n*=1024;
 332                                 bufsize++;
 333                                 break;
 334                                 }
 335                         }
 336                 if (*bufsize != '\0')
 337                         {
 338                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 339                         goto end;
 340                         }
 341
 342                 /* It must be large enough for a base64 encoded line */
 343                 if (base64 && n < 80) n=80;
 344
 345                 bsize=(int)n;
 346                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 347                 }
 348
 349         strbuf=OPENSSL_malloc(SIZE);
 350         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 351         if ((buff == NULL) || (strbuf == NULL))
 352                 {
 353                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 354                 goto end;
 355                 }
 356
 357         in=BIO_new(BIO_s_file());
 358         out=BIO_new(BIO_s_file());
 359         if ((in == NULL) || (out == NULL))
 360                 {
 361                 ERR_print_errors(bio_err);
 362                 goto end;
 363                 }
 364         if (debug)
 365                 {
 366                 BIO_set_callback(in,BIO_debug_callback);
 367                 BIO_set_callback(out,BIO_debug_callback);
 368                 BIO_set_callback_arg(in,(char *)bio_err);
 369                 BIO_set_callback_arg(out,(char *)bio_err);
 370                 }
 371
 372         if (inf == NULL)
 373                 {
 374                 if (bufsize != NULL)
 375                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 376                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 377                 }
 378         else
 379                 {
 380                 if (BIO_read_filename(in,inf) <= 0)
 381                         {
 382                         perror(inf);
 383                         goto end;
 384                         }
 385                 }
 386
 387         if(!str && passarg) {
 388                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 389                         BIO_printf(bio_err, "Error getting password\n");
 390                         goto end;
 391                 }
 392                 str = pass;
 393         }
 394
 395         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 396                 {
 397                 for (;;)
 398                         {
 399                         char buf[200];
 400
 401                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 402                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 403                                      (enc)?"encryption":"decryption");
 404                         strbuf[0]='\0';
 405                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 406                         if (i == 0)
 407                                 {
 408                                 if (strbuf[0] == '\0')
 409                                         {
 410                                         ret=1;
 411                                         goto end;
 412                                         }
 413                                 str=strbuf;
 414                                 break;
 415                                 }
 416                         if (i < 0)
 417                                 {
 418                                 BIO_printf(bio_err,"bad password read\n");
 419                                 goto end;
 420                                 }
 421                         }
 422                 }
 423
 424
 425         if (outf == NULL)
 426                 {
 427                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 428                 if (bufsize != NULL)
 429                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 430 #ifdef OPENSSL_SYS_VMS
 431                 {
 432                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 433                 out = BIO_push(tmpbio, out);
 434                 }
 435 #endif
 436                 }
 437         else
 438                 {
 439                 if (BIO_write_filename(out,outf) <= 0)
 440                         {
 441                         perror(outf);
 442                         goto end;
 443                         }
 444                 }
 445
 446         rbio=in;
 447         wbio=out;
 448
 449         if (base64)
 450                 {
 451                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 452                         goto end;
 453                 if (debug)
 454                         {
 455                         BIO_set_callback(b64,BIO_debug_callback);
 456                         BIO_set_callback_arg(b64,(char *)bio_err);
 457                         }
 458                 if (olb64)
 459                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 460                 if (enc)
 461                         wbio=BIO_push(b64,wbio);
 462                 else
 463                         rbio=BIO_push(b64,rbio);
 464                 }
 465
 466         if (cipher != NULL)
 467                 {
 468                 /* Note that str is NULL if a key was passed on the command
 469                  * line, so we get no salt in that case. Is this a bug?
 470                  */
 471                 if (str != NULL)
 472                         {
 473                         /* Salt handling: if encrypting generate a salt and
 474                          * write to output BIO. If decrypting read salt from
 475                          * input BIO.
 476                          */
 477                         unsigned char *sptr;
 478                         if(nosalt) sptr = NULL;
 479                         else {
 480                                 if(enc) {
 481                                         if(hsalt) {
 482                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 483                                                         BIO_printf(bio_err,
 484                                                                 "invalid hex salt value\n");
 485                                                         goto end;
 486                                                 }
 487                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 488                                                 goto end;
 489                                         /* If -P option then don't bother writing */
 490                                         if((printkey != 2)
 491                                            && (BIO_write(wbio,magic,
 492                                                          sizeof magic-1) != sizeof magic-1
 493                                                || BIO_write(wbio,
 494                                                             (char *)salt,
 495                                                             sizeof salt) != sizeof salt)) {
 496                                                 BIO_printf(bio_err,"error writing output file\n");
 497                                                 goto end;
 498                                         }
 499                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 500                                           || BIO_read(rbio,
 501                                                       (unsigned char *)salt,
 502                                     sizeof salt) != sizeof salt) {
 503                                         BIO_printf(bio_err,"error reading input file\n");
 504                                         goto end;
 505                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 506                                     BIO_printf(bio_err,"bad magic number\n");
 507                                     goto end;
 508                                 }
 509
 510                                 sptr = salt;
 511                         }
 512
 513                         EVP_BytesToKey(cipher,dgst,sptr,
 514                                 (unsigned char *)str,
 515                                 strlen(str),1,key,iv);
 516                         /* zero the complete buffer or the string
 517                          * passed from the command line
 518                          * bug picked up by
 519                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 520                         if (str == strbuf)
 521                                 OPENSSL_cleanse(str,SIZE);
 522                         else
 523                                 OPENSSL_cleanse(str,strlen(str));
 524                         }
 525                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 526                         {
 527                         BIO_printf(bio_err,"invalid hex iv value\n");
 528                         goto end;
 529                         }
 530                 if ((hiv == NULL) && (str == NULL))
 531                         {
 532                         /* No IV was explicitly set and no IV was generated
 533                          * during EVP_BytesToKey. Hence the IV is undefined,
 534                          * making correct decryption impossible. */
 535                         BIO_printf(bio_err, "iv undefined\n");
 536                         goto end;
 537                         }
 538                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 539                         {
 540                         BIO_printf(bio_err,"invalid hex key value\n");
 541                         goto end;
 542                         }
 543
 544                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 545                         goto end;
 546
 547                 /* Since we may be changing parameters work on the encryption
 548                  * context rather than calling BIO_set_cipher().
 549                  */
 550
 551                 BIO_get_cipher_ctx(benc, &ctx);
 552                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 553                         {
 554                         BIO_printf(bio_err, "Error setting cipher %s\n",
 555                                 EVP_CIPHER_name(cipher));
 556                         ERR_print_errors(bio_err);
 557                         goto end;
 558                         }
 559
 560                 if (nopad)
 561                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 562
 563                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 564                         {
 565                         BIO_printf(bio_err, "Error setting cipher %s\n",
 566                                 EVP_CIPHER_name(cipher));
 567                         ERR_print_errors(bio_err);
 568                         goto end;
 569                         }
 570
 571                 if (debug)
 572                         {
 573                         BIO_set_callback(benc,BIO_debug_callback);
 574                         BIO_set_callback_arg(benc,(char *)bio_err);
 575                         }
 576
 577                 if (printkey)
 578                         {
 579                         if (!nosalt)
 580                                 {
 581                                 printf("salt=");
 582                                 for (i=0; i<(int)sizeof(salt); i++)
 583                                         printf("%02X",salt[i]);
 584                                 printf("\n");
 585                                 }
 586                         if (cipher->key_len > 0)
 587                                 {
 588                                 printf("key=");
 589                                 for (i=0; i<cipher->key_len; i++)
 590                                         printf("%02X",key[i]);
 591                                 printf("\n");
 592                                 }
 593                         if (cipher->iv_len > 0)
 594                                 {
 595                                 printf("iv =");
 596                                 for (i=0; i<cipher->iv_len; i++)
 597                                         printf("%02X",iv[i]);
 598                                 printf("\n");
 599                                 }
 600                         if (printkey == 2)
 601                                 {
 602                                 ret=0;
 603                                 goto end;
 604                                 }
 605                         }
 606                 }
 607
 608         /* Only encrypt/decrypt as we write the file */
 609         if (benc != NULL)
 610                 wbio=BIO_push(benc,wbio);
 611
 612         for (;;)
 613                 {
 614                 inl=BIO_read(rbio,(char *)buff,bsize);
 615                 if (inl <= 0) break;
 616                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 617                         {
 618                         BIO_printf(bio_err,"error writing output file\n");
 619                         goto end;
 620                         }
 621                 }
 622         if (!BIO_flush(wbio))
 623                 {
 624                 BIO_printf(bio_err,"bad decrypt\n");
 625                 goto end;
 626                 }
 627
 628         ret=0;
 629         if (verbose)
 630                 {
 631                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 632                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 633                 }
 634 end:
 635         ERR_print_errors(bio_err);
 636         if (strbuf != NULL) OPENSSL_free(strbuf);
 637         if (buff != NULL) OPENSSL_free(buff);
 638         if (in != NULL) BIO_free(in);
 639         if (out != NULL) BIO_free_all(out);
 640         if (benc != NULL) BIO_free(benc);
 641         if (b64 != NULL) BIO_free(b64);
 642         if(pass) OPENSSL_free(pass);
 643         apps_shutdown();
 644         OPENSSL_EXIT(ret);
 645         }
 646
 647 int set_hex(char *in, unsigned char *out, int size)
 648         {
 649         int i,n;
 650         unsigned char j;
 651
 652         n=strlen(in);
 653         if (n > (size*2))
 654                 {
 655                 BIO_printf(bio_err,"hex string is too long\n");
 656                 return(0);
 657                 }
 658         memset(out,0,size);
 659         for (i=0; i<n; i++)
 660                 {
 661                 j=(unsigned char)*in;
 662                 *(in++)='\0';
 663                 if (j == 0) break;
 664                 if ((j >= '0') && (j <= '9'))
 665                         j-='0';
 666                 else if ((j >= 'A') && (j <= 'F'))
 667                         j=j-'A'+10;
 668                 else if ((j >= 'a') && (j <= 'f'))
 669                         j=j-'a'+10;
 670                 else
 671                         {
 672                         BIO_printf(bio_err,"non-hex digit\n");
 673                         return(0);
 674                         }
 675                 if (i&1)
 676                         out[i/2]|=j;
 677                 else
 678                         out[i/2]=(j<<4);
 679                 }
 680         return(1);
 681         }