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 salt in hex is the next argument\n","-S");
 287                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 288                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 289                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 290                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
 291 #ifndef OPENSSL_NO_ENGINE
 292                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 293 #endif
 294
 295                         BIO_printf(bio_err,"Cipher Types\n");
 296                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 297                                                show_ciphers,
 298                                                bio_err);
 299                         BIO_printf(bio_err,"\n");
 300
 301                         goto end;
 302                         }
 303                 argc--;
 304                 argv++;
 305                 }
 306
 307 #ifndef OPENSSL_NO_ENGINE
 308         e = setup_engine(bio_err, engine, 0);
 309 #endif
 310
 311         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 312                 {
 313                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 314                 goto end;
 315                 }
 316
 317         if (dgst == NULL)
 318                 {
 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 (base64 && 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,(char *)bio_err);
 371                 BIO_set_callback_arg(out,(char *)bio_err);
 372                 }
 373
 374         if (inf == NULL)
 375                 {
 376                 if (bufsize != NULL)
 377                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 378                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 379                 }
 380         else
 381                 {
 382                 if (BIO_read_filename(in,inf) <= 0)
 383                         {
 384                         perror(inf);
 385                         goto end;
 386                         }
 387                 }
 388
 389         if(!str && passarg) {
 390                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 391                         BIO_printf(bio_err, "Error getting password\n");
 392                         goto end;
 393                 }
 394                 str = pass;
 395         }
 396
 397         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 398                 {
 399                 for (;;)
 400                         {
 401                         char buf[200];
 402
 403                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 404                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 405                                      (enc)?"encryption":"decryption");
 406                         strbuf[0]='\0';
 407                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 408                         if (i == 0)
 409                                 {
 410                                 if (strbuf[0] == '\0')
 411                                         {
 412                                         ret=1;
 413                                         goto end;
 414                                         }
 415                                 str=strbuf;
 416                                 break;
 417                                 }
 418                         if (i < 0)
 419                                 {
 420                                 BIO_printf(bio_err,"bad password read\n");
 421                                 goto end;
 422                                 }
 423                         }
 424                 }
 425
 426
 427         if (outf == NULL)
 428                 {
 429                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 430                 if (bufsize != NULL)
 431                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 432 #ifdef OPENSSL_SYS_VMS
 433                 {
 434                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 435                 out = BIO_push(tmpbio, out);
 436                 }
 437 #endif
 438                 }
 439         else
 440                 {
 441                 if (BIO_write_filename(out,outf) <= 0)
 442                         {
 443                         perror(outf);
 444                         goto end;
 445                         }
 446                 }
 447
 448         rbio=in;
 449         wbio=out;
 450
 451         if (base64)
 452                 {
 453                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 454                         goto end;
 455                 if (debug)
 456                         {
 457                         BIO_set_callback(b64,BIO_debug_callback);
 458                         BIO_set_callback_arg(b64,(char *)bio_err);
 459                         }
 460                 if (olb64)
 461                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 462                 if (enc)
 463                         wbio=BIO_push(b64,wbio);
 464                 else
 465                         rbio=BIO_push(b64,rbio);
 466                 }
 467
 468         if (cipher != NULL)
 469                 {
 470                 /* Note that str is NULL if a key was passed on the command
 471                  * line, so we get no salt in that case. Is this a bug?
 472                  */
 473                 if (str != NULL)
 474                         {
 475                         /* Salt handling: if encrypting generate a salt and
 476                          * write to output BIO. If decrypting read salt from
 477                          * input BIO.
 478                          */
 479                         unsigned char *sptr;
 480                         if(nosalt) sptr = NULL;
 481                         else {
 482                                 if(enc) {
 483                                         if(hsalt) {
 484                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 485                                                         BIO_printf(bio_err,
 486                                                                 "invalid hex salt value\n");
 487                                                         goto end;
 488                                                 }
 489                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 490                                                 goto end;
 491                                         /* If -P option then don't bother writing */
 492                                         if((printkey != 2)
 493                                            && (BIO_write(wbio,magic,
 494                                                          sizeof magic-1) != sizeof magic-1
 495                                                || BIO_write(wbio,
 496                                                             (char *)salt,
 497                                                             sizeof salt) != sizeof salt)) {
 498                                                 BIO_printf(bio_err,"error writing output file\n");
 499                                                 goto end;
 500                                         }
 501                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 502                                           || BIO_read(rbio,
 503                                                       (unsigned char *)salt,
 504                                     sizeof salt) != sizeof salt) {
 505                                         BIO_printf(bio_err,"error reading input file\n");
 506                                         goto end;
 507                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 508                                     BIO_printf(bio_err,"bad magic number\n");
 509                                     goto end;
 510                                 }
 511
 512                                 sptr = salt;
 513                         }
 514
 515                         EVP_BytesToKey(cipher,dgst,sptr,
 516                                 (unsigned char *)str,
 517                                 strlen(str),1,key,iv);
 518                         /* zero the complete buffer or the string
 519                          * passed from the command line
 520                          * bug picked up by
 521                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 522                         if (str == strbuf)
 523                                 OPENSSL_cleanse(str,SIZE);
 524                         else
 525                                 OPENSSL_cleanse(str,strlen(str));
 526                         }
 527                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 528                         {
 529                         BIO_printf(bio_err,"invalid hex iv value\n");
 530                         goto end;
 531                         }
 532                 if ((hiv == NULL) && (str == NULL))
 533                         {
 534                         /* No IV was explicitly set and no IV was generated
 535                          * during EVP_BytesToKey. Hence the IV is undefined,
 536                          * making correct decryption impossible. */
 537                         BIO_printf(bio_err, "iv undefined\n");
 538                         goto end;
 539                         }
 540                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 541                         {
 542                         BIO_printf(bio_err,"invalid hex key value\n");
 543                         goto end;
 544                         }
 545
 546                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 547                         goto end;
 548
 549                 /* Since we may be changing parameters work on the encryption
 550                  * context rather than calling BIO_set_cipher().
 551                  */
 552
 553                 BIO_get_cipher_ctx(benc, &ctx);
 554                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 555                         {
 556                         BIO_printf(bio_err, "Error setting cipher %s\n",
 557                                 EVP_CIPHER_name(cipher));
 558                         ERR_print_errors(bio_err);
 559                         goto end;
 560                         }
 561
 562                 if (nopad)
 563                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 564
 565                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 566                         {
 567                         BIO_printf(bio_err, "Error setting cipher %s\n",
 568                                 EVP_CIPHER_name(cipher));
 569                         ERR_print_errors(bio_err);
 570                         goto end;
 571                         }
 572
 573                 if (debug)
 574                         {
 575                         BIO_set_callback(benc,BIO_debug_callback);
 576                         BIO_set_callback_arg(benc,(char *)bio_err);
 577                         }
 578
 579                 if (printkey)
 580                         {
 581                         if (!nosalt)
 582                                 {
 583                                 printf("salt=");
 584                                 for (i=0; i<(int)sizeof(salt); i++)
 585                                         printf("%02X",salt[i]);
 586                                 printf("\n");
 587                                 }
 588                         if (cipher->key_len > 0)
 589                                 {
 590                                 printf("key=");
 591                                 for (i=0; i<cipher->key_len; i++)
 592                                         printf("%02X",key[i]);
 593                                 printf("\n");
 594                                 }
 595                         if (cipher->iv_len > 0)
 596                                 {
 597                                 printf("iv =");
 598                                 for (i=0; i<cipher->iv_len; i++)
 599                                         printf("%02X",iv[i]);
 600                                 printf("\n");
 601                                 }
 602                         if (printkey == 2)
 603                                 {
 604                                 ret=0;
 605                                 goto end;
 606                                 }
 607                         }
 608                 }
 609
 610         /* Only encrypt/decrypt as we write the file */
 611         if (benc != NULL)
 612                 wbio=BIO_push(benc,wbio);
 613
 614         for (;;)
 615                 {
 616                 inl=BIO_read(rbio,(char *)buff,bsize);
 617                 if (inl <= 0) break;
 618                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 619                         {
 620                         BIO_printf(bio_err,"error writing output file\n");
 621                         goto end;
 622                         }
 623                 }
 624         if (!BIO_flush(wbio))
 625                 {
 626                 BIO_printf(bio_err,"bad decrypt\n");
 627                 goto end;
 628                 }
 629
 630         ret=0;
 631         if (verbose)
 632                 {
 633                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 634                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 635                 }
 636 end:
 637         ERR_print_errors(bio_err);
 638         if (strbuf != NULL) OPENSSL_free(strbuf);
 639         if (buff != NULL) OPENSSL_free(buff);
 640         if (in != NULL) BIO_free(in);
 641         if (out != NULL) BIO_free_all(out);
 642         if (benc != NULL) BIO_free(benc);
 643         if (b64 != NULL) BIO_free(b64);
 644         if(pass) OPENSSL_free(pass);
 645         apps_shutdown();
 646         OPENSSL_EXIT(ret);
 647         }
 648
 649 int set_hex(char *in, unsigned char *out, int size)
 650         {
 651         int i,n;
 652         unsigned char j;
 653
 654         n=strlen(in);
 655         if (n > (size*2))
 656                 {
 657                 BIO_printf(bio_err,"hex string is too long\n");
 658                 return(0);
 659                 }
 660         memset(out,0,size);
 661         for (i=0; i<n; i++)
 662                 {
 663                 j=(unsigned char)*in;
 664                 *(in++)='\0';
 665                 if (j == 0) break;
 666                 if ((j >= '0') && (j <= '9'))
 667                         j-='0';
 668                 else if ((j >= 'A') && (j <= 'F'))
 669                         j=j-'A'+10;
 670                 else if ((j >= 'a') && (j <= 'f'))
 671                         j=j-'a'+10;
 672                 else
 673                         {
 674                         BIO_printf(bio_err,"non-hex digit\n");
 675                         return(0);
 676                         }
 677                 if (i&1)
 678                         out[i/2]|=j;
 679                 else
 680                         out[i/2]=(j<<4);
 681                 }
 682         return(1);
 683         }