crypto/openssl/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         static const char magic[]="Salted__";
 104         char mbuf[sizeof magic-1];
 105         char *strbuf=NULL;
 106         unsigned char *buff=NULL,*bufsize=NULL;
 107         int bsize=BSIZE,verbose=0;
 108         int ret=1,inl;
 109         int nopad = 0;
 110         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 111         unsigned char salt[PKCS5_SALT_LEN];
 112         char *str=NULL, *passarg = NULL, *pass = NULL;
 113         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 114         char *md=NULL;
 115         int enc=1,printkey=0,i,base64=0;
 116         int debug=0,olb64=0,nosalt=0;
 117         const EVP_CIPHER *cipher=NULL,*c;
 118         EVP_CIPHER_CTX *ctx = NULL;
 119         char *inf=NULL,*outf=NULL;
 120         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 121 #define PROG_NAME_SIZE  39
 122         char pname[PROG_NAME_SIZE+1];
 123 #ifndef OPENSSL_NO_ENGINE
 124         char *engine = NULL;
 125 #endif
 126         const EVP_MD *dgst=NULL;
 127         int non_fips_allow = 0;
 128
 129         apps_startup();
 130
 131         if (bio_err == NULL)
 132                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 133                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 134
 135         if (!load_config(bio_err, NULL))
 136                 goto end;
 137
 138         /* first check the program name */
 139         program_name(argv[0],pname,sizeof pname);
 140         if (strcmp(pname,"base64") == 0)
 141                 base64=1;
 142
 143         cipher=EVP_get_cipherbyname(pname);
 144         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 145                 {
 146                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 147                 goto bad;
 148                 }
 149
 150         argc--;
 151         argv++;
 152         while (argc >= 1)
 153                 {
 154                 if      (strcmp(*argv,"-e") == 0)
 155                         enc=1;
 156                 else if (strcmp(*argv,"-in") == 0)
 157                         {
 158                         if (--argc < 1) goto bad;
 159                         inf= *(++argv);
 160                         }
 161                 else if (strcmp(*argv,"-out") == 0)
 162                         {
 163                         if (--argc < 1) goto bad;
 164                         outf= *(++argv);
 165                         }
 166                 else if (strcmp(*argv,"-pass") == 0)
 167                         {
 168                         if (--argc < 1) goto bad;
 169                         passarg= *(++argv);
 170                         }
 171 #ifndef OPENSSL_NO_ENGINE
 172                 else if (strcmp(*argv,"-engine") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         engine= *(++argv);
 176                         }
 177 #endif
 178                 else if (strcmp(*argv,"-d") == 0)
 179                         enc=0;
 180                 else if (strcmp(*argv,"-p") == 0)
 181                         printkey=1;
 182                 else if (strcmp(*argv,"-v") == 0)
 183                         verbose=1;
 184                 else if (strcmp(*argv,"-nopad") == 0)
 185                         nopad=1;
 186                 else if (strcmp(*argv,"-salt") == 0)
 187                         nosalt=0;
 188                 else if (strcmp(*argv,"-nosalt") == 0)
 189                         nosalt=1;
 190                 else if (strcmp(*argv,"-debug") == 0)
 191                         debug=1;
 192                 else if (strcmp(*argv,"-P") == 0)
 193                         printkey=2;
 194                 else if (strcmp(*argv,"-A") == 0)
 195                         olb64=1;
 196                 else if (strcmp(*argv,"-a") == 0)
 197                         base64=1;
 198                 else if (strcmp(*argv,"-base64") == 0)
 199                         base64=1;
 200                 else if (strcmp(*argv,"-bufsize") == 0)
 201                         {
 202                         if (--argc < 1) goto bad;
 203                         bufsize=(unsigned char *)*(++argv);
 204                         }
 205                 else if (strcmp(*argv,"-k") == 0)
 206                         {
 207                         if (--argc < 1) goto bad;
 208                         str= *(++argv);
 209                         }
 210                 else if (strcmp(*argv,"-kfile") == 0)
 211                         {
 212                         static char buf[128];
 213                         FILE *infile;
 214                         char *file;
 215
 216                         if (--argc < 1) goto bad;
 217                         file= *(++argv);
 218                         infile=fopen(file,"r");
 219                         if (infile == NULL)
 220                                 {
 221                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 222                                         file);
 223                                 goto bad;
 224                                 }
 225                         buf[0]='\0';
 226                         if (!fgets(buf,sizeof buf,infile))
 227                                 {
 228                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 229                                         file);
 230                                 goto bad;
 231                                 }
 232                         fclose(infile);
 233                         i=strlen(buf);
 234                         if ((i > 0) &&
 235                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 236                                 buf[--i]='\0';
 237                         if ((i > 0) &&
 238                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 239                                 buf[--i]='\0';
 240                         if (i < 1)
 241                                 {
 242                                 BIO_printf(bio_err,"zero length password\n");
 243                                 goto bad;
 244                                 }
 245                         str=buf;
 246                         }
 247                 else if (strcmp(*argv,"-K") == 0)
 248                         {
 249                         if (--argc < 1) goto bad;
 250                         hkey= *(++argv);
 251                         }
 252                 else if (strcmp(*argv,"-S") == 0)
 253                         {
 254                         if (--argc < 1) goto bad;
 255                         hsalt= *(++argv);
 256                         }
 257                 else if (strcmp(*argv,"-iv") == 0)
 258                         {
 259                         if (--argc < 1) goto bad;
 260                         hiv= *(++argv);
 261                         }
 262                 else if (strcmp(*argv,"-md") == 0)
 263                         {
 264                         if (--argc < 1) goto bad;
 265                         md= *(++argv);
 266                         }
 267                 else if (strcmp(*argv,"-non-fips-allow") == 0)
 268                         non_fips_allow = 1;
 269                 else if ((argv[0][0] == '-') &&
 270                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 271                         {
 272                         cipher=c;
 273                         }
 274                 else if (strcmp(*argv,"-none") == 0)
 275                         cipher=NULL;
 276                 else
 277                         {
 278                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 279 bad:
 280                         BIO_printf(bio_err,"options are\n");
 281                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 282                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 283                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 284                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 285                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 286                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 287                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 288                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 289                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 290                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 291                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 292                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 293                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 294 #ifndef OPENSSL_NO_ENGINE
 295                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 296 #endif
 297
 298                         BIO_printf(bio_err,"Cipher Types\n");
 299                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 300                                                show_ciphers,
 301                                                bio_err);
 302                         BIO_printf(bio_err,"\n");
 303
 304                         goto end;
 305                         }
 306                 argc--;
 307                 argv++;
 308                 }
 309
 310 #ifndef OPENSSL_NO_ENGINE
 311         setup_engine(bio_err, engine, 0);
 312 #endif
 313
 314         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 315                 {
 316                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 317                 goto end;
 318                 }
 319
 320         if (dgst == NULL)
 321                 {
 322                 if (in_FIPS_mode)
 323                         dgst = EVP_sha1();
 324                 else
 325                         dgst = EVP_md5();
 326                 }
 327
 328         if (bufsize != NULL)
 329                 {
 330                 unsigned long n;
 331
 332                 for (n=0; *bufsize; bufsize++)
 333                         {
 334                         i= *bufsize;
 335                         if ((i <= '9') && (i >= '0'))
 336                                 n=n*10+i-'0';
 337                         else if (i == 'k')
 338                                 {
 339                                 n*=1024;
 340                                 bufsize++;
 341                                 break;
 342                                 }
 343                         }
 344                 if (*bufsize != '\0')
 345                         {
 346                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 347                         goto end;
 348                         }
 349
 350                 /* It must be large enough for a base64 encoded line */
 351                 if (base64 && n < 80) n=80;
 352
 353                 bsize=(int)n;
 354                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 355                 }
 356
 357         strbuf=OPENSSL_malloc(SIZE);
 358         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 359         if ((buff == NULL) || (strbuf == NULL))
 360                 {
 361                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 362                 goto end;
 363                 }
 364
 365         in=BIO_new(BIO_s_file());
 366         out=BIO_new(BIO_s_file());
 367         if ((in == NULL) || (out == NULL))
 368                 {
 369                 ERR_print_errors(bio_err);
 370                 goto end;
 371                 }
 372         if (debug)
 373                 {
 374                 BIO_set_callback(in,BIO_debug_callback);
 375                 BIO_set_callback(out,BIO_debug_callback);
 376                 BIO_set_callback_arg(in,(char *)bio_err);
 377                 BIO_set_callback_arg(out,(char *)bio_err);
 378                 }
 379
 380         if (inf == NULL)
 381                 {
 382                 if (bufsize != NULL)
 383                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 384                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 385                 }
 386         else
 387                 {
 388                 if (BIO_read_filename(in,inf) <= 0)
 389                         {
 390                         perror(inf);
 391                         goto end;
 392                         }
 393                 }
 394
 395         if(!str && passarg) {
 396                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 397                         BIO_printf(bio_err, "Error getting password\n");
 398                         goto end;
 399                 }
 400                 str = pass;
 401         }
 402
 403         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 404                 {
 405                 for (;;)
 406                         {
 407                         char buf[200];
 408
 409                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 410                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 411                                      (enc)?"encryption":"decryption");
 412                         strbuf[0]='\0';
 413                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 414                         if (i == 0)
 415                                 {
 416                                 if (strbuf[0] == '\0')
 417                                         {
 418                                         ret=1;
 419                                         goto end;
 420                                         }
 421                                 str=strbuf;
 422                                 break;
 423                                 }
 424                         if (i < 0)
 425                                 {
 426                                 BIO_printf(bio_err,"bad password read\n");
 427                                 goto end;
 428                                 }
 429                         }
 430                 }
 431
 432
 433         if (outf == NULL)
 434                 {
 435                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 436                 if (bufsize != NULL)
 437                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 438 #ifdef OPENSSL_SYS_VMS
 439                 {
 440                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 441                 out = BIO_push(tmpbio, out);
 442                 }
 443 #endif
 444                 }
 445         else
 446                 {
 447                 if (BIO_write_filename(out,outf) <= 0)
 448                         {
 449                         perror(outf);
 450                         goto end;
 451                         }
 452                 }
 453
 454         rbio=in;
 455         wbio=out;
 456
 457         if (base64)
 458                 {
 459                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 460                         goto end;
 461                 if (debug)
 462                         {
 463                         BIO_set_callback(b64,BIO_debug_callback);
 464                         BIO_set_callback_arg(b64,(char *)bio_err);
 465                         }
 466                 if (olb64)
 467                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 468                 if (enc)
 469                         wbio=BIO_push(b64,wbio);
 470                 else
 471                         rbio=BIO_push(b64,rbio);
 472                 }
 473
 474         if (cipher != NULL)
 475                 {
 476                 /* Note that str is NULL if a key was passed on the command
 477                  * line, so we get no salt in that case. Is this a bug?
 478                  */
 479                 if (str != NULL)
 480                         {
 481                         /* Salt handling: if encrypting generate a salt and
 482                          * write to output BIO. If decrypting read salt from
 483                          * input BIO.
 484                          */
 485                         unsigned char *sptr;
 486                         if(nosalt) sptr = NULL;
 487                         else {
 488                                 if(enc) {
 489                                         if(hsalt) {
 490                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 491                                                         BIO_printf(bio_err,
 492                                                                 "invalid hex salt value\n");
 493                                                         goto end;
 494                                                 }
 495                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 496                                                 goto end;
 497                                         /* If -P option then don't bother writing */
 498                                         if((printkey != 2)
 499                                            && (BIO_write(wbio,magic,
 500                                                          sizeof magic-1) != sizeof magic-1
 501                                                || BIO_write(wbio,
 502                                                             (char *)salt,
 503                                                             sizeof salt) != sizeof salt)) {
 504                                                 BIO_printf(bio_err,"error writing output file\n");
 505                                                 goto end;
 506                                         }
 507                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 508                                           || BIO_read(rbio,
 509                                                       (unsigned char *)salt,
 510                                     sizeof salt) != sizeof salt) {
 511                                         BIO_printf(bio_err,"error reading input file\n");
 512                                         goto end;
 513                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 514                                     BIO_printf(bio_err,"bad magic number\n");
 515                                     goto end;
 516                                 }
 517
 518                                 sptr = salt;
 519                         }
 520
 521                         EVP_BytesToKey(cipher,dgst,sptr,
 522                                 (unsigned char *)str,
 523                                 strlen(str),1,key,iv);
 524                         /* zero the complete buffer or the string
 525                          * passed from the command line
 526                          * bug picked up by
 527                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 528                         if (str == strbuf)
 529                                 OPENSSL_cleanse(str,SIZE);
 530                         else
 531                                 OPENSSL_cleanse(str,strlen(str));
 532                         }
 533                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 534                         {
 535                         BIO_printf(bio_err,"invalid hex iv value\n");
 536                         goto end;
 537                         }
 538                 if ((hiv == NULL) && (str == NULL)
 539                     && EVP_CIPHER_iv_length(cipher) != 0)
 540                         {
 541                         /* No IV was explicitly set and no IV was generated
 542                          * during EVP_BytesToKey. Hence the IV is undefined,
 543                          * making correct decryption impossible. */
 544                         BIO_printf(bio_err, "iv undefined\n");
 545                         goto end;
 546                         }
 547                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 548                         {
 549                         BIO_printf(bio_err,"invalid hex key value\n");
 550                         goto end;
 551                         }
 552
 553                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 554                         goto end;
 555
 556                 /* Since we may be changing parameters work on the encryption
 557                  * context rather than calling BIO_set_cipher().
 558                  */
 559
 560                 BIO_get_cipher_ctx(benc, &ctx);
 561
 562                 if (non_fips_allow)
 563                         EVP_CIPHER_CTX_set_flags(ctx,
 564                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 565
 566                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 567                         {
 568                         BIO_printf(bio_err, "Error setting cipher %s\n",
 569                                 EVP_CIPHER_name(cipher));
 570                         ERR_print_errors(bio_err);
 571                         goto end;
 572                         }
 573
 574                 if (nopad)
 575                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 576
 577                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 578                         {
 579                         BIO_printf(bio_err, "Error setting cipher %s\n",
 580                                 EVP_CIPHER_name(cipher));
 581                         ERR_print_errors(bio_err);
 582                         goto end;
 583                         }
 584
 585                 if (debug)
 586                         {
 587                         BIO_set_callback(benc,BIO_debug_callback);
 588                         BIO_set_callback_arg(benc,(char *)bio_err);
 589                         }
 590
 591                 if (printkey)
 592                         {
 593                         if (!nosalt)
 594                                 {
 595                                 printf("salt=");
 596                                 for (i=0; i<(int)sizeof(salt); i++)
 597                                         printf("%02X",salt[i]);
 598                                 printf("\n");
 599                                 }
 600                         if (cipher->key_len > 0)
 601                                 {
 602                                 printf("key=");
 603                                 for (i=0; i<cipher->key_len; i++)
 604                                         printf("%02X",key[i]);
 605                                 printf("\n");
 606                                 }
 607                         if (cipher->iv_len > 0)
 608                                 {
 609                                 printf("iv =");
 610                                 for (i=0; i<cipher->iv_len; i++)
 611                                         printf("%02X",iv[i]);
 612                                 printf("\n");
 613                                 }
 614                         if (printkey == 2)
 615                                 {
 616                                 ret=0;
 617                                 goto end;
 618                                 }
 619                         }
 620                 }
 621
 622         /* Only encrypt/decrypt as we write the file */
 623         if (benc != NULL)
 624                 wbio=BIO_push(benc,wbio);
 625
 626         for (;;)
 627                 {
 628                 inl=BIO_read(rbio,(char *)buff,bsize);
 629                 if (inl <= 0) break;
 630                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 631                         {
 632                         BIO_printf(bio_err,"error writing output file\n");
 633                         goto end;
 634                         }
 635                 }
 636         if (!BIO_flush(wbio))
 637                 {
 638                 BIO_printf(bio_err,"bad decrypt\n");
 639                 goto end;
 640                 }
 641
 642         ret=0;
 643         if (verbose)
 644                 {
 645                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 646                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 647                 }
 648 end:
 649         ERR_print_errors(bio_err);
 650         if (strbuf != NULL) OPENSSL_free(strbuf);
 651         if (buff != NULL) OPENSSL_free(buff);
 652         if (in != NULL) BIO_free(in);
 653         if (out != NULL) BIO_free_all(out);
 654         if (benc != NULL) BIO_free(benc);
 655         if (b64 != NULL) BIO_free(b64);
 656         if(pass) OPENSSL_free(pass);
 657         apps_shutdown();
 658         OPENSSL_EXIT(ret);
 659         }
 660
 661 int set_hex(char *in, unsigned char *out, int size)
 662         {
 663         int i,n;
 664         unsigned char j;
 665
 666         n=strlen(in);
 667         if (n > (size*2))
 668                 {
 669                 BIO_printf(bio_err,"hex string is too long\n");
 670                 return(0);
 671                 }
 672         memset(out,0,size);
 673         for (i=0; i<n; i++)
 674                 {
 675                 j=(unsigned char)*in;
 676                 *(in++)='\0';
 677                 if (j == 0) break;
 678                 if ((j >= '0') && (j <= '9'))
 679                         j-='0';
 680                 else if ((j >= 'A') && (j <= 'F'))
 681                         j=j-'A'+10;
 682                 else if ((j >= 'a') && (j <= 'f'))
 683                         j=j-'a'+10;
 684                 else
 685                         {
 686                         BIO_printf(bio_err,"non-hex digit\n");
 687                         return(0);
 688                         }
 689                 if (i&1)
 690                         out[i/2]|=j;
 691                 else
 692                         out[i/2]=(j<<4);
 693                 }
 694         return(1);
 695         }