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 <openssl/comp.h>
  71 #include <ctype.h>
  72
  73 int set_hex(char *in,unsigned char *out,int size);
  74 #undef SIZE
  75 #undef BSIZE
  76 #undef PROG
  77
  78 #define SIZE    (512)
  79 #define BSIZE   (8*1024)
  80 #define PROG    enc_main
  81
  82 static void show_ciphers(const OBJ_NAME *name,void *bio_)
  83         {
  84         BIO *bio=bio_;
  85         static int n;
  86
  87         if(!islower((unsigned char)*name->name))
  88                 return;
  89
  90         BIO_printf(bio,"-%-25s",name->name);
  91         if(++n == 3)
  92                 {
  93                 BIO_printf(bio,"\n");
  94                 n=0;
  95                 }
  96         else
  97                 BIO_printf(bio," ");
  98         }
  99
 100 int MAIN(int, char **);
 101
 102 int MAIN(int argc, char **argv)
 103         {
 104         static const char magic[]="Salted__";
 105         char mbuf[sizeof magic-1];
 106         char *strbuf=NULL;
 107         unsigned char *buff=NULL,*bufsize=NULL;
 108         int bsize=BSIZE,verbose=0;
 109         int ret=1,inl;
 110         int nopad = 0;
 111         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 112         unsigned char salt[PKCS5_SALT_LEN];
 113         char *str=NULL, *passarg = NULL, *pass = NULL;
 114         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 115         char *md=NULL;
 116         int enc=1,printkey=0,i,base64=0;
 117 #ifdef ZLIB
 118         int do_zlib=0;
 119         BIO *bzl = NULL;
 120 #endif
 121         int debug=0,olb64=0,nosalt=0;
 122         const EVP_CIPHER *cipher=NULL,*c;
 123         EVP_CIPHER_CTX *ctx = NULL;
 124         char *inf=NULL,*outf=NULL;
 125         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 126 #define PROG_NAME_SIZE  39
 127         char pname[PROG_NAME_SIZE+1];
 128 #ifndef OPENSSL_NO_ENGINE
 129         char *engine = NULL;
 130 #endif
 131         const EVP_MD *dgst=NULL;
 132         int non_fips_allow = 0;
 133
 134         apps_startup();
 135
 136         if (bio_err == NULL)
 137                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 138                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 139
 140         if (!load_config(bio_err, NULL))
 141                 goto end;
 142
 143         /* first check the program name */
 144         program_name(argv[0],pname,sizeof pname);
 145         if (strcmp(pname,"base64") == 0)
 146                 base64=1;
 147 #ifdef ZLIB
 148         if (strcmp(pname,"zlib") == 0)
 149                 do_zlib=1;
 150 #endif
 151
 152         cipher=EVP_get_cipherbyname(pname);
 153 #ifdef ZLIB
 154         if (!do_zlib && !base64 && (cipher == NULL)
 155                                 && (strcmp(pname,"enc") != 0))
 156 #else
 157         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 158 #endif
 159                 {
 160                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 161                 goto bad;
 162                 }
 163
 164         argc--;
 165         argv++;
 166         while (argc >= 1)
 167                 {
 168                 if      (strcmp(*argv,"-e") == 0)
 169                         enc=1;
 170                 else if (strcmp(*argv,"-in") == 0)
 171                         {
 172                         if (--argc < 1) goto bad;
 173                         inf= *(++argv);
 174                         }
 175                 else if (strcmp(*argv,"-out") == 0)
 176                         {
 177                         if (--argc < 1) goto bad;
 178                         outf= *(++argv);
 179                         }
 180                 else if (strcmp(*argv,"-pass") == 0)
 181                         {
 182                         if (--argc < 1) goto bad;
 183                         passarg= *(++argv);
 184                         }
 185 #ifndef OPENSSL_NO_ENGINE
 186                 else if (strcmp(*argv,"-engine") == 0)
 187                         {
 188                         if (--argc < 1) goto bad;
 189                         engine= *(++argv);
 190                         }
 191 #endif
 192                 else if (strcmp(*argv,"-d") == 0)
 193                         enc=0;
 194                 else if (strcmp(*argv,"-p") == 0)
 195                         printkey=1;
 196                 else if (strcmp(*argv,"-v") == 0)
 197                         verbose=1;
 198                 else if (strcmp(*argv,"-nopad") == 0)
 199                         nopad=1;
 200                 else if (strcmp(*argv,"-salt") == 0)
 201                         nosalt=0;
 202                 else if (strcmp(*argv,"-nosalt") == 0)
 203                         nosalt=1;
 204                 else if (strcmp(*argv,"-debug") == 0)
 205                         debug=1;
 206                 else if (strcmp(*argv,"-P") == 0)
 207                         printkey=2;
 208                 else if (strcmp(*argv,"-A") == 0)
 209                         olb64=1;
 210                 else if (strcmp(*argv,"-a") == 0)
 211                         base64=1;
 212                 else if (strcmp(*argv,"-base64") == 0)
 213                         base64=1;
 214 #ifdef ZLIB
 215                 else if (strcmp(*argv,"-z") == 0)
 216                         do_zlib=1;
 217 #endif
 218                 else if (strcmp(*argv,"-bufsize") == 0)
 219                         {
 220                         if (--argc < 1) goto bad;
 221                         bufsize=(unsigned char *)*(++argv);
 222                         }
 223                 else if (strcmp(*argv,"-k") == 0)
 224                         {
 225                         if (--argc < 1) goto bad;
 226                         str= *(++argv);
 227                         }
 228                 else if (strcmp(*argv,"-kfile") == 0)
 229                         {
 230                         static char buf[128];
 231                         FILE *infile;
 232                         char *file;
 233
 234                         if (--argc < 1) goto bad;
 235                         file= *(++argv);
 236                         infile=fopen(file,"r");
 237                         if (infile == NULL)
 238                                 {
 239                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 240                                         file);
 241                                 goto bad;
 242                                 }
 243                         buf[0]='\0';
 244                         if (!fgets(buf,sizeof buf,infile))
 245                                 {
 246                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 247                                         file);
 248                                 goto bad;
 249                                 }
 250                         fclose(infile);
 251                         i=strlen(buf);
 252                         if ((i > 0) &&
 253                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 254                                 buf[--i]='\0';
 255                         if ((i > 0) &&
 256                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 257                                 buf[--i]='\0';
 258                         if (i < 1)
 259                                 {
 260                                 BIO_printf(bio_err,"zero length password\n");
 261                                 goto bad;
 262                                 }
 263                         str=buf;
 264                         }
 265                 else if (strcmp(*argv,"-K") == 0)
 266                         {
 267                         if (--argc < 1) goto bad;
 268                         hkey= *(++argv);
 269                         }
 270                 else if (strcmp(*argv,"-S") == 0)
 271                         {
 272                         if (--argc < 1) goto bad;
 273                         hsalt= *(++argv);
 274                         }
 275                 else if (strcmp(*argv,"-iv") == 0)
 276                         {
 277                         if (--argc < 1) goto bad;
 278                         hiv= *(++argv);
 279                         }
 280                 else if (strcmp(*argv,"-md") == 0)
 281                         {
 282                         if (--argc < 1) goto bad;
 283                         md= *(++argv);
 284                         }
 285                 else if (strcmp(*argv,"-non-fips-allow") == 0)
 286                         non_fips_allow = 1;
 287                 else if ((argv[0][0] == '-') &&
 288                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 289                         {
 290                         cipher=c;
 291                         }
 292                 else if (strcmp(*argv,"-none") == 0)
 293                         cipher=NULL;
 294                 else
 295                         {
 296                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 297 bad:
 298                         BIO_printf(bio_err,"options are\n");
 299                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 300                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 301                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 302                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 303                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 304                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 305                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 306                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 307                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 308                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 309                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
 310                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 311                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 312                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 313                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
 314 #ifndef OPENSSL_NO_ENGINE
 315                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 316 #endif
 317
 318                         BIO_printf(bio_err,"Cipher Types\n");
 319                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 320                                                show_ciphers,
 321                                                bio_err);
 322                         BIO_printf(bio_err,"\n");
 323
 324                         goto end;
 325                         }
 326                 argc--;
 327                 argv++;
 328                 }
 329
 330 #ifndef OPENSSL_NO_ENGINE
 331         setup_engine(bio_err, engine, 0);
 332 #endif
 333
 334         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 335                 {
 336                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 337                 goto end;
 338                 }
 339
 340         if (dgst == NULL)
 341                 {
 342                 dgst = EVP_md5();
 343                 }
 344
 345         if (bufsize != NULL)
 346                 {
 347                 unsigned long n;
 348
 349                 for (n=0; *bufsize; bufsize++)
 350                         {
 351                         i= *bufsize;
 352                         if ((i <= '9') && (i >= '0'))
 353                                 n=n*10+i-'0';
 354                         else if (i == 'k')
 355                                 {
 356                                 n*=1024;
 357                                 bufsize++;
 358                                 break;
 359                                 }
 360                         }
 361                 if (*bufsize != '\0')
 362                         {
 363                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 364                         goto end;
 365                         }
 366
 367                 /* It must be large enough for a base64 encoded line */
 368                 if (base64 && n < 80) n=80;
 369
 370                 bsize=(int)n;
 371                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 372                 }
 373
 374         strbuf=OPENSSL_malloc(SIZE);
 375         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 376         if ((buff == NULL) || (strbuf == NULL))
 377                 {
 378                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 379                 goto end;
 380                 }
 381
 382         in=BIO_new(BIO_s_file());
 383         out=BIO_new(BIO_s_file());
 384         if ((in == NULL) || (out == NULL))
 385                 {
 386                 ERR_print_errors(bio_err);
 387                 goto end;
 388                 }
 389         if (debug)
 390                 {
 391                 BIO_set_callback(in,BIO_debug_callback);
 392                 BIO_set_callback(out,BIO_debug_callback);
 393                 BIO_set_callback_arg(in,(char *)bio_err);
 394                 BIO_set_callback_arg(out,(char *)bio_err);
 395                 }
 396
 397         if (inf == NULL)
 398                 {
 399 #ifndef OPENSSL_NO_SETVBUF_IONBF
 400                 if (bufsize != NULL)
 401                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 402 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 403                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 404                 }
 405         else
 406                 {
 407                 if (BIO_read_filename(in,inf) <= 0)
 408                         {
 409                         perror(inf);
 410                         goto end;
 411                         }
 412                 }
 413
 414         if(!str && passarg) {
 415                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 416                         BIO_printf(bio_err, "Error getting password\n");
 417                         goto end;
 418                 }
 419                 str = pass;
 420         }
 421
 422         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 423                 {
 424                 for (;;)
 425                         {
 426                         char buf[200];
 427
 428                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 429                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 430                                      (enc)?"encryption":"decryption");
 431                         strbuf[0]='\0';
 432                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 433                         if (i == 0)
 434                                 {
 435                                 if (strbuf[0] == '\0')
 436                                         {
 437                                         ret=1;
 438                                         goto end;
 439                                         }
 440                                 str=strbuf;
 441                                 break;
 442                                 }
 443                         if (i < 0)
 444                                 {
 445                                 BIO_printf(bio_err,"bad password read\n");
 446                                 goto end;
 447                                 }
 448                         }
 449                 }
 450
 451
 452         if (outf == NULL)
 453                 {
 454                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 455 #ifndef OPENSSL_NO_SETVBUF_IONBF
 456                 if (bufsize != NULL)
 457                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 458 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 459 #ifdef OPENSSL_SYS_VMS
 460                 {
 461                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 462                 out = BIO_push(tmpbio, out);
 463                 }
 464 #endif
 465                 }
 466         else
 467                 {
 468                 if (BIO_write_filename(out,outf) <= 0)
 469                         {
 470                         perror(outf);
 471                         goto end;
 472                         }
 473                 }
 474
 475         rbio=in;
 476         wbio=out;
 477
 478 #ifdef ZLIB
 479
 480         if (do_zlib)
 481                 {
 482                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
 483                         goto end;
 484                 if (enc)
 485                         wbio=BIO_push(bzl,wbio);
 486                 else
 487                         rbio=BIO_push(bzl,rbio);
 488                 }
 489 #endif
 490
 491         if (base64)
 492                 {
 493                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 494                         goto end;
 495                 if (debug)
 496                         {
 497                         BIO_set_callback(b64,BIO_debug_callback);
 498                         BIO_set_callback_arg(b64,(char *)bio_err);
 499                         }
 500                 if (olb64)
 501                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 502                 if (enc)
 503                         wbio=BIO_push(b64,wbio);
 504                 else
 505                         rbio=BIO_push(b64,rbio);
 506                 }
 507
 508         if (cipher != NULL)
 509                 {
 510                 /* Note that str is NULL if a key was passed on the command
 511                  * line, so we get no salt in that case. Is this a bug?
 512                  */
 513                 if (str != NULL)
 514                         {
 515                         /* Salt handling: if encrypting generate a salt and
 516                          * write to output BIO. If decrypting read salt from
 517                          * input BIO.
 518                          */
 519                         unsigned char *sptr;
 520                         if(nosalt) sptr = NULL;
 521                         else {
 522                                 if(enc) {
 523                                         if(hsalt) {
 524                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 525                                                         BIO_printf(bio_err,
 526                                                                 "invalid hex salt value\n");
 527                                                         goto end;
 528                                                 }
 529                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 530                                                 goto end;
 531                                         /* If -P option then don't bother writing */
 532                                         if((printkey != 2)
 533                                            && (BIO_write(wbio,magic,
 534                                                          sizeof magic-1) != sizeof magic-1
 535                                                || BIO_write(wbio,
 536                                                             (char *)salt,
 537                                                             sizeof salt) != sizeof salt)) {
 538                                                 BIO_printf(bio_err,"error writing output file\n");
 539                                                 goto end;
 540                                         }
 541                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 542                                           || BIO_read(rbio,
 543                                                       (unsigned char *)salt,
 544                                     sizeof salt) != sizeof salt) {
 545                                         BIO_printf(bio_err,"error reading input file\n");
 546                                         goto end;
 547                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 548                                     BIO_printf(bio_err,"bad magic number\n");
 549                                     goto end;
 550                                 }
 551
 552                                 sptr = salt;
 553                         }
 554
 555                         if (!EVP_BytesToKey(cipher,dgst,sptr,
 556                                             (unsigned char *)str,
 557                                             strlen(str),1,key,iv))
 558                                 {
 559                                 BIO_printf(bio_err, "EVP_BytesToKey failed\n");
 560                                 goto end;
 561                                 }
 562                         /* zero the complete buffer or the string
 563                          * passed from the command line
 564                          * bug picked up by
 565                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 566                         if (str == strbuf)
 567                                 OPENSSL_cleanse(str,SIZE);
 568                         else
 569                                 OPENSSL_cleanse(str,strlen(str));
 570                         }
 571                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 572                         {
 573                         BIO_printf(bio_err,"invalid hex iv value\n");
 574                         goto end;
 575                         }
 576                 if ((hiv == NULL) && (str == NULL)
 577                     && EVP_CIPHER_iv_length(cipher) != 0)
 578                         {
 579                         /* No IV was explicitly set and no IV was generated
 580                          * during EVP_BytesToKey. Hence the IV is undefined,
 581                          * making correct decryption impossible. */
 582                         BIO_printf(bio_err, "iv undefined\n");
 583                         goto end;
 584                         }
 585                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 586                         {
 587                         BIO_printf(bio_err,"invalid hex key value\n");
 588                         goto end;
 589                         }
 590
 591                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 592                         goto end;
 593
 594                 /* Since we may be changing parameters work on the encryption
 595                  * context rather than calling BIO_set_cipher().
 596                  */
 597
 598                 BIO_get_cipher_ctx(benc, &ctx);
 599
 600                 if (non_fips_allow)
 601                         EVP_CIPHER_CTX_set_flags(ctx,
 602                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 603
 604                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 605                         {
 606                         BIO_printf(bio_err, "Error setting cipher %s\n",
 607                                 EVP_CIPHER_name(cipher));
 608                         ERR_print_errors(bio_err);
 609                         goto end;
 610                         }
 611
 612                 if (nopad)
 613                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 614
 615                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 616                         {
 617                         BIO_printf(bio_err, "Error setting cipher %s\n",
 618                                 EVP_CIPHER_name(cipher));
 619                         ERR_print_errors(bio_err);
 620                         goto end;
 621                         }
 622
 623                 if (debug)
 624                         {
 625                         BIO_set_callback(benc,BIO_debug_callback);
 626                         BIO_set_callback_arg(benc,(char *)bio_err);
 627                         }
 628
 629                 if (printkey)
 630                         {
 631                         if (!nosalt)
 632                                 {
 633                                 printf("salt=");
 634                                 for (i=0; i<(int)sizeof(salt); i++)
 635                                         printf("%02X",salt[i]);
 636                                 printf("\n");
 637                                 }
 638                         if (cipher->key_len > 0)
 639                                 {
 640                                 printf("key=");
 641                                 for (i=0; i<cipher->key_len; i++)
 642                                         printf("%02X",key[i]);
 643                                 printf("\n");
 644                                 }
 645                         if (cipher->iv_len > 0)
 646                                 {
 647                                 printf("iv =");
 648                                 for (i=0; i<cipher->iv_len; i++)
 649                                         printf("%02X",iv[i]);
 650                                 printf("\n");
 651                                 }
 652                         if (printkey == 2)
 653                                 {
 654                                 ret=0;
 655                                 goto end;
 656                                 }
 657                         }
 658                 }
 659
 660         /* Only encrypt/decrypt as we write the file */
 661         if (benc != NULL)
 662                 wbio=BIO_push(benc,wbio);
 663
 664         for (;;)
 665                 {
 666                 inl=BIO_read(rbio,(char *)buff,bsize);
 667                 if (inl <= 0) break;
 668                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 669                         {
 670                         BIO_printf(bio_err,"error writing output file\n");
 671                         goto end;
 672                         }
 673                 }
 674         if (!BIO_flush(wbio))
 675                 {
 676                 BIO_printf(bio_err,"bad decrypt\n");
 677                 goto end;
 678                 }
 679
 680         ret=0;
 681         if (verbose)
 682                 {
 683                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 684                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 685                 }
 686 end:
 687         ERR_print_errors(bio_err);
 688         if (strbuf != NULL) OPENSSL_free(strbuf);
 689         if (buff != NULL) OPENSSL_free(buff);
 690         if (in != NULL) BIO_free(in);
 691         if (out != NULL) BIO_free_all(out);
 692         if (benc != NULL) BIO_free(benc);
 693         if (b64 != NULL) BIO_free(b64);
 694 #ifdef ZLIB
 695         if (bzl != NULL) BIO_free(bzl);
 696 #endif
 697         if(pass) OPENSSL_free(pass);
 698         apps_shutdown();
 699         OPENSSL_EXIT(ret);
 700         }
 701
 702 int set_hex(char *in, unsigned char *out, int size)
 703         {
 704         int i,n;
 705         unsigned char j;
 706
 707         n=strlen(in);
 708         if (n > (size*2))
 709                 {
 710                 BIO_printf(bio_err,"hex string is too long\n");
 711                 return(0);
 712                 }
 713         memset(out,0,size);
 714         for (i=0; i<n; i++)
 715                 {
 716                 j=(unsigned char)*in;
 717                 *(in++)='\0';
 718                 if (j == 0) break;
 719                 if ((j >= '0') && (j <= '9'))
 720                         j-='0';
 721                 else if ((j >= 'A') && (j <= 'F'))
 722                         j=j-'A'+10;
 723                 else if ((j >= 'a') && (j <= 'f'))
 724                         j=j-'a'+10;
 725                 else
 726                         {
 727                         BIO_printf(bio_err,"non-hex digit\n");
 728                         return(0);
 729                         }
 730                 if (i&1)
 731                         out[i/2]|=j;
 732                 else
 733                         out[i/2]=(j<<4);
 734                 }
 735         return(1);
 736         }