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 (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)
 335                 {
 336                 BIO_printf(bio_err, "AEAD ciphers not supported by the enc utility\n");
 337                 goto end;
 338                 }
 339
 340         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 341                 {
 342                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 343                 goto end;
 344                 }
 345
 346         if (dgst == NULL)
 347                 {
 348                 dgst = EVP_md5();
 349                 }
 350
 351         if (bufsize != NULL)
 352                 {
 353                 unsigned long n;
 354
 355                 for (n=0; *bufsize; bufsize++)
 356                         {
 357                         i= *bufsize;
 358                         if ((i <= '9') && (i >= '0'))
 359                                 n=n*10+i-'0';
 360                         else if (i == 'k')
 361                                 {
 362                                 n*=1024;
 363                                 bufsize++;
 364                                 break;
 365                                 }
 366                         }
 367                 if (*bufsize != '\0')
 368                         {
 369                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 370                         goto end;
 371                         }
 372
 373                 /* It must be large enough for a base64 encoded line */
 374                 if (base64 && n < 80) n=80;
 375
 376                 bsize=(int)n;
 377                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 378                 }
 379
 380         strbuf=OPENSSL_malloc(SIZE);
 381         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 382         if ((buff == NULL) || (strbuf == NULL))
 383                 {
 384                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 385                 goto end;
 386                 }
 387
 388         in=BIO_new(BIO_s_file());
 389         out=BIO_new(BIO_s_file());
 390         if ((in == NULL) || (out == NULL))
 391                 {
 392                 ERR_print_errors(bio_err);
 393                 goto end;
 394                 }
 395         if (debug)
 396                 {
 397                 BIO_set_callback(in,BIO_debug_callback);
 398                 BIO_set_callback(out,BIO_debug_callback);
 399                 BIO_set_callback_arg(in,(char *)bio_err);
 400                 BIO_set_callback_arg(out,(char *)bio_err);
 401                 }
 402
 403         if (inf == NULL)
 404                 {
 405 #ifndef OPENSSL_NO_SETVBUF_IONBF
 406                 if (bufsize != NULL)
 407                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 408 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 409                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 410                 }
 411         else
 412                 {
 413                 if (BIO_read_filename(in,inf) <= 0)
 414                         {
 415                         perror(inf);
 416                         goto end;
 417                         }
 418                 }
 419
 420         if(!str && passarg) {
 421                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 422                         BIO_printf(bio_err, "Error getting password\n");
 423                         goto end;
 424                 }
 425                 str = pass;
 426         }
 427
 428         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 429                 {
 430                 for (;;)
 431                         {
 432                         char buf[200];
 433
 434                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 435                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 436                                      (enc)?"encryption":"decryption");
 437                         strbuf[0]='\0';
 438                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 439                         if (i == 0)
 440                                 {
 441                                 if (strbuf[0] == '\0')
 442                                         {
 443                                         ret=1;
 444                                         goto end;
 445                                         }
 446                                 str=strbuf;
 447                                 break;
 448                                 }
 449                         if (i < 0)
 450                                 {
 451                                 BIO_printf(bio_err,"bad password read\n");
 452                                 goto end;
 453                                 }
 454                         }
 455                 }
 456
 457
 458         if (outf == NULL)
 459                 {
 460                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 461 #ifndef OPENSSL_NO_SETVBUF_IONBF
 462                 if (bufsize != NULL)
 463                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 464 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 465 #ifdef OPENSSL_SYS_VMS
 466                 {
 467                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 468                 out = BIO_push(tmpbio, out);
 469                 }
 470 #endif
 471                 }
 472         else
 473                 {
 474                 if (BIO_write_filename(out,outf) <= 0)
 475                         {
 476                         perror(outf);
 477                         goto end;
 478                         }
 479                 }
 480
 481         rbio=in;
 482         wbio=out;
 483
 484 #ifdef ZLIB
 485
 486         if (do_zlib)
 487                 {
 488                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
 489                         goto end;
 490                 if (enc)
 491                         wbio=BIO_push(bzl,wbio);
 492                 else
 493                         rbio=BIO_push(bzl,rbio);
 494                 }
 495 #endif
 496
 497         if (base64)
 498                 {
 499                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 500                         goto end;
 501                 if (debug)
 502                         {
 503                         BIO_set_callback(b64,BIO_debug_callback);
 504                         BIO_set_callback_arg(b64,(char *)bio_err);
 505                         }
 506                 if (olb64)
 507                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 508                 if (enc)
 509                         wbio=BIO_push(b64,wbio);
 510                 else
 511                         rbio=BIO_push(b64,rbio);
 512                 }
 513
 514         if (cipher != NULL)
 515                 {
 516                 /* Note that str is NULL if a key was passed on the command
 517                  * line, so we get no salt in that case. Is this a bug?
 518                  */
 519                 if (str != NULL)
 520                         {
 521                         /* Salt handling: if encrypting generate a salt and
 522                          * write to output BIO. If decrypting read salt from
 523                          * input BIO.
 524                          */
 525                         unsigned char *sptr;
 526                         if(nosalt) sptr = NULL;
 527                         else {
 528                                 if(enc) {
 529                                         if(hsalt) {
 530                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 531                                                         BIO_printf(bio_err,
 532                                                                 "invalid hex salt value\n");
 533                                                         goto end;
 534                                                 }
 535                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 536                                                 goto end;
 537                                         /* If -P option then don't bother writing */
 538                                         if((printkey != 2)
 539                                            && (BIO_write(wbio,magic,
 540                                                          sizeof magic-1) != sizeof magic-1
 541                                                || BIO_write(wbio,
 542                                                             (char *)salt,
 543                                                             sizeof salt) != sizeof salt)) {
 544                                                 BIO_printf(bio_err,"error writing output file\n");
 545                                                 goto end;
 546                                         }
 547                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 548                                           || BIO_read(rbio,
 549                                                       (unsigned char *)salt,
 550                                     sizeof salt) != sizeof salt) {
 551                                         BIO_printf(bio_err,"error reading input file\n");
 552                                         goto end;
 553                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 554                                     BIO_printf(bio_err,"bad magic number\n");
 555                                     goto end;
 556                                 }
 557
 558                                 sptr = salt;
 559                         }
 560
 561                         if (!EVP_BytesToKey(cipher,dgst,sptr,
 562                                             (unsigned char *)str,
 563                                             strlen(str),1,key,iv))
 564                                 {
 565                                 BIO_printf(bio_err, "EVP_BytesToKey failed\n");
 566                                 goto end;
 567                                 }
 568                         /* zero the complete buffer or the string
 569                          * passed from the command line
 570                          * bug picked up by
 571                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 572                         if (str == strbuf)
 573                                 OPENSSL_cleanse(str,SIZE);
 574                         else
 575                                 OPENSSL_cleanse(str,strlen(str));
 576                         }
 577                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 578                         {
 579                         BIO_printf(bio_err,"invalid hex iv value\n");
 580                         goto end;
 581                         }
 582                 if ((hiv == NULL) && (str == NULL)
 583                     && EVP_CIPHER_iv_length(cipher) != 0)
 584                         {
 585                         /* No IV was explicitly set and no IV was generated
 586                          * during EVP_BytesToKey. Hence the IV is undefined,
 587                          * making correct decryption impossible. */
 588                         BIO_printf(bio_err, "iv undefined\n");
 589                         goto end;
 590                         }
 591                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 592                         {
 593                         BIO_printf(bio_err,"invalid hex key value\n");
 594                         goto end;
 595                         }
 596
 597                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 598                         goto end;
 599
 600                 /* Since we may be changing parameters work on the encryption
 601                  * context rather than calling BIO_set_cipher().
 602                  */
 603
 604                 BIO_get_cipher_ctx(benc, &ctx);
 605
 606                 if (non_fips_allow)
 607                         EVP_CIPHER_CTX_set_flags(ctx,
 608                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 609
 610                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 611                         {
 612                         BIO_printf(bio_err, "Error setting cipher %s\n",
 613                                 EVP_CIPHER_name(cipher));
 614                         ERR_print_errors(bio_err);
 615                         goto end;
 616                         }
 617
 618                 if (nopad)
 619                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 620
 621                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 622                         {
 623                         BIO_printf(bio_err, "Error setting cipher %s\n",
 624                                 EVP_CIPHER_name(cipher));
 625                         ERR_print_errors(bio_err);
 626                         goto end;
 627                         }
 628
 629                 if (debug)
 630                         {
 631                         BIO_set_callback(benc,BIO_debug_callback);
 632                         BIO_set_callback_arg(benc,(char *)bio_err);
 633                         }
 634
 635                 if (printkey)
 636                         {
 637                         if (!nosalt)
 638                                 {
 639                                 printf("salt=");
 640                                 for (i=0; i<(int)sizeof(salt); i++)
 641                                         printf("%02X",salt[i]);
 642                                 printf("\n");
 643                                 }
 644                         if (cipher->key_len > 0)
 645                                 {
 646                                 printf("key=");
 647                                 for (i=0; i<cipher->key_len; i++)
 648                                         printf("%02X",key[i]);
 649                                 printf("\n");
 650                                 }
 651                         if (cipher->iv_len > 0)
 652                                 {
 653                                 printf("iv =");
 654                                 for (i=0; i<cipher->iv_len; i++)
 655                                         printf("%02X",iv[i]);
 656                                 printf("\n");
 657                                 }
 658                         if (printkey == 2)
 659                                 {
 660                                 ret=0;
 661                                 goto end;
 662                                 }
 663                         }
 664                 }
 665
 666         /* Only encrypt/decrypt as we write the file */
 667         if (benc != NULL)
 668                 wbio=BIO_push(benc,wbio);
 669
 670         for (;;)
 671                 {
 672                 inl=BIO_read(rbio,(char *)buff,bsize);
 673                 if (inl <= 0) break;
 674                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 675                         {
 676                         BIO_printf(bio_err,"error writing output file\n");
 677                         goto end;
 678                         }
 679                 }
 680         if (!BIO_flush(wbio))
 681                 {
 682                 BIO_printf(bio_err,"bad decrypt\n");
 683                 goto end;
 684                 }
 685
 686         ret=0;
 687         if (verbose)
 688                 {
 689                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 690                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 691                 }
 692 end:
 693         ERR_print_errors(bio_err);
 694         if (strbuf != NULL) OPENSSL_free(strbuf);
 695         if (buff != NULL) OPENSSL_free(buff);
 696         if (in != NULL) BIO_free(in);
 697         if (out != NULL) BIO_free_all(out);
 698         if (benc != NULL) BIO_free(benc);
 699         if (b64 != NULL) BIO_free(b64);
 700 #ifdef ZLIB
 701         if (bzl != NULL) BIO_free(bzl);
 702 #endif
 703         if(pass) OPENSSL_free(pass);
 704         apps_shutdown();
 705         OPENSSL_EXIT(ret);
 706         }
 707
 708 int set_hex(char *in, unsigned char *out, int size)
 709         {
 710         int i,n;
 711         unsigned char j;
 712
 713         n=strlen(in);
 714         if (n > (size*2))
 715                 {
 716                 BIO_printf(bio_err,"hex string is too long\n");
 717                 return(0);
 718                 }
 719         memset(out,0,size);
 720         for (i=0; i<n; i++)
 721                 {
 722                 j=(unsigned char)*in;
 723                 *(in++)='\0';
 724                 if (j == 0) break;
 725                 if ((j >= '0') && (j <= '9'))
 726                         j-='0';
 727                 else if ((j >= 'A') && (j <= 'F'))
 728                         j=j-'A'+10;
 729                 else if ((j >= 'a') && (j <= 'f'))
 730                         j=j-'a'+10;
 731                 else
 732                         {
 733                         BIO_printf(bio_err,"non-hex digit\n");
 734                         return(0);
 735                         }
 736                 if (i&1)
 737                         out[i/2]|=j;
 738                 else
 739                         out[i/2]=(j<<4);
 740                 }
 741         return(1);
 742         }