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 #ifndef OPENSSL_NO_COMP
  71 #include <openssl/comp.h>
  72 #endif
  73 #include <ctype.h>
  74
  75 int set_hex(char *in,unsigned char *out,int size);
  76 #undef SIZE
  77 #undef BSIZE
  78 #undef PROG
  79
  80 #define SIZE    (512)
  81 #define BSIZE   (8*1024)
  82 #define PROG    enc_main
  83
  84 static void show_ciphers(const OBJ_NAME *name,void *bio_)
  85         {
  86         BIO *bio=bio_;
  87         static int n;
  88
  89         if(!islower((unsigned char)*name->name))
  90                 return;
  91
  92         BIO_printf(bio,"-%-25s",name->name);
  93         if(++n == 3)
  94                 {
  95                 BIO_printf(bio,"\n");
  96                 n=0;
  97                 }
  98         else
  99                 BIO_printf(bio," ");
 100         }
 101
 102 int MAIN(int, char **);
 103
 104 int MAIN(int argc, char **argv)
 105         {
 106         static const char magic[]="Salted__";
 107         char mbuf[sizeof magic-1];
 108         char *strbuf=NULL;
 109         unsigned char *buff=NULL,*bufsize=NULL;
 110         int bsize=BSIZE,verbose=0;
 111         int ret=1,inl;
 112         int nopad = 0;
 113         unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH];
 114         unsigned char salt[PKCS5_SALT_LEN];
 115         char *str=NULL, *passarg = NULL, *pass = NULL;
 116         char *hkey=NULL,*hiv=NULL,*hsalt = NULL;
 117         char *md=NULL;
 118         int enc=1,printkey=0,i,base64=0;
 119 #ifdef ZLIB
 120         int do_zlib=0;
 121         BIO *bzl = NULL;
 122 #endif
 123         int debug=0,olb64=0,nosalt=0;
 124         const EVP_CIPHER *cipher=NULL,*c;
 125         EVP_CIPHER_CTX *ctx = NULL;
 126         char *inf=NULL,*outf=NULL;
 127         BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL;
 128 #define PROG_NAME_SIZE  39
 129         char pname[PROG_NAME_SIZE+1];
 130 #ifndef OPENSSL_NO_ENGINE
 131         char *engine = NULL;
 132 #endif
 133         const EVP_MD *dgst=NULL;
 134         int non_fips_allow = 0;
 135
 136         apps_startup();
 137
 138         if (bio_err == NULL)
 139                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 140                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 141
 142         if (!load_config(bio_err, NULL))
 143                 goto end;
 144
 145         /* first check the program name */
 146         program_name(argv[0],pname,sizeof pname);
 147         if (strcmp(pname,"base64") == 0)
 148                 base64=1;
 149 #ifdef ZLIB
 150         if (strcmp(pname,"zlib") == 0)
 151                 do_zlib=1;
 152 #endif
 153
 154         cipher=EVP_get_cipherbyname(pname);
 155 #ifdef ZLIB
 156         if (!do_zlib && !base64 && (cipher == NULL)
 157                                 && (strcmp(pname,"enc") != 0))
 158 #else
 159         if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0))
 160 #endif
 161                 {
 162                 BIO_printf(bio_err,"%s is an unknown cipher\n",pname);
 163                 goto bad;
 164                 }
 165
 166         argc--;
 167         argv++;
 168         while (argc >= 1)
 169                 {
 170                 if      (strcmp(*argv,"-e") == 0)
 171                         enc=1;
 172                 else if (strcmp(*argv,"-in") == 0)
 173                         {
 174                         if (--argc < 1) goto bad;
 175                         inf= *(++argv);
 176                         }
 177                 else if (strcmp(*argv,"-out") == 0)
 178                         {
 179                         if (--argc < 1) goto bad;
 180                         outf= *(++argv);
 181                         }
 182                 else if (strcmp(*argv,"-pass") == 0)
 183                         {
 184                         if (--argc < 1) goto bad;
 185                         passarg= *(++argv);
 186                         }
 187 #ifndef OPENSSL_NO_ENGINE
 188                 else if (strcmp(*argv,"-engine") == 0)
 189                         {
 190                         if (--argc < 1) goto bad;
 191                         engine= *(++argv);
 192                         }
 193 #endif
 194                 else if (strcmp(*argv,"-d") == 0)
 195                         enc=0;
 196                 else if (strcmp(*argv,"-p") == 0)
 197                         printkey=1;
 198                 else if (strcmp(*argv,"-v") == 0)
 199                         verbose=1;
 200                 else if (strcmp(*argv,"-nopad") == 0)
 201                         nopad=1;
 202                 else if (strcmp(*argv,"-salt") == 0)
 203                         nosalt=0;
 204                 else if (strcmp(*argv,"-nosalt") == 0)
 205                         nosalt=1;
 206                 else if (strcmp(*argv,"-debug") == 0)
 207                         debug=1;
 208                 else if (strcmp(*argv,"-P") == 0)
 209                         printkey=2;
 210                 else if (strcmp(*argv,"-A") == 0)
 211                         olb64=1;
 212                 else if (strcmp(*argv,"-a") == 0)
 213                         base64=1;
 214                 else if (strcmp(*argv,"-base64") == 0)
 215                         base64=1;
 216 #ifdef ZLIB
 217                 else if (strcmp(*argv,"-z") == 0)
 218                         do_zlib=1;
 219 #endif
 220                 else if (strcmp(*argv,"-bufsize") == 0)
 221                         {
 222                         if (--argc < 1) goto bad;
 223                         bufsize=(unsigned char *)*(++argv);
 224                         }
 225                 else if (strcmp(*argv,"-k") == 0)
 226                         {
 227                         if (--argc < 1) goto bad;
 228                         str= *(++argv);
 229                         }
 230                 else if (strcmp(*argv,"-kfile") == 0)
 231                         {
 232                         static char buf[128];
 233                         FILE *infile;
 234                         char *file;
 235
 236                         if (--argc < 1) goto bad;
 237                         file= *(++argv);
 238                         infile=fopen(file,"r");
 239                         if (infile == NULL)
 240                                 {
 241                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 242                                         file);
 243                                 goto bad;
 244                                 }
 245                         buf[0]='\0';
 246                         if (!fgets(buf,sizeof buf,infile))
 247                                 {
 248                                 BIO_printf(bio_err,"unable to read key from '%s'\n",
 249                                         file);
 250                                 goto bad;
 251                                 }
 252                         fclose(infile);
 253                         i=strlen(buf);
 254                         if ((i > 0) &&
 255                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 256                                 buf[--i]='\0';
 257                         if ((i > 0) &&
 258                                 ((buf[i-1] == '\n') || (buf[i-1] == '\r')))
 259                                 buf[--i]='\0';
 260                         if (i < 1)
 261                                 {
 262                                 BIO_printf(bio_err,"zero length password\n");
 263                                 goto bad;
 264                                 }
 265                         str=buf;
 266                         }
 267                 else if (strcmp(*argv,"-K") == 0)
 268                         {
 269                         if (--argc < 1) goto bad;
 270                         hkey= *(++argv);
 271                         }
 272                 else if (strcmp(*argv,"-S") == 0)
 273                         {
 274                         if (--argc < 1) goto bad;
 275                         hsalt= *(++argv);
 276                         }
 277                 else if (strcmp(*argv,"-iv") == 0)
 278                         {
 279                         if (--argc < 1) goto bad;
 280                         hiv= *(++argv);
 281                         }
 282                 else if (strcmp(*argv,"-md") == 0)
 283                         {
 284                         if (--argc < 1) goto bad;
 285                         md= *(++argv);
 286                         }
 287                 else if (strcmp(*argv,"-non-fips-allow") == 0)
 288                         non_fips_allow = 1;
 289                 else if ((argv[0][0] == '-') &&
 290                         ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL))
 291                         {
 292                         cipher=c;
 293                         }
 294                 else if (strcmp(*argv,"-none") == 0)
 295                         cipher=NULL;
 296                 else
 297                         {
 298                         BIO_printf(bio_err,"unknown option '%s'\n",*argv);
 299 bad:
 300                         BIO_printf(bio_err,"options are\n");
 301                         BIO_printf(bio_err,"%-14s input file\n","-in <file>");
 302                         BIO_printf(bio_err,"%-14s output file\n","-out <file>");
 303                         BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>");
 304                         BIO_printf(bio_err,"%-14s encrypt\n","-e");
 305                         BIO_printf(bio_err,"%-14s decrypt\n","-d");
 306                         BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64");
 307                         BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k");
 308                         BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile");
 309                         BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md");
 310                         BIO_printf(bio_err,"%-14s   from a passphrase.  One of md2, md5, sha or sha1\n","");
 311                         BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S");
 312                         BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv");
 313                         BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]");
 314                         BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>");
 315                         BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad");
 316 #ifndef OPENSSL_NO_ENGINE
 317                         BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e");
 318 #endif
 319
 320                         BIO_printf(bio_err,"Cipher Types\n");
 321                         OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 322                                                show_ciphers,
 323                                                bio_err);
 324                         BIO_printf(bio_err,"\n");
 325
 326                         goto end;
 327                         }
 328                 argc--;
 329                 argv++;
 330                 }
 331
 332 #ifndef OPENSSL_NO_ENGINE
 333         setup_engine(bio_err, engine, 0);
 334 #endif
 335
 336         if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)
 337                 {
 338                 BIO_printf(bio_err, "AEAD ciphers not supported by the enc utility\n");
 339                 goto end;
 340                 }
 341
 342         if (md && (dgst=EVP_get_digestbyname(md)) == NULL)
 343                 {
 344                 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md);
 345                 goto end;
 346                 }
 347
 348         if (dgst == NULL)
 349                 {
 350                 dgst = EVP_md5();
 351                 }
 352
 353         if (bufsize != NULL)
 354                 {
 355                 unsigned long n;
 356
 357                 for (n=0; *bufsize; bufsize++)
 358                         {
 359                         i= *bufsize;
 360                         if ((i <= '9') && (i >= '0'))
 361                                 n=n*10+i-'0';
 362                         else if (i == 'k')
 363                                 {
 364                                 n*=1024;
 365                                 bufsize++;
 366                                 break;
 367                                 }
 368                         }
 369                 if (*bufsize != '\0')
 370                         {
 371                         BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
 372                         goto end;
 373                         }
 374
 375                 /* It must be large enough for a base64 encoded line */
 376                 if (base64 && n < 80) n=80;
 377
 378                 bsize=(int)n;
 379                 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
 380                 }
 381
 382         strbuf=OPENSSL_malloc(SIZE);
 383         buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 384         if ((buff == NULL) || (strbuf == NULL))
 385                 {
 386                 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
 387                 goto end;
 388                 }
 389
 390         in=BIO_new(BIO_s_file());
 391         out=BIO_new(BIO_s_file());
 392         if ((in == NULL) || (out == NULL))
 393                 {
 394                 ERR_print_errors(bio_err);
 395                 goto end;
 396                 }
 397         if (debug)
 398                 {
 399                 BIO_set_callback(in,BIO_debug_callback);
 400                 BIO_set_callback(out,BIO_debug_callback);
 401                 BIO_set_callback_arg(in,(char *)bio_err);
 402                 BIO_set_callback_arg(out,(char *)bio_err);
 403                 }
 404
 405         if (inf == NULL)
 406                 {
 407 #ifndef OPENSSL_NO_SETVBUF_IONBF
 408                 if (bufsize != NULL)
 409                         setvbuf(stdin, (char *)NULL, _IONBF, 0);
 410 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 411                 BIO_set_fp(in,stdin,BIO_NOCLOSE);
 412                 }
 413         else
 414                 {
 415                 if (BIO_read_filename(in,inf) <= 0)
 416                         {
 417                         perror(inf);
 418                         goto end;
 419                         }
 420                 }
 421
 422         if(!str && passarg) {
 423                 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 424                         BIO_printf(bio_err, "Error getting password\n");
 425                         goto end;
 426                 }
 427                 str = pass;
 428         }
 429
 430         if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
 431                 {
 432                 for (;;)
 433                         {
 434                         char buf[200];
 435
 436                         BIO_snprintf(buf,sizeof buf,"enter %s %s password:",
 437                                      OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 438                                      (enc)?"encryption":"decryption");
 439                         strbuf[0]='\0';
 440                         i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
 441                         if (i == 0)
 442                                 {
 443                                 if (strbuf[0] == '\0')
 444                                         {
 445                                         ret=1;
 446                                         goto end;
 447                                         }
 448                                 str=strbuf;
 449                                 break;
 450                                 }
 451                         if (i < 0)
 452                                 {
 453                                 BIO_printf(bio_err,"bad password read\n");
 454                                 goto end;
 455                                 }
 456                         }
 457                 }
 458
 459
 460         if (outf == NULL)
 461                 {
 462                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 463 #ifndef OPENSSL_NO_SETVBUF_IONBF
 464                 if (bufsize != NULL)
 465                         setvbuf(stdout, (char *)NULL, _IONBF, 0);
 466 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */
 467 #ifdef OPENSSL_SYS_VMS
 468                 {
 469                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 470                 out = BIO_push(tmpbio, out);
 471                 }
 472 #endif
 473                 }
 474         else
 475                 {
 476                 if (BIO_write_filename(out,outf) <= 0)
 477                         {
 478                         perror(outf);
 479                         goto end;
 480                         }
 481                 }
 482
 483         rbio=in;
 484         wbio=out;
 485
 486 #ifdef ZLIB
 487
 488         if (do_zlib)
 489                 {
 490                 if ((bzl=BIO_new(BIO_f_zlib())) == NULL)
 491                         goto end;
 492                 if (enc)
 493                         wbio=BIO_push(bzl,wbio);
 494                 else
 495                         rbio=BIO_push(bzl,rbio);
 496                 }
 497 #endif
 498
 499         if (base64)
 500                 {
 501                 if ((b64=BIO_new(BIO_f_base64())) == NULL)
 502                         goto end;
 503                 if (debug)
 504                         {
 505                         BIO_set_callback(b64,BIO_debug_callback);
 506                         BIO_set_callback_arg(b64,(char *)bio_err);
 507                         }
 508                 if (olb64)
 509                         BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
 510                 if (enc)
 511                         wbio=BIO_push(b64,wbio);
 512                 else
 513                         rbio=BIO_push(b64,rbio);
 514                 }
 515
 516         if (cipher != NULL)
 517                 {
 518                 /* Note that str is NULL if a key was passed on the command
 519                  * line, so we get no salt in that case. Is this a bug?
 520                  */
 521                 if (str != NULL)
 522                         {
 523                         /* Salt handling: if encrypting generate a salt and
 524                          * write to output BIO. If decrypting read salt from
 525                          * input BIO.
 526                          */
 527                         unsigned char *sptr;
 528                         if(nosalt) sptr = NULL;
 529                         else {
 530                                 if(enc) {
 531                                         if(hsalt) {
 532                                                 if(!set_hex(hsalt,salt,sizeof salt)) {
 533                                                         BIO_printf(bio_err,
 534                                                                 "invalid hex salt value\n");
 535                                                         goto end;
 536                                                 }
 537                                         } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 538                                                 goto end;
 539                                         /* If -P option then don't bother writing */
 540                                         if((printkey != 2)
 541                                            && (BIO_write(wbio,magic,
 542                                                          sizeof magic-1) != sizeof magic-1
 543                                                || BIO_write(wbio,
 544                                                             (char *)salt,
 545                                                             sizeof salt) != sizeof salt)) {
 546                                                 BIO_printf(bio_err,"error writing output file\n");
 547                                                 goto end;
 548                                         }
 549                                 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
 550                                           || BIO_read(rbio,
 551                                                       (unsigned char *)salt,
 552                                     sizeof salt) != sizeof salt) {
 553                                         BIO_printf(bio_err,"error reading input file\n");
 554                                         goto end;
 555                                 } else if(memcmp(mbuf,magic,sizeof magic-1)) {
 556                                     BIO_printf(bio_err,"bad magic number\n");
 557                                     goto end;
 558                                 }
 559
 560                                 sptr = salt;
 561                         }
 562
 563                         if (!EVP_BytesToKey(cipher,dgst,sptr,
 564                                             (unsigned char *)str,
 565                                             strlen(str),1,key,iv))
 566                                 {
 567                                 BIO_printf(bio_err, "EVP_BytesToKey failed\n");
 568                                 goto end;
 569                                 }
 570                         /* zero the complete buffer or the string
 571                          * passed from the command line
 572                          * bug picked up by
 573                          * Larry J. Hughes Jr. <hughes@indiana.edu> */
 574                         if (str == strbuf)
 575                                 OPENSSL_cleanse(str,SIZE);
 576                         else
 577                                 OPENSSL_cleanse(str,strlen(str));
 578                         }
 579                 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv))
 580                         {
 581                         BIO_printf(bio_err,"invalid hex iv value\n");
 582                         goto end;
 583                         }
 584                 if ((hiv == NULL) && (str == NULL)
 585                     && EVP_CIPHER_iv_length(cipher) != 0)
 586                         {
 587                         /* No IV was explicitly set and no IV was generated
 588                          * during EVP_BytesToKey. Hence the IV is undefined,
 589                          * making correct decryption impossible. */
 590                         BIO_printf(bio_err, "iv undefined\n");
 591                         goto end;
 592                         }
 593                 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key))
 594                         {
 595                         BIO_printf(bio_err,"invalid hex key value\n");
 596                         goto end;
 597                         }
 598
 599                 if ((benc=BIO_new(BIO_f_cipher())) == NULL)
 600                         goto end;
 601
 602                 /* Since we may be changing parameters work on the encryption
 603                  * context rather than calling BIO_set_cipher().
 604                  */
 605
 606                 BIO_get_cipher_ctx(benc, &ctx);
 607
 608                 if (non_fips_allow)
 609                         EVP_CIPHER_CTX_set_flags(ctx,
 610                                 EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 611
 612                 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc))
 613                         {
 614                         BIO_printf(bio_err, "Error setting cipher %s\n",
 615                                 EVP_CIPHER_name(cipher));
 616                         ERR_print_errors(bio_err);
 617                         goto end;
 618                         }
 619
 620                 if (nopad)
 621                         EVP_CIPHER_CTX_set_padding(ctx, 0);
 622
 623                 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc))
 624                         {
 625                         BIO_printf(bio_err, "Error setting cipher %s\n",
 626                                 EVP_CIPHER_name(cipher));
 627                         ERR_print_errors(bio_err);
 628                         goto end;
 629                         }
 630
 631                 if (debug)
 632                         {
 633                         BIO_set_callback(benc,BIO_debug_callback);
 634                         BIO_set_callback_arg(benc,(char *)bio_err);
 635                         }
 636
 637                 if (printkey)
 638                         {
 639                         if (!nosalt)
 640                                 {
 641                                 printf("salt=");
 642                                 for (i=0; i<(int)sizeof(salt); i++)
 643                                         printf("%02X",salt[i]);
 644                                 printf("\n");
 645                                 }
 646                         if (cipher->key_len > 0)
 647                                 {
 648                                 printf("key=");
 649                                 for (i=0; i<cipher->key_len; i++)
 650                                         printf("%02X",key[i]);
 651                                 printf("\n");
 652                                 }
 653                         if (cipher->iv_len > 0)
 654                                 {
 655                                 printf("iv =");
 656                                 for (i=0; i<cipher->iv_len; i++)
 657                                         printf("%02X",iv[i]);
 658                                 printf("\n");
 659                                 }
 660                         if (printkey == 2)
 661                                 {
 662                                 ret=0;
 663                                 goto end;
 664                                 }
 665                         }
 666                 }
 667
 668         /* Only encrypt/decrypt as we write the file */
 669         if (benc != NULL)
 670                 wbio=BIO_push(benc,wbio);
 671
 672         for (;;)
 673                 {
 674                 inl=BIO_read(rbio,(char *)buff,bsize);
 675                 if (inl <= 0) break;
 676                 if (BIO_write(wbio,(char *)buff,inl) != inl)
 677                         {
 678                         BIO_printf(bio_err,"error writing output file\n");
 679                         goto end;
 680                         }
 681                 }
 682         if (!BIO_flush(wbio))
 683                 {
 684                 BIO_printf(bio_err,"bad decrypt\n");
 685                 goto end;
 686                 }
 687
 688         ret=0;
 689         if (verbose)
 690                 {
 691                 BIO_printf(bio_err,"bytes read   :%8ld\n",BIO_number_read(in));
 692                 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
 693                 }
 694 end:
 695         ERR_print_errors(bio_err);
 696         if (strbuf != NULL) OPENSSL_free(strbuf);
 697         if (buff != NULL) OPENSSL_free(buff);
 698         if (in != NULL) BIO_free(in);
 699         if (out != NULL) BIO_free_all(out);
 700         if (benc != NULL) BIO_free(benc);
 701         if (b64 != NULL) BIO_free(b64);
 702 #ifdef ZLIB
 703         if (bzl != NULL) BIO_free(bzl);
 704 #endif
 705         if(pass) OPENSSL_free(pass);
 706         apps_shutdown();
 707         OPENSSL_EXIT(ret);
 708         }
 709
 710 int set_hex(char *in, unsigned char *out, int size)
 711         {
 712         int i,n;
 713         unsigned char j;
 714
 715         n=strlen(in);
 716         if (n > (size*2))
 717                 {
 718                 BIO_printf(bio_err,"hex string is too long\n");
 719                 return(0);
 720                 }
 721         memset(out,0,size);
 722         for (i=0; i<n; i++)
 723                 {
 724                 j=(unsigned char)*in;
 725                 *(in++)='\0';
 726                 if (j == 0) break;
 727                 if ((j >= '0') && (j <= '9'))
 728                         j-='0';
 729                 else if ((j >= 'A') && (j <= 'F'))
 730                         j=j-'A'+10;
 731                 else if ((j >= 'a') && (j <= 'f'))
 732                         j=j-'a'+10;
 733                 else
 734                         {
 735                         BIO_printf(bio_err,"non-hex digit\n");
 736                         return(0);
 737                         }
 738                 if (i&1)
 739                         out[i/2]|=j;
 740                 else
 741                         out[i/2]=(j<<4);
 742                 }
 743         return(1);
 744         }