release/src/router/openssl/apps/enc.c

   1 /* apps/enc.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include "apps.h"
  63 #include <openssl/bio.h>
  64 #include <openssl/err.h>
  65 #include <openssl/evp.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/rand.h>
  69 #include <openssl/pem.h>
  70 #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         BIO_printf(bio, "\n");
  95         n = 0;
  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 =
 126         NULL, *wbio = NULL;
 127 #define PROG_NAME_SIZE  39
 128     char pname[PROG_NAME_SIZE + 1];
 129 #ifndef OPENSSL_NO_ENGINE
 130     char *engine = NULL;
 131 #endif
 132     const EVP_MD *dgst = NULL;
 133     int non_fips_allow = 0;
 134
 135     apps_startup();
 136
 137     if (bio_err == NULL)
 138         if ((bio_err = BIO_new(BIO_s_file())) != NULL)
 139             BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
 140
 141     if (!load_config(bio_err, NULL))
 142         goto end;
 143
 144     /* first check the program name */
 145     program_name(argv[0], pname, sizeof pname);
 146     if (strcmp(pname, "base64") == 0)
 147         base64 = 1;
 148 #ifdef ZLIB
 149     if (strcmp(pname, "zlib") == 0)
 150         do_zlib = 1;
 151 #endif
 152
 153     cipher = EVP_get_cipherbyname(pname);
 154 #ifdef ZLIB
 155     if (!do_zlib && !base64 && (cipher == NULL)
 156         && (strcmp(pname, "enc") != 0))
 157 #else
 158     if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0))
 159 #endif
 160     {
 161         BIO_printf(bio_err, "%s is an unknown cipher\n", pname);
 162         goto bad;
 163     }
 164
 165     argc--;
 166     argv++;
 167     while (argc >= 1) {
 168         if (strcmp(*argv, "-e") == 0)
 169             enc = 1;
 170         else if (strcmp(*argv, "-in") == 0) {
 171             if (--argc < 1)
 172                 goto bad;
 173             inf = *(++argv);
 174         } else if (strcmp(*argv, "-out") == 0) {
 175             if (--argc < 1)
 176                 goto bad;
 177             outf = *(++argv);
 178         } else if (strcmp(*argv, "-pass") == 0) {
 179             if (--argc < 1)
 180                 goto bad;
 181             passarg = *(++argv);
 182         }
 183 #ifndef OPENSSL_NO_ENGINE
 184         else if (strcmp(*argv, "-engine") == 0) {
 185             if (--argc < 1)
 186                 goto bad;
 187             engine = *(++argv);
 188         }
 189 #endif
 190         else if (strcmp(*argv, "-d") == 0)
 191             enc = 0;
 192         else if (strcmp(*argv, "-p") == 0)
 193             printkey = 1;
 194         else if (strcmp(*argv, "-v") == 0)
 195             verbose = 1;
 196         else if (strcmp(*argv, "-nopad") == 0)
 197             nopad = 1;
 198         else if (strcmp(*argv, "-salt") == 0)
 199             nosalt = 0;
 200         else if (strcmp(*argv, "-nosalt") == 0)
 201             nosalt = 1;
 202         else if (strcmp(*argv, "-debug") == 0)
 203             debug = 1;
 204         else if (strcmp(*argv, "-P") == 0)
 205             printkey = 2;
 206         else if (strcmp(*argv, "-A") == 0)
 207             olb64 = 1;
 208         else if (strcmp(*argv, "-a") == 0)
 209             base64 = 1;
 210         else if (strcmp(*argv, "-base64") == 0)
 211             base64 = 1;
 212 #ifdef ZLIB
 213         else if (strcmp(*argv, "-z") == 0)
 214             do_zlib = 1;
 215 #endif
 216         else if (strcmp(*argv, "-bufsize") == 0) {
 217             if (--argc < 1)
 218                 goto bad;
 219             bufsize = (unsigned char *)*(++argv);
 220         } else if (strcmp(*argv, "-k") == 0) {
 221             if (--argc < 1)
 222                 goto bad;
 223             str = *(++argv);
 224         } else if (strcmp(*argv, "-kfile") == 0) {
 225             static char buf[128];
 226             FILE *infile;
 227             char *file;
 228
 229             if (--argc < 1)
 230                 goto bad;
 231             file = *(++argv);
 232             infile = fopen(file, "r");
 233             if (infile == NULL) {
 234                 BIO_printf(bio_err, "unable to read key from '%s'\n", file);
 235                 goto bad;
 236             }
 237             buf[0] = '\0';
 238             if (!fgets(buf, sizeof buf, infile)) {
 239                 BIO_printf(bio_err, "unable to read key from '%s'\n", file);
 240                 goto bad;
 241             }
 242             fclose(infile);
 243             i = strlen(buf);
 244             if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
 245                 buf[--i] = '\0';
 246             if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
 247                 buf[--i] = '\0';
 248             if (i < 1) {
 249                 BIO_printf(bio_err, "zero length password\n");
 250                 goto bad;
 251             }
 252             str = buf;
 253         } else if (strcmp(*argv, "-K") == 0) {
 254             if (--argc < 1)
 255                 goto bad;
 256             hkey = *(++argv);
 257         } else if (strcmp(*argv, "-S") == 0) {
 258             if (--argc < 1)
 259                 goto bad;
 260             hsalt = *(++argv);
 261         } else if (strcmp(*argv, "-iv") == 0) {
 262             if (--argc < 1)
 263                 goto bad;
 264             hiv = *(++argv);
 265         } else if (strcmp(*argv, "-md") == 0) {
 266             if (--argc < 1)
 267                 goto bad;
 268             md = *(++argv);
 269         } else if (strcmp(*argv, "-non-fips-allow") == 0)
 270             non_fips_allow = 1;
 271         else if ((argv[0][0] == '-') &&
 272                  ((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) {
 273             cipher = c;
 274         } else if (strcmp(*argv, "-none") == 0)
 275             cipher = NULL;
 276         else {
 277             BIO_printf(bio_err, "unknown option '%s'\n", *argv);
 278  bad:
 279             BIO_printf(bio_err, "options are\n");
 280             BIO_printf(bio_err, "%-14s input file\n", "-in <file>");
 281             BIO_printf(bio_err, "%-14s output file\n", "-out <file>");
 282             BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>");
 283             BIO_printf(bio_err, "%-14s encrypt\n", "-e");
 284             BIO_printf(bio_err, "%-14s decrypt\n", "-d");
 285             BIO_printf(bio_err,
 286                        "%-14s base64 encode/decode, depending on encryption flag\n",
 287                        "-a/-base64");
 288             BIO_printf(bio_err, "%-14s passphrase is the next argument\n",
 289                        "-k");
 290             BIO_printf(bio_err,
 291                        "%-14s passphrase is the first line of the file argument\n",
 292                        "-kfile");
 293             BIO_printf(bio_err,
 294                        "%-14s the next argument is the md to use to create a key\n",
 295                        "-md");
 296             BIO_printf(bio_err,
 297                        "%-14s   from a passphrase.  One of md2, md5, sha or sha1\n",
 298                        "");
 299             BIO_printf(bio_err, "%-14s salt in hex is the next argument\n",
 300                        "-S");
 301             BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n",
 302                        "-K/-iv");
 303             BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n",
 304                        "-[pP]");
 305             BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>");
 306             BIO_printf(bio_err, "%-14s disable standard block padding\n",
 307                        "-nopad");
 308 #ifndef OPENSSL_NO_ENGINE
 309             BIO_printf(bio_err,
 310                        "%-14s use engine e, possibly a hardware device.\n",
 311                        "-engine e");
 312 #endif
 313
 314             BIO_printf(bio_err, "Cipher Types\n");
 315             OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
 316                                    show_ciphers, bio_err);
 317             BIO_printf(bio_err, "\n");
 318
 319             goto end;
 320         }
 321         argc--;
 322         argv++;
 323     }
 324
 325 #ifndef OPENSSL_NO_ENGINE
 326     setup_engine(bio_err, engine, 0);
 327 #endif
 328
 329     if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) {
 330         BIO_printf(bio_err,
 331                    "AEAD ciphers not supported by the enc utility\n");
 332         goto end;
 333     }
 334
 335     if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) {
 336         BIO_printf(bio_err,
 337                    "Ciphers in XTS mode are not supported by the enc utility\n");
 338         goto end;
 339     }
 340
 341     if (md && (dgst = EVP_get_digestbyname(md)) == NULL) {
 342         BIO_printf(bio_err, "%s is an unsupported message digest type\n", md);
 343         goto end;
 344     }
 345
 346     if (dgst == NULL) {
 347         dgst = EVP_md5();
 348     }
 349
 350     if (bufsize != NULL) {
 351         unsigned long n;
 352
 353         for (n = 0; *bufsize; bufsize++) {
 354             i = *bufsize;
 355             if ((i <= '9') && (i >= '0'))
 356                 n = n * 10 + i - '0';
 357             else if (i == 'k') {
 358                 n *= 1024;
 359                 bufsize++;
 360                 break;
 361             }
 362         }
 363         if (*bufsize != '\0') {
 364             BIO_printf(bio_err, "invalid 'bufsize' specified.\n");
 365             goto end;
 366         }
 367
 368         /* It must be large enough for a base64 encoded line */
 369         if (base64 && n < 80)
 370             n = 80;
 371
 372         bsize = (int)n;
 373         if (verbose)
 374             BIO_printf(bio_err, "bufsize=%d\n", bsize);
 375     }
 376
 377     strbuf = OPENSSL_malloc(SIZE);
 378     buff = (unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
 379     if ((buff == NULL) || (strbuf == NULL)) {
 380         BIO_printf(bio_err, "OPENSSL_malloc failure %ld\n",
 381                    (long)EVP_ENCODE_LENGTH(bsize));
 382         goto end;
 383     }
 384
 385     in = BIO_new(BIO_s_file());
 386     out = BIO_new(BIO_s_file());
 387     if ((in == NULL) || (out == NULL)) {
 388         ERR_print_errors(bio_err);
 389         goto end;
 390     }
 391     if (debug) {
 392         BIO_set_callback(in, BIO_debug_callback);
 393         BIO_set_callback(out, BIO_debug_callback);
 394         BIO_set_callback_arg(in, (char *)bio_err);
 395         BIO_set_callback_arg(out, (char *)bio_err);
 396     }
 397
 398     if (inf == NULL) {
 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     } else {
 405         if (BIO_read_filename(in, inf) <= 0) {
 406             perror(inf);
 407             goto end;
 408         }
 409     }
 410
 411     if (!str && passarg) {
 412         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
 413             BIO_printf(bio_err, "Error getting password\n");
 414             goto end;
 415         }
 416         str = pass;
 417     }
 418
 419     if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
 420         for (;;) {
 421             char buf[200];
 422
 423             BIO_snprintf(buf, sizeof buf, "enter %s %s password:",
 424                          OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
 425                          (enc) ? "encryption" : "decryption");
 426             strbuf[0] = '\0';
 427             i = EVP_read_pw_string((char *)strbuf, SIZE, buf, enc);
 428             if (i == 0) {
 429                 if (strbuf[0] == '\0') {
 430                     ret = 1;
 431                     goto end;
 432                 }
 433                 str = strbuf;
 434                 break;
 435             }
 436             if (i < 0) {
 437                 BIO_printf(bio_err, "bad password read\n");
 438                 goto end;
 439             }
 440         }
 441     }
 442
 443     if (outf == NULL) {
 444         BIO_set_fp(out, stdout, BIO_NOCLOSE);
 445 #ifndef OPENSSL_NO_SETVBUF_IONBF
 446         if (bufsize != NULL)
 447             setvbuf(stdout, (char *)NULL, _IONBF, 0);
 448 #endif                          /* ndef OPENSSL_NO_SETVBUF_IONBF */
 449 #ifdef OPENSSL_SYS_VMS
 450         {
 451             BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 452             out = BIO_push(tmpbio, out);
 453         }
 454 #endif
 455     } else {
 456         if (BIO_write_filename(out, outf) <= 0) {
 457             perror(outf);
 458             goto end;
 459         }
 460     }
 461
 462     rbio = in;
 463     wbio = out;
 464
 465 #ifdef ZLIB
 466
 467     if (do_zlib) {
 468         if ((bzl = BIO_new(BIO_f_zlib())) == NULL)
 469             goto end;
 470         if (enc)
 471             wbio = BIO_push(bzl, wbio);
 472         else
 473             rbio = BIO_push(bzl, rbio);
 474     }
 475 #endif
 476
 477     if (base64) {
 478         if ((b64 = BIO_new(BIO_f_base64())) == NULL)
 479             goto end;
 480         if (debug) {
 481             BIO_set_callback(b64, BIO_debug_callback);
 482             BIO_set_callback_arg(b64, (char *)bio_err);
 483         }
 484         if (olb64)
 485             BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
 486         if (enc)
 487             wbio = BIO_push(b64, wbio);
 488         else
 489             rbio = BIO_push(b64, rbio);
 490     }
 491
 492     if (cipher != NULL) {
 493         /*
 494          * Note that str is NULL if a key was passed on the command line, so
 495          * we get no salt in that case. Is this a bug?
 496          */
 497         if (str != NULL) {
 498             /*
 499              * Salt handling: if encrypting generate a salt and write to
 500              * output BIO. If decrypting read salt from input BIO.
 501              */
 502             unsigned char *sptr;
 503             if (nosalt)
 504                 sptr = NULL;
 505             else {
 506                 if (enc) {
 507                     if (hsalt) {
 508                         if (!set_hex(hsalt, salt, sizeof salt)) {
 509                             BIO_printf(bio_err, "invalid hex salt value\n");
 510                             goto end;
 511                         }
 512                     } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
 513                         goto end;
 514                     /*
 515                      * If -P option then don't bother writing
 516                      */
 517                     if ((printkey != 2)
 518                         && (BIO_write(wbio, magic,
 519                                       sizeof magic - 1) != sizeof magic - 1
 520                             || BIO_write(wbio,
 521                                          (char *)salt,
 522                                          sizeof salt) != sizeof salt)) {
 523                         BIO_printf(bio_err, "error writing output file\n");
 524                         goto end;
 525                     }
 526                 } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf
 527                            || BIO_read(rbio,
 528                                        (unsigned char *)salt,
 529                                        sizeof salt) != sizeof salt) {
 530                     BIO_printf(bio_err, "error reading input file\n");
 531                     goto end;
 532                 } else if (memcmp(mbuf, magic, sizeof magic - 1)) {
 533                     BIO_printf(bio_err, "bad magic number\n");
 534                     goto end;
 535                 }
 536
 537                 sptr = salt;
 538             }
 539
 540             EVP_BytesToKey(cipher, dgst, sptr,
 541                            (unsigned char *)str, strlen(str), 1, key, iv);
 542             /*
 543              * zero the complete buffer or the string passed from the command
 544              * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu>
 545              */
 546             if (str == strbuf)
 547                 OPENSSL_cleanse(str, SIZE);
 548             else
 549                 OPENSSL_cleanse(str, strlen(str));
 550         }
 551         if (hiv != NULL) {
 552             int siz = EVP_CIPHER_iv_length(cipher);
 553             if (siz == 0) {
 554                 BIO_printf(bio_err, "warning: iv not use by this cipher\n");
 555             } else if (!set_hex(hiv, iv, sizeof iv)) {
 556                 BIO_printf(bio_err, "invalid hex iv value\n");
 557                 goto end;
 558             }
 559         }
 560         if ((hiv == NULL) && (str == NULL)
 561             && EVP_CIPHER_iv_length(cipher) != 0) {
 562             /*
 563              * No IV was explicitly set and no IV was generated during
 564              * EVP_BytesToKey. Hence the IV is undefined, making correct
 565              * decryption impossible.
 566              */
 567             BIO_printf(bio_err, "iv undefined\n");
 568             goto end;
 569         }
 570         if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) {
 571             BIO_printf(bio_err, "invalid hex key value\n");
 572             goto end;
 573         }
 574
 575         if ((benc = BIO_new(BIO_f_cipher())) == NULL)
 576             goto end;
 577
 578         /*
 579          * Since we may be changing parameters work on the encryption context
 580          * rather than calling BIO_set_cipher().
 581          */
 582
 583         BIO_get_cipher_ctx(benc, &ctx);
 584
 585         if (non_fips_allow)
 586             EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW);
 587
 588         if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
 589             BIO_printf(bio_err, "Error setting cipher %s\n",
 590                        EVP_CIPHER_name(cipher));
 591             ERR_print_errors(bio_err);
 592             goto end;
 593         }
 594
 595         if (nopad)
 596             EVP_CIPHER_CTX_set_padding(ctx, 0);
 597
 598         if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
 599             BIO_printf(bio_err, "Error setting cipher %s\n",
 600                        EVP_CIPHER_name(cipher));
 601             ERR_print_errors(bio_err);
 602             goto end;
 603         }
 604
 605         if (debug) {
 606             BIO_set_callback(benc, BIO_debug_callback);
 607             BIO_set_callback_arg(benc, (char *)bio_err);
 608         }
 609
 610         if (printkey) {
 611             if (!nosalt) {
 612                 printf("salt=");
 613                 for (i = 0; i < (int)sizeof(salt); i++)
 614                     printf("%02X", salt[i]);
 615                 printf("\n");
 616             }
 617             if (cipher->key_len > 0) {
 618                 printf("key=");
 619                 for (i = 0; i < cipher->key_len; i++)
 620                     printf("%02X", key[i]);
 621                 printf("\n");
 622             }
 623             if (cipher->iv_len > 0) {
 624                 printf("iv =");
 625                 for (i = 0; i < cipher->iv_len; i++)
 626                     printf("%02X", iv[i]);
 627                 printf("\n");
 628             }
 629             if (printkey == 2) {
 630                 ret = 0;
 631                 goto end;
 632             }
 633         }
 634     }
 635
 636     /* Only encrypt/decrypt as we write the file */
 637     if (benc != NULL)
 638         wbio = BIO_push(benc, wbio);
 639
 640     for (;;) {
 641         inl = BIO_read(rbio, (char *)buff, bsize);
 642         if (inl <= 0)
 643             break;
 644         if (BIO_write(wbio, (char *)buff, inl) != inl) {
 645             BIO_printf(bio_err, "error writing output file\n");
 646             goto end;
 647         }
 648     }
 649     if (!BIO_flush(wbio)) {
 650         BIO_printf(bio_err, "bad decrypt\n");
 651         goto end;
 652     }
 653
 654     ret = 0;
 655     if (verbose) {
 656         BIO_printf(bio_err, "bytes read   :%8ld\n", BIO_number_read(in));
 657         BIO_printf(bio_err, "bytes written:%8ld\n", BIO_number_written(out));
 658     }
 659  end:
 660     ERR_print_errors(bio_err);
 661     if (strbuf != NULL)
 662         OPENSSL_free(strbuf);
 663     if (buff != NULL)
 664         OPENSSL_free(buff);
 665     if (in != NULL)
 666         BIO_free(in);
 667     if (out != NULL)
 668         BIO_free_all(out);
 669     if (benc != NULL)
 670         BIO_free(benc);
 671     if (b64 != NULL)
 672         BIO_free(b64);
 673 #ifdef ZLIB
 674     if (bzl != NULL)
 675         BIO_free(bzl);
 676 #endif
 677     if (pass)
 678         OPENSSL_free(pass);
 679     apps_shutdown();
 680     OPENSSL_EXIT(ret);
 681 }
 682
 683 int set_hex(char *in, unsigned char *out, int size)
 684 {
 685     int i, n;
 686     unsigned char j;
 687
 688     n = strlen(in);
 689     if (n > (size * 2)) {
 690         BIO_printf(bio_err, "hex string is too long\n");
 691         return (0);
 692     }
 693     memset(out, 0, size);
 694     for (i = 0; i < n; i++) {
 695         j = (unsigned char)*in;
 696         *(in++) = '\0';
 697         if (j == 0)
 698             break;
 699         if ((j >= '0') && (j <= '9'))
 700             j -= '0';
 701         else if ((j >= 'A') && (j <= 'F'))
 702             j = j - 'A' + 10;
 703         else if ((j >= 'a') && (j <= 'f'))
 704             j = j - 'a' + 10;
 705         else {
 706             BIO_printf(bio_err, "non-hex digit\n");
 707             return (0);
 708         }
 709         if (i & 1)
 710             out[i / 2] |= j;
 711         else
 712             out[i / 2] = (j << 4);
 713     }
 714     return (1);
 715 }