enc.c revision 267258
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 73int 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 82static 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 100int MAIN(int, char **); 101 102int 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); 297bad: 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 EVP_BytesToKey(cipher,dgst,sptr, 562 (unsigned char *)str, 563 strlen(str),1,key,iv); 564 /* zero the complete buffer or the string 565 * passed from the command line 566 * bug picked up by 567 * Larry J. Hughes Jr. <hughes@indiana.edu> */ 568 if (str == strbuf) 569 OPENSSL_cleanse(str,SIZE); 570 else 571 OPENSSL_cleanse(str,strlen(str)); 572 } 573 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) 574 { 575 BIO_printf(bio_err,"invalid hex iv value\n"); 576 goto end; 577 } 578 if ((hiv == NULL) && (str == NULL) 579 && EVP_CIPHER_iv_length(cipher) != 0) 580 { 581 /* No IV was explicitly set and no IV was generated 582 * during EVP_BytesToKey. Hence the IV is undefined, 583 * making correct decryption impossible. */ 584 BIO_printf(bio_err, "iv undefined\n"); 585 goto end; 586 } 587 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) 588 { 589 BIO_printf(bio_err,"invalid hex key value\n"); 590 goto end; 591 } 592 593 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 594 goto end; 595 596 /* Since we may be changing parameters work on the encryption 597 * context rather than calling BIO_set_cipher(). 598 */ 599 600 BIO_get_cipher_ctx(benc, &ctx); 601 602 if (non_fips_allow) 603 EVP_CIPHER_CTX_set_flags(ctx, 604 EVP_CIPH_FLAG_NON_FIPS_ALLOW); 605 606 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) 607 { 608 BIO_printf(bio_err, "Error setting cipher %s\n", 609 EVP_CIPHER_name(cipher)); 610 ERR_print_errors(bio_err); 611 goto end; 612 } 613 614 if (nopad) 615 EVP_CIPHER_CTX_set_padding(ctx, 0); 616 617 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 618 { 619 BIO_printf(bio_err, "Error setting cipher %s\n", 620 EVP_CIPHER_name(cipher)); 621 ERR_print_errors(bio_err); 622 goto end; 623 } 624 625 if (debug) 626 { 627 BIO_set_callback(benc,BIO_debug_callback); 628 BIO_set_callback_arg(benc,(char *)bio_err); 629 } 630 631 if (printkey) 632 { 633 if (!nosalt) 634 { 635 printf("salt="); 636 for (i=0; i<(int)sizeof(salt); i++) 637 printf("%02X",salt[i]); 638 printf("\n"); 639 } 640 if (cipher->key_len > 0) 641 { 642 printf("key="); 643 for (i=0; i<cipher->key_len; i++) 644 printf("%02X",key[i]); 645 printf("\n"); 646 } 647 if (cipher->iv_len > 0) 648 { 649 printf("iv ="); 650 for (i=0; i<cipher->iv_len; i++) 651 printf("%02X",iv[i]); 652 printf("\n"); 653 } 654 if (printkey == 2) 655 { 656 ret=0; 657 goto end; 658 } 659 } 660 } 661 662 /* Only encrypt/decrypt as we write the file */ 663 if (benc != NULL) 664 wbio=BIO_push(benc,wbio); 665 666 for (;;) 667 { 668 inl=BIO_read(rbio,(char *)buff,bsize); 669 if (inl <= 0) break; 670 if (BIO_write(wbio,(char *)buff,inl) != inl) 671 { 672 BIO_printf(bio_err,"error writing output file\n"); 673 goto end; 674 } 675 } 676 if (!BIO_flush(wbio)) 677 { 678 BIO_printf(bio_err,"bad decrypt\n"); 679 goto end; 680 } 681 682 ret=0; 683 if (verbose) 684 { 685 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 686 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 687 } 688end: 689 ERR_print_errors(bio_err); 690 if (strbuf != NULL) OPENSSL_free(strbuf); 691 if (buff != NULL) OPENSSL_free(buff); 692 if (in != NULL) BIO_free(in); 693 if (out != NULL) BIO_free_all(out); 694 if (benc != NULL) BIO_free(benc); 695 if (b64 != NULL) BIO_free(b64); 696#ifdef ZLIB 697 if (bzl != NULL) BIO_free(bzl); 698#endif 699 if(pass) OPENSSL_free(pass); 700 apps_shutdown(); 701 OPENSSL_EXIT(ret); 702 } 703 704int set_hex(char *in, unsigned char *out, int size) 705 { 706 int i,n; 707 unsigned char j; 708 709 n=strlen(in); 710 if (n > (size*2)) 711 { 712 BIO_printf(bio_err,"hex string is too long\n"); 713 return(0); 714 } 715 memset(out,0,size); 716 for (i=0; i<n; i++) 717 { 718 j=(unsigned char)*in; 719 *(in++)='\0'; 720 if (j == 0) break; 721 if ((j >= '0') && (j <= '9')) 722 j-='0'; 723 else if ((j >= 'A') && (j <= 'F')) 724 j=j-'A'+10; 725 else if ((j >= 'a') && (j <= 'f')) 726 j=j-'a'+10; 727 else 728 { 729 BIO_printf(bio_err,"non-hex digit\n"); 730 return(0); 731 } 732 if (i&1) 733 out[i/2]|=j; 734 else 735 out[i/2]=(j<<4); 736 } 737 return(1); 738 } 739