1 /* apps/enc.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include "apps.h" 63 #include <openssl/bio.h> 64 #include <openssl/err.h> 65 #include <openssl/evp.h> 66 #include <openssl/objects.h> 67 #include <openssl/x509.h> 68 #include <openssl/rand.h> 69 #include <openssl/pem.h> 70 #include <openssl/comp.h> 71 #include <ctype.h> 72 73 int set_hex(char *in,unsigned char *out,int size); 74 #undef SIZE 75 #undef BSIZE 76 #undef PROG 77 78 #define SIZE (512) 79 #define BSIZE (8*1024) 80 #define PROG enc_main 81 82 static void show_ciphers(const OBJ_NAME *name,void *bio_) 83 { 84 BIO *bio=bio_; 85 static int n; 86 87 if(!islower((unsigned char)*name->name)) 88 return; 89 90 BIO_printf(bio,"-%-25s",name->name); 91 if(++n == 3) 92 { 93 BIO_printf(bio,"\n"); 94 n=0; 95 } 96 else 97 BIO_printf(bio," "); 98 } 99 100 int MAIN(int, char **); 101 102 int MAIN(int argc, char **argv) 103 { 104 static const char magic[]="Salted__"; 105 char mbuf[sizeof magic-1]; 106 char *strbuf=NULL; 107 unsigned char *buff=NULL,*bufsize=NULL; 108 int bsize=BSIZE,verbose=0; 109 int ret=1,inl; 110 int nopad = 0; 111 unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH]; 112 unsigned char salt[PKCS5_SALT_LEN]; 113 char *str=NULL, *passarg = NULL, *pass = NULL; 114 char *hkey=NULL,*hiv=NULL,*hsalt = NULL; 115 char *md=NULL; 116 int enc=1,printkey=0,i,base64=0; 117 #ifdef ZLIB 118 int do_zlib=0; 119 BIO *bzl = NULL; 120 #endif 121 int debug=0,olb64=0,nosalt=0; 122 const EVP_CIPHER *cipher=NULL,*c; 123 EVP_CIPHER_CTX *ctx = NULL; 124 char *inf=NULL,*outf=NULL; 125 BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL; 126 #define PROG_NAME_SIZE 39 127 char pname[PROG_NAME_SIZE+1]; 128 #ifndef OPENSSL_NO_ENGINE 129 char *engine = NULL; 130 #endif 131 const EVP_MD *dgst=NULL; 132 int non_fips_allow = 0; 133 134 apps_startup(); 135 136 if (bio_err == NULL) 137 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 138 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 139 140 if (!load_config(bio_err, NULL)) 141 goto end; 142 143 /* first check the program name */ 144 program_name(argv[0],pname,sizeof pname); 145 if (strcmp(pname,"base64") == 0) 146 base64=1; 147 #ifdef ZLIB 148 if (strcmp(pname,"zlib") == 0) 149 do_zlib=1; 150 #endif 151 152 cipher=EVP_get_cipherbyname(pname); 153 #ifdef ZLIB 154 if (!do_zlib && !base64 && (cipher == NULL) 155 && (strcmp(pname,"enc") != 0)) 156 #else 157 if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0)) 158 #endif 159 { 160 BIO_printf(bio_err,"%s is an unknown cipher\n",pname); 161 goto bad; 162 } 163 164 argc--; 165 argv++; 166 while (argc >= 1) 167 { 168 if (strcmp(*argv,"-e") == 0) 169 enc=1; 170 else if (strcmp(*argv,"-in") == 0) 171 { 172 if (--argc < 1) goto bad; 173 inf= *(++argv); 174 } 175 else if (strcmp(*argv,"-out") == 0) 176 { 177 if (--argc < 1) goto bad; 178 outf= *(++argv); 179 } 180 else if (strcmp(*argv,"-pass") == 0) 181 { 182 if (--argc < 1) goto bad; 183 passarg= *(++argv); 184 } 185 #ifndef OPENSSL_NO_ENGINE 186 else if (strcmp(*argv,"-engine") == 0) 187 { 188 if (--argc < 1) goto bad; 189 engine= *(++argv); 190 } 191 #endif 192 else if (strcmp(*argv,"-d") == 0) 193 enc=0; 194 else if (strcmp(*argv,"-p") == 0) 195 printkey=1; 196 else if (strcmp(*argv,"-v") == 0) 197 verbose=1; 198 else if (strcmp(*argv,"-nopad") == 0) 199 nopad=1; 200 else if (strcmp(*argv,"-salt") == 0) 201 nosalt=0; 202 else if (strcmp(*argv,"-nosalt") == 0) 203 nosalt=1; 204 else if (strcmp(*argv,"-debug") == 0) 205 debug=1; 206 else if (strcmp(*argv,"-P") == 0) 207 printkey=2; 208 else if (strcmp(*argv,"-A") == 0) 209 olb64=1; 210 else if (strcmp(*argv,"-a") == 0) 211 base64=1; 212 else if (strcmp(*argv,"-base64") == 0) 213 base64=1; 214 #ifdef ZLIB 215 else if (strcmp(*argv,"-z") == 0) 216 do_zlib=1; 217 #endif 218 else if (strcmp(*argv,"-bufsize") == 0) 219 { 220 if (--argc < 1) goto bad; 221 bufsize=(unsigned char *)*(++argv); 222 } 223 else if (strcmp(*argv,"-k") == 0) 224 { 225 if (--argc < 1) goto bad; 226 str= *(++argv); 227 } 228 else if (strcmp(*argv,"-kfile") == 0) 229 { 230 static char buf[128]; 231 FILE *infile; 232 char *file; 233 234 if (--argc < 1) goto bad; 235 file= *(++argv); 236 infile=fopen(file,"r"); 237 if (infile == NULL) 238 { 239 BIO_printf(bio_err,"unable to read key from '%s'\n", 240 file); 241 goto bad; 242 } 243 buf[0]='\0'; 244 if (!fgets(buf,sizeof buf,infile)) 245 { 246 BIO_printf(bio_err,"unable to read key from '%s'\n", 247 file); 248 goto bad; 249 } 250 fclose(infile); 251 i=strlen(buf); 252 if ((i > 0) && 253 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 254 buf[--i]='\0'; 255 if ((i > 0) && 256 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 257 buf[--i]='\0'; 258 if (i < 1) 259 { 260 BIO_printf(bio_err,"zero length password\n"); 261 goto bad; 262 } 263 str=buf; 264 } 265 else if (strcmp(*argv,"-K") == 0) 266 { 267 if (--argc < 1) goto bad; 268 hkey= *(++argv); 269 } 270 else if (strcmp(*argv,"-S") == 0) 271 { 272 if (--argc < 1) goto bad; 273 hsalt= *(++argv); 274 } 275 else if (strcmp(*argv,"-iv") == 0) 276 { 277 if (--argc < 1) goto bad; 278 hiv= *(++argv); 279 } 280 else if (strcmp(*argv,"-md") == 0) 281 { 282 if (--argc < 1) goto bad; 283 md= *(++argv); 284 } 285 else if (strcmp(*argv,"-non-fips-allow") == 0) 286 non_fips_allow = 1; 287 else if ((argv[0][0] == '-') && 288 ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) 289 { 290 cipher=c; 291 } 292 else if (strcmp(*argv,"-none") == 0) 293 cipher=NULL; 294 else 295 { 296 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 297 bad: 298 BIO_printf(bio_err,"options are\n"); 299 BIO_printf(bio_err,"%-14s input file\n","-in <file>"); 300 BIO_printf(bio_err,"%-14s output file\n","-out <file>"); 301 BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>"); 302 BIO_printf(bio_err,"%-14s encrypt\n","-e"); 303 BIO_printf(bio_err,"%-14s decrypt\n","-d"); 304 BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); 305 BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k"); 306 BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile"); 307 BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md"); 308 BIO_printf(bio_err,"%-14s from a passphrase. One of md2, md5, sha or sha1\n",""); 309 BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S"); 310 BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); 311 BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); 312 BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); 313 BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad"); 314 #ifndef OPENSSL_NO_ENGINE 315 BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e"); 316 #endif 317 318 BIO_printf(bio_err,"Cipher Types\n"); 319 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, 320 show_ciphers, 321 bio_err); 322 BIO_printf(bio_err,"\n"); 323 324 goto end; 325 } 326 argc--; 327 argv++; 328 } 329 330 #ifndef OPENSSL_NO_ENGINE 331 setup_engine(bio_err, engine, 0); 332 #endif 333 334 if (md && (dgst=EVP_get_digestbyname(md)) == NULL) 335 { 336 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md); 337 goto end; 338 } 339 340 if (dgst == NULL) 341 { 342 dgst = EVP_md5(); 343 } 344 345 if (bufsize != NULL) 346 { 347 unsigned long n; 348 349 for (n=0; *bufsize; bufsize++) 350 { 351 i= *bufsize; 352 if ((i <= '9') && (i >= '0')) 353 n=n*10+i-'0'; 354 else if (i == 'k') 355 { 356 n*=1024; 357 bufsize++; 358 break; 359 } 360 } 361 if (*bufsize != '\0') 362 { 363 BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); 364 goto end; 365 } 366 367 /* It must be large enough for a base64 encoded line */ 368 if (base64 && n < 80) n=80; 369 370 bsize=(int)n; 371 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); 372 } 373 374 strbuf=OPENSSL_malloc(SIZE); 375 buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); 376 if ((buff == NULL) || (strbuf == NULL)) 377 { 378 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); 379 goto end; 380 } 381 382 in=BIO_new(BIO_s_file()); 383 out=BIO_new(BIO_s_file()); 384 if ((in == NULL) || (out == NULL)) 385 { 386 ERR_print_errors(bio_err); 387 goto end; 388 } 389 if (debug) 390 { 391 BIO_set_callback(in,BIO_debug_callback); 392 BIO_set_callback(out,BIO_debug_callback); 393 BIO_set_callback_arg(in,(char *)bio_err); 394 BIO_set_callback_arg(out,(char *)bio_err); 395 } 396 397 if (inf == NULL) 398 { 399 #ifndef OPENSSL_NO_SETVBUF_IONBF 400 if (bufsize != NULL) 401 setvbuf(stdin, (char *)NULL, _IONBF, 0); 402 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ 403 BIO_set_fp(in,stdin,BIO_NOCLOSE); 404 } 405 else 406 { 407 if (BIO_read_filename(in,inf) <= 0) 408 { 409 perror(inf); 410 goto end; 411 } 412 } 413 414 if(!str && passarg) { 415 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { 416 BIO_printf(bio_err, "Error getting password\n"); 417 goto end; 418 } 419 str = pass; 420 } 421 422 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) 423 { 424 for (;;) 425 { 426 char buf[200]; 427 428 BIO_snprintf(buf,sizeof buf,"enter %s %s password:", 429 OBJ_nid2ln(EVP_CIPHER_nid(cipher)), 430 (enc)?"encryption":"decryption"); 431 strbuf[0]='\0'; 432 i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); 433 if (i == 0) 434 { 435 if (strbuf[0] == '\0') 436 { 437 ret=1; 438 goto end; 439 } 440 str=strbuf; 441 break; 442 } 443 if (i < 0) 444 { 445 BIO_printf(bio_err,"bad password read\n"); 446 goto end; 447 } 448 } 449 } 450 451 452 if (outf == NULL) 453 { 454 BIO_set_fp(out,stdout,BIO_NOCLOSE); 455 #ifndef OPENSSL_NO_SETVBUF_IONBF 456 if (bufsize != NULL) 457 setvbuf(stdout, (char *)NULL, _IONBF, 0); 458 #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ 459 #ifdef OPENSSL_SYS_VMS 460 { 461 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 462 out = BIO_push(tmpbio, out); 463 } 464 #endif 465 } 466 else 467 { 468 if (BIO_write_filename(out,outf) <= 0) 469 { 470 perror(outf); 471 goto end; 472 } 473 } 474 475 rbio=in; 476 wbio=out; 477 478 #ifdef ZLIB 479 480 if (do_zlib) 481 { 482 if ((bzl=BIO_new(BIO_f_zlib())) == NULL) 483 goto end; 484 if (enc) 485 wbio=BIO_push(bzl,wbio); 486 else 487 rbio=BIO_push(bzl,rbio); 488 } 489 #endif 490 491 if (base64) 492 { 493 if ((b64=BIO_new(BIO_f_base64())) == NULL) 494 goto end; 495 if (debug) 496 { 497 BIO_set_callback(b64,BIO_debug_callback); 498 BIO_set_callback_arg(b64,(char *)bio_err); 499 } 500 if (olb64) 501 BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); 502 if (enc) 503 wbio=BIO_push(b64,wbio); 504 else 505 rbio=BIO_push(b64,rbio); 506 } 507 508 if (cipher != NULL) 509 { 510 /* Note that str is NULL if a key was passed on the command 511 * line, so we get no salt in that case. Is this a bug? 512 */ 513 if (str != NULL) 514 { 515 /* Salt handling: if encrypting generate a salt and 516 * write to output BIO. If decrypting read salt from 517 * input BIO. 518 */ 519 unsigned char *sptr; 520 if(nosalt) sptr = NULL; 521 else { 522 if(enc) { 523 if(hsalt) { 524 if(!set_hex(hsalt,salt,sizeof salt)) { 525 BIO_printf(bio_err, 526 "invalid hex salt value\n"); 527 goto end; 528 } 529 } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0) 530 goto end; 531 /* If -P option then don't bother writing */ 532 if((printkey != 2) 533 && (BIO_write(wbio,magic, 534 sizeof magic-1) != sizeof magic-1 535 || BIO_write(wbio, 536 (char *)salt, 537 sizeof salt) != sizeof salt)) { 538 BIO_printf(bio_err,"error writing output file\n"); 539 goto end; 540 } 541 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf 542 || BIO_read(rbio, 543 (unsigned char *)salt, 544 sizeof salt) != sizeof salt) { 545 BIO_printf(bio_err,"error reading input file\n"); 546 goto end; 547 } else if(memcmp(mbuf,magic,sizeof magic-1)) { 548 BIO_printf(bio_err,"bad magic number\n"); 549 goto end; 550 } 551 552 sptr = salt; 553 } 554 555 EVP_BytesToKey(cipher,dgst,sptr, 556 (unsigned char *)str, 557 strlen(str),1,key,iv); 558 /* zero the complete buffer or the string 559 * passed from the command line 560 * bug picked up by 561 * Larry J. Hughes Jr. <hughes (at) indiana.edu> */ 562 if (str == strbuf) 563 OPENSSL_cleanse(str,SIZE); 564 else 565 OPENSSL_cleanse(str,strlen(str)); 566 } 567 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) 568 { 569 BIO_printf(bio_err,"invalid hex iv value\n"); 570 goto end; 571 } 572 if ((hiv == NULL) && (str == NULL) 573 && EVP_CIPHER_iv_length(cipher) != 0) 574 { 575 /* No IV was explicitly set and no IV was generated 576 * during EVP_BytesToKey. Hence the IV is undefined, 577 * making correct decryption impossible. */ 578 BIO_printf(bio_err, "iv undefined\n"); 579 goto end; 580 } 581 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) 582 { 583 BIO_printf(bio_err,"invalid hex key value\n"); 584 goto end; 585 } 586 587 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 588 goto end; 589 590 /* Since we may be changing parameters work on the encryption 591 * context rather than calling BIO_set_cipher(). 592 */ 593 594 BIO_get_cipher_ctx(benc, &ctx); 595 596 if (non_fips_allow) 597 EVP_CIPHER_CTX_set_flags(ctx, 598 EVP_CIPH_FLAG_NON_FIPS_ALLOW); 599 600 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) 601 { 602 BIO_printf(bio_err, "Error setting cipher %s\n", 603 EVP_CIPHER_name(cipher)); 604 ERR_print_errors(bio_err); 605 goto end; 606 } 607 608 if (nopad) 609 EVP_CIPHER_CTX_set_padding(ctx, 0); 610 611 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 612 { 613 BIO_printf(bio_err, "Error setting cipher %s\n", 614 EVP_CIPHER_name(cipher)); 615 ERR_print_errors(bio_err); 616 goto end; 617 } 618 619 if (debug) 620 { 621 BIO_set_callback(benc,BIO_debug_callback); 622 BIO_set_callback_arg(benc,(char *)bio_err); 623 } 624 625 if (printkey) 626 { 627 if (!nosalt) 628 { 629 printf("salt="); 630 for (i=0; i<(int)sizeof(salt); i++) 631 printf("%02X",salt[i]); 632 printf("\n"); 633 } 634 if (cipher->key_len > 0) 635 { 636 printf("key="); 637 for (i=0; i<cipher->key_len; i++) 638 printf("%02X",key[i]); 639 printf("\n"); 640 } 641 if (cipher->iv_len > 0) 642 { 643 printf("iv ="); 644 for (i=0; i<cipher->iv_len; i++) 645 printf("%02X",iv[i]); 646 printf("\n"); 647 } 648 if (printkey == 2) 649 { 650 ret=0; 651 goto end; 652 } 653 } 654 } 655 656 /* Only encrypt/decrypt as we write the file */ 657 if (benc != NULL) 658 wbio=BIO_push(benc,wbio); 659 660 for (;;) 661 { 662 inl=BIO_read(rbio,(char *)buff,bsize); 663 if (inl <= 0) break; 664 if (BIO_write(wbio,(char *)buff,inl) != inl) 665 { 666 BIO_printf(bio_err,"error writing output file\n"); 667 goto end; 668 } 669 } 670 if (!BIO_flush(wbio)) 671 { 672 BIO_printf(bio_err,"bad decrypt\n"); 673 goto end; 674 } 675 676 ret=0; 677 if (verbose) 678 { 679 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 680 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 681 } 682 end: 683 ERR_print_errors(bio_err); 684 if (strbuf != NULL) OPENSSL_free(strbuf); 685 if (buff != NULL) OPENSSL_free(buff); 686 if (in != NULL) BIO_free(in); 687 if (out != NULL) BIO_free_all(out); 688 if (benc != NULL) BIO_free(benc); 689 if (b64 != NULL) BIO_free(b64); 690 #ifdef ZLIB 691 if (bzl != NULL) BIO_free(bzl); 692 #endif 693 if(pass) OPENSSL_free(pass); 694 apps_shutdown(); 695 OPENSSL_EXIT(ret); 696 } 697 698 int set_hex(char *in, unsigned char *out, int size) 699 { 700 int i,n; 701 unsigned char j; 702 703 n=strlen(in); 704 if (n > (size*2)) 705 { 706 BIO_printf(bio_err,"hex string is too long\n"); 707 return(0); 708 } 709 memset(out,0,size); 710 for (i=0; i<n; i++) 711 { 712 j=(unsigned char)*in; 713 *(in++)='\0'; 714 if (j == 0) break; 715 if ((j >= '0') && (j <= '9')) 716 j-='0'; 717 else if ((j >= 'A') && (j <= 'F')) 718 j=j-'A'+10; 719 else if ((j >= 'a') && (j <= 'f')) 720 j=j-'a'+10; 721 else 722 { 723 BIO_printf(bio_err,"non-hex digit\n"); 724 return(0); 725 } 726 if (i&1) 727 out[i/2]|=j; 728 else 729 out[i/2]=(j<<4); 730 } 731 return(1); 732 } 733
