1 /* apps/enc.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include "apps.h" 63 #include <openssl/bio.h> 64 #include <openssl/err.h> 65 #include <openssl/evp.h> 66 #include <openssl/objects.h> 67 #include <openssl/x509.h> 68 #include <openssl/rand.h> 69 #include <openssl/pem.h> 70 #include <openssl/comp.h> 71 #include <ctype.h> 72 73 int set_hex(char *in,unsigned char *out,int size); 74 #undef SIZE 75 #undef BSIZE 76 #undef PROG 77 78 #define SIZE (512) 79 #define BSIZE (8*1024) 80 #define PROG enc_main 81 82 static void show_ciphers(const OBJ_NAME *name,void *bio_) 83 { 84 BIO *bio=bio_; 85 static int n; 86 87 if(!islower((unsigned char)*name->name)) 88 return; 89 90 BIO_printf(bio,"-%-25s",name->name); 91 if(++n == 3) 92 { 93 BIO_printf(bio,"\n"); 94 n=0; 95 } 96 else 97 BIO_printf(bio," "); 98 } 99 100 int MAIN(int, char **); 101 102 int MAIN(int argc, char **argv) 103 { 104 #ifndef OPENSSL_NO_ENGINE 105 ENGINE *e = NULL; 106 #endif 107 static const char magic[]="Salted__"; 108 char mbuf[sizeof magic-1]; 109 char *strbuf=NULL; 110 unsigned char *buff=NULL,*bufsize=NULL; 111 int bsize=BSIZE,verbose=0; 112 int ret=1,inl; 113 int nopad = 0; 114 unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH]; 115 unsigned char salt[PKCS5_SALT_LEN]; 116 char *str=NULL, *passarg = NULL, *pass = NULL; 117 char *hkey=NULL,*hiv=NULL,*hsalt = NULL; 118 char *md=NULL; 119 int enc=1,printkey=0,i,base64=0; 120 #ifdef ZLIB 121 int do_zlib=0; 122 BIO *bzl = NULL; 123 #endif 124 int debug=0,olb64=0,nosalt=0; 125 const EVP_CIPHER *cipher=NULL,*c; 126 EVP_CIPHER_CTX *ctx = NULL; 127 char *inf=NULL,*outf=NULL; 128 BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL; 129 #define PROG_NAME_SIZE 39 130 char pname[PROG_NAME_SIZE+1]; 131 #ifndef OPENSSL_NO_ENGINE 132 char *engine = NULL; 133 #endif 134 const EVP_MD *dgst=NULL; 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 fgets(buf,sizeof buf,infile); 247 fclose(infile); 248 i=strlen(buf); 249 if ((i > 0) && 250 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 251 buf[--i]='\0'; 252 if ((i > 0) && 253 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 254 buf[--i]='\0'; 255 if (i < 1) 256 { 257 BIO_printf(bio_err,"zero length password\n"); 258 goto bad; 259 } 260 str=buf; 261 } 262 else if (strcmp(*argv,"-K") == 0) 263 { 264 if (--argc < 1) goto bad; 265 hkey= *(++argv); 266 } 267 else if (strcmp(*argv,"-S") == 0) 268 { 269 if (--argc < 1) goto bad; 270 hsalt= *(++argv); 271 } 272 else if (strcmp(*argv,"-iv") == 0) 273 { 274 if (--argc < 1) goto bad; 275 hiv= *(++argv); 276 } 277 else if (strcmp(*argv,"-md") == 0) 278 { 279 if (--argc < 1) goto bad; 280 md= *(++argv); 281 } 282 else if ((argv[0][0] == '-') && 283 ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) 284 { 285 cipher=c; 286 } 287 else if (strcmp(*argv,"-none") == 0) 288 cipher=NULL; 289 else 290 { 291 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 292 bad: 293 BIO_printf(bio_err,"options are\n"); 294 BIO_printf(bio_err,"%-14s input file\n","-in <file>"); 295 BIO_printf(bio_err,"%-14s output file\n","-out <file>"); 296 BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>"); 297 BIO_printf(bio_err,"%-14s encrypt\n","-e"); 298 BIO_printf(bio_err,"%-14s decrypt\n","-d"); 299 BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); 300 BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k"); 301 BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile"); 302 BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md"); 303 BIO_printf(bio_err,"%-14s from a passphrase. One of md2, md5, sha or sha1\n",""); 304 BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S"); 305 BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); 306 BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); 307 BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); 308 BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad"); 309 #ifndef OPENSSL_NO_ENGINE 310 BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e"); 311 #endif 312 313 BIO_printf(bio_err,"Cipher Types\n"); 314 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, 315 show_ciphers, 316 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 e = setup_engine(bio_err, engine, 0); 327 #endif 328 329 if (md && (dgst=EVP_get_digestbyname(md)) == NULL) 330 { 331 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md); 332 goto end; 333 } 334 335 if (dgst == NULL) 336 { 337 dgst = EVP_md5(); 338 } 339 340 if (bufsize != NULL) 341 { 342 unsigned long n; 343 344 for (n=0; *bufsize; bufsize++) 345 { 346 i= *bufsize; 347 if ((i <= '9') && (i >= '0')) 348 n=n*10+i-'0'; 349 else if (i == 'k') 350 { 351 n*=1024; 352 bufsize++; 353 break; 354 } 355 } 356 if (*bufsize != '\0') 357 { 358 BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); 359 goto end; 360 } 361 362 /* It must be large enough for a base64 encoded line */ 363 if (base64 && n < 80) n=80; 364 365 bsize=(int)n; 366 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); 367 } 368 369 strbuf=OPENSSL_malloc(SIZE); 370 buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); 371 if ((buff == NULL) || (strbuf == NULL)) 372 { 373 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); 374 goto end; 375 } 376 377 in=BIO_new(BIO_s_file()); 378 out=BIO_new(BIO_s_file()); 379 if ((in == NULL) || (out == NULL)) 380 { 381 ERR_print_errors(bio_err); 382 goto end; 383 } 384 if (debug) 385 { 386 BIO_set_callback(in,BIO_debug_callback); 387 BIO_set_callback(out,BIO_debug_callback); 388 BIO_set_callback_arg(in,(char *)bio_err); 389 BIO_set_callback_arg(out,(char *)bio_err); 390 } 391 392 if (inf == NULL) 393 { 394 if (bufsize != NULL) 395 setvbuf(stdin, (char *)NULL, _IONBF, 0); 396 BIO_set_fp(in,stdin,BIO_NOCLOSE); 397 } 398 else 399 { 400 if (BIO_read_filename(in,inf) <= 0) 401 { 402 perror(inf); 403 goto end; 404 } 405 } 406 407 if(!str && passarg) { 408 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { 409 BIO_printf(bio_err, "Error getting password\n"); 410 goto end; 411 } 412 str = pass; 413 } 414 415 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) 416 { 417 for (;;) 418 { 419 char buf[200]; 420 421 BIO_snprintf(buf,sizeof buf,"enter %s %s password:", 422 OBJ_nid2ln(EVP_CIPHER_nid(cipher)), 423 (enc)?"encryption":"decryption"); 424 strbuf[0]='\0'; 425 i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); 426 if (i == 0) 427 { 428 if (strbuf[0] == '\0') 429 { 430 ret=1; 431 goto end; 432 } 433 str=strbuf; 434 break; 435 } 436 if (i < 0) 437 { 438 BIO_printf(bio_err,"bad password read\n"); 439 goto end; 440 } 441 } 442 } 443 444 445 if (outf == NULL) 446 { 447 BIO_set_fp(out,stdout,BIO_NOCLOSE); 448 if (bufsize != NULL) 449 setvbuf(stdout, (char *)NULL, _IONBF, 0); 450 #ifdef OPENSSL_SYS_VMS 451 { 452 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 453 out = BIO_push(tmpbio, out); 454 } 455 #endif 456 } 457 else 458 { 459 if (BIO_write_filename(out,outf) <= 0) 460 { 461 perror(outf); 462 goto end; 463 } 464 } 465 466 rbio=in; 467 wbio=out; 468 469 #ifdef ZLIB 470 471 if (do_zlib) 472 { 473 if ((bzl=BIO_new(BIO_f_zlib())) == NULL) 474 goto end; 475 if (enc) 476 wbio=BIO_push(bzl,wbio); 477 else 478 rbio=BIO_push(bzl,rbio); 479 } 480 #endif 481 482 if (base64) 483 { 484 if ((b64=BIO_new(BIO_f_base64())) == NULL) 485 goto end; 486 if (debug) 487 { 488 BIO_set_callback(b64,BIO_debug_callback); 489 BIO_set_callback_arg(b64,(char *)bio_err); 490 } 491 if (olb64) 492 BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); 493 if (enc) 494 wbio=BIO_push(b64,wbio); 495 else 496 rbio=BIO_push(b64,rbio); 497 } 498 499 if (cipher != NULL) 500 { 501 /* Note that str is NULL if a key was passed on the command 502 * line, so we get no salt in that case. Is this a bug? 503 */ 504 if (str != NULL) 505 { 506 /* Salt handling: if encrypting generate a salt and 507 * write to output BIO. If decrypting read salt from 508 * input BIO. 509 */ 510 unsigned char *sptr; 511 if(nosalt) sptr = NULL; 512 else { 513 if(enc) { 514 if(hsalt) { 515 if(!set_hex(hsalt,salt,sizeof salt)) { 516 BIO_printf(bio_err, 517 "invalid hex salt value\n"); 518 goto end; 519 } 520 } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0) 521 goto end; 522 /* If -P option then don't bother writing */ 523 if((printkey != 2) 524 && (BIO_write(wbio,magic, 525 sizeof magic-1) != sizeof magic-1 526 || BIO_write(wbio, 527 (char *)salt, 528 sizeof salt) != sizeof salt)) { 529 BIO_printf(bio_err,"error writing output file\n"); 530 goto end; 531 } 532 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf 533 || BIO_read(rbio, 534 (unsigned char *)salt, 535 sizeof salt) != sizeof salt) { 536 BIO_printf(bio_err,"error reading input file\n"); 537 goto end; 538 } else if(memcmp(mbuf,magic,sizeof magic-1)) { 539 BIO_printf(bio_err,"bad magic number\n"); 540 goto end; 541 } 542 543 sptr = salt; 544 } 545 546 EVP_BytesToKey(cipher,dgst,sptr, 547 (unsigned char *)str, 548 strlen(str),1,key,iv); 549 /* zero the complete buffer or the string 550 * passed from the command line 551 * bug picked up by 552 * Larry J. Hughes Jr. <hughes@indiana.edu> */ 553 if (str == strbuf) 554 OPENSSL_cleanse(str,SIZE); 555 else 556 OPENSSL_cleanse(str,strlen(str)); 557 } 558 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) 559 { 560 BIO_printf(bio_err,"invalid hex iv value\n"); 561 goto end; 562 } 563 if ((hiv == NULL) && (str == NULL) 564 && EVP_CIPHER_iv_length(cipher) != 0) 565 { 566 /* No IV was explicitly set and no IV was generated 567 * during EVP_BytesToKey. Hence the IV is undefined, 568 * making correct decryption impossible. */ 569 BIO_printf(bio_err, "iv undefined\n"); 570 goto end; 571 } 572 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) 573 { 574 BIO_printf(bio_err,"invalid hex key value\n"); 575 goto end; 576 } 577 578 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 579 goto end; 580 581 /* Since we may be changing parameters work on the encryption 582 * context rather than calling BIO_set_cipher(). 583 */ 584 585 BIO_get_cipher_ctx(benc, &ctx); 586 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) 587 { 588 BIO_printf(bio_err, "Error setting cipher %s\n", 589 EVP_CIPHER_name(cipher)); 590 ERR_print_errors(bio_err); 591 goto end; 592 } 593 594 if (nopad) 595 EVP_CIPHER_CTX_set_padding(ctx, 0); 596 597 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 598 { 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 { 607 BIO_set_callback(benc,BIO_debug_callback); 608 BIO_set_callback_arg(benc,(char *)bio_err); 609 } 610 611 if (printkey) 612 { 613 if (!nosalt) 614 { 615 printf("salt="); 616 for (i=0; i<(int)sizeof(salt); i++) 617 printf("%02X",salt[i]); 618 printf("\n"); 619 } 620 if (cipher->key_len > 0) 621 { 622 printf("key="); 623 for (i=0; i<cipher->key_len; i++) 624 printf("%02X",key[i]); 625 printf("\n"); 626 } 627 if (cipher->iv_len > 0) 628 { 629 printf("iv ="); 630 for (i=0; i<cipher->iv_len; i++) 631 printf("%02X",iv[i]); 632 printf("\n"); 633 } 634 if (printkey == 2) 635 { 636 ret=0; 637 goto end; 638 } 639 } 640 } 641 642 /* Only encrypt/decrypt as we write the file */ 643 if (benc != NULL) 644 wbio=BIO_push(benc,wbio); 645 646 for (;;) 647 { 648 inl=BIO_read(rbio,(char *)buff,bsize); 649 if (inl <= 0) break; 650 if (BIO_write(wbio,(char *)buff,inl) != inl) 651 { 652 BIO_printf(bio_err,"error writing output file\n"); 653 goto end; 654 } 655 } 656 if (!BIO_flush(wbio)) 657 { 658 BIO_printf(bio_err,"bad decrypt\n"); 659 goto end; 660 } 661 662 ret=0; 663 if (verbose) 664 { 665 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 666 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 667 } 668 end: 669 ERR_print_errors(bio_err); 670 if (strbuf != NULL) OPENSSL_free(strbuf); 671 if (buff != NULL) OPENSSL_free(buff); 672 if (in != NULL) BIO_free(in); 673 if (out != NULL) BIO_free_all(out); 674 if (benc != NULL) BIO_free(benc); 675 if (b64 != NULL) BIO_free(b64); 676 #ifdef ZLIB 677 if (bzl != NULL) BIO_free(bzl); 678 #endif 679 if(pass) OPENSSL_free(pass); 680 apps_shutdown(); 681 OPENSSL_EXIT(ret); 682 } 683 684 int set_hex(char *in, unsigned char *out, int size) 685 { 686 int i,n; 687 unsigned char j; 688 689 n=strlen(in); 690 if (n > (size*2)) 691 { 692 BIO_printf(bio_err,"hex string is too long\n"); 693 return(0); 694 } 695 memset(out,0,size); 696 for (i=0; i<n; i++) 697 { 698 j=(unsigned char)*in; 699 *(in++)='\0'; 700 if (j == 0) break; 701 if ((j >= '0') && (j <= '9')) 702 j-='0'; 703 else if ((j >= 'A') && (j <= 'F')) 704 j=j-'A'+10; 705 else if ((j >= 'a') && (j <= 'f')) 706 j=j-'a'+10; 707 else 708 { 709 BIO_printf(bio_err,"non-hex digit\n"); 710 return(0); 711 } 712 if (i&1) 713 out[i/2]|=j; 714 else 715 out[i/2]=(j<<4); 716 } 717 return(1); 718 } 719