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 <ctype.h> 71 72int set_hex(char *in,unsigned char *out,int size); 73#undef SIZE 74#undef BSIZE 75#undef PROG 76 77#define SIZE (512) 78#define BSIZE (8*1024) 79#define PROG enc_main 80 81static void show_ciphers(const OBJ_NAME *name,void *bio_) 82 { 83 BIO *bio=bio_; 84 static int n; 85 86 if(!islower((unsigned char)*name->name)) 87 return; 88 89 BIO_printf(bio,"-%-25s",name->name); 90 if(++n == 3) 91 { 92 BIO_printf(bio,"\n"); 93 n=0; 94 } 95 else 96 BIO_printf(bio," "); 97 } 98 99int MAIN(int, char **); 100 101int MAIN(int argc, char **argv) 102 { 103#ifndef OPENSSL_NO_ENGINE 104 ENGINE *e = NULL; 105#endif 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 int debug=0,olb64=0,nosalt=0; 120 const EVP_CIPHER *cipher=NULL,*c; 121 EVP_CIPHER_CTX *ctx = NULL; 122 char *inf=NULL,*outf=NULL; 123 BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL; 124#define PROG_NAME_SIZE 39 125 char pname[PROG_NAME_SIZE+1]; 126#ifndef OPENSSL_NO_ENGINE 127 char *engine = NULL; 128#endif 129 const EVP_MD *dgst=NULL; 130 int non_fips_allow = 0; 131 132 apps_startup(); 133 134 if (bio_err == NULL) 135 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 136 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 137 138 if (!load_config(bio_err, NULL)) 139 goto end; 140 141 /* first check the program name */ 142 program_name(argv[0],pname,sizeof pname); 143 if (strcmp(pname,"base64") == 0) 144 base64=1; 145 146 cipher=EVP_get_cipherbyname(pname); 147 if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0)) 148 { 149 BIO_printf(bio_err,"%s is an unknown cipher\n",pname); 150 goto bad; 151 } 152 153 argc--; 154 argv++; 155 while (argc >= 1) 156 { 157 if (strcmp(*argv,"-e") == 0) 158 enc=1; 159 else if (strcmp(*argv,"-in") == 0) 160 { 161 if (--argc < 1) goto bad; 162 inf= *(++argv); 163 } 164 else if (strcmp(*argv,"-out") == 0) 165 { 166 if (--argc < 1) goto bad; 167 outf= *(++argv); 168 } 169 else if (strcmp(*argv,"-pass") == 0) 170 { 171 if (--argc < 1) goto bad; 172 passarg= *(++argv); 173 } 174#ifndef OPENSSL_NO_ENGINE 175 else if (strcmp(*argv,"-engine") == 0) 176 { 177 if (--argc < 1) goto bad; 178 engine= *(++argv); 179 } 180#endif 181 else if (strcmp(*argv,"-d") == 0) 182 enc=0; 183 else if (strcmp(*argv,"-p") == 0) 184 printkey=1; 185 else if (strcmp(*argv,"-v") == 0) 186 verbose=1; 187 else if (strcmp(*argv,"-nopad") == 0) 188 nopad=1; 189 else if (strcmp(*argv,"-salt") == 0) 190 nosalt=0; 191 else if (strcmp(*argv,"-nosalt") == 0) 192 nosalt=1; 193 else if (strcmp(*argv,"-debug") == 0) 194 debug=1; 195 else if (strcmp(*argv,"-P") == 0) 196 printkey=2; 197 else if (strcmp(*argv,"-A") == 0) 198 olb64=1; 199 else if (strcmp(*argv,"-a") == 0) 200 base64=1; 201 else if (strcmp(*argv,"-base64") == 0) 202 base64=1; 203 else if (strcmp(*argv,"-bufsize") == 0) 204 { 205 if (--argc < 1) goto bad; 206 bufsize=(unsigned char *)*(++argv); 207 } 208 else if (strcmp(*argv,"-k") == 0) 209 { 210 if (--argc < 1) goto bad; 211 str= *(++argv); 212 } 213 else if (strcmp(*argv,"-kfile") == 0) 214 { 215 static char buf[128]; 216 FILE *infile; 217 char *file; 218 219 if (--argc < 1) goto bad; 220 file= *(++argv); 221 infile=fopen(file,"r"); 222 if (infile == NULL) 223 { 224 BIO_printf(bio_err,"unable to read key from '%s'\n", 225 file); 226 goto bad; 227 } 228 buf[0]='\0'; 229 fgets(buf,sizeof buf,infile); 230 fclose(infile); 231 i=strlen(buf); 232 if ((i > 0) && 233 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 234 buf[--i]='\0'; 235 if ((i > 0) && 236 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 237 buf[--i]='\0'; 238 if (i < 1) 239 { 240 BIO_printf(bio_err,"zero length password\n"); 241 goto bad; 242 } 243 str=buf; 244 } 245 else if (strcmp(*argv,"-K") == 0) 246 { 247 if (--argc < 1) goto bad; 248 hkey= *(++argv); 249 } 250 else if (strcmp(*argv,"-S") == 0) 251 { 252 if (--argc < 1) goto bad; 253 hsalt= *(++argv); 254 } 255 else if (strcmp(*argv,"-iv") == 0) 256 { 257 if (--argc < 1) goto bad; 258 hiv= *(++argv); 259 } 260 else if (strcmp(*argv,"-md") == 0) 261 { 262 if (--argc < 1) goto bad; 263 md= *(++argv); 264 } 265 else if (strcmp(*argv,"-non-fips-allow") == 0) 266 non_fips_allow = 1; 267 else if ((argv[0][0] == '-') && 268 ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) 269 { 270 cipher=c; 271 } 272 else if (strcmp(*argv,"-none") == 0) 273 cipher=NULL; 274 else 275 { 276 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 277bad: 278 BIO_printf(bio_err,"options are\n"); 279 BIO_printf(bio_err,"%-14s input file\n","-in <file>"); 280 BIO_printf(bio_err,"%-14s output file\n","-out <file>"); 281 BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>"); 282 BIO_printf(bio_err,"%-14s encrypt\n","-e"); 283 BIO_printf(bio_err,"%-14s decrypt\n","-d"); 284 BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); 285 BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k"); 286 BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile"); 287 BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md"); 288 BIO_printf(bio_err,"%-14s from a passphrase. One of md2, md5, sha or sha1\n",""); 289 BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); 290 BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); 291 BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); 292#ifndef OPENSSL_NO_ENGINE 293 BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e"); 294#endif 295 296 BIO_printf(bio_err,"Cipher Types\n"); 297 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, 298 show_ciphers, 299 bio_err); 300 BIO_printf(bio_err,"\n"); 301 302 goto end; 303 } 304 argc--; 305 argv++; 306 } 307 308#ifndef OPENSSL_NO_ENGINE 309 e = setup_engine(bio_err, engine, 0); 310#endif 311 312 if (md && (dgst=EVP_get_digestbyname(md)) == NULL) 313 { 314 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md); 315 goto end; 316 } 317 318 if (dgst == NULL) 319 { 320 if (in_FIPS_mode) 321 dgst = EVP_sha1(); 322 else 323 dgst = EVP_md5(); 324 } 325 326 if (bufsize != NULL) 327 { 328 unsigned long n; 329 330 for (n=0; *bufsize; bufsize++) 331 { 332 i= *bufsize; 333 if ((i <= '9') && (i >= '0')) 334 n=n*10+i-'0'; 335 else if (i == 'k') 336 { 337 n*=1024; 338 bufsize++; 339 break; 340 } 341 } 342 if (*bufsize != '\0') 343 { 344 BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); 345 goto end; 346 } 347 348 /* It must be large enough for a base64 encoded line */ 349 if (n < 80) n=80; 350 351 bsize=(int)n; 352 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); 353 } 354 355 strbuf=OPENSSL_malloc(SIZE); 356 buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); 357 if ((buff == NULL) || (strbuf == NULL)) 358 { 359 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); 360 goto end; 361 } 362 363 in=BIO_new(BIO_s_file()); 364 out=BIO_new(BIO_s_file()); 365 if ((in == NULL) || (out == NULL)) 366 { 367 ERR_print_errors(bio_err); 368 goto end; 369 } 370 if (debug) 371 { 372 BIO_set_callback(in,BIO_debug_callback); 373 BIO_set_callback(out,BIO_debug_callback); 374 BIO_set_callback_arg(in,bio_err); 375 BIO_set_callback_arg(out,bio_err); 376 } 377 378 if (inf == NULL) 379 BIO_set_fp(in,stdin,BIO_NOCLOSE); 380 else 381 { 382 if (BIO_read_filename(in,inf) <= 0) 383 { 384 perror(inf); 385 goto end; 386 } 387 } 388 389 if(!str && passarg) { 390 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { 391 BIO_printf(bio_err, "Error getting password\n"); 392 goto end; 393 } 394 str = pass; 395 } 396 397 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) 398 { 399 for (;;) 400 { 401 char buf[200]; 402 403 BIO_snprintf(buf,sizeof buf,"enter %s %s password:", 404 OBJ_nid2ln(EVP_CIPHER_nid(cipher)), 405 (enc)?"encryption":"decryption"); 406 strbuf[0]='\0'; 407 i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); 408 if (i == 0) 409 { 410 if (strbuf[0] == '\0') 411 { 412 ret=1; 413 goto end; 414 } 415 str=strbuf; 416 break; 417 } 418 if (i < 0) 419 { 420 BIO_printf(bio_err,"bad password read\n"); 421 goto end; 422 } 423 } 424 } 425 426 427 if (outf == NULL) 428 { 429 BIO_set_fp(out,stdout,BIO_NOCLOSE); 430#ifdef OPENSSL_SYS_VMS 431 { 432 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 433 out = BIO_push(tmpbio, out); 434 } 435#endif 436 } 437 else 438 { 439 if (BIO_write_filename(out,outf) <= 0) 440 { 441 perror(outf); 442 goto end; 443 } 444 } 445 446 rbio=in; 447 wbio=out; 448 449 if (base64) 450 { 451 if ((b64=BIO_new(BIO_f_base64())) == NULL) 452 goto end; 453 if (debug) 454 { 455 BIO_set_callback(b64,BIO_debug_callback); 456 BIO_set_callback_arg(b64,bio_err); 457 } 458 if (olb64) 459 BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); 460 if (enc) 461 wbio=BIO_push(b64,wbio); 462 else 463 rbio=BIO_push(b64,rbio); 464 } 465 466 if (cipher != NULL) 467 { 468 /* Note that str is NULL if a key was passed on the command 469 * line, so we get no salt in that case. Is this a bug? 470 */ 471 if (str != NULL) 472 { 473 /* Salt handling: if encrypting generate a salt and 474 * write to output BIO. If decrypting read salt from 475 * input BIO. 476 */ 477 unsigned char *sptr; 478 if(nosalt) sptr = NULL; 479 else { 480 if(enc) { 481 if(hsalt) { 482 if(!set_hex(hsalt,salt,sizeof salt)) { 483 BIO_printf(bio_err, 484 "invalid hex salt value\n"); 485 goto end; 486 } 487 } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0) 488 goto end; 489 /* If -P option then don't bother writing */ 490 if((printkey != 2) 491 && (BIO_write(wbio,magic, 492 sizeof magic-1) != sizeof magic-1 493 || BIO_write(wbio, 494 (char *)salt, 495 sizeof salt) != sizeof salt)) { 496 BIO_printf(bio_err,"error writing output file\n"); 497 goto end; 498 } 499 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf 500 || BIO_read(rbio, 501 (unsigned char *)salt, 502 sizeof salt) != sizeof salt) { 503 BIO_printf(bio_err,"error reading input file\n"); 504 goto end; 505 } else if(memcmp(mbuf,magic,sizeof magic-1)) { 506 BIO_printf(bio_err,"bad magic number\n"); 507 goto end; 508 } 509 510 sptr = salt; 511 } 512 513 EVP_BytesToKey(cipher,dgst,sptr, 514 (unsigned char *)str, 515 strlen(str),1,key,iv); 516 /* zero the complete buffer or the string 517 * passed from the command line 518 * bug picked up by 519 * Larry J. Hughes Jr. <hughes@indiana.edu> */ 520 if (str == strbuf) 521 OPENSSL_cleanse(str,SIZE); 522 else 523 OPENSSL_cleanse(str,strlen(str)); 524 } 525 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) 526 { 527 BIO_printf(bio_err,"invalid hex iv value\n"); 528 goto end; 529 } 530 if ((hiv == NULL) && (str == NULL)) 531 { 532 /* No IV was explicitly set and no IV was generated 533 * during EVP_BytesToKey. Hence the IV is undefined, 534 * making correct decryption impossible. */ 535 BIO_printf(bio_err, "iv undefined\n"); 536 goto end; 537 } 538 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) 539 { 540 BIO_printf(bio_err,"invalid hex key value\n"); 541 goto end; 542 } 543 544 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 545 goto end; 546 547 /* Since we may be changing parameters work on the encryption 548 * context rather than calling BIO_set_cipher(). 549 */ 550 551 BIO_get_cipher_ctx(benc, &ctx); 552 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) 553 { 554 BIO_printf(bio_err, "Error setting cipher %s\n", 555 EVP_CIPHER_name(cipher)); 556 ERR_print_errors(bio_err); 557 goto end; 558 } 559 560 if (non_fips_allow) 561 EVP_CIPHER_CTX_set_flags(ctx, 562 EVP_CIPH_FLAG_NON_FIPS_ALLOW); 563 564 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 565 { 566 BIO_printf(bio_err, "Error setting cipher %s\n", 567 EVP_CIPHER_name(cipher)); 568 ERR_print_errors(bio_err); 569 goto end; 570 } 571 572 if (nopad) 573 EVP_CIPHER_CTX_set_padding(ctx, 0); 574 575 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 576 { 577 BIO_printf(bio_err, "Error setting cipher %s\n", 578 EVP_CIPHER_name(cipher)); 579 ERR_print_errors(bio_err); 580 goto end; 581 } 582 583 if (debug) 584 { 585 BIO_set_callback(benc,BIO_debug_callback); 586 BIO_set_callback_arg(benc,bio_err); 587 } 588 589 if (printkey) 590 { 591 if (!nosalt) 592 { 593 printf("salt="); 594 for (i=0; i<sizeof salt; i++) 595 printf("%02X",salt[i]); 596 printf("\n"); 597 } 598 if (cipher->key_len > 0) 599 { 600 printf("key="); 601 for (i=0; i<cipher->key_len; i++) 602 printf("%02X",key[i]); 603 printf("\n"); 604 } 605 if (cipher->iv_len > 0) 606 { 607 printf("iv ="); 608 for (i=0; i<cipher->iv_len; i++) 609 printf("%02X",iv[i]); 610 printf("\n"); 611 } 612 if (printkey == 2) 613 { 614 ret=0; 615 goto end; 616 } 617 } 618 } 619 620 /* Only encrypt/decrypt as we write the file */ 621 if (benc != NULL) 622 wbio=BIO_push(benc,wbio); 623 624 for (;;) 625 { 626 inl=BIO_read(rbio,(char *)buff,bsize); 627 if (inl <= 0) break; 628 if (BIO_write(wbio,(char *)buff,inl) != inl) 629 { 630 BIO_printf(bio_err,"error writing output file\n"); 631 goto end; 632 } 633 } 634 if (!BIO_flush(wbio)) 635 { 636 BIO_printf(bio_err,"bad decrypt\n"); 637 goto end; 638 } 639 640 ret=0; 641 if (verbose) 642 { 643 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 644 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 645 } 646end: 647 ERR_print_errors(bio_err); 648 if (strbuf != NULL) OPENSSL_free(strbuf); 649 if (buff != NULL) OPENSSL_free(buff); 650 if (in != NULL) BIO_free(in); 651 if (out != NULL) BIO_free_all(out); 652 if (benc != NULL) BIO_free(benc); 653 if (b64 != NULL) BIO_free(b64); 654 if(pass) OPENSSL_free(pass); 655 apps_shutdown(); 656 OPENSSL_EXIT(ret); 657 } 658 659int set_hex(char *in, unsigned char *out, int size) 660 { 661 int i,n; 662 unsigned char j; 663 664 n=strlen(in); 665 if (n > (size*2)) 666 { 667 BIO_printf(bio_err,"hex string is too long\n"); 668 return(0); 669 } 670 memset(out,0,size); 671 for (i=0; i<n; i++) 672 { 673 j=(unsigned char)*in; 674 *(in++)='\0'; 675 if (j == 0) break; 676 if ((j >= '0') && (j <= '9')) 677 j-='0'; 678 else if ((j >= 'A') && (j <= 'F')) 679 j=j-'A'+10; 680 else if ((j >= 'a') && (j <= 'f')) 681 j=j-'a'+10; 682 else 683 { 684 BIO_printf(bio_err,"non-hex digit\n"); 685 return(0); 686 } 687 if (i&1) 688 out[i/2]|=j; 689 else 690 out[i/2]=(j<<4); 691 } 692 return(1); 693 } 694