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 static const char magic[]="Salted__"; 104 char mbuf[sizeof magic-1]; 105 char *strbuf=NULL; 106 unsigned char *buff=NULL,*bufsize=NULL; 107 int bsize=BSIZE,verbose=0; 108 int ret=1,inl; 109 int nopad = 0; 110 unsigned char key[EVP_MAX_KEY_LENGTH],iv[EVP_MAX_IV_LENGTH]; 111 unsigned char salt[PKCS5_SALT_LEN]; 112 char *str=NULL, *passarg = NULL, *pass = NULL; 113 char *hkey=NULL,*hiv=NULL,*hsalt = NULL; 114 char *md=NULL; 115 int enc=1,printkey=0,i,base64=0; 116 int debug=0,olb64=0,nosalt=0; 117 const EVP_CIPHER *cipher=NULL,*c; 118 EVP_CIPHER_CTX *ctx = NULL; 119 char *inf=NULL,*outf=NULL; 120 BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL; 121#define PROG_NAME_SIZE 39 122 char pname[PROG_NAME_SIZE+1]; 123#ifndef OPENSSL_NO_ENGINE 124 char *engine = NULL; 125#endif 126 const EVP_MD *dgst=NULL; 127 int non_fips_allow = 0; 128 129 apps_startup(); 130 131 if (bio_err == NULL) 132 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 133 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 134 135 if (!load_config(bio_err, NULL)) 136 goto end; 137 138 /* first check the program name */ 139 program_name(argv[0],pname,sizeof pname); 140 if (strcmp(pname,"base64") == 0) 141 base64=1; 142 143 cipher=EVP_get_cipherbyname(pname); 144 if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0)) 145 { 146 BIO_printf(bio_err,"%s is an unknown cipher\n",pname); 147 goto bad; 148 } 149 150 argc--; 151 argv++; 152 while (argc >= 1) 153 { 154 if (strcmp(*argv,"-e") == 0) 155 enc=1; 156 else if (strcmp(*argv,"-in") == 0) 157 { 158 if (--argc < 1) goto bad; 159 inf= *(++argv); 160 } 161 else if (strcmp(*argv,"-out") == 0) 162 { 163 if (--argc < 1) goto bad; 164 outf= *(++argv); 165 } 166 else if (strcmp(*argv,"-pass") == 0) 167 { 168 if (--argc < 1) goto bad; 169 passarg= *(++argv); 170 } 171#ifndef OPENSSL_NO_ENGINE 172 else if (strcmp(*argv,"-engine") == 0) 173 { 174 if (--argc < 1) goto bad; 175 engine= *(++argv); 176 } 177#endif 178 else if (strcmp(*argv,"-d") == 0) 179 enc=0; 180 else if (strcmp(*argv,"-p") == 0) 181 printkey=1; 182 else if (strcmp(*argv,"-v") == 0) 183 verbose=1; 184 else if (strcmp(*argv,"-nopad") == 0) 185 nopad=1; 186 else if (strcmp(*argv,"-salt") == 0) 187 nosalt=0; 188 else if (strcmp(*argv,"-nosalt") == 0) 189 nosalt=1; 190 else if (strcmp(*argv,"-debug") == 0) 191 debug=1; 192 else if (strcmp(*argv,"-P") == 0) 193 printkey=2; 194 else if (strcmp(*argv,"-A") == 0) 195 olb64=1; 196 else if (strcmp(*argv,"-a") == 0) 197 base64=1; 198 else if (strcmp(*argv,"-base64") == 0) 199 base64=1; 200 else if (strcmp(*argv,"-bufsize") == 0) 201 { 202 if (--argc < 1) goto bad; 203 bufsize=(unsigned char *)*(++argv); 204 } 205 else if (strcmp(*argv,"-k") == 0) 206 { 207 if (--argc < 1) goto bad; 208 str= *(++argv); 209 } 210 else if (strcmp(*argv,"-kfile") == 0) 211 { 212 static char buf[128]; 213 FILE *infile; 214 char *file; 215 216 if (--argc < 1) goto bad; 217 file= *(++argv); 218 infile=fopen(file,"r"); 219 if (infile == NULL) 220 { 221 BIO_printf(bio_err,"unable to read key from '%s'\n", 222 file); 223 goto bad; 224 } 225 buf[0]='\0'; 226 if (!fgets(buf,sizeof buf,infile)) 227 { 228 BIO_printf(bio_err,"unable to read key from '%s'\n", 229 file); 230 goto bad; 231 } 232 fclose(infile); 233 i=strlen(buf); 234 if ((i > 0) && 235 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 236 buf[--i]='\0'; 237 if ((i > 0) && 238 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 239 buf[--i]='\0'; 240 if (i < 1) 241 { 242 BIO_printf(bio_err,"zero length password\n"); 243 goto bad; 244 } 245 str=buf; 246 } 247 else if (strcmp(*argv,"-K") == 0) 248 { 249 if (--argc < 1) goto bad; 250 hkey= *(++argv); 251 } 252 else if (strcmp(*argv,"-S") == 0) 253 { 254 if (--argc < 1) goto bad; 255 hsalt= *(++argv); 256 } 257 else if (strcmp(*argv,"-iv") == 0) 258 { 259 if (--argc < 1) goto bad; 260 hiv= *(++argv); 261 } 262 else if (strcmp(*argv,"-md") == 0) 263 { 264 if (--argc < 1) goto bad; 265 md= *(++argv); 266 } 267 else if (strcmp(*argv,"-non-fips-allow") == 0) 268 non_fips_allow = 1; 269 else if ((argv[0][0] == '-') && 270 ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) 271 { 272 cipher=c; 273 } 274 else if (strcmp(*argv,"-none") == 0) 275 cipher=NULL; 276 else 277 { 278 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 279bad: 280 BIO_printf(bio_err,"options are\n"); 281 BIO_printf(bio_err,"%-14s input file\n","-in <file>"); 282 BIO_printf(bio_err,"%-14s output file\n","-out <file>"); 283 BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>"); 284 BIO_printf(bio_err,"%-14s encrypt\n","-e"); 285 BIO_printf(bio_err,"%-14s decrypt\n","-d"); 286 BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); 287 BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k"); 288 BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile"); 289 BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md"); 290 BIO_printf(bio_err,"%-14s from a passphrase. One of md2, md5, sha or sha1\n",""); 291 BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); 292 BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); 293 BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); 294#ifndef OPENSSL_NO_ENGINE 295 BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e"); 296#endif 297 298 BIO_printf(bio_err,"Cipher Types\n"); 299 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, 300 show_ciphers, 301 bio_err); 302 BIO_printf(bio_err,"\n"); 303 304 goto end; 305 } 306 argc--; 307 argv++; 308 } 309 310#ifndef OPENSSL_NO_ENGINE 311 setup_engine(bio_err, engine, 0); 312#endif 313 314 if (md && (dgst=EVP_get_digestbyname(md)) == NULL) 315 { 316 BIO_printf(bio_err,"%s is an unsupported message digest type\n",md); 317 goto end; 318 } 319 320 if (dgst == NULL) 321 { 322 if (in_FIPS_mode) 323 dgst = EVP_sha1(); 324 else 325 dgst = EVP_md5(); 326 } 327 328 if (bufsize != NULL) 329 { 330 unsigned long n; 331 332 for (n=0; *bufsize; bufsize++) 333 { 334 i= *bufsize; 335 if ((i <= '9') && (i >= '0')) 336 n=n*10+i-'0'; 337 else if (i == 'k') 338 { 339 n*=1024; 340 bufsize++; 341 break; 342 } 343 } 344 if (*bufsize != '\0') 345 { 346 BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); 347 goto end; 348 } 349 350 /* It must be large enough for a base64 encoded line */ 351 if (base64 && n < 80) n=80; 352 353 bsize=(int)n; 354 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); 355 } 356 357 strbuf=OPENSSL_malloc(SIZE); 358 buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); 359 if ((buff == NULL) || (strbuf == NULL)) 360 { 361 BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); 362 goto end; 363 } 364 365 in=BIO_new(BIO_s_file()); 366 out=BIO_new(BIO_s_file()); 367 if ((in == NULL) || (out == NULL)) 368 { 369 ERR_print_errors(bio_err); 370 goto end; 371 } 372 if (debug) 373 { 374 BIO_set_callback(in,BIO_debug_callback); 375 BIO_set_callback(out,BIO_debug_callback); 376 BIO_set_callback_arg(in,(char *)bio_err); 377 BIO_set_callback_arg(out,(char *)bio_err); 378 } 379 380 if (inf == NULL) 381 { 382 if (bufsize != NULL) 383 setvbuf(stdin, (char *)NULL, _IONBF, 0); 384 BIO_set_fp(in,stdin,BIO_NOCLOSE); 385 } 386 else 387 { 388 if (BIO_read_filename(in,inf) <= 0) 389 { 390 perror(inf); 391 goto end; 392 } 393 } 394 395 if(!str && passarg) { 396 if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { 397 BIO_printf(bio_err, "Error getting password\n"); 398 goto end; 399 } 400 str = pass; 401 } 402 403 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) 404 { 405 for (;;) 406 { 407 char buf[200]; 408 409 BIO_snprintf(buf,sizeof buf,"enter %s %s password:", 410 OBJ_nid2ln(EVP_CIPHER_nid(cipher)), 411 (enc)?"encryption":"decryption"); 412 strbuf[0]='\0'; 413 i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); 414 if (i == 0) 415 { 416 if (strbuf[0] == '\0') 417 { 418 ret=1; 419 goto end; 420 } 421 str=strbuf; 422 break; 423 } 424 if (i < 0) 425 { 426 BIO_printf(bio_err,"bad password read\n"); 427 goto end; 428 } 429 } 430 } 431 432 433 if (outf == NULL) 434 { 435 BIO_set_fp(out,stdout,BIO_NOCLOSE); 436 if (bufsize != NULL) 437 setvbuf(stdout, (char *)NULL, _IONBF, 0); 438#ifdef OPENSSL_SYS_VMS 439 { 440 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 441 out = BIO_push(tmpbio, out); 442 } 443#endif 444 } 445 else 446 { 447 if (BIO_write_filename(out,outf) <= 0) 448 { 449 perror(outf); 450 goto end; 451 } 452 } 453 454 rbio=in; 455 wbio=out; 456 457 if (base64) 458 { 459 if ((b64=BIO_new(BIO_f_base64())) == NULL) 460 goto end; 461 if (debug) 462 { 463 BIO_set_callback(b64,BIO_debug_callback); 464 BIO_set_callback_arg(b64,(char *)bio_err); 465 } 466 if (olb64) 467 BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); 468 if (enc) 469 wbio=BIO_push(b64,wbio); 470 else 471 rbio=BIO_push(b64,rbio); 472 } 473 474 if (cipher != NULL) 475 { 476 /* Note that str is NULL if a key was passed on the command 477 * line, so we get no salt in that case. Is this a bug? 478 */ 479 if (str != NULL) 480 { 481 /* Salt handling: if encrypting generate a salt and 482 * write to output BIO. If decrypting read salt from 483 * input BIO. 484 */ 485 unsigned char *sptr; 486 if(nosalt) sptr = NULL; 487 else { 488 if(enc) { 489 if(hsalt) { 490 if(!set_hex(hsalt,salt,sizeof salt)) { 491 BIO_printf(bio_err, 492 "invalid hex salt value\n"); 493 goto end; 494 } 495 } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0) 496 goto end; 497 /* If -P option then don't bother writing */ 498 if((printkey != 2) 499 && (BIO_write(wbio,magic, 500 sizeof magic-1) != sizeof magic-1 501 || BIO_write(wbio, 502 (char *)salt, 503 sizeof salt) != sizeof salt)) { 504 BIO_printf(bio_err,"error writing output file\n"); 505 goto end; 506 } 507 } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf 508 || BIO_read(rbio, 509 (unsigned char *)salt, 510 sizeof salt) != sizeof salt) { 511 BIO_printf(bio_err,"error reading input file\n"); 512 goto end; 513 } else if(memcmp(mbuf,magic,sizeof magic-1)) { 514 BIO_printf(bio_err,"bad magic number\n"); 515 goto end; 516 } 517 518 sptr = salt; 519 } 520 521 EVP_BytesToKey(cipher,dgst,sptr, 522 (unsigned char *)str, 523 strlen(str),1,key,iv); 524 /* zero the complete buffer or the string 525 * passed from the command line 526 * bug picked up by 527 * Larry J. Hughes Jr. <hughes@indiana.edu> */ 528 if (str == strbuf) 529 OPENSSL_cleanse(str,SIZE); 530 else 531 OPENSSL_cleanse(str,strlen(str)); 532 } 533 if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) 534 { 535 BIO_printf(bio_err,"invalid hex iv value\n"); 536 goto end; 537 } 538 if ((hiv == NULL) && (str == NULL) 539 && EVP_CIPHER_iv_length(cipher) != 0) 540 { 541 /* No IV was explicitly set and no IV was generated 542 * during EVP_BytesToKey. Hence the IV is undefined, 543 * making correct decryption impossible. */ 544 BIO_printf(bio_err, "iv undefined\n"); 545 goto end; 546 } 547 if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) 548 { 549 BIO_printf(bio_err,"invalid hex key value\n"); 550 goto end; 551 } 552 553 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 554 goto end; 555 556 /* Since we may be changing parameters work on the encryption 557 * context rather than calling BIO_set_cipher(). 558 */ 559 560 BIO_get_cipher_ctx(benc, &ctx); 561 562 if (non_fips_allow) 563 EVP_CIPHER_CTX_set_flags(ctx, 564 EVP_CIPH_FLAG_NON_FIPS_ALLOW); 565 566 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) 567 { 568 BIO_printf(bio_err, "Error setting cipher %s\n", 569 EVP_CIPHER_name(cipher)); 570 ERR_print_errors(bio_err); 571 goto end; 572 } 573 574 if (nopad) 575 EVP_CIPHER_CTX_set_padding(ctx, 0); 576 577 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) 578 { 579 BIO_printf(bio_err, "Error setting cipher %s\n", 580 EVP_CIPHER_name(cipher)); 581 ERR_print_errors(bio_err); 582 goto end; 583 } 584 585 if (debug) 586 { 587 BIO_set_callback(benc,BIO_debug_callback); 588 BIO_set_callback_arg(benc,(char *)bio_err); 589 } 590 591 if (printkey) 592 { 593 if (!nosalt) 594 { 595 printf("salt="); 596 for (i=0; i<(int)sizeof(salt); i++) 597 printf("%02X",salt[i]); 598 printf("\n"); 599 } 600 if (cipher->key_len > 0) 601 { 602 printf("key="); 603 for (i=0; i<cipher->key_len; i++) 604 printf("%02X",key[i]); 605 printf("\n"); 606 } 607 if (cipher->iv_len > 0) 608 { 609 printf("iv ="); 610 for (i=0; i<cipher->iv_len; i++) 611 printf("%02X",iv[i]); 612 printf("\n"); 613 } 614 if (printkey == 2) 615 { 616 ret=0; 617 goto end; 618 } 619 } 620 } 621 622 /* Only encrypt/decrypt as we write the file */ 623 if (benc != NULL) 624 wbio=BIO_push(benc,wbio); 625 626 for (;;) 627 { 628 inl=BIO_read(rbio,(char *)buff,bsize); 629 if (inl <= 0) break; 630 if (BIO_write(wbio,(char *)buff,inl) != inl) 631 { 632 BIO_printf(bio_err,"error writing output file\n"); 633 goto end; 634 } 635 } 636 if (!BIO_flush(wbio)) 637 { 638 BIO_printf(bio_err,"bad decrypt\n"); 639 goto end; 640 } 641 642 ret=0; 643 if (verbose) 644 { 645 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 646 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 647 } 648end: 649 ERR_print_errors(bio_err); 650 if (strbuf != NULL) OPENSSL_free(strbuf); 651 if (buff != NULL) OPENSSL_free(buff); 652 if (in != NULL) BIO_free(in); 653 if (out != NULL) BIO_free_all(out); 654 if (benc != NULL) BIO_free(benc); 655 if (b64 != NULL) BIO_free(b64); 656 if(pass) OPENSSL_free(pass); 657 apps_shutdown(); 658 OPENSSL_EXIT(ret); 659 } 660 661int set_hex(char *in, unsigned char *out, int size) 662 { 663 int i,n; 664 unsigned char j; 665 666 n=strlen(in); 667 if (n > (size*2)) 668 { 669 BIO_printf(bio_err,"hex string is too long\n"); 670 return(0); 671 } 672 memset(out,0,size); 673 for (i=0; i<n; i++) 674 { 675 j=(unsigned char)*in; 676 *(in++)='\0'; 677 if (j == 0) break; 678 if ((j >= '0') && (j <= '9')) 679 j-='0'; 680 else if ((j >= 'A') && (j <= 'F')) 681 j=j-'A'+10; 682 else if ((j >= 'a') && (j <= 'f')) 683 j=j-'a'+10; 684 else 685 { 686 BIO_printf(bio_err,"non-hex digit\n"); 687 return(0); 688 } 689 if (i&1) 690 out[i/2]|=j; 691 else 692 out[i/2]=(j<<4); 693 } 694 return(1); 695 } 696