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 #ifndef NO_MD5 69 #include <openssl/md5.h> 70 #endif 71 #include <openssl/pem.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 int MAIN(int argc, char **argv) 83 { 84 char *strbuf=NULL; 85 unsigned char *buff=NULL,*bufsize=NULL; 86 int bsize=BSIZE,verbose=0; 87 int ret=1,inl; 88 unsigned char key[24],iv[MD5_DIGEST_LENGTH]; 89 char *str=NULL; 90 char *hkey=NULL,*hiv=NULL; 91 int enc=1,printkey=0,i,base64=0; 92 int debug=0,olb64=0; 93 const EVP_CIPHER *cipher=NULL,*c; 94 char *inf=NULL,*outf=NULL; 95 BIO *in=NULL,*out=NULL,*b64=NULL,*benc=NULL,*rbio=NULL,*wbio=NULL; 96 #define PROG_NAME_SIZE 16 97 char pname[PROG_NAME_SIZE]; 98 99 apps_startup(); 100 101 if (bio_err == NULL) 102 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 103 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 104 105 /* first check the program name */ 106 program_name(argv[0],pname,PROG_NAME_SIZE); 107 if (strcmp(pname,"base64") == 0) 108 base64=1; 109 110 cipher=EVP_get_cipherbyname(pname); 111 if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0)) 112 { 113 BIO_printf(bio_err,"%s is an unknown cipher\n",pname); 114 goto bad; 115 } 116 117 argc--; 118 argv++; 119 while (argc >= 1) 120 { 121 if (strcmp(*argv,"-e") == 0) 122 enc=1; 123 else if (strcmp(*argv,"-in") == 0) 124 { 125 if (--argc < 1) goto bad; 126 inf= *(++argv); 127 } 128 else if (strcmp(*argv,"-out") == 0) 129 { 130 if (--argc < 1) goto bad; 131 outf= *(++argv); 132 } 133 else if (strcmp(*argv,"-d") == 0) 134 enc=0; 135 else if (strcmp(*argv,"-p") == 0) 136 printkey=1; 137 else if (strcmp(*argv,"-v") == 0) 138 verbose=1; 139 else if ((strcmp(*argv,"-debug") == 0) || 140 (strcmp(*argv,"-d") == 0)) 141 debug=1; 142 else if (strcmp(*argv,"-P") == 0) 143 printkey=2; 144 else if (strcmp(*argv,"-A") == 0) 145 olb64=1; 146 else if (strcmp(*argv,"-a") == 0) 147 base64=1; 148 else if (strcmp(*argv,"-base64") == 0) 149 base64=1; 150 else if (strcmp(*argv,"-bufsize") == 0) 151 { 152 if (--argc < 1) goto bad; 153 bufsize=(unsigned char *)*(++argv); 154 } 155 else if (strcmp(*argv,"-k") == 0) 156 { 157 if (--argc < 1) goto bad; 158 str= *(++argv); 159 } 160 else if (strcmp(*argv,"-kfile") == 0) 161 { 162 static char buf[128]; 163 FILE *infile; 164 char *file; 165 166 if (--argc < 1) goto bad; 167 file= *(++argv); 168 infile=fopen(file,"r"); 169 if (infile == NULL) 170 { 171 BIO_printf(bio_err,"unable to read key from '%s'\n", 172 file); 173 goto bad; 174 } 175 buf[0]='\0'; 176 fgets(buf,128,infile); 177 fclose(infile); 178 i=strlen(buf); 179 if ((i > 0) && 180 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 181 buf[--i]='\0'; 182 if ((i > 0) && 183 ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) 184 buf[--i]='\0'; 185 if (i < 1) 186 { 187 BIO_printf(bio_err,"zero length password\n"); 188 goto bad; 189 } 190 str=buf; 191 } 192 else if (strcmp(*argv,"-K") == 0) 193 { 194 if (--argc < 1) goto bad; 195 hkey= *(++argv); 196 } 197 else if (strcmp(*argv,"-iv") == 0) 198 { 199 if (--argc < 1) goto bad; 200 hiv= *(++argv); 201 } 202 else if ((argv[0][0] == '-') && 203 ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) 204 { 205 cipher=c; 206 } 207 else if (strcmp(*argv,"-none") == 0) 208 cipher=NULL; 209 else 210 { 211 BIO_printf(bio_err,"unknown option '%s'\n",*argv); 212 bad: 213 BIO_printf(bio_err,"options are\n"); 214 BIO_printf(bio_err,"%-14s input file\n","-in <file>"); 215 BIO_printf(bio_err,"%-14s output fileencrypt\n","-out <file>"); 216 BIO_printf(bio_err,"%-14s encrypt\n","-e"); 217 BIO_printf(bio_err,"%-14s decrypt\n","-d"); 218 BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); 219 BIO_printf(bio_err,"%-14s key is the next argument\n","-k"); 220 BIO_printf(bio_err,"%-14s key is the first line of the file argument\n","-kfile"); 221 BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); 222 BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); 223 BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); 224 225 BIO_printf(bio_err,"Cipher Types\n"); 226 BIO_printf(bio_err,"des : 56 bit key DES encryption\n"); 227 BIO_printf(bio_err,"des_ede :112 bit key ede DES encryption\n"); 228 BIO_printf(bio_err,"des_ede3:168 bit key ede DES encryption\n"); 229 #ifndef NO_IDEA 230 BIO_printf(bio_err,"idea :128 bit key IDEA encryption\n"); 231 #endif 232 #ifndef NO_RC4 233 BIO_printf(bio_err,"rc2 :128 bit key RC2 encryption\n"); 234 #endif 235 #ifndef NO_BF 236 BIO_printf(bio_err,"bf :128 bit key BlowFish encryption\n"); 237 #endif 238 #ifndef NO_RC4 239 BIO_printf(bio_err," -%-5s :128 bit key RC4 encryption\n", 240 LN_rc4); 241 #endif 242 243 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 244 LN_des_ecb,LN_des_cbc, 245 LN_des_cfb64,LN_des_ofb64); 246 BIO_printf(bio_err," -%-4s (%s)\n", 247 "des", LN_des_cbc); 248 249 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 250 LN_des_ede,LN_des_ede_cbc, 251 LN_des_ede_cfb64,LN_des_ede_ofb64); 252 BIO_printf(bio_err," -desx -none\n"); 253 254 255 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 256 LN_des_ede3,LN_des_ede3_cbc, 257 LN_des_ede3_cfb64,LN_des_ede3_ofb64); 258 BIO_printf(bio_err," -%-4s (%s)\n", 259 "des3", LN_des_ede3_cbc); 260 261 #ifndef NO_IDEA 262 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 263 LN_idea_ecb, LN_idea_cbc, 264 LN_idea_cfb64, LN_idea_ofb64); 265 BIO_printf(bio_err," -%-4s (%s)\n","idea",LN_idea_cbc); 266 #endif 267 #ifndef NO_RC2 268 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 269 LN_rc2_ecb, LN_rc2_cbc, 270 LN_rc2_cfb64, LN_rc2_ofb64); 271 BIO_printf(bio_err," -%-4s (%s)\n","rc2", LN_rc2_cbc); 272 #endif 273 #ifndef NO_BF 274 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 275 LN_bf_ecb, LN_bf_cbc, 276 LN_bf_cfb64, LN_bf_ofb64); 277 BIO_printf(bio_err," -%-4s (%s)\n","bf", LN_bf_cbc); 278 #endif 279 #ifndef NO_CAST 280 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 281 LN_cast5_ecb, LN_cast5_cbc, 282 LN_cast5_cfb64, LN_cast5_ofb64); 283 BIO_printf(bio_err," -%-4s (%s)\n","cast", LN_cast5_cbc); 284 #endif 285 #ifndef NO_RC5 286 BIO_printf(bio_err," -%-12s -%-12s -%-12s -%-12s", 287 LN_rc5_ecb, LN_rc5_cbc, 288 LN_rc5_cfb64, LN_rc5_ofb64); 289 BIO_printf(bio_err," -%-4s (%s)\n","rc5", LN_rc5_cbc); 290 #endif 291 goto end; 292 } 293 argc--; 294 argv++; 295 } 296 297 if (bufsize != NULL) 298 { 299 unsigned long n; 300 301 for (n=0; *bufsize; bufsize++) 302 { 303 i= *bufsize; 304 if ((i <= '9') && (i >= '0')) 305 n=n*10+i-'0'; 306 else if (i == 'k') 307 { 308 n*=1024; 309 bufsize++; 310 break; 311 } 312 } 313 if (*bufsize != '\0') 314 { 315 BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); 316 goto end; 317 } 318 319 /* It must be large enough for a base64 encoded line */ 320 if (n < 80) n=80; 321 322 bsize=(int)n; 323 if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); 324 } 325 326 strbuf=Malloc(SIZE); 327 buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize)); 328 if ((buff == NULL) || (strbuf == NULL)) 329 { 330 BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); 331 goto end; 332 } 333 334 in=BIO_new(BIO_s_file()); 335 out=BIO_new(BIO_s_file()); 336 if ((in == NULL) || (out == NULL)) 337 { 338 ERR_print_errors(bio_err); 339 goto end; 340 } 341 if (debug) 342 { 343 BIO_set_callback(in,BIO_debug_callback); 344 BIO_set_callback(out,BIO_debug_callback); 345 BIO_set_callback_arg(in,bio_err); 346 BIO_set_callback_arg(out,bio_err); 347 } 348 349 if (inf == NULL) 350 BIO_set_fp(in,stdin,BIO_NOCLOSE); 351 else 352 { 353 if (BIO_read_filename(in,inf) <= 0) 354 { 355 perror(inf); 356 goto end; 357 } 358 } 359 360 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) 361 { 362 for (;;) 363 { 364 char buf[200]; 365 366 sprintf(buf,"enter %s %s password:", 367 OBJ_nid2ln(EVP_CIPHER_nid(cipher)), 368 (enc)?"encryption":"decryption"); 369 strbuf[0]='\0'; 370 i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); 371 if (i == 0) 372 { 373 if (strbuf[0] == '\0') 374 { 375 ret=1; 376 goto end; 377 } 378 str=strbuf; 379 break; 380 } 381 if (i < 0) 382 { 383 BIO_printf(bio_err,"bad password read\n"); 384 goto end; 385 } 386 } 387 } 388 389 if (cipher != NULL) 390 { 391 if (str != NULL) 392 { 393 EVP_BytesToKey(cipher,EVP_md5(),NULL, 394 (unsigned char *)str, 395 strlen(str),1,key,iv); 396 /* zero the complete buffer or the string 397 * passed from the command line 398 * bug picked up by 399 * Larry J. Hughes Jr. <hughes@indiana.edu> */ 400 if (str == strbuf) 401 memset(str,0,SIZE); 402 else 403 memset(str,0,strlen(str)); 404 } 405 if ((hiv != NULL) && !set_hex(hiv,iv,8)) 406 { 407 BIO_printf(bio_err,"invalid hex iv value\n"); 408 goto end; 409 } 410 if ((hkey != NULL) && !set_hex(hkey,key,24)) 411 { 412 BIO_printf(bio_err,"invalid hex key value\n"); 413 goto end; 414 } 415 416 if ((benc=BIO_new(BIO_f_cipher())) == NULL) 417 goto end; 418 BIO_set_cipher(benc,cipher,key,iv,enc); 419 if (debug) 420 { 421 BIO_set_callback(benc,BIO_debug_callback); 422 BIO_set_callback_arg(benc,bio_err); 423 } 424 425 if (printkey) 426 { 427 if (cipher->key_len > 0) 428 { 429 printf("key="); 430 for (i=0; i<cipher->key_len; i++) 431 printf("%02X",key[i]); 432 printf("\n"); 433 } 434 if (cipher->iv_len > 0) 435 { 436 printf("iv ="); 437 for (i=0; i<cipher->iv_len; i++) 438 printf("%02X",iv[i]); 439 printf("\n"); 440 } 441 if (printkey == 2) 442 { 443 ret=0; 444 goto end; 445 } 446 } 447 } 448 449 450 if (outf == NULL) 451 BIO_set_fp(out,stdout,BIO_NOCLOSE); 452 else 453 { 454 if (BIO_write_filename(out,outf) <= 0) 455 { 456 perror(outf); 457 goto end; 458 } 459 } 460 461 rbio=in; 462 wbio=out; 463 464 if (base64) 465 { 466 if ((b64=BIO_new(BIO_f_base64())) == NULL) 467 goto end; 468 if (debug) 469 { 470 BIO_set_callback(b64,BIO_debug_callback); 471 BIO_set_callback_arg(b64,bio_err); 472 } 473 if (olb64) 474 BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); 475 if (enc) 476 wbio=BIO_push(b64,wbio); 477 else 478 rbio=BIO_push(b64,rbio); 479 } 480 481 /* Only encrypt/decrypt as we write the file */ 482 if (benc != NULL) 483 wbio=BIO_push(benc,wbio); 484 485 for (;;) 486 { 487 inl=BIO_read(rbio,(char *)buff,bsize); 488 if (inl <= 0) break; 489 if (BIO_write(wbio,(char *)buff,inl) != inl) 490 { 491 BIO_printf(bio_err,"error writing output file\n"); 492 goto end; 493 } 494 } 495 if (!BIO_flush(wbio)) 496 { 497 BIO_printf(bio_err,"bad decrypt\n"); 498 goto end; 499 } 500 501 ret=0; 502 if (verbose) 503 { 504 BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); 505 BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); 506 } 507 end: 508 if (strbuf != NULL) Free(strbuf); 509 if (buff != NULL) Free(buff); 510 if (in != NULL) BIO_free(in); 511 if (out != NULL) BIO_free(out); 512 if (benc != NULL) BIO_free(benc); 513 if (b64 != NULL) BIO_free(b64); 514 EXIT(ret); 515 } 516 517 int set_hex(char *in, unsigned char *out, int size) 518 { 519 int i,n; 520 unsigned char j; 521 522 n=strlen(in); 523 if (n > (size*2)) 524 { 525 BIO_printf(bio_err,"hex string is too long\n"); 526 return(0); 527 } 528 memset(out,0,size); 529 for (i=0; i<n; i++) 530 { 531 j=(unsigned char)*in; 532 *(in++)='\0'; 533 if (j == 0) break; 534 if ((j >= '0') && (j <= '9')) 535 j-='0'; 536 else if ((j >= 'A') && (j <= 'F')) 537 j=j-'A'+10; 538 else if ((j >= 'a') && (j <= 'f')) 539 j=j-'a'+10; 540 else 541 { 542 BIO_printf(bio_err,"non-hex digit\n"); 543 return(0); 544 } 545 if (i&1) 546 out[i/2]|=j; 547 else 548 out[i/2]=(j<<4); 549 } 550 return(1); 551 } 552