Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | 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; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 132 | |
| 133 | apps_startup(); |
| 134 | |
| 135 | if (bio_err == NULL) |
| 136 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
| 137 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
| 138 | |
| 139 | if (!load_config(bio_err, NULL)) |
| 140 | goto end; |
| 141 | |
| 142 | /* first check the program name */ |
| 143 | program_name(argv[0],pname,sizeof pname); |
| 144 | if (strcmp(pname,"base64") == 0) |
| 145 | base64=1; |
| 146 | #ifdef ZLIB |
| 147 | if (strcmp(pname,"zlib") == 0) |
| 148 | do_zlib=1; |
| 149 | #endif |
| 150 | |
| 151 | cipher=EVP_get_cipherbyname(pname); |
| 152 | #ifdef ZLIB |
| 153 | if (!do_zlib && !base64 && (cipher == NULL) |
| 154 | && (strcmp(pname,"enc") != 0)) |
| 155 | #else |
| 156 | if (!base64 && (cipher == NULL) && (strcmp(pname,"enc") != 0)) |
| 157 | #endif |
| 158 | { |
| 159 | BIO_printf(bio_err,"%s is an unknown cipher\n",pname); |
| 160 | goto bad; |
| 161 | } |
| 162 | |
| 163 | argc--; |
| 164 | argv++; |
| 165 | while (argc >= 1) |
| 166 | { |
| 167 | if (strcmp(*argv,"-e") == 0) |
| 168 | enc=1; |
| 169 | else if (strcmp(*argv,"-in") == 0) |
| 170 | { |
| 171 | if (--argc < 1) goto bad; |
| 172 | inf= *(++argv); |
| 173 | } |
| 174 | else if (strcmp(*argv,"-out") == 0) |
| 175 | { |
| 176 | if (--argc < 1) goto bad; |
| 177 | outf= *(++argv); |
| 178 | } |
| 179 | else if (strcmp(*argv,"-pass") == 0) |
| 180 | { |
| 181 | if (--argc < 1) goto bad; |
| 182 | passarg= *(++argv); |
| 183 | } |
| 184 | #ifndef OPENSSL_NO_ENGINE |
| 185 | else if (strcmp(*argv,"-engine") == 0) |
| 186 | { |
| 187 | if (--argc < 1) goto bad; |
| 188 | engine= *(++argv); |
| 189 | } |
| 190 | #endif |
| 191 | else if (strcmp(*argv,"-d") == 0) |
| 192 | enc=0; |
| 193 | else if (strcmp(*argv,"-p") == 0) |
| 194 | printkey=1; |
| 195 | else if (strcmp(*argv,"-v") == 0) |
| 196 | verbose=1; |
| 197 | else if (strcmp(*argv,"-nopad") == 0) |
| 198 | nopad=1; |
| 199 | else if (strcmp(*argv,"-salt") == 0) |
| 200 | nosalt=0; |
| 201 | else if (strcmp(*argv,"-nosalt") == 0) |
| 202 | nosalt=1; |
| 203 | else if (strcmp(*argv,"-debug") == 0) |
| 204 | debug=1; |
| 205 | else if (strcmp(*argv,"-P") == 0) |
| 206 | printkey=2; |
| 207 | else if (strcmp(*argv,"-A") == 0) |
| 208 | olb64=1; |
| 209 | else if (strcmp(*argv,"-a") == 0) |
| 210 | base64=1; |
| 211 | else if (strcmp(*argv,"-base64") == 0) |
| 212 | base64=1; |
| 213 | #ifdef ZLIB |
| 214 | else if (strcmp(*argv,"-z") == 0) |
| 215 | do_zlib=1; |
| 216 | #endif |
| 217 | else if (strcmp(*argv,"-bufsize") == 0) |
| 218 | { |
| 219 | if (--argc < 1) goto bad; |
| 220 | bufsize=(unsigned char *)*(++argv); |
| 221 | } |
| 222 | else if (strcmp(*argv,"-k") == 0) |
| 223 | { |
| 224 | if (--argc < 1) goto bad; |
| 225 | str= *(++argv); |
| 226 | } |
| 227 | else if (strcmp(*argv,"-kfile") == 0) |
| 228 | { |
| 229 | static char buf[128]; |
| 230 | FILE *infile; |
| 231 | char *file; |
| 232 | |
| 233 | if (--argc < 1) goto bad; |
| 234 | file= *(++argv); |
| 235 | infile=fopen(file,"r"); |
| 236 | if (infile == NULL) |
| 237 | { |
| 238 | BIO_printf(bio_err,"unable to read key from '%s'\n", |
| 239 | file); |
| 240 | goto bad; |
| 241 | } |
| 242 | buf[0]='\0'; |
| 243 | if (!fgets(buf,sizeof buf,infile)) |
| 244 | { |
| 245 | BIO_printf(bio_err,"unable to read key from '%s'\n", |
| 246 | file); |
| 247 | goto bad; |
| 248 | } |
| 249 | fclose(infile); |
| 250 | i=strlen(buf); |
| 251 | if ((i > 0) && |
| 252 | ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) |
| 253 | buf[--i]='\0'; |
| 254 | if ((i > 0) && |
| 255 | ((buf[i-1] == '\n') || (buf[i-1] == '\r'))) |
| 256 | buf[--i]='\0'; |
| 257 | if (i < 1) |
| 258 | { |
| 259 | BIO_printf(bio_err,"zero length password\n"); |
| 260 | goto bad; |
| 261 | } |
| 262 | str=buf; |
| 263 | } |
| 264 | else if (strcmp(*argv,"-K") == 0) |
| 265 | { |
| 266 | if (--argc < 1) goto bad; |
| 267 | hkey= *(++argv); |
| 268 | } |
| 269 | else if (strcmp(*argv,"-S") == 0) |
| 270 | { |
| 271 | if (--argc < 1) goto bad; |
| 272 | hsalt= *(++argv); |
| 273 | } |
| 274 | else if (strcmp(*argv,"-iv") == 0) |
| 275 | { |
| 276 | if (--argc < 1) goto bad; |
| 277 | hiv= *(++argv); |
| 278 | } |
| 279 | else if (strcmp(*argv,"-md") == 0) |
| 280 | { |
| 281 | if (--argc < 1) goto bad; |
| 282 | md= *(++argv); |
| 283 | } |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 284 | else if ((argv[0][0] == '-') && |
| 285 | ((c=EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) |
| 286 | { |
| 287 | cipher=c; |
| 288 | } |
| 289 | else if (strcmp(*argv,"-none") == 0) |
| 290 | cipher=NULL; |
| 291 | else |
| 292 | { |
| 293 | BIO_printf(bio_err,"unknown option '%s'\n",*argv); |
| 294 | bad: |
| 295 | BIO_printf(bio_err,"options are\n"); |
| 296 | BIO_printf(bio_err,"%-14s input file\n","-in <file>"); |
| 297 | BIO_printf(bio_err,"%-14s output file\n","-out <file>"); |
| 298 | BIO_printf(bio_err,"%-14s pass phrase source\n","-pass <arg>"); |
| 299 | BIO_printf(bio_err,"%-14s encrypt\n","-e"); |
| 300 | BIO_printf(bio_err,"%-14s decrypt\n","-d"); |
| 301 | BIO_printf(bio_err,"%-14s base64 encode/decode, depending on encryption flag\n","-a/-base64"); |
| 302 | BIO_printf(bio_err,"%-14s passphrase is the next argument\n","-k"); |
| 303 | BIO_printf(bio_err,"%-14s passphrase is the first line of the file argument\n","-kfile"); |
| 304 | BIO_printf(bio_err,"%-14s the next argument is the md to use to create a key\n","-md"); |
| 305 | BIO_printf(bio_err,"%-14s from a passphrase. One of md2, md5, sha or sha1\n",""); |
| 306 | BIO_printf(bio_err,"%-14s salt in hex is the next argument\n","-S"); |
| 307 | BIO_printf(bio_err,"%-14s key/iv in hex is the next argument\n","-K/-iv"); |
| 308 | BIO_printf(bio_err,"%-14s print the iv/key (then exit if -P)\n","-[pP]"); |
| 309 | BIO_printf(bio_err,"%-14s buffer size\n","-bufsize <n>"); |
| 310 | BIO_printf(bio_err,"%-14s disable standard block padding\n","-nopad"); |
| 311 | #ifndef OPENSSL_NO_ENGINE |
| 312 | BIO_printf(bio_err,"%-14s use engine e, possibly a hardware device.\n","-engine e"); |
| 313 | #endif |
| 314 | |
| 315 | BIO_printf(bio_err,"Cipher Types\n"); |
| 316 | OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, |
| 317 | show_ciphers, |
| 318 | bio_err); |
| 319 | BIO_printf(bio_err,"\n"); |
| 320 | |
| 321 | goto end; |
| 322 | } |
| 323 | argc--; |
| 324 | argv++; |
| 325 | } |
| 326 | |
| 327 | #ifndef OPENSSL_NO_ENGINE |
| 328 | setup_engine(bio_err, engine, 0); |
| 329 | #endif |
| 330 | |
| 331 | if (md && (dgst=EVP_get_digestbyname(md)) == NULL) |
| 332 | { |
| 333 | BIO_printf(bio_err,"%s is an unsupported message digest type\n",md); |
| 334 | goto end; |
| 335 | } |
| 336 | |
| 337 | if (dgst == NULL) |
| 338 | { |
| 339 | dgst = EVP_md5(); |
| 340 | } |
| 341 | |
| 342 | if (bufsize != NULL) |
| 343 | { |
| 344 | unsigned long n; |
| 345 | |
| 346 | for (n=0; *bufsize; bufsize++) |
| 347 | { |
| 348 | i= *bufsize; |
| 349 | if ((i <= '9') && (i >= '0')) |
| 350 | n=n*10+i-'0'; |
| 351 | else if (i == 'k') |
| 352 | { |
| 353 | n*=1024; |
| 354 | bufsize++; |
| 355 | break; |
| 356 | } |
| 357 | } |
| 358 | if (*bufsize != '\0') |
| 359 | { |
| 360 | BIO_printf(bio_err,"invalid 'bufsize' specified.\n"); |
| 361 | goto end; |
| 362 | } |
| 363 | |
| 364 | /* It must be large enough for a base64 encoded line */ |
| 365 | if (base64 && n < 80) n=80; |
| 366 | |
| 367 | bsize=(int)n; |
| 368 | if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize); |
| 369 | } |
| 370 | |
| 371 | strbuf=OPENSSL_malloc(SIZE); |
| 372 | buff=(unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); |
| 373 | if ((buff == NULL) || (strbuf == NULL)) |
| 374 | { |
| 375 | BIO_printf(bio_err,"OPENSSL_malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize)); |
| 376 | goto end; |
| 377 | } |
| 378 | |
| 379 | in=BIO_new(BIO_s_file()); |
| 380 | out=BIO_new(BIO_s_file()); |
| 381 | if ((in == NULL) || (out == NULL)) |
| 382 | { |
| 383 | ERR_print_errors(bio_err); |
| 384 | goto end; |
| 385 | } |
| 386 | if (debug) |
| 387 | { |
| 388 | BIO_set_callback(in,BIO_debug_callback); |
| 389 | BIO_set_callback(out,BIO_debug_callback); |
| 390 | BIO_set_callback_arg(in,(char *)bio_err); |
| 391 | BIO_set_callback_arg(out,(char *)bio_err); |
| 392 | } |
| 393 | |
| 394 | if (inf == NULL) |
| 395 | { |
| 396 | #ifndef OPENSSL_NO_SETVBUF_IONBF |
| 397 | if (bufsize != NULL) |
| 398 | setvbuf(stdin, (char *)NULL, _IONBF, 0); |
| 399 | #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ |
| 400 | BIO_set_fp(in,stdin,BIO_NOCLOSE); |
| 401 | } |
| 402 | else |
| 403 | { |
| 404 | if (BIO_read_filename(in,inf) <= 0) |
| 405 | { |
| 406 | perror(inf); |
| 407 | goto end; |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | if(!str && passarg) { |
| 412 | if(!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { |
| 413 | BIO_printf(bio_err, "Error getting password\n"); |
| 414 | goto end; |
| 415 | } |
| 416 | str = pass; |
| 417 | } |
| 418 | |
| 419 | if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) |
| 420 | { |
| 421 | for (;;) |
| 422 | { |
| 423 | char buf[200]; |
| 424 | |
| 425 | BIO_snprintf(buf,sizeof buf,"enter %s %s password:", |
| 426 | OBJ_nid2ln(EVP_CIPHER_nid(cipher)), |
| 427 | (enc)?"encryption":"decryption"); |
| 428 | strbuf[0]='\0'; |
| 429 | i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc); |
| 430 | if (i == 0) |
| 431 | { |
| 432 | if (strbuf[0] == '\0') |
| 433 | { |
| 434 | ret=1; |
| 435 | goto end; |
| 436 | } |
| 437 | str=strbuf; |
| 438 | break; |
| 439 | } |
| 440 | if (i < 0) |
| 441 | { |
| 442 | BIO_printf(bio_err,"bad password read\n"); |
| 443 | goto end; |
| 444 | } |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | |
| 449 | if (outf == NULL) |
| 450 | { |
| 451 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
| 452 | #ifndef OPENSSL_NO_SETVBUF_IONBF |
| 453 | if (bufsize != NULL) |
| 454 | setvbuf(stdout, (char *)NULL, _IONBF, 0); |
| 455 | #endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ |
| 456 | #ifdef OPENSSL_SYS_VMS |
| 457 | { |
| 458 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| 459 | out = BIO_push(tmpbio, out); |
| 460 | } |
| 461 | #endif |
| 462 | } |
| 463 | else |
| 464 | { |
| 465 | if (BIO_write_filename(out,outf) <= 0) |
| 466 | { |
| 467 | perror(outf); |
| 468 | goto end; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | rbio=in; |
| 473 | wbio=out; |
| 474 | |
| 475 | #ifdef ZLIB |
| 476 | |
| 477 | if (do_zlib) |
| 478 | { |
| 479 | if ((bzl=BIO_new(BIO_f_zlib())) == NULL) |
| 480 | goto end; |
| 481 | if (enc) |
| 482 | wbio=BIO_push(bzl,wbio); |
| 483 | else |
| 484 | rbio=BIO_push(bzl,rbio); |
| 485 | } |
| 486 | #endif |
| 487 | |
| 488 | if (base64) |
| 489 | { |
| 490 | if ((b64=BIO_new(BIO_f_base64())) == NULL) |
| 491 | goto end; |
| 492 | if (debug) |
| 493 | { |
| 494 | BIO_set_callback(b64,BIO_debug_callback); |
| 495 | BIO_set_callback_arg(b64,(char *)bio_err); |
| 496 | } |
| 497 | if (olb64) |
| 498 | BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL); |
| 499 | if (enc) |
| 500 | wbio=BIO_push(b64,wbio); |
| 501 | else |
| 502 | rbio=BIO_push(b64,rbio); |
| 503 | } |
| 504 | |
| 505 | if (cipher != NULL) |
| 506 | { |
| 507 | /* Note that str is NULL if a key was passed on the command |
| 508 | * line, so we get no salt in that case. Is this a bug? |
| 509 | */ |
| 510 | if (str != NULL) |
| 511 | { |
| 512 | /* Salt handling: if encrypting generate a salt and |
| 513 | * write to output BIO. If decrypting read salt from |
| 514 | * input BIO. |
| 515 | */ |
| 516 | unsigned char *sptr; |
| 517 | if(nosalt) sptr = NULL; |
| 518 | else { |
| 519 | if(enc) { |
| 520 | if(hsalt) { |
| 521 | if(!set_hex(hsalt,salt,sizeof salt)) { |
| 522 | BIO_printf(bio_err, |
| 523 | "invalid hex salt value\n"); |
| 524 | goto end; |
| 525 | } |
| 526 | } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0) |
| 527 | goto end; |
| 528 | /* If -P option then don't bother writing */ |
| 529 | if((printkey != 2) |
| 530 | && (BIO_write(wbio,magic, |
| 531 | sizeof magic-1) != sizeof magic-1 |
| 532 | || BIO_write(wbio, |
| 533 | (char *)salt, |
| 534 | sizeof salt) != sizeof salt)) { |
| 535 | BIO_printf(bio_err,"error writing output file\n"); |
| 536 | goto end; |
| 537 | } |
| 538 | } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf |
| 539 | || BIO_read(rbio, |
| 540 | (unsigned char *)salt, |
| 541 | sizeof salt) != sizeof salt) { |
| 542 | BIO_printf(bio_err,"error reading input file\n"); |
| 543 | goto end; |
| 544 | } else if(memcmp(mbuf,magic,sizeof magic-1)) { |
| 545 | BIO_printf(bio_err,"bad magic number\n"); |
| 546 | goto end; |
| 547 | } |
| 548 | |
| 549 | sptr = salt; |
| 550 | } |
| 551 | |
| 552 | EVP_BytesToKey(cipher,dgst,sptr, |
| 553 | (unsigned char *)str, |
| 554 | strlen(str),1,key,iv); |
| 555 | /* zero the complete buffer or the string |
| 556 | * passed from the command line |
| 557 | * bug picked up by |
| 558 | * Larry J. Hughes Jr. <hughes@indiana.edu> */ |
| 559 | if (str == strbuf) |
| 560 | OPENSSL_cleanse(str,SIZE); |
| 561 | else |
| 562 | OPENSSL_cleanse(str,strlen(str)); |
| 563 | } |
| 564 | if ((hiv != NULL) && !set_hex(hiv,iv,sizeof iv)) |
| 565 | { |
| 566 | BIO_printf(bio_err,"invalid hex iv value\n"); |
| 567 | goto end; |
| 568 | } |
| 569 | if ((hiv == NULL) && (str == NULL) |
| 570 | && EVP_CIPHER_iv_length(cipher) != 0) |
| 571 | { |
| 572 | /* No IV was explicitly set and no IV was generated |
| 573 | * during EVP_BytesToKey. Hence the IV is undefined, |
| 574 | * making correct decryption impossible. */ |
| 575 | BIO_printf(bio_err, "iv undefined\n"); |
| 576 | goto end; |
| 577 | } |
| 578 | if ((hkey != NULL) && !set_hex(hkey,key,sizeof key)) |
| 579 | { |
| 580 | BIO_printf(bio_err,"invalid hex key value\n"); |
| 581 | goto end; |
| 582 | } |
| 583 | |
| 584 | if ((benc=BIO_new(BIO_f_cipher())) == NULL) |
| 585 | goto end; |
| 586 | |
| 587 | /* Since we may be changing parameters work on the encryption |
| 588 | * context rather than calling BIO_set_cipher(). |
| 589 | */ |
| 590 | |
| 591 | BIO_get_cipher_ctx(benc, &ctx); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 592 | if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) |
| 593 | { |
| 594 | BIO_printf(bio_err, "Error setting cipher %s\n", |
| 595 | EVP_CIPHER_name(cipher)); |
| 596 | ERR_print_errors(bio_err); |
| 597 | goto end; |
| 598 | } |
| 599 | |
| 600 | if (nopad) |
| 601 | EVP_CIPHER_CTX_set_padding(ctx, 0); |
| 602 | |
| 603 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) |
| 604 | { |
| 605 | BIO_printf(bio_err, "Error setting cipher %s\n", |
| 606 | EVP_CIPHER_name(cipher)); |
| 607 | ERR_print_errors(bio_err); |
| 608 | goto end; |
| 609 | } |
| 610 | |
| 611 | if (debug) |
| 612 | { |
| 613 | BIO_set_callback(benc,BIO_debug_callback); |
| 614 | BIO_set_callback_arg(benc,(char *)bio_err); |
| 615 | } |
| 616 | |
| 617 | if (printkey) |
| 618 | { |
| 619 | if (!nosalt) |
| 620 | { |
| 621 | printf("salt="); |
| 622 | for (i=0; i<(int)sizeof(salt); i++) |
| 623 | printf("%02X",salt[i]); |
| 624 | printf("\n"); |
| 625 | } |
| 626 | if (cipher->key_len > 0) |
| 627 | { |
| 628 | printf("key="); |
| 629 | for (i=0; i<cipher->key_len; i++) |
| 630 | printf("%02X",key[i]); |
| 631 | printf("\n"); |
| 632 | } |
| 633 | if (cipher->iv_len > 0) |
| 634 | { |
| 635 | printf("iv ="); |
| 636 | for (i=0; i<cipher->iv_len; i++) |
| 637 | printf("%02X",iv[i]); |
| 638 | printf("\n"); |
| 639 | } |
| 640 | if (printkey == 2) |
| 641 | { |
| 642 | ret=0; |
| 643 | goto end; |
| 644 | } |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | /* Only encrypt/decrypt as we write the file */ |
| 649 | if (benc != NULL) |
| 650 | wbio=BIO_push(benc,wbio); |
| 651 | |
| 652 | for (;;) |
| 653 | { |
| 654 | inl=BIO_read(rbio,(char *)buff,bsize); |
| 655 | if (inl <= 0) break; |
| 656 | if (BIO_write(wbio,(char *)buff,inl) != inl) |
| 657 | { |
| 658 | BIO_printf(bio_err,"error writing output file\n"); |
| 659 | goto end; |
| 660 | } |
| 661 | } |
| 662 | if (!BIO_flush(wbio)) |
| 663 | { |
| 664 | BIO_printf(bio_err,"bad decrypt\n"); |
| 665 | goto end; |
| 666 | } |
| 667 | |
| 668 | ret=0; |
| 669 | if (verbose) |
| 670 | { |
| 671 | BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in)); |
| 672 | BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out)); |
| 673 | } |
| 674 | end: |
| 675 | ERR_print_errors(bio_err); |
| 676 | if (strbuf != NULL) OPENSSL_free(strbuf); |
| 677 | if (buff != NULL) OPENSSL_free(buff); |
| 678 | if (in != NULL) BIO_free(in); |
| 679 | if (out != NULL) BIO_free_all(out); |
| 680 | if (benc != NULL) BIO_free(benc); |
| 681 | if (b64 != NULL) BIO_free(b64); |
| 682 | #ifdef ZLIB |
| 683 | if (bzl != NULL) BIO_free(bzl); |
| 684 | #endif |
| 685 | if(pass) OPENSSL_free(pass); |
| 686 | apps_shutdown(); |
| 687 | OPENSSL_EXIT(ret); |
| 688 | } |
| 689 | |
| 690 | int set_hex(char *in, unsigned char *out, int size) |
| 691 | { |
| 692 | int i,n; |
| 693 | unsigned char j; |
| 694 | |
| 695 | n=strlen(in); |
| 696 | if (n > (size*2)) |
| 697 | { |
| 698 | BIO_printf(bio_err,"hex string is too long\n"); |
| 699 | return(0); |
| 700 | } |
| 701 | memset(out,0,size); |
| 702 | for (i=0; i<n; i++) |
| 703 | { |
| 704 | j=(unsigned char)*in; |
| 705 | *(in++)='\0'; |
| 706 | if (j == 0) break; |
| 707 | if ((j >= '0') && (j <= '9')) |
| 708 | j-='0'; |
| 709 | else if ((j >= 'A') && (j <= 'F')) |
| 710 | j=j-'A'+10; |
| 711 | else if ((j >= 'a') && (j <= 'f')) |
| 712 | j=j-'a'+10; |
| 713 | else |
| 714 | { |
| 715 | BIO_printf(bio_err,"non-hex digit\n"); |
| 716 | return(0); |
| 717 | } |
| 718 | if (i&1) |
| 719 | out[i/2]|=j; |
| 720 | else |
| 721 | out[i/2]=(j<<4); |
| 722 | } |
| 723 | return(1); |
| 724 | } |