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d02b48c6 | 1 | /* apps/enc.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 8 | * |
d02b48c6 RE |
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). | |
0f113f3e | 15 | * |
d02b48c6 RE |
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. | |
0f113f3e | 22 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
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. | |
0f113f3e | 52 | * |
d02b48c6 RE |
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" | |
ec577822 BM |
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> | |
fd699ac5 | 68 | #include <openssl/rand.h> |
ec577822 | 69 | #include <openssl/pem.h> |
9494e99b | 70 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 71 | # include <openssl/comp.h> |
9494e99b | 72 | #endif |
646d5695 | 73 | #include <ctype.h> |
d02b48c6 | 74 | |
0f113f3e | 75 | int set_hex(char *in, unsigned char *out, int size); |
d02b48c6 RE |
76 | #undef SIZE |
77 | #undef BSIZE | |
78 | #undef PROG | |
79 | ||
0f113f3e MC |
80 | #define SIZE (512) |
81 | #define BSIZE (8*1024) | |
82 | #define PROG enc_main | |
d02b48c6 | 83 | |
0f113f3e MC |
84 | static void show_ciphers(const OBJ_NAME *name, void *bio_) |
85 | { | |
86 | BIO *bio = bio_; | |
87 | static int n; | |
646d5695 | 88 | |
0f113f3e MC |
89 | if (!islower((unsigned char)*name->name)) |
90 | return; | |
646d5695 | 91 | |
0f113f3e MC |
92 | BIO_printf(bio, "-%-25s", name->name); |
93 | if (++n == 3) { | |
94 | BIO_printf(bio, "\n"); | |
95 | n = 0; | |
96 | } else | |
97 | BIO_printf(bio, " "); | |
98 | } | |
646d5695 | 99 | |
667ac4ec RE |
100 | int MAIN(int, char **); |
101 | ||
6b691a5c | 102 | int MAIN(int argc, char **argv) |
0f113f3e MC |
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; | |
8931b30d | 117 | #ifdef ZLIB |
0f113f3e MC |
118 | int do_zlib = 0; |
119 | BIO *bzl = NULL; | |
8931b30d | 120 | #endif |
0f113f3e MC |
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 = | |
126 | NULL, *wbio = NULL; | |
dfee50ec | 127 | #define PROG_NAME_SIZE 39 |
0f113f3e | 128 | char pname[PROG_NAME_SIZE + 1]; |
0b13e9f0 | 129 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 130 | char *engine = NULL; |
0b13e9f0 | 131 | #endif |
0f113f3e MC |
132 | const EVP_MD *dgst = NULL; |
133 | int non_fips_allow = 0; | |
d02b48c6 | 134 | |
0f113f3e | 135 | apps_startup(); |
d02b48c6 | 136 | |
0f113f3e MC |
137 | if (bio_err == NULL) |
138 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
139 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); | |
d02b48c6 | 140 | |
0f113f3e MC |
141 | if (!load_config(bio_err, NULL)) |
142 | goto end; | |
3647bee2 | 143 | |
0f113f3e MC |
144 | /* first check the program name */ |
145 | program_name(argv[0], pname, sizeof pname); | |
146 | if (strcmp(pname, "base64") == 0) | |
147 | base64 = 1; | |
8931b30d | 148 | #ifdef ZLIB |
0f113f3e MC |
149 | if (strcmp(pname, "zlib") == 0) |
150 | do_zlib = 1; | |
8931b30d | 151 | #endif |
d02b48c6 | 152 | |
0f113f3e | 153 | cipher = EVP_get_cipherbyname(pname); |
8931b30d | 154 | #ifdef ZLIB |
0f113f3e MC |
155 | if (!do_zlib && !base64 && (cipher == NULL) |
156 | && (strcmp(pname, "enc") != 0)) | |
8931b30d | 157 | #else |
0f113f3e | 158 | if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0)) |
8931b30d | 159 | #endif |
0f113f3e MC |
160 | { |
161 | BIO_printf(bio_err, "%s is an unknown cipher\n", pname); | |
162 | goto bad; | |
163 | } | |
164 | ||
165 | argc--; | |
166 | argv++; | |
167 | while (argc >= 1) { | |
168 | if (strcmp(*argv, "-e") == 0) | |
169 | enc = 1; | |
170 | else if (strcmp(*argv, "-in") == 0) { | |
171 | if (--argc < 1) | |
172 | goto bad; | |
173 | inf = *(++argv); | |
174 | } else if (strcmp(*argv, "-out") == 0) { | |
175 | if (--argc < 1) | |
176 | goto bad; | |
177 | outf = *(++argv); | |
178 | } else if (strcmp(*argv, "-pass") == 0) { | |
179 | if (--argc < 1) | |
180 | goto bad; | |
181 | passarg = *(++argv); | |
182 | } | |
0b13e9f0 | 183 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
184 | else if (strcmp(*argv, "-engine") == 0) { |
185 | if (--argc < 1) | |
186 | goto bad; | |
187 | engine = *(++argv); | |
188 | } | |
0b13e9f0 | 189 | #endif |
0f113f3e MC |
190 | else if (strcmp(*argv, "-d") == 0) |
191 | enc = 0; | |
192 | else if (strcmp(*argv, "-p") == 0) | |
193 | printkey = 1; | |
194 | else if (strcmp(*argv, "-v") == 0) | |
195 | verbose = 1; | |
196 | else if (strcmp(*argv, "-nopad") == 0) | |
197 | nopad = 1; | |
198 | else if (strcmp(*argv, "-salt") == 0) | |
199 | nosalt = 0; | |
200 | else if (strcmp(*argv, "-nosalt") == 0) | |
201 | nosalt = 1; | |
202 | else if (strcmp(*argv, "-debug") == 0) | |
203 | debug = 1; | |
204 | else if (strcmp(*argv, "-P") == 0) | |
205 | printkey = 2; | |
206 | else if (strcmp(*argv, "-A") == 0) | |
207 | olb64 = 1; | |
208 | else if (strcmp(*argv, "-a") == 0) | |
209 | base64 = 1; | |
210 | else if (strcmp(*argv, "-base64") == 0) | |
211 | base64 = 1; | |
8931b30d | 212 | #ifdef ZLIB |
0f113f3e MC |
213 | else if (strcmp(*argv, "-z") == 0) |
214 | do_zlib = 1; | |
8931b30d | 215 | #endif |
0f113f3e MC |
216 | else if (strcmp(*argv, "-bufsize") == 0) { |
217 | if (--argc < 1) | |
218 | goto bad; | |
219 | bufsize = (unsigned char *)*(++argv); | |
220 | } else if (strcmp(*argv, "-k") == 0) { | |
221 | if (--argc < 1) | |
222 | goto bad; | |
223 | str = *(++argv); | |
224 | } else if (strcmp(*argv, "-kfile") == 0) { | |
225 | static char buf[128]; | |
226 | FILE *infile; | |
227 | char *file; | |
228 | ||
229 | if (--argc < 1) | |
230 | goto bad; | |
231 | file = *(++argv); | |
232 | infile = fopen(file, "r"); | |
233 | if (infile == NULL) { | |
234 | BIO_printf(bio_err, "unable to read key from '%s'\n", file); | |
235 | goto bad; | |
236 | } | |
237 | buf[0] = '\0'; | |
238 | if (!fgets(buf, sizeof buf, infile)) { | |
239 | BIO_printf(bio_err, "unable to read key from '%s'\n", file); | |
240 | goto bad; | |
241 | } | |
242 | fclose(infile); | |
243 | i = strlen(buf); | |
244 | if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r'))) | |
245 | buf[--i] = '\0'; | |
246 | if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r'))) | |
247 | buf[--i] = '\0'; | |
248 | if (i < 1) { | |
249 | BIO_printf(bio_err, "zero length password\n"); | |
250 | goto bad; | |
251 | } | |
252 | str = buf; | |
253 | } else if (strcmp(*argv, "-K") == 0) { | |
254 | if (--argc < 1) | |
255 | goto bad; | |
256 | hkey = *(++argv); | |
257 | } else if (strcmp(*argv, "-S") == 0) { | |
258 | if (--argc < 1) | |
259 | goto bad; | |
260 | hsalt = *(++argv); | |
261 | } else if (strcmp(*argv, "-iv") == 0) { | |
262 | if (--argc < 1) | |
263 | goto bad; | |
264 | hiv = *(++argv); | |
265 | } else if (strcmp(*argv, "-md") == 0) { | |
266 | if (--argc < 1) | |
267 | goto bad; | |
268 | md = *(++argv); | |
269 | } else if (strcmp(*argv, "-non-fips-allow") == 0) | |
270 | non_fips_allow = 1; | |
271 | else if ((argv[0][0] == '-') && | |
272 | ((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) { | |
273 | cipher = c; | |
274 | } else if (strcmp(*argv, "-none") == 0) | |
275 | cipher = NULL; | |
276 | else { | |
277 | BIO_printf(bio_err, "unknown option '%s'\n", *argv); | |
278 | bad: | |
279 | BIO_printf(bio_err, "options are\n"); | |
280 | BIO_printf(bio_err, "%-14s input file\n", "-in <file>"); | |
281 | BIO_printf(bio_err, "%-14s output file\n", "-out <file>"); | |
282 | BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>"); | |
283 | BIO_printf(bio_err, "%-14s encrypt\n", "-e"); | |
284 | BIO_printf(bio_err, "%-14s decrypt\n", "-d"); | |
285 | BIO_printf(bio_err, | |
286 | "%-14s base64 encode/decode, depending on encryption flag\n", | |
287 | "-a/-base64"); | |
288 | BIO_printf(bio_err, "%-14s passphrase is the next argument\n", | |
289 | "-k"); | |
290 | BIO_printf(bio_err, | |
291 | "%-14s passphrase is the first line of the file argument\n", | |
292 | "-kfile"); | |
293 | BIO_printf(bio_err, | |
294 | "%-14s the next argument is the md to use to create a key\n", | |
295 | "-md"); | |
296 | BIO_printf(bio_err, | |
297 | "%-14s from a passphrase. One of md2, md5, sha or sha1\n", | |
298 | ""); | |
299 | BIO_printf(bio_err, "%-14s salt in hex is the next argument\n", | |
300 | "-S"); | |
301 | BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n", | |
302 | "-K/-iv"); | |
303 | BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n", | |
304 | "-[pP]"); | |
305 | BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>"); | |
306 | BIO_printf(bio_err, "%-14s disable standard block padding\n", | |
307 | "-nopad"); | |
0b13e9f0 | 308 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
309 | BIO_printf(bio_err, |
310 | "%-14s use engine e, possibly a hardware device.\n", | |
311 | "-engine e"); | |
0b13e9f0 | 312 | #endif |
d02b48c6 | 313 | |
0f113f3e MC |
314 | BIO_printf(bio_err, "Cipher Types\n"); |
315 | OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, | |
316 | show_ciphers, bio_err); | |
317 | BIO_printf(bio_err, "\n"); | |
d02b48c6 | 318 | |
0f113f3e MC |
319 | goto end; |
320 | } | |
321 | argc--; | |
322 | argv++; | |
323 | } | |
d02b48c6 | 324 | |
0b13e9f0 | 325 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 326 | setup_engine(bio_err, engine, 0); |
0b13e9f0 | 327 | #endif |
5270e702 | 328 | |
0f113f3e MC |
329 | if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { |
330 | BIO_printf(bio_err, | |
331 | "AEAD ciphers not supported by the enc utility\n"); | |
332 | goto end; | |
333 | } | |
334 | ||
335 | if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) { | |
336 | BIO_printf(bio_err, | |
337 | "Ciphers in XTS mode are not supported by the enc utility\n"); | |
338 | goto end; | |
339 | } | |
340 | ||
341 | if (md && (dgst = EVP_get_digestbyname(md)) == NULL) { | |
342 | BIO_printf(bio_err, "%s is an unsupported message digest type\n", md); | |
343 | goto end; | |
344 | } | |
345 | ||
346 | if (dgst == NULL) { | |
347 | dgst = EVP_md5(); | |
348 | } | |
349 | ||
350 | if (bufsize != NULL) { | |
351 | unsigned long n; | |
352 | ||
353 | for (n = 0; *bufsize; bufsize++) { | |
354 | i = *bufsize; | |
355 | if ((i <= '9') && (i >= '0')) | |
356 | n = n * 10 + i - '0'; | |
357 | else if (i == 'k') { | |
358 | n *= 1024; | |
359 | bufsize++; | |
360 | break; | |
361 | } | |
362 | } | |
363 | if (*bufsize != '\0') { | |
364 | BIO_printf(bio_err, "invalid 'bufsize' specified.\n"); | |
365 | goto end; | |
366 | } | |
367 | ||
368 | /* It must be large enough for a base64 encoded line */ | |
369 | if (base64 && n < 80) | |
370 | n = 80; | |
371 | ||
372 | bsize = (int)n; | |
373 | if (verbose) | |
374 | BIO_printf(bio_err, "bufsize=%d\n", bsize); | |
375 | } | |
376 | ||
377 | strbuf = OPENSSL_malloc(SIZE); | |
378 | buff = (unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize)); | |
379 | if ((buff == NULL) || (strbuf == NULL)) { | |
380 | BIO_printf(bio_err, "OPENSSL_malloc failure %ld\n", | |
381 | (long)EVP_ENCODE_LENGTH(bsize)); | |
382 | goto end; | |
383 | } | |
384 | ||
385 | in = BIO_new(BIO_s_file()); | |
386 | out = BIO_new(BIO_s_file()); | |
387 | if ((in == NULL) || (out == NULL)) { | |
388 | ERR_print_errors(bio_err); | |
389 | goto end; | |
390 | } | |
391 | if (debug) { | |
392 | BIO_set_callback(in, BIO_debug_callback); | |
393 | BIO_set_callback(out, BIO_debug_callback); | |
394 | BIO_set_callback_arg(in, (char *)bio_err); | |
395 | BIO_set_callback_arg(out, (char *)bio_err); | |
396 | } | |
397 | ||
398 | if (inf == NULL) { | |
0f113f3e | 399 | if (bufsize != NULL) |
27c7609c | 400 | setbuf(stdin, NULL); |
0f113f3e MC |
401 | BIO_set_fp(in, stdin, BIO_NOCLOSE); |
402 | } else { | |
403 | if (BIO_read_filename(in, inf) <= 0) { | |
404 | perror(inf); | |
405 | goto end; | |
406 | } | |
407 | } | |
408 | ||
409 | if (!str && passarg) { | |
410 | if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) { | |
411 | BIO_printf(bio_err, "Error getting password\n"); | |
412 | goto end; | |
413 | } | |
414 | str = pass; | |
415 | } | |
416 | ||
417 | if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) { | |
418 | for (;;) { | |
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 | if (strbuf[0] == '\0') { | |
428 | ret = 1; | |
429 | goto end; | |
430 | } | |
431 | str = strbuf; | |
432 | break; | |
433 | } | |
434 | if (i < 0) { | |
435 | BIO_printf(bio_err, "bad password read\n"); | |
436 | goto end; | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
441 | if (outf == NULL) { | |
442 | BIO_set_fp(out, stdout, BIO_NOCLOSE); | |
0f113f3e | 443 | if (bufsize != NULL) |
27c7609c | 444 | setbuf(stdin, NULL); /* don't do buffered reads */ |
bc36ee62 | 445 | #ifdef OPENSSL_SYS_VMS |
0f113f3e MC |
446 | { |
447 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
448 | out = BIO_push(tmpbio, out); | |
449 | } | |
645749ef | 450 | #endif |
0f113f3e MC |
451 | } else { |
452 | if (BIO_write_filename(out, outf) <= 0) { | |
453 | perror(outf); | |
454 | goto end; | |
455 | } | |
456 | } | |
457 | ||
458 | rbio = in; | |
459 | wbio = out; | |
fd699ac5 | 460 | |
8931b30d DSH |
461 | #ifdef ZLIB |
462 | ||
0f113f3e MC |
463 | if (do_zlib) { |
464 | if ((bzl = BIO_new(BIO_f_zlib())) == NULL) | |
465 | goto end; | |
466 | if (enc) | |
467 | wbio = BIO_push(bzl, wbio); | |
468 | else | |
469 | rbio = BIO_push(bzl, rbio); | |
470 | } | |
8931b30d DSH |
471 | #endif |
472 | ||
0f113f3e MC |
473 | if (base64) { |
474 | if ((b64 = BIO_new(BIO_f_base64())) == NULL) | |
475 | goto end; | |
476 | if (debug) { | |
477 | BIO_set_callback(b64, BIO_debug_callback); | |
478 | BIO_set_callback_arg(b64, (char *)bio_err); | |
479 | } | |
480 | if (olb64) | |
481 | BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); | |
482 | if (enc) | |
483 | wbio = BIO_push(b64, wbio); | |
484 | else | |
485 | rbio = BIO_push(b64, rbio); | |
486 | } | |
487 | ||
488 | if (cipher != NULL) { | |
489 | /* | |
490 | * Note that str is NULL if a key was passed on the command line, so | |
491 | * we get no salt in that case. Is this a bug? | |
492 | */ | |
493 | if (str != NULL) { | |
494 | /* | |
495 | * Salt handling: if encrypting generate a salt and write to | |
496 | * output BIO. If decrypting read salt from input BIO. | |
497 | */ | |
498 | unsigned char *sptr; | |
499 | if (nosalt) | |
500 | sptr = NULL; | |
501 | else { | |
502 | if (enc) { | |
503 | if (hsalt) { | |
504 | if (!set_hex(hsalt, salt, sizeof salt)) { | |
505 | BIO_printf(bio_err, "invalid hex salt value\n"); | |
506 | goto end; | |
507 | } | |
266483d2 | 508 | } else if (RAND_bytes(salt, sizeof salt) <= 0) |
0f113f3e MC |
509 | goto end; |
510 | /* | |
511 | * If -P option then don't bother writing | |
512 | */ | |
513 | if ((printkey != 2) | |
514 | && (BIO_write(wbio, magic, | |
515 | sizeof magic - 1) != sizeof magic - 1 | |
516 | || BIO_write(wbio, | |
517 | (char *)salt, | |
518 | sizeof salt) != sizeof salt)) { | |
519 | BIO_printf(bio_err, "error writing output file\n"); | |
520 | goto end; | |
521 | } | |
522 | } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf | |
523 | || BIO_read(rbio, | |
524 | (unsigned char *)salt, | |
525 | sizeof salt) != sizeof salt) { | |
526 | BIO_printf(bio_err, "error reading input file\n"); | |
527 | goto end; | |
528 | } else if (memcmp(mbuf, magic, sizeof magic - 1)) { | |
529 | BIO_printf(bio_err, "bad magic number\n"); | |
530 | goto end; | |
531 | } | |
532 | ||
533 | sptr = salt; | |
534 | } | |
535 | ||
536 | if (!EVP_BytesToKey(cipher, dgst, sptr, | |
537 | (unsigned char *)str, | |
538 | strlen(str), 1, key, iv)) { | |
539 | BIO_printf(bio_err, "EVP_BytesToKey failed\n"); | |
540 | goto end; | |
541 | } | |
542 | /* | |
543 | * zero the complete buffer or the string passed from the command | |
544 | * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu> | |
545 | */ | |
546 | if (str == strbuf) | |
547 | OPENSSL_cleanse(str, SIZE); | |
548 | else | |
549 | OPENSSL_cleanse(str, strlen(str)); | |
550 | } | |
551 | if ((hiv != NULL) && !set_hex(hiv, iv, sizeof iv)) { | |
552 | BIO_printf(bio_err, "invalid hex iv value\n"); | |
553 | goto end; | |
554 | } | |
555 | if ((hiv == NULL) && (str == NULL) | |
556 | && EVP_CIPHER_iv_length(cipher) != 0) { | |
557 | /* | |
558 | * No IV was explicitly set and no IV was generated during | |
559 | * EVP_BytesToKey. Hence the IV is undefined, making correct | |
560 | * decryption impossible. | |
561 | */ | |
562 | BIO_printf(bio_err, "iv undefined\n"); | |
563 | goto end; | |
564 | } | |
565 | if ((hkey != NULL) && !set_hex(hkey, key, sizeof key)) { | |
566 | BIO_printf(bio_err, "invalid hex key value\n"); | |
567 | goto end; | |
568 | } | |
569 | ||
570 | if ((benc = BIO_new(BIO_f_cipher())) == NULL) | |
571 | goto end; | |
572 | ||
573 | /* | |
574 | * Since we may be changing parameters work on the encryption context | |
575 | * rather than calling BIO_set_cipher(). | |
576 | */ | |
577 | ||
578 | BIO_get_cipher_ctx(benc, &ctx); | |
579 | ||
580 | if (non_fips_allow) | |
581 | EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW); | |
582 | ||
583 | if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) { | |
584 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
585 | EVP_CIPHER_name(cipher)); | |
586 | ERR_print_errors(bio_err); | |
587 | goto end; | |
588 | } | |
589 | ||
590 | if (nopad) | |
591 | EVP_CIPHER_CTX_set_padding(ctx, 0); | |
592 | ||
593 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) { | |
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 (debug) { | |
601 | BIO_set_callback(benc, BIO_debug_callback); | |
602 | BIO_set_callback_arg(benc, (char *)bio_err); | |
603 | } | |
604 | ||
605 | if (printkey) { | |
606 | if (!nosalt) { | |
607 | printf("salt="); | |
608 | for (i = 0; i < (int)sizeof(salt); i++) | |
609 | printf("%02X", salt[i]); | |
610 | printf("\n"); | |
611 | } | |
612 | if (cipher->key_len > 0) { | |
613 | printf("key="); | |
614 | for (i = 0; i < cipher->key_len; i++) | |
615 | printf("%02X", key[i]); | |
616 | printf("\n"); | |
617 | } | |
618 | if (cipher->iv_len > 0) { | |
619 | printf("iv ="); | |
620 | for (i = 0; i < cipher->iv_len; i++) | |
621 | printf("%02X", iv[i]); | |
622 | printf("\n"); | |
623 | } | |
624 | if (printkey == 2) { | |
625 | ret = 0; | |
626 | goto end; | |
627 | } | |
628 | } | |
629 | } | |
630 | ||
631 | /* Only encrypt/decrypt as we write the file */ | |
632 | if (benc != NULL) | |
633 | wbio = BIO_push(benc, wbio); | |
634 | ||
635 | for (;;) { | |
636 | inl = BIO_read(rbio, (char *)buff, bsize); | |
637 | if (inl <= 0) | |
638 | break; | |
639 | if (BIO_write(wbio, (char *)buff, inl) != inl) { | |
640 | BIO_printf(bio_err, "error writing output file\n"); | |
641 | goto end; | |
642 | } | |
643 | } | |
644 | if (!BIO_flush(wbio)) { | |
645 | BIO_printf(bio_err, "bad decrypt\n"); | |
646 | goto end; | |
647 | } | |
648 | ||
649 | ret = 0; | |
650 | if (verbose) { | |
651 | BIO_printf(bio_err, "bytes read :%8ld\n", BIO_number_read(in)); | |
652 | BIO_printf(bio_err, "bytes written:%8ld\n", BIO_number_written(out)); | |
653 | } | |
654 | end: | |
655 | ERR_print_errors(bio_err); | |
656 | if (strbuf != NULL) | |
657 | OPENSSL_free(strbuf); | |
658 | if (buff != NULL) | |
659 | OPENSSL_free(buff); | |
660 | if (in != NULL) | |
661 | BIO_free(in); | |
662 | if (out != NULL) | |
663 | BIO_free_all(out); | |
664 | if (benc != NULL) | |
665 | BIO_free(benc); | |
666 | if (b64 != NULL) | |
667 | BIO_free(b64); | |
8931b30d | 668 | #ifdef ZLIB |
0f113f3e MC |
669 | if (bzl != NULL) |
670 | BIO_free(bzl); | |
8931b30d | 671 | #endif |
0f113f3e MC |
672 | if (pass) |
673 | OPENSSL_free(pass); | |
674 | apps_shutdown(); | |
675 | OPENSSL_EXIT(ret); | |
676 | } | |
d02b48c6 | 677 | |
6b691a5c | 678 | int set_hex(char *in, unsigned char *out, int size) |
0f113f3e MC |
679 | { |
680 | int i, n; | |
681 | unsigned char j; | |
682 | ||
683 | n = strlen(in); | |
684 | if (n > (size * 2)) { | |
685 | BIO_printf(bio_err, "hex string is too long\n"); | |
686 | return (0); | |
687 | } | |
688 | memset(out, 0, size); | |
689 | for (i = 0; i < n; i++) { | |
690 | j = (unsigned char)*in; | |
691 | *(in++) = '\0'; | |
692 | if (j == 0) | |
693 | break; | |
694 | if ((j >= '0') && (j <= '9')) | |
695 | j -= '0'; | |
696 | else if ((j >= 'A') && (j <= 'F')) | |
697 | j = j - 'A' + 10; | |
698 | else if ((j >= 'a') && (j <= 'f')) | |
699 | j = j - 'a' + 10; | |
700 | else { | |
701 | BIO_printf(bio_err, "non-hex digit\n"); | |
702 | return (0); | |
703 | } | |
704 | if (i & 1) | |
705 | out[i / 2] |= j; | |
706 | else | |
707 | out[i / 2] = (j << 4); | |
708 | } | |
709 | return (1); | |
710 | } |