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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
d02b48c6 RE |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
d02b48c6 RE |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
57 | ||
58 | #include <stdio.h> | |
59 | #include <stdlib.h> | |
60 | #include <string.h> | |
bd4850df | 61 | #include <limits.h> |
d02b48c6 | 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 | |
d02b48c6 RE |
75 | #undef SIZE |
76 | #undef BSIZE | |
0f113f3e MC |
77 | #define SIZE (512) |
78 | #define BSIZE (8*1024) | |
646d5695 | 79 | |
7e1b7485 RS |
80 | static int set_hex(char *in, unsigned char *out, int size); |
81 | static void show_ciphers(const OBJ_NAME *name, void *bio_); | |
82 | ||
83 | typedef enum OPTION_choice { | |
84 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
85 | OPT_E, OPT_IN, OPT_OUT, OPT_PASS, OPT_ENGINE, OPT_D, OPT_P, OPT_V, | |
86 | OPT_NOPAD, OPT_SALT, OPT_NOSALT, OPT_DEBUG, OPT_UPPER_P, OPT_UPPER_A, | |
87 | OPT_A, OPT_Z, OPT_BUFSIZE, OPT_K, OPT_KFILE, OPT_UPPER_K, OPT_NONE, | |
700b4a4a | 88 | OPT_UPPER_S, OPT_IV, OPT_MD, OPT_CIPHER |
7e1b7485 RS |
89 | } OPTION_CHOICE; |
90 | ||
91 | OPTIONS enc_options[] = { | |
92 | {"help", OPT_HELP, '-', "Display this summary"}, | |
93 | {"in", OPT_IN, '<', "Input file"}, | |
94 | {"out", OPT_OUT, '>', "Output file"}, | |
95 | {"pass", OPT_PASS, 's', "Passphrase source"}, | |
7e1b7485 RS |
96 | {"e", OPT_E, '-', "Encrypt"}, |
97 | {"d", OPT_D, '-', "Decrypt"}, | |
98 | {"p", OPT_P, '-', "Print the iv/key"}, | |
99 | {"P", OPT_UPPER_P, '-', "Print the iv/key and exit"}, | |
9a13bb38 | 100 | {"v", OPT_V, '-', "Verbose output"}, |
7e1b7485 | 101 | {"nopad", OPT_NOPAD, '-', "Disable standard block padding"}, |
9a13bb38 RS |
102 | {"salt", OPT_SALT, '-', "Use salt in the KDF (default)"}, |
103 | {"nosalt", OPT_NOSALT, '-', "Do not use salt in the KDF"}, | |
104 | {"debug", OPT_DEBUG, '-', "Print debug info"}, | |
105 | {"a", OPT_A, '-', "Base64 encode/decode, depending on encryption flag"}, | |
106 | {"base64", OPT_A, '-', "Same as option -a"}, | |
107 | {"A", OPT_UPPER_A, '-', | |
108 | "Used with -[base64|a] to specify base64 buffer as a single line"}, | |
7e1b7485 RS |
109 | {"bufsize", OPT_BUFSIZE, 's', "Buffer size"}, |
110 | {"k", OPT_K, 's', "Passphrase"}, | |
111 | {"kfile", OPT_KFILE, '<', "Fead passphrase from file"}, | |
b256f717 | 112 | {"K", OPT_UPPER_K, 's', "Raw key, in hex"}, |
7e1b7485 RS |
113 | {"S", OPT_UPPER_S, 's', "Salt, in hex"}, |
114 | {"iv", OPT_IV, 's', "IV in hex"}, | |
115 | {"md", OPT_MD, 's', "Use specified digest to create key from passphrase"}, | |
7e1b7485 RS |
116 | {"none", OPT_NONE, '-', "Don't encrypt"}, |
117 | {"", OPT_CIPHER, '-', "Any supported cipher"}, | |
9c3bcfa0 RS |
118 | #ifdef ZLIB |
119 | {"z", OPT_Z, '-', "Use zlib as the 'encryption'"}, | |
120 | #endif | |
121 | #ifndef OPENSSL_NO_ENGINE | |
122 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
123 | #endif | |
7e1b7485 RS |
124 | {NULL} |
125 | }; | |
126 | ||
127 | int enc_main(int argc, char **argv) | |
0f113f3e | 128 | { |
7e1b7485 | 129 | static char buf[128]; |
0f113f3e | 130 | static const char magic[] = "Salted__"; |
7e1b7485 RS |
131 | BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio = |
132 | NULL, *wbio = NULL; | |
133 | EVP_CIPHER_CTX *ctx = NULL; | |
134 | const EVP_CIPHER *cipher = NULL, *c; | |
135 | const EVP_MD *dgst = NULL; | |
333b070e | 136 | char *hkey = NULL, *hiv = NULL, *hsalt = NULL, *p; |
7e1b7485 RS |
137 | char *infile = NULL, *outfile = NULL, *prog; |
138 | char *str = NULL, *passarg = NULL, *pass = NULL, *strbuf = NULL; | |
0f113f3e | 139 | char mbuf[sizeof magic - 1]; |
7e1b7485 RS |
140 | OPTION_CHOICE o; |
141 | int bsize = BSIZE, verbose = 0, debug = 0, olb64 = 0, nosalt = 0; | |
5f62e044 RL |
142 | int enc = 1, printkey = 0, i, k; |
143 | int base64 = 0, informat = FORMAT_BINARY, outformat = FORMAT_BINARY; | |
700b4a4a | 144 | int ret = 1, inl, nopad = 0; |
0f113f3e | 145 | unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; |
7e1b7485 | 146 | unsigned char *buff = NULL, salt[PKCS5_SALT_LEN]; |
bd4850df | 147 | long n; |
8931b30d | 148 | #ifdef ZLIB |
0f113f3e MC |
149 | int do_zlib = 0; |
150 | BIO *bzl = NULL; | |
8931b30d | 151 | #endif |
3647bee2 | 152 | |
0f113f3e | 153 | /* first check the program name */ |
7e1b7485 RS |
154 | prog = opt_progname(argv[0]); |
155 | if (strcmp(prog, "base64") == 0) | |
5f62e044 | 156 | base64 = 1; |
8931b30d | 157 | #ifdef ZLIB |
7e1b7485 | 158 | else if (strcmp(prog, "zlib") == 0) |
0f113f3e | 159 | do_zlib = 1; |
8931b30d | 160 | #endif |
7e1b7485 RS |
161 | else { |
162 | cipher = EVP_get_cipherbyname(prog); | |
163 | if (cipher == NULL && strcmp(prog, "enc") != 0) { | |
164 | BIO_printf(bio_err, "%s is not a known cipher\n", prog); | |
165 | goto end; | |
166 | } | |
0f113f3e MC |
167 | } |
168 | ||
7e1b7485 RS |
169 | prog = opt_init(argc, argv, enc_options); |
170 | while ((o = opt_next()) != OPT_EOF) { | |
171 | switch (o) { | |
172 | case OPT_EOF: | |
173 | case OPT_ERR: | |
174 | opthelp: | |
175 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
176 | goto end; | |
177 | case OPT_HELP: | |
178 | opt_help(enc_options); | |
179 | ret = 0; | |
180 | BIO_printf(bio_err, "Cipher Types\n"); | |
181 | OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, | |
182 | show_ciphers, bio_err); | |
183 | BIO_printf(bio_err, "\n"); | |
184 | goto end; | |
185 | case OPT_E: | |
0f113f3e | 186 | enc = 1; |
7e1b7485 RS |
187 | break; |
188 | case OPT_IN: | |
189 | infile = opt_arg(); | |
190 | break; | |
191 | case OPT_OUT: | |
192 | outfile = opt_arg(); | |
193 | break; | |
194 | case OPT_PASS: | |
195 | passarg = opt_arg(); | |
196 | break; | |
197 | case OPT_ENGINE: | |
333b070e | 198 | (void)setup_engine(opt_arg(), 0); |
7e1b7485 RS |
199 | break; |
200 | case OPT_D: | |
0f113f3e | 201 | enc = 0; |
7e1b7485 RS |
202 | break; |
203 | case OPT_P: | |
0f113f3e | 204 | printkey = 1; |
7e1b7485 RS |
205 | break; |
206 | case OPT_V: | |
0f113f3e | 207 | verbose = 1; |
7e1b7485 RS |
208 | break; |
209 | case OPT_NOPAD: | |
0f113f3e | 210 | nopad = 1; |
7e1b7485 RS |
211 | break; |
212 | case OPT_SALT: | |
0f113f3e | 213 | nosalt = 0; |
7e1b7485 RS |
214 | break; |
215 | case OPT_NOSALT: | |
0f113f3e | 216 | nosalt = 1; |
7e1b7485 RS |
217 | break; |
218 | case OPT_DEBUG: | |
0f113f3e | 219 | debug = 1; |
7e1b7485 RS |
220 | break; |
221 | case OPT_UPPER_P: | |
0f113f3e | 222 | printkey = 2; |
7e1b7485 RS |
223 | break; |
224 | case OPT_UPPER_A: | |
0f113f3e | 225 | olb64 = 1; |
7e1b7485 RS |
226 | break; |
227 | case OPT_A: | |
5f62e044 | 228 | base64 = 1; |
7e1b7485 RS |
229 | break; |
230 | case OPT_Z: | |
8931b30d | 231 | #ifdef ZLIB |
0f113f3e | 232 | do_zlib = 1; |
8931b30d | 233 | #endif |
7e1b7485 RS |
234 | break; |
235 | case OPT_BUFSIZE: | |
236 | p = opt_arg(); | |
237 | i = (int)strlen(p) - 1; | |
238 | k = i >= 1 && p[i] == 'k'; | |
239 | if (k) | |
240 | p[i] = '\0'; | |
bd4850df RS |
241 | if (!opt_long(opt_arg(), &n) |
242 | || n < 0 || (k && n >= LONG_MAX / 1024)) | |
7e1b7485 RS |
243 | goto opthelp; |
244 | if (k) | |
245 | n *= 1024; | |
246 | bsize = (int)n; | |
247 | break; | |
248 | case OPT_K: | |
249 | str = opt_arg(); | |
250 | break; | |
251 | case OPT_KFILE: | |
bdd58d98 | 252 | in = bio_open_default(opt_arg(), 'r', FORMAT_TEXT); |
7e1b7485 RS |
253 | if (in == NULL) |
254 | goto opthelp; | |
255 | i = BIO_gets(in, buf, sizeof buf); | |
256 | BIO_free(in); | |
257 | in = NULL; | |
258 | if (i <= 0) { | |
259 | BIO_printf(bio_err, | |
260 | "%s Can't read key from %s\n", prog, opt_arg()); | |
261 | goto opthelp; | |
0f113f3e | 262 | } |
7e1b7485 RS |
263 | while (--i > 0 && (buf[i] == '\r' || buf[i] == '\n')) |
264 | buf[i] = '\0'; | |
265 | if (i <= 0) { | |
266 | BIO_printf(bio_err, "%s: zero length password\n", prog); | |
267 | goto opthelp; | |
0f113f3e MC |
268 | } |
269 | str = buf; | |
7e1b7485 RS |
270 | break; |
271 | case OPT_UPPER_K: | |
272 | hkey = opt_arg(); | |
273 | break; | |
274 | case OPT_UPPER_S: | |
275 | hsalt = opt_arg(); | |
276 | break; | |
277 | case OPT_IV: | |
278 | hiv = opt_arg(); | |
279 | break; | |
280 | case OPT_MD: | |
281 | if (!opt_md(opt_arg(), &dgst)) | |
282 | goto opthelp; | |
283 | break; | |
7e1b7485 RS |
284 | case OPT_CIPHER: |
285 | if (!opt_cipher(opt_unknown(), &c)) | |
286 | goto opthelp; | |
0f113f3e | 287 | cipher = c; |
7e1b7485 RS |
288 | break; |
289 | case OPT_NONE: | |
0f113f3e | 290 | cipher = NULL; |
7e1b7485 | 291 | break; |
0f113f3e | 292 | } |
0f113f3e | 293 | } |
7e1b7485 RS |
294 | argc = opt_num_rest(); |
295 | argv = opt_rest(); | |
d02b48c6 | 296 | |
0f113f3e | 297 | if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { |
7e1b7485 | 298 | BIO_printf(bio_err, "%s: AEAD ciphers not supported\n", prog); |
0f113f3e MC |
299 | goto end; |
300 | } | |
301 | ||
302 | if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) { | |
7e1b7485 | 303 | BIO_printf(bio_err, "%s XTS ciphers not supported\n", prog); |
0f113f3e MC |
304 | goto end; |
305 | } | |
306 | ||
7e1b7485 | 307 | if (dgst == NULL) |
f8547f62 | 308 | dgst = EVP_sha256(); |
0f113f3e | 309 | |
7e1b7485 | 310 | /* It must be large enough for a base64 encoded line */ |
5f62e044 | 311 | if (base64 && bsize < 80) |
7e1b7485 RS |
312 | bsize = 80; |
313 | if (verbose) | |
314 | BIO_printf(bio_err, "bufsize=%d\n", bsize); | |
0f113f3e | 315 | |
5f62e044 RL |
316 | if (base64) { |
317 | if (enc) | |
318 | outformat = FORMAT_BASE64; | |
319 | else | |
320 | informat = FORMAT_BASE64; | |
321 | } | |
322 | ||
68dc6824 RS |
323 | strbuf = app_malloc(SIZE, "strbuf"); |
324 | buff = app_malloc(EVP_ENCODE_LENGTH(bsize), "evp buffer"); | |
0f113f3e | 325 | |
7e1b7485 RS |
326 | if (infile == NULL) { |
327 | unbuffer(stdin); | |
5f62e044 | 328 | in = dup_bio_in(informat); |
7e1b7485 | 329 | } else |
5f62e044 | 330 | in = bio_open_default(infile, 'r', informat); |
7e1b7485 RS |
331 | if (in == NULL) |
332 | goto end; | |
0f113f3e MC |
333 | |
334 | if (!str && passarg) { | |
7e1b7485 | 335 | if (!app_passwd(passarg, NULL, &pass, NULL)) { |
0f113f3e MC |
336 | BIO_printf(bio_err, "Error getting password\n"); |
337 | goto end; | |
338 | } | |
339 | str = pass; | |
340 | } | |
341 | ||
342 | if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) { | |
923b1857 RL |
343 | if (1) { |
344 | #ifndef OPENSSL_NO_UI | |
345 | for (;;) { | |
346 | char prompt[200]; | |
0f113f3e | 347 | |
923b1857 RL |
348 | BIO_snprintf(prompt, sizeof prompt, "enter %s %s password:", |
349 | OBJ_nid2ln(EVP_CIPHER_nid(cipher)), | |
350 | (enc) ? "encryption" : "decryption"); | |
351 | strbuf[0] = '\0'; | |
352 | i = EVP_read_pw_string((char *)strbuf, SIZE, prompt, enc); | |
353 | if (i == 0) { | |
354 | if (strbuf[0] == '\0') { | |
355 | ret = 1; | |
356 | goto end; | |
357 | } | |
358 | str = strbuf; | |
359 | break; | |
360 | } | |
361 | if (i < 0) { | |
362 | BIO_printf(bio_err, "bad password read\n"); | |
0f113f3e MC |
363 | goto end; |
364 | } | |
0f113f3e | 365 | } |
923b1857 RL |
366 | } else { |
367 | #endif | |
368 | BIO_printf(bio_err, "password required\n"); | |
369 | goto end; | |
0f113f3e MC |
370 | } |
371 | } | |
372 | ||
5f62e044 | 373 | out = bio_open_default(outfile, 'w', outformat); |
7e1b7485 RS |
374 | if (out == NULL) |
375 | goto end; | |
0f113f3e | 376 | |
7a82f778 RL |
377 | if (debug) { |
378 | BIO_set_callback(in, BIO_debug_callback); | |
379 | BIO_set_callback(out, BIO_debug_callback); | |
380 | BIO_set_callback_arg(in, (char *)bio_err); | |
381 | BIO_set_callback_arg(out, (char *)bio_err); | |
382 | } | |
383 | ||
0f113f3e MC |
384 | rbio = in; |
385 | wbio = out; | |
fd699ac5 | 386 | |
8931b30d | 387 | #ifdef ZLIB |
0f113f3e MC |
388 | if (do_zlib) { |
389 | if ((bzl = BIO_new(BIO_f_zlib())) == NULL) | |
390 | goto end; | |
7a82f778 RL |
391 | if (debug) { |
392 | BIO_set_callback(bzl, BIO_debug_callback); | |
393 | BIO_set_callback_arg(bzl, (char *)bio_err); | |
394 | } | |
0f113f3e MC |
395 | if (enc) |
396 | wbio = BIO_push(bzl, wbio); | |
397 | else | |
398 | rbio = BIO_push(bzl, rbio); | |
399 | } | |
8931b30d DSH |
400 | #endif |
401 | ||
5f62e044 | 402 | if (base64) { |
0f113f3e MC |
403 | if ((b64 = BIO_new(BIO_f_base64())) == NULL) |
404 | goto end; | |
405 | if (debug) { | |
406 | BIO_set_callback(b64, BIO_debug_callback); | |
407 | BIO_set_callback_arg(b64, (char *)bio_err); | |
408 | } | |
409 | if (olb64) | |
410 | BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); | |
411 | if (enc) | |
412 | wbio = BIO_push(b64, wbio); | |
413 | else | |
414 | rbio = BIO_push(b64, rbio); | |
415 | } | |
416 | ||
417 | if (cipher != NULL) { | |
418 | /* | |
419 | * Note that str is NULL if a key was passed on the command line, so | |
420 | * we get no salt in that case. Is this a bug? | |
421 | */ | |
422 | if (str != NULL) { | |
423 | /* | |
424 | * Salt handling: if encrypting generate a salt and write to | |
425 | * output BIO. If decrypting read salt from input BIO. | |
426 | */ | |
427 | unsigned char *sptr; | |
428 | if (nosalt) | |
429 | sptr = NULL; | |
430 | else { | |
431 | if (enc) { | |
432 | if (hsalt) { | |
433 | if (!set_hex(hsalt, salt, sizeof salt)) { | |
434 | BIO_printf(bio_err, "invalid hex salt value\n"); | |
435 | goto end; | |
436 | } | |
266483d2 | 437 | } else if (RAND_bytes(salt, sizeof salt) <= 0) |
0f113f3e MC |
438 | goto end; |
439 | /* | |
440 | * If -P option then don't bother writing | |
441 | */ | |
442 | if ((printkey != 2) | |
443 | && (BIO_write(wbio, magic, | |
444 | sizeof magic - 1) != sizeof magic - 1 | |
445 | || BIO_write(wbio, | |
446 | (char *)salt, | |
447 | sizeof salt) != sizeof salt)) { | |
448 | BIO_printf(bio_err, "error writing output file\n"); | |
449 | goto end; | |
450 | } | |
451 | } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf | |
452 | || BIO_read(rbio, | |
453 | (unsigned char *)salt, | |
454 | sizeof salt) != sizeof salt) { | |
455 | BIO_printf(bio_err, "error reading input file\n"); | |
456 | goto end; | |
457 | } else if (memcmp(mbuf, magic, sizeof magic - 1)) { | |
458 | BIO_printf(bio_err, "bad magic number\n"); | |
459 | goto end; | |
460 | } | |
461 | ||
462 | sptr = salt; | |
463 | } | |
464 | ||
465 | if (!EVP_BytesToKey(cipher, dgst, sptr, | |
466 | (unsigned char *)str, | |
467 | strlen(str), 1, key, iv)) { | |
468 | BIO_printf(bio_err, "EVP_BytesToKey failed\n"); | |
469 | goto end; | |
470 | } | |
471 | /* | |
472 | * zero the complete buffer or the string passed from the command | |
473 | * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu> | |
474 | */ | |
475 | if (str == strbuf) | |
476 | OPENSSL_cleanse(str, SIZE); | |
477 | else | |
478 | OPENSSL_cleanse(str, strlen(str)); | |
479 | } | |
8920a7cd RL |
480 | if (hiv != NULL) { |
481 | int siz = EVP_CIPHER_iv_length(cipher); | |
482 | if (siz == 0) { | |
483 | BIO_printf(bio_err, "warning: iv not use by this cipher\n"); | |
484 | } else if (!set_hex(hiv, iv, sizeof iv)) { | |
485 | BIO_printf(bio_err, "invalid hex iv value\n"); | |
486 | goto end; | |
487 | } | |
0f113f3e MC |
488 | } |
489 | if ((hiv == NULL) && (str == NULL) | |
490 | && EVP_CIPHER_iv_length(cipher) != 0) { | |
491 | /* | |
492 | * No IV was explicitly set and no IV was generated during | |
493 | * EVP_BytesToKey. Hence the IV is undefined, making correct | |
494 | * decryption impossible. | |
495 | */ | |
496 | BIO_printf(bio_err, "iv undefined\n"); | |
497 | goto end; | |
498 | } | |
8920a7cd | 499 | if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) { |
0f113f3e MC |
500 | BIO_printf(bio_err, "invalid hex key value\n"); |
501 | goto end; | |
502 | } | |
503 | ||
504 | if ((benc = BIO_new(BIO_f_cipher())) == NULL) | |
505 | goto end; | |
506 | ||
507 | /* | |
508 | * Since we may be changing parameters work on the encryption context | |
509 | * rather than calling BIO_set_cipher(). | |
510 | */ | |
511 | ||
512 | BIO_get_cipher_ctx(benc, &ctx); | |
513 | ||
0f113f3e MC |
514 | if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) { |
515 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
516 | EVP_CIPHER_name(cipher)); | |
517 | ERR_print_errors(bio_err); | |
518 | goto end; | |
519 | } | |
520 | ||
521 | if (nopad) | |
522 | EVP_CIPHER_CTX_set_padding(ctx, 0); | |
523 | ||
524 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) { | |
525 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
526 | EVP_CIPHER_name(cipher)); | |
527 | ERR_print_errors(bio_err); | |
528 | goto end; | |
529 | } | |
530 | ||
531 | if (debug) { | |
532 | BIO_set_callback(benc, BIO_debug_callback); | |
533 | BIO_set_callback_arg(benc, (char *)bio_err); | |
534 | } | |
535 | ||
536 | if (printkey) { | |
537 | if (!nosalt) { | |
538 | printf("salt="); | |
539 | for (i = 0; i < (int)sizeof(salt); i++) | |
540 | printf("%02X", salt[i]); | |
541 | printf("\n"); | |
542 | } | |
6c2ff56e | 543 | if (EVP_CIPHER_key_length(cipher) > 0) { |
0f113f3e | 544 | printf("key="); |
6c2ff56e | 545 | for (i = 0; i < EVP_CIPHER_key_length(cipher); i++) |
0f113f3e MC |
546 | printf("%02X", key[i]); |
547 | printf("\n"); | |
548 | } | |
6c2ff56e | 549 | if (EVP_CIPHER_iv_length(cipher) > 0) { |
0f113f3e | 550 | printf("iv ="); |
6c2ff56e | 551 | for (i = 0; i < EVP_CIPHER_iv_length(cipher); i++) |
0f113f3e MC |
552 | printf("%02X", iv[i]); |
553 | printf("\n"); | |
554 | } | |
555 | if (printkey == 2) { | |
556 | ret = 0; | |
557 | goto end; | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | /* Only encrypt/decrypt as we write the file */ | |
563 | if (benc != NULL) | |
564 | wbio = BIO_push(benc, wbio); | |
565 | ||
566 | for (;;) { | |
567 | inl = BIO_read(rbio, (char *)buff, bsize); | |
568 | if (inl <= 0) | |
569 | break; | |
570 | if (BIO_write(wbio, (char *)buff, inl) != inl) { | |
571 | BIO_printf(bio_err, "error writing output file\n"); | |
572 | goto end; | |
573 | } | |
574 | } | |
575 | if (!BIO_flush(wbio)) { | |
576 | BIO_printf(bio_err, "bad decrypt\n"); | |
577 | goto end; | |
578 | } | |
579 | ||
580 | ret = 0; | |
581 | if (verbose) { | |
fb029ceb AE |
582 | BIO_printf(bio_err, "bytes read :%8"PRIu64"\n", BIO_number_read(in)); |
583 | BIO_printf(bio_err, "bytes written:%8"PRIu64"\n", BIO_number_written(out)); | |
0f113f3e MC |
584 | } |
585 | end: | |
586 | ERR_print_errors(bio_err); | |
b548a1f1 RS |
587 | OPENSSL_free(strbuf); |
588 | OPENSSL_free(buff); | |
ca3a82c3 RS |
589 | BIO_free(in); |
590 | BIO_free_all(out); | |
591 | BIO_free(benc); | |
592 | BIO_free(b64); | |
8931b30d | 593 | #ifdef ZLIB |
ca3a82c3 | 594 | BIO_free(bzl); |
8931b30d | 595 | #endif |
b548a1f1 | 596 | OPENSSL_free(pass); |
7e1b7485 RS |
597 | return (ret); |
598 | } | |
599 | ||
600 | static void show_ciphers(const OBJ_NAME *name, void *bio_) | |
601 | { | |
602 | BIO *bio = bio_; | |
603 | static int n; | |
604 | ||
605 | if (!islower((unsigned char)*name->name)) | |
606 | return; | |
607 | ||
608 | BIO_printf(bio, "-%-25s", name->name); | |
609 | if (++n == 3) { | |
610 | BIO_printf(bio, "\n"); | |
611 | n = 0; | |
612 | } else | |
613 | BIO_printf(bio, " "); | |
0f113f3e | 614 | } |
d02b48c6 | 615 | |
7e1b7485 | 616 | static int set_hex(char *in, unsigned char *out, int size) |
0f113f3e MC |
617 | { |
618 | int i, n; | |
619 | unsigned char j; | |
620 | ||
621 | n = strlen(in); | |
622 | if (n > (size * 2)) { | |
623 | BIO_printf(bio_err, "hex string is too long\n"); | |
624 | return (0); | |
625 | } | |
626 | memset(out, 0, size); | |
627 | for (i = 0; i < n; i++) { | |
628 | j = (unsigned char)*in; | |
629 | *(in++) = '\0'; | |
630 | if (j == 0) | |
631 | break; | |
2fa45e6e | 632 | if (!isxdigit(j)) { |
0f113f3e MC |
633 | BIO_printf(bio_err, "non-hex digit\n"); |
634 | return (0); | |
635 | } | |
2fa45e6e | 636 | j = (unsigned char)app_hex(j); |
0f113f3e MC |
637 | if (i & 1) |
638 | out[i / 2] |= j; | |
639 | else | |
640 | out[i / 2] = (j << 4); | |
641 | } | |
642 | return (1); | |
643 | } |