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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"}, | |
100 | {"v", OPT_V, '-'}, | |
101 | {"nopad", OPT_NOPAD, '-', "Disable standard block padding"}, | |
102 | {"salt", OPT_SALT, '-'}, | |
103 | {"nosalt", OPT_NOSALT, '-'}, | |
104 | {"debug", OPT_DEBUG, '-'}, | |
105 | {"A", OPT_UPPER_A, '-'}, | |
106 | {"a", OPT_A, '-', "base64 encode/decode, depending on encryption flag"}, | |
107 | {"base64", OPT_A, '-', "Base64 output as a single line"}, | |
7e1b7485 RS |
108 | {"bufsize", OPT_BUFSIZE, 's', "Buffer size"}, |
109 | {"k", OPT_K, 's', "Passphrase"}, | |
110 | {"kfile", OPT_KFILE, '<', "Fead passphrase from file"}, | |
b256f717 | 111 | {"K", OPT_UPPER_K, 's', "Raw key, in hex"}, |
7e1b7485 RS |
112 | {"S", OPT_UPPER_S, 's', "Salt, in hex"}, |
113 | {"iv", OPT_IV, 's', "IV in hex"}, | |
114 | {"md", OPT_MD, 's', "Use specified digest to create key from passphrase"}, | |
7e1b7485 RS |
115 | {"none", OPT_NONE, '-', "Don't encrypt"}, |
116 | {"", OPT_CIPHER, '-', "Any supported cipher"}, | |
9c3bcfa0 RS |
117 | #ifdef ZLIB |
118 | {"z", OPT_Z, '-', "Use zlib as the 'encryption'"}, | |
119 | #endif | |
120 | #ifndef OPENSSL_NO_ENGINE | |
121 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
122 | #endif | |
7e1b7485 RS |
123 | {NULL} |
124 | }; | |
125 | ||
126 | int enc_main(int argc, char **argv) | |
0f113f3e | 127 | { |
7e1b7485 | 128 | static char buf[128]; |
0f113f3e | 129 | static const char magic[] = "Salted__"; |
7e1b7485 RS |
130 | BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio = |
131 | NULL, *wbio = NULL; | |
132 | EVP_CIPHER_CTX *ctx = NULL; | |
133 | const EVP_CIPHER *cipher = NULL, *c; | |
134 | const EVP_MD *dgst = NULL; | |
333b070e | 135 | char *hkey = NULL, *hiv = NULL, *hsalt = NULL, *p; |
7e1b7485 RS |
136 | char *infile = NULL, *outfile = NULL, *prog; |
137 | char *str = NULL, *passarg = NULL, *pass = NULL, *strbuf = NULL; | |
0f113f3e | 138 | char mbuf[sizeof magic - 1]; |
7e1b7485 RS |
139 | OPTION_CHOICE o; |
140 | int bsize = BSIZE, verbose = 0, debug = 0, olb64 = 0, nosalt = 0; | |
5f62e044 RL |
141 | int enc = 1, printkey = 0, i, k; |
142 | int base64 = 0, informat = FORMAT_BINARY, outformat = FORMAT_BINARY; | |
700b4a4a | 143 | int ret = 1, inl, nopad = 0; |
0f113f3e | 144 | unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; |
7e1b7485 | 145 | unsigned char *buff = NULL, salt[PKCS5_SALT_LEN]; |
bd4850df | 146 | long n; |
8931b30d | 147 | #ifdef ZLIB |
0f113f3e MC |
148 | int do_zlib = 0; |
149 | BIO *bzl = NULL; | |
8931b30d | 150 | #endif |
3647bee2 | 151 | |
0f113f3e | 152 | /* first check the program name */ |
7e1b7485 RS |
153 | prog = opt_progname(argv[0]); |
154 | if (strcmp(prog, "base64") == 0) | |
5f62e044 | 155 | base64 = 1; |
8931b30d | 156 | #ifdef ZLIB |
7e1b7485 | 157 | else if (strcmp(prog, "zlib") == 0) |
0f113f3e | 158 | do_zlib = 1; |
8931b30d | 159 | #endif |
7e1b7485 RS |
160 | else { |
161 | cipher = EVP_get_cipherbyname(prog); | |
162 | if (cipher == NULL && strcmp(prog, "enc") != 0) { | |
163 | BIO_printf(bio_err, "%s is not a known cipher\n", prog); | |
164 | goto end; | |
165 | } | |
0f113f3e MC |
166 | } |
167 | ||
7e1b7485 RS |
168 | prog = opt_init(argc, argv, enc_options); |
169 | while ((o = opt_next()) != OPT_EOF) { | |
170 | switch (o) { | |
171 | case OPT_EOF: | |
172 | case OPT_ERR: | |
173 | opthelp: | |
174 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
175 | goto end; | |
176 | case OPT_HELP: | |
177 | opt_help(enc_options); | |
178 | ret = 0; | |
179 | BIO_printf(bio_err, "Cipher Types\n"); | |
180 | OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, | |
181 | show_ciphers, bio_err); | |
182 | BIO_printf(bio_err, "\n"); | |
183 | goto end; | |
184 | case OPT_E: | |
0f113f3e | 185 | enc = 1; |
7e1b7485 RS |
186 | break; |
187 | case OPT_IN: | |
188 | infile = opt_arg(); | |
189 | break; | |
190 | case OPT_OUT: | |
191 | outfile = opt_arg(); | |
192 | break; | |
193 | case OPT_PASS: | |
194 | passarg = opt_arg(); | |
195 | break; | |
196 | case OPT_ENGINE: | |
333b070e | 197 | (void)setup_engine(opt_arg(), 0); |
7e1b7485 RS |
198 | break; |
199 | case OPT_D: | |
0f113f3e | 200 | enc = 0; |
7e1b7485 RS |
201 | break; |
202 | case OPT_P: | |
0f113f3e | 203 | printkey = 1; |
7e1b7485 RS |
204 | break; |
205 | case OPT_V: | |
0f113f3e | 206 | verbose = 1; |
7e1b7485 RS |
207 | break; |
208 | case OPT_NOPAD: | |
0f113f3e | 209 | nopad = 1; |
7e1b7485 RS |
210 | break; |
211 | case OPT_SALT: | |
0f113f3e | 212 | nosalt = 0; |
7e1b7485 RS |
213 | break; |
214 | case OPT_NOSALT: | |
0f113f3e | 215 | nosalt = 1; |
7e1b7485 RS |
216 | break; |
217 | case OPT_DEBUG: | |
0f113f3e | 218 | debug = 1; |
7e1b7485 RS |
219 | break; |
220 | case OPT_UPPER_P: | |
0f113f3e | 221 | printkey = 2; |
7e1b7485 RS |
222 | break; |
223 | case OPT_UPPER_A: | |
0f113f3e | 224 | olb64 = 1; |
7e1b7485 RS |
225 | break; |
226 | case OPT_A: | |
5f62e044 | 227 | base64 = 1; |
7e1b7485 RS |
228 | break; |
229 | case OPT_Z: | |
8931b30d | 230 | #ifdef ZLIB |
0f113f3e | 231 | do_zlib = 1; |
8931b30d | 232 | #endif |
7e1b7485 RS |
233 | break; |
234 | case OPT_BUFSIZE: | |
235 | p = opt_arg(); | |
236 | i = (int)strlen(p) - 1; | |
237 | k = i >= 1 && p[i] == 'k'; | |
238 | if (k) | |
239 | p[i] = '\0'; | |
bd4850df RS |
240 | if (!opt_long(opt_arg(), &n) |
241 | || n < 0 || (k && n >= LONG_MAX / 1024)) | |
7e1b7485 RS |
242 | goto opthelp; |
243 | if (k) | |
244 | n *= 1024; | |
245 | bsize = (int)n; | |
246 | break; | |
247 | case OPT_K: | |
248 | str = opt_arg(); | |
249 | break; | |
250 | case OPT_KFILE: | |
bdd58d98 | 251 | in = bio_open_default(opt_arg(), 'r', FORMAT_TEXT); |
7e1b7485 RS |
252 | if (in == NULL) |
253 | goto opthelp; | |
254 | i = BIO_gets(in, buf, sizeof buf); | |
255 | BIO_free(in); | |
256 | in = NULL; | |
257 | if (i <= 0) { | |
258 | BIO_printf(bio_err, | |
259 | "%s Can't read key from %s\n", prog, opt_arg()); | |
260 | goto opthelp; | |
0f113f3e | 261 | } |
7e1b7485 RS |
262 | while (--i > 0 && (buf[i] == '\r' || buf[i] == '\n')) |
263 | buf[i] = '\0'; | |
264 | if (i <= 0) { | |
265 | BIO_printf(bio_err, "%s: zero length password\n", prog); | |
266 | goto opthelp; | |
0f113f3e MC |
267 | } |
268 | str = buf; | |
7e1b7485 RS |
269 | break; |
270 | case OPT_UPPER_K: | |
271 | hkey = opt_arg(); | |
272 | break; | |
273 | case OPT_UPPER_S: | |
274 | hsalt = opt_arg(); | |
275 | break; | |
276 | case OPT_IV: | |
277 | hiv = opt_arg(); | |
278 | break; | |
279 | case OPT_MD: | |
280 | if (!opt_md(opt_arg(), &dgst)) | |
281 | goto opthelp; | |
282 | break; | |
7e1b7485 RS |
283 | case OPT_CIPHER: |
284 | if (!opt_cipher(opt_unknown(), &c)) | |
285 | goto opthelp; | |
0f113f3e | 286 | cipher = c; |
7e1b7485 RS |
287 | break; |
288 | case OPT_NONE: | |
0f113f3e | 289 | cipher = NULL; |
7e1b7485 | 290 | break; |
0f113f3e | 291 | } |
0f113f3e | 292 | } |
7e1b7485 RS |
293 | argc = opt_num_rest(); |
294 | argv = opt_rest(); | |
d02b48c6 | 295 | |
0f113f3e | 296 | if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { |
7e1b7485 | 297 | BIO_printf(bio_err, "%s: AEAD ciphers not supported\n", prog); |
0f113f3e MC |
298 | goto end; |
299 | } | |
300 | ||
301 | if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) { | |
7e1b7485 | 302 | BIO_printf(bio_err, "%s XTS ciphers not supported\n", prog); |
0f113f3e MC |
303 | goto end; |
304 | } | |
305 | ||
7e1b7485 | 306 | if (dgst == NULL) |
f8547f62 | 307 | dgst = EVP_sha256(); |
0f113f3e | 308 | |
7e1b7485 | 309 | /* It must be large enough for a base64 encoded line */ |
5f62e044 | 310 | if (base64 && bsize < 80) |
7e1b7485 RS |
311 | bsize = 80; |
312 | if (verbose) | |
313 | BIO_printf(bio_err, "bufsize=%d\n", bsize); | |
0f113f3e | 314 | |
5f62e044 RL |
315 | if (base64) { |
316 | if (enc) | |
317 | outformat = FORMAT_BASE64; | |
318 | else | |
319 | informat = FORMAT_BASE64; | |
320 | } | |
321 | ||
68dc6824 RS |
322 | strbuf = app_malloc(SIZE, "strbuf"); |
323 | buff = app_malloc(EVP_ENCODE_LENGTH(bsize), "evp buffer"); | |
0f113f3e | 324 | |
0f113f3e MC |
325 | if (debug) { |
326 | BIO_set_callback(in, BIO_debug_callback); | |
327 | BIO_set_callback(out, BIO_debug_callback); | |
328 | BIO_set_callback_arg(in, (char *)bio_err); | |
329 | BIO_set_callback_arg(out, (char *)bio_err); | |
330 | } | |
331 | ||
7e1b7485 RS |
332 | if (infile == NULL) { |
333 | unbuffer(stdin); | |
5f62e044 | 334 | in = dup_bio_in(informat); |
7e1b7485 | 335 | } else |
5f62e044 | 336 | in = bio_open_default(infile, 'r', informat); |
7e1b7485 RS |
337 | if (in == NULL) |
338 | goto end; | |
0f113f3e MC |
339 | |
340 | if (!str && passarg) { | |
7e1b7485 | 341 | if (!app_passwd(passarg, NULL, &pass, NULL)) { |
0f113f3e MC |
342 | BIO_printf(bio_err, "Error getting password\n"); |
343 | goto end; | |
344 | } | |
345 | str = pass; | |
346 | } | |
347 | ||
348 | if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) { | |
349 | for (;;) { | |
7e1b7485 | 350 | char prompt[200]; |
0f113f3e | 351 | |
7e1b7485 | 352 | BIO_snprintf(prompt, sizeof prompt, "enter %s %s password:", |
0f113f3e MC |
353 | OBJ_nid2ln(EVP_CIPHER_nid(cipher)), |
354 | (enc) ? "encryption" : "decryption"); | |
355 | strbuf[0] = '\0'; | |
7e1b7485 | 356 | i = EVP_read_pw_string((char *)strbuf, SIZE, prompt, enc); |
0f113f3e MC |
357 | if (i == 0) { |
358 | if (strbuf[0] == '\0') { | |
359 | ret = 1; | |
360 | goto end; | |
361 | } | |
362 | str = strbuf; | |
363 | break; | |
364 | } | |
365 | if (i < 0) { | |
366 | BIO_printf(bio_err, "bad password read\n"); | |
367 | goto end; | |
368 | } | |
369 | } | |
370 | } | |
371 | ||
5f62e044 | 372 | out = bio_open_default(outfile, 'w', outformat); |
7e1b7485 RS |
373 | if (out == NULL) |
374 | goto end; | |
0f113f3e MC |
375 | |
376 | rbio = in; | |
377 | wbio = out; | |
fd699ac5 | 378 | |
8931b30d | 379 | #ifdef ZLIB |
0f113f3e MC |
380 | if (do_zlib) { |
381 | if ((bzl = BIO_new(BIO_f_zlib())) == NULL) | |
382 | goto end; | |
383 | if (enc) | |
384 | wbio = BIO_push(bzl, wbio); | |
385 | else | |
386 | rbio = BIO_push(bzl, rbio); | |
387 | } | |
8931b30d DSH |
388 | #endif |
389 | ||
5f62e044 | 390 | if (base64) { |
0f113f3e MC |
391 | if ((b64 = BIO_new(BIO_f_base64())) == NULL) |
392 | goto end; | |
393 | if (debug) { | |
394 | BIO_set_callback(b64, BIO_debug_callback); | |
395 | BIO_set_callback_arg(b64, (char *)bio_err); | |
396 | } | |
397 | if (olb64) | |
398 | BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); | |
399 | if (enc) | |
400 | wbio = BIO_push(b64, wbio); | |
401 | else | |
402 | rbio = BIO_push(b64, rbio); | |
403 | } | |
404 | ||
405 | if (cipher != NULL) { | |
406 | /* | |
407 | * Note that str is NULL if a key was passed on the command line, so | |
408 | * we get no salt in that case. Is this a bug? | |
409 | */ | |
410 | if (str != NULL) { | |
411 | /* | |
412 | * Salt handling: if encrypting generate a salt and write to | |
413 | * output BIO. If decrypting read salt from input BIO. | |
414 | */ | |
415 | unsigned char *sptr; | |
416 | if (nosalt) | |
417 | sptr = NULL; | |
418 | else { | |
419 | if (enc) { | |
420 | if (hsalt) { | |
421 | if (!set_hex(hsalt, salt, sizeof salt)) { | |
422 | BIO_printf(bio_err, "invalid hex salt value\n"); | |
423 | goto end; | |
424 | } | |
266483d2 | 425 | } else if (RAND_bytes(salt, sizeof salt) <= 0) |
0f113f3e MC |
426 | goto end; |
427 | /* | |
428 | * If -P option then don't bother writing | |
429 | */ | |
430 | if ((printkey != 2) | |
431 | && (BIO_write(wbio, magic, | |
432 | sizeof magic - 1) != sizeof magic - 1 | |
433 | || BIO_write(wbio, | |
434 | (char *)salt, | |
435 | sizeof salt) != sizeof salt)) { | |
436 | BIO_printf(bio_err, "error writing output file\n"); | |
437 | goto end; | |
438 | } | |
439 | } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf | |
440 | || BIO_read(rbio, | |
441 | (unsigned char *)salt, | |
442 | sizeof salt) != sizeof salt) { | |
443 | BIO_printf(bio_err, "error reading input file\n"); | |
444 | goto end; | |
445 | } else if (memcmp(mbuf, magic, sizeof magic - 1)) { | |
446 | BIO_printf(bio_err, "bad magic number\n"); | |
447 | goto end; | |
448 | } | |
449 | ||
450 | sptr = salt; | |
451 | } | |
452 | ||
453 | if (!EVP_BytesToKey(cipher, dgst, sptr, | |
454 | (unsigned char *)str, | |
455 | strlen(str), 1, key, iv)) { | |
456 | BIO_printf(bio_err, "EVP_BytesToKey failed\n"); | |
457 | goto end; | |
458 | } | |
459 | /* | |
460 | * zero the complete buffer or the string passed from the command | |
461 | * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu> | |
462 | */ | |
463 | if (str == strbuf) | |
464 | OPENSSL_cleanse(str, SIZE); | |
465 | else | |
466 | OPENSSL_cleanse(str, strlen(str)); | |
467 | } | |
8920a7cd RL |
468 | if (hiv != NULL) { |
469 | int siz = EVP_CIPHER_iv_length(cipher); | |
470 | if (siz == 0) { | |
471 | BIO_printf(bio_err, "warning: iv not use by this cipher\n"); | |
472 | } else if (!set_hex(hiv, iv, sizeof iv)) { | |
473 | BIO_printf(bio_err, "invalid hex iv value\n"); | |
474 | goto end; | |
475 | } | |
0f113f3e MC |
476 | } |
477 | if ((hiv == NULL) && (str == NULL) | |
478 | && EVP_CIPHER_iv_length(cipher) != 0) { | |
479 | /* | |
480 | * No IV was explicitly set and no IV was generated during | |
481 | * EVP_BytesToKey. Hence the IV is undefined, making correct | |
482 | * decryption impossible. | |
483 | */ | |
484 | BIO_printf(bio_err, "iv undefined\n"); | |
485 | goto end; | |
486 | } | |
8920a7cd | 487 | if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) { |
0f113f3e MC |
488 | BIO_printf(bio_err, "invalid hex key value\n"); |
489 | goto end; | |
490 | } | |
491 | ||
492 | if ((benc = BIO_new(BIO_f_cipher())) == NULL) | |
493 | goto end; | |
494 | ||
495 | /* | |
496 | * Since we may be changing parameters work on the encryption context | |
497 | * rather than calling BIO_set_cipher(). | |
498 | */ | |
499 | ||
500 | BIO_get_cipher_ctx(benc, &ctx); | |
501 | ||
0f113f3e MC |
502 | if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) { |
503 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
504 | EVP_CIPHER_name(cipher)); | |
505 | ERR_print_errors(bio_err); | |
506 | goto end; | |
507 | } | |
508 | ||
509 | if (nopad) | |
510 | EVP_CIPHER_CTX_set_padding(ctx, 0); | |
511 | ||
512 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) { | |
513 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
514 | EVP_CIPHER_name(cipher)); | |
515 | ERR_print_errors(bio_err); | |
516 | goto end; | |
517 | } | |
518 | ||
519 | if (debug) { | |
520 | BIO_set_callback(benc, BIO_debug_callback); | |
521 | BIO_set_callback_arg(benc, (char *)bio_err); | |
522 | } | |
523 | ||
524 | if (printkey) { | |
525 | if (!nosalt) { | |
526 | printf("salt="); | |
527 | for (i = 0; i < (int)sizeof(salt); i++) | |
528 | printf("%02X", salt[i]); | |
529 | printf("\n"); | |
530 | } | |
6c2ff56e | 531 | if (EVP_CIPHER_key_length(cipher) > 0) { |
0f113f3e | 532 | printf("key="); |
6c2ff56e | 533 | for (i = 0; i < EVP_CIPHER_key_length(cipher); i++) |
0f113f3e MC |
534 | printf("%02X", key[i]); |
535 | printf("\n"); | |
536 | } | |
6c2ff56e | 537 | if (EVP_CIPHER_iv_length(cipher) > 0) { |
0f113f3e | 538 | printf("iv ="); |
6c2ff56e | 539 | for (i = 0; i < EVP_CIPHER_iv_length(cipher); i++) |
0f113f3e MC |
540 | printf("%02X", iv[i]); |
541 | printf("\n"); | |
542 | } | |
543 | if (printkey == 2) { | |
544 | ret = 0; | |
545 | goto end; | |
546 | } | |
547 | } | |
548 | } | |
549 | ||
550 | /* Only encrypt/decrypt as we write the file */ | |
551 | if (benc != NULL) | |
552 | wbio = BIO_push(benc, wbio); | |
553 | ||
554 | for (;;) { | |
555 | inl = BIO_read(rbio, (char *)buff, bsize); | |
556 | if (inl <= 0) | |
557 | break; | |
558 | if (BIO_write(wbio, (char *)buff, inl) != inl) { | |
559 | BIO_printf(bio_err, "error writing output file\n"); | |
560 | goto end; | |
561 | } | |
562 | } | |
563 | if (!BIO_flush(wbio)) { | |
564 | BIO_printf(bio_err, "bad decrypt\n"); | |
565 | goto end; | |
566 | } | |
567 | ||
568 | ret = 0; | |
569 | if (verbose) { | |
fb029ceb AE |
570 | BIO_printf(bio_err, "bytes read :%8"PRIu64"\n", BIO_number_read(in)); |
571 | BIO_printf(bio_err, "bytes written:%8"PRIu64"\n", BIO_number_written(out)); | |
0f113f3e MC |
572 | } |
573 | end: | |
574 | ERR_print_errors(bio_err); | |
b548a1f1 RS |
575 | OPENSSL_free(strbuf); |
576 | OPENSSL_free(buff); | |
ca3a82c3 RS |
577 | BIO_free(in); |
578 | BIO_free_all(out); | |
579 | BIO_free(benc); | |
580 | BIO_free(b64); | |
8931b30d | 581 | #ifdef ZLIB |
ca3a82c3 | 582 | BIO_free(bzl); |
8931b30d | 583 | #endif |
b548a1f1 | 584 | OPENSSL_free(pass); |
7e1b7485 RS |
585 | return (ret); |
586 | } | |
587 | ||
588 | static void show_ciphers(const OBJ_NAME *name, void *bio_) | |
589 | { | |
590 | BIO *bio = bio_; | |
591 | static int n; | |
592 | ||
593 | if (!islower((unsigned char)*name->name)) | |
594 | return; | |
595 | ||
596 | BIO_printf(bio, "-%-25s", name->name); | |
597 | if (++n == 3) { | |
598 | BIO_printf(bio, "\n"); | |
599 | n = 0; | |
600 | } else | |
601 | BIO_printf(bio, " "); | |
0f113f3e | 602 | } |
d02b48c6 | 603 | |
7e1b7485 | 604 | static int set_hex(char *in, unsigned char *out, int size) |
0f113f3e MC |
605 | { |
606 | int i, n; | |
607 | unsigned char j; | |
608 | ||
609 | n = strlen(in); | |
610 | if (n > (size * 2)) { | |
611 | BIO_printf(bio_err, "hex string is too long\n"); | |
612 | return (0); | |
613 | } | |
614 | memset(out, 0, size); | |
615 | for (i = 0; i < n; i++) { | |
616 | j = (unsigned char)*in; | |
617 | *(in++) = '\0'; | |
618 | if (j == 0) | |
619 | break; | |
2fa45e6e | 620 | if (!isxdigit(j)) { |
0f113f3e MC |
621 | BIO_printf(bio_err, "non-hex digit\n"); |
622 | return (0); | |
623 | } | |
2fa45e6e | 624 | j = (unsigned char)app_hex(j); |
0f113f3e MC |
625 | if (i & 1) |
626 | out[i / 2] |= j; | |
627 | else | |
628 | out[i / 2] = (j << 4); | |
629 | } | |
630 | return (1); | |
631 | } |