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Commit | Line | Data |
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846e33c7 | 1 | /* |
4333b89f | 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
dffa7520 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
bd4850df | 13 | #include <limits.h> |
d02b48c6 | 14 | #include "apps.h" |
dab2cd68 | 15 | #include "progs.h" |
ec577822 BM |
16 | #include <openssl/bio.h> |
17 | #include <openssl/err.h> | |
18 | #include <openssl/evp.h> | |
19 | #include <openssl/objects.h> | |
20 | #include <openssl/x509.h> | |
fd699ac5 | 21 | #include <openssl/rand.h> |
ec577822 | 22 | #include <openssl/pem.h> |
9494e99b | 23 | #ifndef OPENSSL_NO_COMP |
0f113f3e | 24 | # include <openssl/comp.h> |
9494e99b | 25 | #endif |
646d5695 | 26 | #include <ctype.h> |
d02b48c6 | 27 | |
d02b48c6 RE |
28 | #undef SIZE |
29 | #undef BSIZE | |
0f113f3e MC |
30 | #define SIZE (512) |
31 | #define BSIZE (8*1024) | |
646d5695 | 32 | |
d5961b22 | 33 | static int set_hex(const char *in, unsigned char *out, int size); |
7e1b7485 RS |
34 | static void show_ciphers(const OBJ_NAME *name, void *bio_); |
35 | ||
2b305ab0 P |
36 | struct doall_enc_ciphers { |
37 | BIO *bio; | |
38 | int n; | |
39 | }; | |
40 | ||
7e1b7485 | 41 | typedef enum OPTION_choice { |
b0f96018 | 42 | OPT_COMMON, |
3b5bea36 | 43 | OPT_LIST, |
7e1b7485 RS |
44 | OPT_E, OPT_IN, OPT_OUT, OPT_PASS, OPT_ENGINE, OPT_D, OPT_P, OPT_V, |
45 | OPT_NOPAD, OPT_SALT, OPT_NOSALT, OPT_DEBUG, OPT_UPPER_P, OPT_UPPER_A, | |
46 | OPT_A, OPT_Z, OPT_BUFSIZE, OPT_K, OPT_KFILE, OPT_UPPER_K, OPT_NONE, | |
405988f2 | 47 | OPT_UPPER_S, OPT_IV, OPT_MD, OPT_ITER, OPT_PBKDF2, OPT_CIPHER, |
6bd4e3f2 | 48 | OPT_R_ENUM, OPT_PROV_ENUM |
7e1b7485 RS |
49 | } OPTION_CHOICE; |
50 | ||
44c83ebd | 51 | const OPTIONS enc_options[] = { |
5388f986 | 52 | OPT_SECTION("General"), |
7e1b7485 | 53 | {"help", OPT_HELP, '-', "Display this summary"}, |
f62d67b6 | 54 | {"list", OPT_LIST, '-', "List ciphers"}, |
936c2b9e | 55 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
f62d67b6 | 56 | {"ciphers", OPT_LIST, '-', "Alias for -list"}, |
57 | #endif | |
7e1b7485 RS |
58 | {"e", OPT_E, '-', "Encrypt"}, |
59 | {"d", OPT_D, '-', "Decrypt"}, | |
60 | {"p", OPT_P, '-', "Print the iv/key"}, | |
61 | {"P", OPT_UPPER_P, '-', "Print the iv/key and exit"}, | |
5388f986 RS |
62 | #ifndef OPENSSL_NO_ENGINE |
63 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
64 | #endif | |
65 | ||
66 | OPT_SECTION("Input"), | |
67 | {"in", OPT_IN, '<', "Input file"}, | |
68 | {"k", OPT_K, 's', "Passphrase"}, | |
69 | {"kfile", OPT_KFILE, '<', "Read passphrase from file"}, | |
70 | ||
71 | OPT_SECTION("Output"), | |
72 | {"out", OPT_OUT, '>', "Output file"}, | |
73 | {"pass", OPT_PASS, 's', "Passphrase source"}, | |
9a13bb38 | 74 | {"v", OPT_V, '-', "Verbose output"}, |
9a13bb38 RS |
75 | {"a", OPT_A, '-', "Base64 encode/decode, depending on encryption flag"}, |
76 | {"base64", OPT_A, '-', "Same as option -a"}, | |
77 | {"A", OPT_UPPER_A, '-', | |
78 | "Used with -[base64|a] to specify base64 buffer as a single line"}, | |
5388f986 RS |
79 | |
80 | OPT_SECTION("Encryption"), | |
81 | {"nopad", OPT_NOPAD, '-', "Disable standard block padding"}, | |
82 | {"salt", OPT_SALT, '-', "Use salt in the KDF (default)"}, | |
83 | {"nosalt", OPT_NOSALT, '-', "Do not use salt in the KDF"}, | |
84 | {"debug", OPT_DEBUG, '-', "Print debug info"}, | |
85 | ||
7e1b7485 | 86 | {"bufsize", OPT_BUFSIZE, 's', "Buffer size"}, |
b256f717 | 87 | {"K", OPT_UPPER_K, 's', "Raw key, in hex"}, |
7e1b7485 RS |
88 | {"S", OPT_UPPER_S, 's', "Salt, in hex"}, |
89 | {"iv", OPT_IV, 's', "IV in hex"}, | |
5507b961 | 90 | {"md", OPT_MD, 's', "Use specified digest to create a key from the passphrase"}, |
405988f2 E |
91 | {"iter", OPT_ITER, 'p', "Specify the iteration count and force use of PBKDF2"}, |
92 | {"pbkdf2", OPT_PBKDF2, '-', "Use password-based key derivation function 2"}, | |
7e1b7485 | 93 | {"none", OPT_NONE, '-', "Don't encrypt"}, |
9c3bcfa0 | 94 | #ifdef ZLIB |
6635ea53 | 95 | {"z", OPT_Z, '-', "Compress or decompress encrypted data using zlib"}, |
9c3bcfa0 | 96 | #endif |
5388f986 RS |
97 | {"", OPT_CIPHER, '-', "Any supported cipher"}, |
98 | ||
99 | OPT_R_OPTIONS, | |
6bd4e3f2 | 100 | OPT_PROV_OPTIONS, |
7e1b7485 RS |
101 | {NULL} |
102 | }; | |
103 | ||
104 | int enc_main(int argc, char **argv) | |
0f113f3e | 105 | { |
7e1b7485 | 106 | static char buf[128]; |
0f113f3e | 107 | static const char magic[] = "Salted__"; |
dd1abd44 | 108 | ENGINE *e = NULL; |
7e1b7485 RS |
109 | BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio = |
110 | NULL, *wbio = NULL; | |
111 | EVP_CIPHER_CTX *ctx = NULL; | |
606a417f RS |
112 | EVP_CIPHER *cipher = NULL; |
113 | EVP_MD *dgst = NULL; | |
d0190e11 | 114 | const char *digestname = NULL; |
333b070e | 115 | char *hkey = NULL, *hiv = NULL, *hsalt = NULL, *p; |
50ca7e18 | 116 | char *infile = NULL, *outfile = NULL, *prog; |
7e1b7485 | 117 | char *str = NULL, *passarg = NULL, *pass = NULL, *strbuf = NULL; |
50ca7e18 | 118 | const char *ciphername = NULL; |
cbe29648 | 119 | char mbuf[sizeof(magic) - 1]; |
7e1b7485 RS |
120 | OPTION_CHOICE o; |
121 | int bsize = BSIZE, verbose = 0, debug = 0, olb64 = 0, nosalt = 0; | |
5f62e044 RL |
122 | int enc = 1, printkey = 0, i, k; |
123 | int base64 = 0, informat = FORMAT_BINARY, outformat = FORMAT_BINARY; | |
700b4a4a | 124 | int ret = 1, inl, nopad = 0; |
0f113f3e | 125 | unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; |
7e1b7485 | 126 | unsigned char *buff = NULL, salt[PKCS5_SALT_LEN]; |
405988f2 E |
127 | int pbkdf2 = 0; |
128 | int iter = 0; | |
bd4850df | 129 | long n; |
2b305ab0 | 130 | struct doall_enc_ciphers dec; |
8931b30d | 131 | #ifdef ZLIB |
0f113f3e MC |
132 | int do_zlib = 0; |
133 | BIO *bzl = NULL; | |
8931b30d | 134 | #endif |
3647bee2 | 135 | |
33720392 | 136 | /* first check the command name */ |
50ca7e18 | 137 | if (strcmp(argv[0], "base64") == 0) |
5f62e044 | 138 | base64 = 1; |
8931b30d | 139 | #ifdef ZLIB |
50ca7e18 | 140 | else if (strcmp(argv[0], "zlib") == 0) |
0f113f3e | 141 | do_zlib = 1; |
8931b30d | 142 | #endif |
50ca7e18 RS |
143 | else if (strcmp(argv[0], "enc") != 0) |
144 | ciphername = argv[0]; | |
0f113f3e | 145 | |
7e1b7485 RS |
146 | prog = opt_init(argc, argv, enc_options); |
147 | while ((o = opt_next()) != OPT_EOF) { | |
148 | switch (o) { | |
149 | case OPT_EOF: | |
150 | case OPT_ERR: | |
151 | opthelp: | |
152 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
153 | goto end; | |
154 | case OPT_HELP: | |
155 | opt_help(enc_options); | |
156 | ret = 0; | |
3b5bea36 RS |
157 | goto end; |
158 | case OPT_LIST: | |
341de5f1 | 159 | BIO_printf(bio_out, "Supported ciphers:\n"); |
2b305ab0 P |
160 | dec.bio = bio_out; |
161 | dec.n = 0; | |
7e1b7485 | 162 | OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, |
2b305ab0 | 163 | show_ciphers, &dec); |
341de5f1 RL |
164 | BIO_printf(bio_out, "\n"); |
165 | ret = 0; | |
7e1b7485 RS |
166 | goto end; |
167 | case OPT_E: | |
0f113f3e | 168 | enc = 1; |
7e1b7485 RS |
169 | break; |
170 | case OPT_IN: | |
171 | infile = opt_arg(); | |
172 | break; | |
173 | case OPT_OUT: | |
174 | outfile = opt_arg(); | |
175 | break; | |
176 | case OPT_PASS: | |
177 | passarg = opt_arg(); | |
178 | break; | |
179 | case OPT_ENGINE: | |
dd1abd44 | 180 | e = setup_engine(opt_arg(), 0); |
7e1b7485 RS |
181 | break; |
182 | case OPT_D: | |
0f113f3e | 183 | enc = 0; |
7e1b7485 RS |
184 | break; |
185 | case OPT_P: | |
0f113f3e | 186 | printkey = 1; |
7e1b7485 RS |
187 | break; |
188 | case OPT_V: | |
0f113f3e | 189 | verbose = 1; |
7e1b7485 RS |
190 | break; |
191 | case OPT_NOPAD: | |
0f113f3e | 192 | nopad = 1; |
7e1b7485 RS |
193 | break; |
194 | case OPT_SALT: | |
0f113f3e | 195 | nosalt = 0; |
7e1b7485 RS |
196 | break; |
197 | case OPT_NOSALT: | |
0f113f3e | 198 | nosalt = 1; |
7e1b7485 RS |
199 | break; |
200 | case OPT_DEBUG: | |
0f113f3e | 201 | debug = 1; |
7e1b7485 RS |
202 | break; |
203 | case OPT_UPPER_P: | |
0f113f3e | 204 | printkey = 2; |
7e1b7485 RS |
205 | break; |
206 | case OPT_UPPER_A: | |
0f113f3e | 207 | olb64 = 1; |
7e1b7485 RS |
208 | break; |
209 | case OPT_A: | |
5f62e044 | 210 | base64 = 1; |
7e1b7485 RS |
211 | break; |
212 | case OPT_Z: | |
8931b30d | 213 | #ifdef ZLIB |
0f113f3e | 214 | do_zlib = 1; |
8931b30d | 215 | #endif |
7e1b7485 RS |
216 | break; |
217 | case OPT_BUFSIZE: | |
218 | p = opt_arg(); | |
219 | i = (int)strlen(p) - 1; | |
220 | k = i >= 1 && p[i] == 'k'; | |
221 | if (k) | |
222 | p[i] = '\0'; | |
bd4850df RS |
223 | if (!opt_long(opt_arg(), &n) |
224 | || n < 0 || (k && n >= LONG_MAX / 1024)) | |
7e1b7485 RS |
225 | goto opthelp; |
226 | if (k) | |
227 | n *= 1024; | |
228 | bsize = (int)n; | |
229 | break; | |
230 | case OPT_K: | |
231 | str = opt_arg(); | |
232 | break; | |
233 | case OPT_KFILE: | |
bdd58d98 | 234 | in = bio_open_default(opt_arg(), 'r', FORMAT_TEXT); |
7e1b7485 RS |
235 | if (in == NULL) |
236 | goto opthelp; | |
cbe29648 | 237 | i = BIO_gets(in, buf, sizeof(buf)); |
7e1b7485 RS |
238 | BIO_free(in); |
239 | in = NULL; | |
240 | if (i <= 0) { | |
241 | BIO_printf(bio_err, | |
242 | "%s Can't read key from %s\n", prog, opt_arg()); | |
243 | goto opthelp; | |
0f113f3e | 244 | } |
7e1b7485 RS |
245 | while (--i > 0 && (buf[i] == '\r' || buf[i] == '\n')) |
246 | buf[i] = '\0'; | |
247 | if (i <= 0) { | |
248 | BIO_printf(bio_err, "%s: zero length password\n", prog); | |
249 | goto opthelp; | |
0f113f3e MC |
250 | } |
251 | str = buf; | |
7e1b7485 RS |
252 | break; |
253 | case OPT_UPPER_K: | |
254 | hkey = opt_arg(); | |
255 | break; | |
256 | case OPT_UPPER_S: | |
257 | hsalt = opt_arg(); | |
258 | break; | |
259 | case OPT_IV: | |
260 | hiv = opt_arg(); | |
261 | break; | |
262 | case OPT_MD: | |
d0190e11 | 263 | digestname = opt_arg(); |
7e1b7485 | 264 | break; |
7e1b7485 | 265 | case OPT_CIPHER: |
50ca7e18 | 266 | ciphername = opt_unknown(); |
7e1b7485 | 267 | break; |
405988f2 | 268 | case OPT_ITER: |
d830526c | 269 | iter = opt_int_arg(); |
405988f2 E |
270 | pbkdf2 = 1; |
271 | break; | |
272 | case OPT_PBKDF2: | |
273 | pbkdf2 = 1; | |
274 | if (iter == 0) /* do not overwrite a chosen value */ | |
275 | iter = 10000; | |
276 | break; | |
7e1b7485 | 277 | case OPT_NONE: |
0f113f3e | 278 | cipher = NULL; |
7e1b7485 | 279 | break; |
3ee1eac2 RS |
280 | case OPT_R_CASES: |
281 | if (!opt_rand(o)) | |
282 | goto end; | |
283 | break; | |
6bd4e3f2 P |
284 | case OPT_PROV_CASES: |
285 | if (!opt_provider(o)) | |
286 | goto end; | |
287 | break; | |
0f113f3e | 288 | } |
0f113f3e | 289 | } |
021410ea RS |
290 | |
291 | /* No extra arguments. */ | |
292 | argc = opt_num_rest(); | |
293 | if (argc != 0) | |
c27363f5 | 294 | goto opthelp; |
3ad60309 DDO |
295 | if (!app_RAND_load()) |
296 | goto end; | |
d02b48c6 | 297 | |
50ca7e18 RS |
298 | /* Get the cipher name, either from progname (if set) or flag. */ |
299 | if (ciphername != NULL) { | |
300 | if (!opt_cipher(ciphername, &cipher)) | |
301 | goto opthelp; | |
302 | } | |
0f113f3e | 303 | if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) { |
7e1b7485 | 304 | BIO_printf(bio_err, "%s: AEAD ciphers not supported\n", prog); |
0f113f3e MC |
305 | goto end; |
306 | } | |
0f113f3e | 307 | if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) { |
7e1b7485 | 308 | BIO_printf(bio_err, "%s XTS ciphers not supported\n", prog); |
0f113f3e MC |
309 | goto end; |
310 | } | |
d0190e11 RS |
311 | if (digestname != NULL) { |
312 | if (!opt_md(digestname, &dgst)) | |
50ca7e18 RS |
313 | goto opthelp; |
314 | } | |
7e1b7485 | 315 | if (dgst == NULL) |
606a417f | 316 | dgst = (EVP_MD *)EVP_sha256(); |
0f113f3e | 317 | |
405988f2 E |
318 | if (iter == 0) |
319 | iter = 1; | |
320 | ||
7e1b7485 | 321 | /* It must be large enough for a base64 encoded line */ |
5f62e044 | 322 | if (base64 && bsize < 80) |
7e1b7485 RS |
323 | bsize = 80; |
324 | if (verbose) | |
325 | BIO_printf(bio_err, "bufsize=%d\n", bsize); | |
0f113f3e | 326 | |
802d2243 RL |
327 | #ifdef ZLIB |
328 | if (!do_zlib) | |
329 | #endif | |
330 | if (base64) { | |
331 | if (enc) | |
332 | outformat = FORMAT_BASE64; | |
333 | else | |
334 | informat = FORMAT_BASE64; | |
335 | } | |
5f62e044 | 336 | |
68dc6824 RS |
337 | strbuf = app_malloc(SIZE, "strbuf"); |
338 | buff = app_malloc(EVP_ENCODE_LENGTH(bsize), "evp buffer"); | |
0f113f3e | 339 | |
7e1b7485 | 340 | if (infile == NULL) { |
5f62e044 | 341 | in = dup_bio_in(informat); |
2234212c | 342 | } else { |
5f62e044 | 343 | in = bio_open_default(infile, 'r', informat); |
2234212c | 344 | } |
7e1b7485 RS |
345 | if (in == NULL) |
346 | goto end; | |
0f113f3e | 347 | |
2234212c | 348 | if (str == NULL && passarg != NULL) { |
7e1b7485 | 349 | if (!app_passwd(passarg, NULL, &pass, NULL)) { |
0f113f3e MC |
350 | BIO_printf(bio_err, "Error getting password\n"); |
351 | goto end; | |
352 | } | |
353 | str = pass; | |
354 | } | |
355 | ||
356 | if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) { | |
923b1857 | 357 | if (1) { |
48feaceb | 358 | #ifndef OPENSSL_NO_UI_CONSOLE |
923b1857 RL |
359 | for (;;) { |
360 | char prompt[200]; | |
0f113f3e | 361 | |
eee95522 | 362 | BIO_snprintf(prompt, sizeof(prompt), "enter %s %s password:", |
5050fd5b | 363 | EVP_CIPHER_name(cipher), |
0904e79a | 364 | (enc) ? "encryption" : "decryption"); |
923b1857 RL |
365 | strbuf[0] = '\0'; |
366 | i = EVP_read_pw_string((char *)strbuf, SIZE, prompt, enc); | |
367 | if (i == 0) { | |
368 | if (strbuf[0] == '\0') { | |
369 | ret = 1; | |
370 | goto end; | |
371 | } | |
372 | str = strbuf; | |
373 | break; | |
374 | } | |
375 | if (i < 0) { | |
376 | BIO_printf(bio_err, "bad password read\n"); | |
0f113f3e MC |
377 | goto end; |
378 | } | |
0f113f3e | 379 | } |
923b1857 RL |
380 | } else { |
381 | #endif | |
382 | BIO_printf(bio_err, "password required\n"); | |
383 | goto end; | |
0f113f3e MC |
384 | } |
385 | } | |
386 | ||
5f62e044 | 387 | out = bio_open_default(outfile, 'w', outformat); |
7e1b7485 RS |
388 | if (out == NULL) |
389 | goto end; | |
0f113f3e | 390 | |
7a82f778 | 391 | if (debug) { |
0800318a TM |
392 | BIO_set_callback_ex(in, BIO_debug_callback_ex); |
393 | BIO_set_callback_ex(out, BIO_debug_callback_ex); | |
7a82f778 RL |
394 | BIO_set_callback_arg(in, (char *)bio_err); |
395 | BIO_set_callback_arg(out, (char *)bio_err); | |
396 | } | |
397 | ||
0f113f3e MC |
398 | rbio = in; |
399 | wbio = out; | |
fd699ac5 | 400 | |
8931b30d | 401 | #ifdef ZLIB |
0f113f3e MC |
402 | if (do_zlib) { |
403 | if ((bzl = BIO_new(BIO_f_zlib())) == NULL) | |
404 | goto end; | |
7a82f778 | 405 | if (debug) { |
0800318a | 406 | BIO_set_callback_ex(bzl, BIO_debug_callback_ex); |
7a82f778 RL |
407 | BIO_set_callback_arg(bzl, (char *)bio_err); |
408 | } | |
0f113f3e MC |
409 | if (enc) |
410 | wbio = BIO_push(bzl, wbio); | |
411 | else | |
412 | rbio = BIO_push(bzl, rbio); | |
413 | } | |
8931b30d DSH |
414 | #endif |
415 | ||
5f62e044 | 416 | if (base64) { |
0f113f3e MC |
417 | if ((b64 = BIO_new(BIO_f_base64())) == NULL) |
418 | goto end; | |
419 | if (debug) { | |
0800318a | 420 | BIO_set_callback_ex(b64, BIO_debug_callback_ex); |
0f113f3e MC |
421 | BIO_set_callback_arg(b64, (char *)bio_err); |
422 | } | |
423 | if (olb64) | |
424 | BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); | |
425 | if (enc) | |
426 | wbio = BIO_push(b64, wbio); | |
427 | else | |
428 | rbio = BIO_push(b64, rbio); | |
429 | } | |
430 | ||
431 | if (cipher != NULL) { | |
c4c8791e | 432 | if (str != NULL) { /* a passphrase is available */ |
0f113f3e | 433 | /* |
c4c8791e E |
434 | * Salt handling: if encrypting generate a salt if not supplied, |
435 | * and write to output BIO. If decrypting use salt from input BIO | |
436 | * if not given with args | |
0f113f3e MC |
437 | */ |
438 | unsigned char *sptr; | |
f6c460e8 F |
439 | size_t str_len = strlen(str); |
440 | ||
2234212c | 441 | if (nosalt) { |
0f113f3e | 442 | sptr = NULL; |
2234212c | 443 | } else { |
c4c8791e E |
444 | if (hsalt != NULL && !set_hex(hsalt, salt, sizeof(salt))) { |
445 | BIO_printf(bio_err, "invalid hex salt value\n"); | |
446 | goto end; | |
447 | } | |
448 | if (enc) { /* encryption */ | |
449 | if (hsalt == NULL) { | |
450 | if (RAND_bytes(salt, sizeof(salt)) <= 0) { | |
451 | BIO_printf(bio_err, "RAND_bytes failed\n"); | |
452 | goto end; | |
453 | } | |
454 | /* | |
455 | * If -P option then don't bother writing. | |
456 | * If salt is given, shouldn't either ? | |
457 | */ | |
458 | if ((printkey != 2) | |
459 | && (BIO_write(wbio, magic, | |
460 | sizeof(magic) - 1) != sizeof(magic) - 1 | |
461 | || BIO_write(wbio, | |
462 | (char *)salt, | |
463 | sizeof(salt)) != sizeof(salt))) { | |
464 | BIO_printf(bio_err, "error writing output file\n"); | |
0f113f3e MC |
465 | goto end; |
466 | } | |
2234212c | 467 | } |
c4c8791e E |
468 | } else { /* decryption */ |
469 | if (hsalt == NULL) { | |
470 | if (BIO_read(rbio, mbuf, sizeof(mbuf)) != sizeof(mbuf)) { | |
471 | BIO_printf(bio_err, "error reading input file\n"); | |
472 | goto end; | |
473 | } | |
474 | if (memcmp(mbuf, magic, sizeof(mbuf)) == 0) { /* file IS salted */ | |
475 | if (BIO_read(rbio, salt, | |
476 | sizeof(salt)) != sizeof(salt)) { | |
477 | BIO_printf(bio_err, "error reading input file\n"); | |
478 | goto end; | |
479 | } | |
480 | } else { /* file is NOT salted, NO salt available */ | |
481 | BIO_printf(bio_err, "bad magic number\n"); | |
482 | goto end; | |
483 | } | |
0f113f3e | 484 | } |
0f113f3e | 485 | } |
0f113f3e MC |
486 | sptr = salt; |
487 | } | |
488 | ||
405988f2 E |
489 | if (pbkdf2 == 1) { |
490 | /* | |
491 | * derive key and default iv | |
492 | * concatenated into a temporary buffer | |
493 | */ | |
494 | unsigned char tmpkeyiv[EVP_MAX_KEY_LENGTH + EVP_MAX_IV_LENGTH]; | |
495 | int iklen = EVP_CIPHER_key_length(cipher); | |
496 | int ivlen = EVP_CIPHER_iv_length(cipher); | |
497 | /* not needed if HASH_UPDATE() is fixed : */ | |
498 | int islen = (sptr != NULL ? sizeof(salt) : 0); | |
499 | if (!PKCS5_PBKDF2_HMAC(str, str_len, sptr, islen, | |
500 | iter, dgst, iklen+ivlen, tmpkeyiv)) { | |
501 | BIO_printf(bio_err, "PKCS5_PBKDF2_HMAC failed\n"); | |
502 | goto end; | |
503 | } | |
504 | /* split and move data back to global buffer */ | |
505 | memcpy(key, tmpkeyiv, iklen); | |
506 | memcpy(iv, tmpkeyiv+iklen, ivlen); | |
507 | } else { | |
508 | BIO_printf(bio_err, "*** WARNING : " | |
509 | "deprecated key derivation used.\n" | |
510 | "Using -iter or -pbkdf2 would be better.\n"); | |
511 | if (!EVP_BytesToKey(cipher, dgst, sptr, | |
512 | (unsigned char *)str, str_len, | |
513 | 1, key, iv)) { | |
514 | BIO_printf(bio_err, "EVP_BytesToKey failed\n"); | |
515 | goto end; | |
516 | } | |
0f113f3e MC |
517 | } |
518 | /* | |
519 | * zero the complete buffer or the string passed from the command | |
e3713c36 | 520 | * line. |
0f113f3e MC |
521 | */ |
522 | if (str == strbuf) | |
523 | OPENSSL_cleanse(str, SIZE); | |
524 | else | |
f6c460e8 | 525 | OPENSSL_cleanse(str, str_len); |
0f113f3e | 526 | } |
8920a7cd RL |
527 | if (hiv != NULL) { |
528 | int siz = EVP_CIPHER_iv_length(cipher); | |
529 | if (siz == 0) { | |
9c119bc6 | 530 | BIO_printf(bio_err, "warning: iv not used by this cipher\n"); |
d5961b22 | 531 | } else if (!set_hex(hiv, iv, siz)) { |
8920a7cd RL |
532 | BIO_printf(bio_err, "invalid hex iv value\n"); |
533 | goto end; | |
534 | } | |
0f113f3e MC |
535 | } |
536 | if ((hiv == NULL) && (str == NULL) | |
537 | && EVP_CIPHER_iv_length(cipher) != 0) { | |
538 | /* | |
405988f2 E |
539 | * No IV was explicitly set and no IV was generated. |
540 | * Hence the IV is undefined, making correct decryption impossible. | |
0f113f3e MC |
541 | */ |
542 | BIO_printf(bio_err, "iv undefined\n"); | |
543 | goto end; | |
544 | } | |
1f83edda E |
545 | if (hkey != NULL) { |
546 | if (!set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) { | |
547 | BIO_printf(bio_err, "invalid hex key value\n"); | |
548 | goto end; | |
549 | } | |
550 | /* wiping secret data as we no longer need it */ | |
6d382c74 | 551 | cleanse(hkey); |
0f113f3e MC |
552 | } |
553 | ||
554 | if ((benc = BIO_new(BIO_f_cipher())) == NULL) | |
555 | goto end; | |
556 | ||
557 | /* | |
558 | * Since we may be changing parameters work on the encryption context | |
559 | * rather than calling BIO_set_cipher(). | |
560 | */ | |
561 | ||
562 | BIO_get_cipher_ctx(benc, &ctx); | |
563 | ||
1d864f0f | 564 | if (!EVP_CipherInit_ex(ctx, cipher, e, NULL, NULL, enc)) { |
0f113f3e MC |
565 | BIO_printf(bio_err, "Error setting cipher %s\n", |
566 | EVP_CIPHER_name(cipher)); | |
567 | ERR_print_errors(bio_err); | |
568 | goto end; | |
569 | } | |
570 | ||
571 | if (nopad) | |
572 | EVP_CIPHER_CTX_set_padding(ctx, 0); | |
573 | ||
574 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) { | |
575 | BIO_printf(bio_err, "Error setting cipher %s\n", | |
576 | EVP_CIPHER_name(cipher)); | |
577 | ERR_print_errors(bio_err); | |
578 | goto end; | |
579 | } | |
580 | ||
581 | if (debug) { | |
0800318a | 582 | BIO_set_callback_ex(benc, BIO_debug_callback_ex); |
0f113f3e MC |
583 | BIO_set_callback_arg(benc, (char *)bio_err); |
584 | } | |
585 | ||
586 | if (printkey) { | |
587 | if (!nosalt) { | |
588 | printf("salt="); | |
589 | for (i = 0; i < (int)sizeof(salt); i++) | |
590 | printf("%02X", salt[i]); | |
591 | printf("\n"); | |
592 | } | |
6c2ff56e | 593 | if (EVP_CIPHER_key_length(cipher) > 0) { |
0f113f3e | 594 | printf("key="); |
6c2ff56e | 595 | for (i = 0; i < EVP_CIPHER_key_length(cipher); i++) |
0f113f3e MC |
596 | printf("%02X", key[i]); |
597 | printf("\n"); | |
598 | } | |
6c2ff56e | 599 | if (EVP_CIPHER_iv_length(cipher) > 0) { |
0f113f3e | 600 | printf("iv ="); |
6c2ff56e | 601 | for (i = 0; i < EVP_CIPHER_iv_length(cipher); i++) |
0f113f3e MC |
602 | printf("%02X", iv[i]); |
603 | printf("\n"); | |
604 | } | |
605 | if (printkey == 2) { | |
606 | ret = 0; | |
607 | goto end; | |
608 | } | |
609 | } | |
610 | } | |
611 | ||
612 | /* Only encrypt/decrypt as we write the file */ | |
613 | if (benc != NULL) | |
614 | wbio = BIO_push(benc, wbio); | |
615 | ||
8ed7bbb4 | 616 | while (BIO_pending(rbio) || !BIO_eof(rbio)) { |
0f113f3e MC |
617 | inl = BIO_read(rbio, (char *)buff, bsize); |
618 | if (inl <= 0) | |
619 | break; | |
620 | if (BIO_write(wbio, (char *)buff, inl) != inl) { | |
621 | BIO_printf(bio_err, "error writing output file\n"); | |
622 | goto end; | |
623 | } | |
624 | } | |
625 | if (!BIO_flush(wbio)) { | |
626 | BIO_printf(bio_err, "bad decrypt\n"); | |
627 | goto end; | |
628 | } | |
629 | ||
630 | ret = 0; | |
631 | if (verbose) { | |
12997aa9 RS |
632 | BIO_printf(bio_err, "bytes read : %8ju\n", BIO_number_read(in)); |
633 | BIO_printf(bio_err, "bytes written: %8ju\n", BIO_number_written(out)); | |
0f113f3e MC |
634 | } |
635 | end: | |
636 | ERR_print_errors(bio_err); | |
b548a1f1 RS |
637 | OPENSSL_free(strbuf); |
638 | OPENSSL_free(buff); | |
ca3a82c3 RS |
639 | BIO_free(in); |
640 | BIO_free_all(out); | |
641 | BIO_free(benc); | |
642 | BIO_free(b64); | |
606a417f RS |
643 | EVP_MD_free(dgst); |
644 | EVP_CIPHER_free(cipher); | |
8931b30d | 645 | #ifdef ZLIB |
ca3a82c3 | 646 | BIO_free(bzl); |
8931b30d | 647 | #endif |
dd1abd44 | 648 | release_engine(e); |
b548a1f1 | 649 | OPENSSL_free(pass); |
eee95522 | 650 | return ret; |
7e1b7485 RS |
651 | } |
652 | ||
2b305ab0 | 653 | static void show_ciphers(const OBJ_NAME *name, void *arg) |
7e1b7485 | 654 | { |
2b305ab0 | 655 | struct doall_enc_ciphers *dec = (struct doall_enc_ciphers *)arg; |
777f1708 | 656 | const EVP_CIPHER *cipher; |
7e1b7485 RS |
657 | |
658 | if (!islower((unsigned char)*name->name)) | |
659 | return; | |
660 | ||
777f1708 P |
661 | /* Filter out ciphers that we cannot use */ |
662 | cipher = EVP_get_cipherbyname(name->name); | |
663 | if (cipher == NULL || | |
664 | (EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) != 0 || | |
665 | EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE) | |
666 | return; | |
667 | ||
2b305ab0 P |
668 | BIO_printf(dec->bio, "-%-25s", name->name); |
669 | if (++dec->n == 3) { | |
670 | BIO_printf(dec->bio, "\n"); | |
671 | dec->n = 0; | |
7e1b7485 | 672 | } else |
2b305ab0 | 673 | BIO_printf(dec->bio, " "); |
0f113f3e | 674 | } |
d02b48c6 | 675 | |
d5961b22 | 676 | static int set_hex(const char *in, unsigned char *out, int size) |
0f113f3e MC |
677 | { |
678 | int i, n; | |
679 | unsigned char j; | |
680 | ||
d5961b22 | 681 | i = size * 2; |
0f113f3e | 682 | n = strlen(in); |
d5961b22 E |
683 | if (n > i) { |
684 | BIO_printf(bio_err, "hex string is too long, ignoring excess\n"); | |
685 | n = i; /* ignore exceeding part */ | |
686 | } else if (n < i) { | |
687 | BIO_printf(bio_err, "hex string is too short, padding with zero bytes to length\n"); | |
0f113f3e | 688 | } |
d5961b22 | 689 | |
0f113f3e MC |
690 | memset(out, 0, size); |
691 | for (i = 0; i < n; i++) { | |
d5961b22 | 692 | j = (unsigned char)*in++; |
2fa45e6e | 693 | if (!isxdigit(j)) { |
0f113f3e | 694 | BIO_printf(bio_err, "non-hex digit\n"); |
eee95522 | 695 | return 0; |
0f113f3e | 696 | } |
14f051a0 | 697 | j = (unsigned char)OPENSSL_hexchar2int(j); |
0f113f3e MC |
698 | if (i & 1) |
699 | out[i / 2] |= j; | |
700 | else | |
701 | out[i / 2] = (j << 4); | |
702 | } | |
eee95522 | 703 | return 1; |
0f113f3e | 704 | } |