source: EcnlProtoTool/trunk/openssl-1.1.0e/apps/enc.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 18.0 KB
Line 
1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
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
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <limits.h>
14#include "apps.h"
15#include <openssl/bio.h>
16#include <openssl/err.h>
17#include <openssl/evp.h>
18#include <openssl/objects.h>
19#include <openssl/x509.h>
20#include <openssl/rand.h>
21#include <openssl/pem.h>
22#ifndef OPENSSL_NO_COMP
23# include <openssl/comp.h>
24#endif
25#include <ctype.h>
26
27#undef SIZE
28#undef BSIZE
29#define SIZE (512)
30#define BSIZE (8*1024)
31
32static int set_hex(char *in, unsigned char *out, int size);
33static void show_ciphers(const OBJ_NAME *name, void *bio_);
34
35typedef enum OPTION_choice {
36 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
37 OPT_LIST,
38 OPT_E, OPT_IN, OPT_OUT, OPT_PASS, OPT_ENGINE, OPT_D, OPT_P, OPT_V,
39 OPT_NOPAD, OPT_SALT, OPT_NOSALT, OPT_DEBUG, OPT_UPPER_P, OPT_UPPER_A,
40 OPT_A, OPT_Z, OPT_BUFSIZE, OPT_K, OPT_KFILE, OPT_UPPER_K, OPT_NONE,
41 OPT_UPPER_S, OPT_IV, OPT_MD, OPT_CIPHER
42} OPTION_CHOICE;
43
44OPTIONS enc_options[] = {
45 {"help", OPT_HELP, '-', "Display this summary"},
46 {"ciphers", OPT_LIST, '-', "List ciphers"},
47 {"in", OPT_IN, '<', "Input file"},
48 {"out", OPT_OUT, '>', "Output file"},
49 {"pass", OPT_PASS, 's', "Passphrase source"},
50 {"e", OPT_E, '-', "Encrypt"},
51 {"d", OPT_D, '-', "Decrypt"},
52 {"p", OPT_P, '-', "Print the iv/key"},
53 {"P", OPT_UPPER_P, '-', "Print the iv/key and exit"},
54 {"v", OPT_V, '-', "Verbose output"},
55 {"nopad", OPT_NOPAD, '-', "Disable standard block padding"},
56 {"salt", OPT_SALT, '-', "Use salt in the KDF (default)"},
57 {"nosalt", OPT_NOSALT, '-', "Do not use salt in the KDF"},
58 {"debug", OPT_DEBUG, '-', "Print debug info"},
59 {"a", OPT_A, '-', "Base64 encode/decode, depending on encryption flag"},
60 {"base64", OPT_A, '-', "Same as option -a"},
61 {"A", OPT_UPPER_A, '-',
62 "Used with -[base64|a] to specify base64 buffer as a single line"},
63 {"bufsize", OPT_BUFSIZE, 's', "Buffer size"},
64 {"k", OPT_K, 's', "Passphrase"},
65 {"kfile", OPT_KFILE, '<', "Read passphrase from file"},
66 {"K", OPT_UPPER_K, 's', "Raw key, in hex"},
67 {"S", OPT_UPPER_S, 's', "Salt, in hex"},
68 {"iv", OPT_IV, 's', "IV in hex"},
69 {"md", OPT_MD, 's', "Use specified digest to create a key from the passphrase"},
70 {"none", OPT_NONE, '-', "Don't encrypt"},
71 {"", OPT_CIPHER, '-', "Any supported cipher"},
72#ifdef ZLIB
73 {"z", OPT_Z, '-', "Use zlib as the 'encryption'"},
74#endif
75#ifndef OPENSSL_NO_ENGINE
76 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
77#endif
78 {NULL}
79};
80
81int enc_main(int argc, char **argv)
82{
83 static char buf[128];
84 static const char magic[] = "Salted__";
85 ENGINE *e = NULL;
86 BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio =
87 NULL, *wbio = NULL;
88 EVP_CIPHER_CTX *ctx = NULL;
89 const EVP_CIPHER *cipher = NULL, *c;
90 const EVP_MD *dgst = NULL;
91 char *hkey = NULL, *hiv = NULL, *hsalt = NULL, *p;
92 char *infile = NULL, *outfile = NULL, *prog;
93 char *str = NULL, *passarg = NULL, *pass = NULL, *strbuf = NULL;
94 char mbuf[sizeof magic - 1];
95 OPTION_CHOICE o;
96 int bsize = BSIZE, verbose = 0, debug = 0, olb64 = 0, nosalt = 0;
97 int enc = 1, printkey = 0, i, k;
98 int base64 = 0, informat = FORMAT_BINARY, outformat = FORMAT_BINARY;
99 int ret = 1, inl, nopad = 0;
100 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
101 unsigned char *buff = NULL, salt[PKCS5_SALT_LEN];
102 long n;
103#ifdef ZLIB
104 int do_zlib = 0;
105 BIO *bzl = NULL;
106#endif
107
108 /* first check the program name */
109 prog = opt_progname(argv[0]);
110 if (strcmp(prog, "base64") == 0)
111 base64 = 1;
112#ifdef ZLIB
113 else if (strcmp(prog, "zlib") == 0)
114 do_zlib = 1;
115#endif
116 else {
117 cipher = EVP_get_cipherbyname(prog);
118 if (cipher == NULL && strcmp(prog, "enc") != 0) {
119 BIO_printf(bio_err, "%s is not a known cipher\n", prog);
120 goto end;
121 }
122 }
123
124 prog = opt_init(argc, argv, enc_options);
125 while ((o = opt_next()) != OPT_EOF) {
126 switch (o) {
127 case OPT_EOF:
128 case OPT_ERR:
129 opthelp:
130 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
131 goto end;
132 case OPT_HELP:
133 opt_help(enc_options);
134 ret = 0;
135 goto end;
136 case OPT_LIST:
137 BIO_printf(bio_err, "Supported ciphers:\n");
138 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
139 show_ciphers, bio_err);
140 BIO_printf(bio_err, "\n");
141 goto end;
142 case OPT_E:
143 enc = 1;
144 break;
145 case OPT_IN:
146 infile = opt_arg();
147 break;
148 case OPT_OUT:
149 outfile = opt_arg();
150 break;
151 case OPT_PASS:
152 passarg = opt_arg();
153 break;
154 case OPT_ENGINE:
155 e = setup_engine(opt_arg(), 0);
156 break;
157 case OPT_D:
158 enc = 0;
159 break;
160 case OPT_P:
161 printkey = 1;
162 break;
163 case OPT_V:
164 verbose = 1;
165 break;
166 case OPT_NOPAD:
167 nopad = 1;
168 break;
169 case OPT_SALT:
170 nosalt = 0;
171 break;
172 case OPT_NOSALT:
173 nosalt = 1;
174 break;
175 case OPT_DEBUG:
176 debug = 1;
177 break;
178 case OPT_UPPER_P:
179 printkey = 2;
180 break;
181 case OPT_UPPER_A:
182 olb64 = 1;
183 break;
184 case OPT_A:
185 base64 = 1;
186 break;
187 case OPT_Z:
188#ifdef ZLIB
189 do_zlib = 1;
190#endif
191 break;
192 case OPT_BUFSIZE:
193 p = opt_arg();
194 i = (int)strlen(p) - 1;
195 k = i >= 1 && p[i] == 'k';
196 if (k)
197 p[i] = '\0';
198 if (!opt_long(opt_arg(), &n)
199 || n < 0 || (k && n >= LONG_MAX / 1024))
200 goto opthelp;
201 if (k)
202 n *= 1024;
203 bsize = (int)n;
204 break;
205 case OPT_K:
206 str = opt_arg();
207 break;
208 case OPT_KFILE:
209 in = bio_open_default(opt_arg(), 'r', FORMAT_TEXT);
210 if (in == NULL)
211 goto opthelp;
212 i = BIO_gets(in, buf, sizeof buf);
213 BIO_free(in);
214 in = NULL;
215 if (i <= 0) {
216 BIO_printf(bio_err,
217 "%s Can't read key from %s\n", prog, opt_arg());
218 goto opthelp;
219 }
220 while (--i > 0 && (buf[i] == '\r' || buf[i] == '\n'))
221 buf[i] = '\0';
222 if (i <= 0) {
223 BIO_printf(bio_err, "%s: zero length password\n", prog);
224 goto opthelp;
225 }
226 str = buf;
227 break;
228 case OPT_UPPER_K:
229 hkey = opt_arg();
230 break;
231 case OPT_UPPER_S:
232 hsalt = opt_arg();
233 break;
234 case OPT_IV:
235 hiv = opt_arg();
236 break;
237 case OPT_MD:
238 if (!opt_md(opt_arg(), &dgst))
239 goto opthelp;
240 break;
241 case OPT_CIPHER:
242 if (!opt_cipher(opt_unknown(), &c))
243 goto opthelp;
244 cipher = c;
245 break;
246 case OPT_NONE:
247 cipher = NULL;
248 break;
249 }
250 }
251
252 if (cipher && EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER) {
253 BIO_printf(bio_err, "%s: AEAD ciphers not supported\n", prog);
254 goto end;
255 }
256
257 if (cipher && (EVP_CIPHER_mode(cipher) == EVP_CIPH_XTS_MODE)) {
258 BIO_printf(bio_err, "%s XTS ciphers not supported\n", prog);
259 goto end;
260 }
261
262 if (dgst == NULL)
263 dgst = EVP_sha256();
264
265 /* It must be large enough for a base64 encoded line */
266 if (base64 && bsize < 80)
267 bsize = 80;
268 if (verbose)
269 BIO_printf(bio_err, "bufsize=%d\n", bsize);
270
271#ifdef ZLIB
272 if (!do_zlib)
273#endif
274 if (base64) {
275 if (enc)
276 outformat = FORMAT_BASE64;
277 else
278 informat = FORMAT_BASE64;
279 }
280
281 strbuf = app_malloc(SIZE, "strbuf");
282 buff = app_malloc(EVP_ENCODE_LENGTH(bsize), "evp buffer");
283
284 if (infile == NULL) {
285 unbuffer(stdin);
286 in = dup_bio_in(informat);
287 } else
288 in = bio_open_default(infile, 'r', informat);
289 if (in == NULL)
290 goto end;
291
292 if (!str && passarg) {
293 if (!app_passwd(passarg, NULL, &pass, NULL)) {
294 BIO_printf(bio_err, "Error getting password\n");
295 goto end;
296 }
297 str = pass;
298 }
299
300 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
301 if (1) {
302#ifndef OPENSSL_NO_UI
303 for (;;) {
304 char prompt[200];
305
306 BIO_snprintf(prompt, sizeof prompt, "enter %s %s password:",
307 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
308 (enc) ? "encryption" : "decryption");
309 strbuf[0] = '\0';
310 i = EVP_read_pw_string((char *)strbuf, SIZE, prompt, enc);
311 if (i == 0) {
312 if (strbuf[0] == '\0') {
313 ret = 1;
314 goto end;
315 }
316 str = strbuf;
317 break;
318 }
319 if (i < 0) {
320 BIO_printf(bio_err, "bad password read\n");
321 goto end;
322 }
323 }
324 } else {
325#endif
326 BIO_printf(bio_err, "password required\n");
327 goto end;
328 }
329 }
330
331 out = bio_open_default(outfile, 'w', outformat);
332 if (out == NULL)
333 goto end;
334
335 if (debug) {
336 BIO_set_callback(in, BIO_debug_callback);
337 BIO_set_callback(out, BIO_debug_callback);
338 BIO_set_callback_arg(in, (char *)bio_err);
339 BIO_set_callback_arg(out, (char *)bio_err);
340 }
341
342 rbio = in;
343 wbio = out;
344
345#ifdef ZLIB
346 if (do_zlib) {
347 if ((bzl = BIO_new(BIO_f_zlib())) == NULL)
348 goto end;
349 if (debug) {
350 BIO_set_callback(bzl, BIO_debug_callback);
351 BIO_set_callback_arg(bzl, (char *)bio_err);
352 }
353 if (enc)
354 wbio = BIO_push(bzl, wbio);
355 else
356 rbio = BIO_push(bzl, rbio);
357 }
358#endif
359
360 if (base64) {
361 if ((b64 = BIO_new(BIO_f_base64())) == NULL)
362 goto end;
363 if (debug) {
364 BIO_set_callback(b64, BIO_debug_callback);
365 BIO_set_callback_arg(b64, (char *)bio_err);
366 }
367 if (olb64)
368 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
369 if (enc)
370 wbio = BIO_push(b64, wbio);
371 else
372 rbio = BIO_push(b64, rbio);
373 }
374
375 if (cipher != NULL) {
376 /*
377 * Note that str is NULL if a key was passed on the command line, so
378 * we get no salt in that case. Is this a bug?
379 */
380 if (str != NULL) {
381 /*
382 * Salt handling: if encrypting generate a salt and write to
383 * output BIO. If decrypting read salt from input BIO.
384 */
385 unsigned char *sptr;
386 size_t str_len = strlen(str);
387
388 if (nosalt)
389 sptr = NULL;
390 else {
391 if (enc) {
392 if (hsalt) {
393 if (!set_hex(hsalt, salt, sizeof salt)) {
394 BIO_printf(bio_err, "invalid hex salt value\n");
395 goto end;
396 }
397 } else if (RAND_bytes(salt, sizeof salt) <= 0)
398 goto end;
399 /*
400 * If -P option then don't bother writing
401 */
402 if ((printkey != 2)
403 && (BIO_write(wbio, magic,
404 sizeof magic - 1) != sizeof magic - 1
405 || BIO_write(wbio,
406 (char *)salt,
407 sizeof salt) != sizeof salt)) {
408 BIO_printf(bio_err, "error writing output file\n");
409 goto end;
410 }
411 } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf
412 || BIO_read(rbio,
413 (unsigned char *)salt,
414 sizeof salt) != sizeof salt) {
415 BIO_printf(bio_err, "error reading input file\n");
416 goto end;
417 } else if (memcmp(mbuf, magic, sizeof magic - 1)) {
418 BIO_printf(bio_err, "bad magic number\n");
419 goto end;
420 }
421
422 sptr = salt;
423 }
424
425 if (!EVP_BytesToKey(cipher, dgst, sptr,
426 (unsigned char *)str,
427 str_len, 1, key, iv)) {
428 BIO_printf(bio_err, "EVP_BytesToKey failed\n");
429 goto end;
430 }
431 /*
432 * zero the complete buffer or the string passed from the command
433 * line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu>
434 */
435 if (str == strbuf)
436 OPENSSL_cleanse(str, SIZE);
437 else
438 OPENSSL_cleanse(str, str_len);
439 }
440 if (hiv != NULL) {
441 int siz = EVP_CIPHER_iv_length(cipher);
442 if (siz == 0) {
443 BIO_printf(bio_err, "warning: iv not use by this cipher\n");
444 } else if (!set_hex(hiv, iv, sizeof iv)) {
445 BIO_printf(bio_err, "invalid hex iv value\n");
446 goto end;
447 }
448 }
449 if ((hiv == NULL) && (str == NULL)
450 && EVP_CIPHER_iv_length(cipher) != 0) {
451 /*
452 * No IV was explicitly set and no IV was generated during
453 * EVP_BytesToKey. Hence the IV is undefined, making correct
454 * decryption impossible.
455 */
456 BIO_printf(bio_err, "iv undefined\n");
457 goto end;
458 }
459 if ((hkey != NULL) && !set_hex(hkey, key, EVP_CIPHER_key_length(cipher))) {
460 BIO_printf(bio_err, "invalid hex key value\n");
461 goto end;
462 }
463
464 if ((benc = BIO_new(BIO_f_cipher())) == NULL)
465 goto end;
466
467 /*
468 * Since we may be changing parameters work on the encryption context
469 * rather than calling BIO_set_cipher().
470 */
471
472 BIO_get_cipher_ctx(benc, &ctx);
473
474 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
475 BIO_printf(bio_err, "Error setting cipher %s\n",
476 EVP_CIPHER_name(cipher));
477 ERR_print_errors(bio_err);
478 goto end;
479 }
480
481 if (nopad)
482 EVP_CIPHER_CTX_set_padding(ctx, 0);
483
484 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
485 BIO_printf(bio_err, "Error setting cipher %s\n",
486 EVP_CIPHER_name(cipher));
487 ERR_print_errors(bio_err);
488 goto end;
489 }
490
491 if (debug) {
492 BIO_set_callback(benc, BIO_debug_callback);
493 BIO_set_callback_arg(benc, (char *)bio_err);
494 }
495
496 if (printkey) {
497 if (!nosalt) {
498 printf("salt=");
499 for (i = 0; i < (int)sizeof(salt); i++)
500 printf("%02X", salt[i]);
501 printf("\n");
502 }
503 if (EVP_CIPHER_key_length(cipher) > 0) {
504 printf("key=");
505 for (i = 0; i < EVP_CIPHER_key_length(cipher); i++)
506 printf("%02X", key[i]);
507 printf("\n");
508 }
509 if (EVP_CIPHER_iv_length(cipher) > 0) {
510 printf("iv =");
511 for (i = 0; i < EVP_CIPHER_iv_length(cipher); i++)
512 printf("%02X", iv[i]);
513 printf("\n");
514 }
515 if (printkey == 2) {
516 ret = 0;
517 goto end;
518 }
519 }
520 }
521
522 /* Only encrypt/decrypt as we write the file */
523 if (benc != NULL)
524 wbio = BIO_push(benc, wbio);
525
526 for (;;) {
527 inl = BIO_read(rbio, (char *)buff, bsize);
528 if (inl <= 0)
529 break;
530 if (BIO_write(wbio, (char *)buff, inl) != inl) {
531 BIO_printf(bio_err, "error writing output file\n");
532 goto end;
533 }
534 }
535 if (!BIO_flush(wbio)) {
536 BIO_printf(bio_err, "bad decrypt\n");
537 goto end;
538 }
539
540 ret = 0;
541 if (verbose) {
542 BIO_printf(bio_err, "bytes read :%8"PRIu64"\n", BIO_number_read(in));
543 BIO_printf(bio_err, "bytes written:%8"PRIu64"\n", BIO_number_written(out));
544 }
545 end:
546 ERR_print_errors(bio_err);
547 OPENSSL_free(strbuf);
548 OPENSSL_free(buff);
549 BIO_free(in);
550 BIO_free_all(out);
551 BIO_free(benc);
552 BIO_free(b64);
553#ifdef ZLIB
554 BIO_free(bzl);
555#endif
556 release_engine(e);
557 OPENSSL_free(pass);
558 return (ret);
559}
560
561static void show_ciphers(const OBJ_NAME *name, void *bio_)
562{
563 BIO *bio = bio_;
564 static int n;
565
566 if (!islower((unsigned char)*name->name))
567 return;
568
569 BIO_printf(bio, "-%-25s", name->name);
570 if (++n == 3) {
571 BIO_printf(bio, "\n");
572 n = 0;
573 } else
574 BIO_printf(bio, " ");
575}
576
577static int set_hex(char *in, unsigned char *out, int size)
578{
579 int i, n;
580 unsigned char j;
581
582 n = strlen(in);
583 if (n > (size * 2)) {
584 BIO_printf(bio_err, "hex string is too long\n");
585 return (0);
586 }
587 memset(out, 0, size);
588 for (i = 0; i < n; i++) {
589 j = (unsigned char)*in;
590 *(in++) = '\0';
591 if (j == 0)
592 break;
593 if (!isxdigit(j)) {
594 BIO_printf(bio_err, "non-hex digit\n");
595 return (0);
596 }
597 j = (unsigned char)OPENSSL_hexchar2int(j);
598 if (i & 1)
599 out[i / 2] |= j;
600 else
601 out[i / 2] = (j << 4);
602 }
603 return (1);
604}
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