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-rw-r--r--src/usr.bin/openssl/enc.c649
1 files changed, 649 insertions, 0 deletions
diff --git a/src/usr.bin/openssl/enc.c b/src/usr.bin/openssl/enc.c
new file mode 100644
index 0000000000..eff49818f9
--- /dev/null
+++ b/src/usr.bin/openssl/enc.c
@@ -0,0 +1,649 @@
1/* $OpenBSD: enc.c,v 1.1 2014/08/26 17:47:24 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
8 *
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).
15 *
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.
22 *
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 :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
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.
52 *
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 <ctype.h>
60#include <stdio.h>
61#include <stdlib.h>
62#include <string.h>
63
64#include "apps.h"
65
66#include <openssl/bio.h>
67#include <openssl/comp.h>
68#include <openssl/err.h>
69#include <openssl/evp.h>
70#include <openssl/objects.h>
71#include <openssl/pem.h>
72#include <openssl/rand.h>
73#include <openssl/x509.h>
74
75int set_hex(char *in, unsigned char *out, int size);
76
77#define SIZE (512)
78#define BSIZE (8*1024)
79#define PROG enc_main
80
81static void
82show_ciphers(const OBJ_NAME * name, void *bio_)
83{
84 BIO *bio = bio_;
85 static int n;
86
87 if (!islower((unsigned char) *name->name))
88 return;
89
90 BIO_printf(bio, "-%-25s", name->name);
91 if (++n == 3) {
92 BIO_printf(bio, "\n");
93 n = 0;
94 } else
95 BIO_printf(bio, " ");
96}
97
98int enc_main(int, char **);
99
100int
101enc_main(int argc, char **argv)
102{
103 static const char magic[] = "Salted__";
104 char mbuf[sizeof magic - 1];
105 char *strbuf = NULL;
106 unsigned char *buff = NULL, *bufsize = NULL;
107 int bsize = BSIZE, verbose = 0;
108 int ret = 1, inl;
109 int nopad = 0;
110 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
111 unsigned char salt[PKCS5_SALT_LEN];
112 char *str = NULL, *passarg = NULL, *pass = NULL;
113 char *hkey = NULL, *hiv = NULL, *hsalt = NULL;
114 char *md = NULL;
115 int enc = 1, printkey = 0, i, base64 = 0;
116#ifdef ZLIB
117 int do_zlib = 0;
118 BIO *bzl = NULL;
119#endif
120 int debug = 0, olb64 = 0, nosalt = 0;
121 const EVP_CIPHER *cipher = NULL, *c;
122 EVP_CIPHER_CTX *ctx = NULL;
123 char *inf = NULL, *outf = NULL;
124 BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio = NULL,
125 *wbio = NULL;
126#define PROG_NAME_SIZE 39
127 char pname[PROG_NAME_SIZE + 1];
128#ifndef OPENSSL_NO_ENGINE
129 char *engine = NULL;
130#endif
131 const EVP_MD *dgst = NULL;
132
133 /* first check the program name */
134 program_name(argv[0], pname, sizeof pname);
135 if (strcmp(pname, "base64") == 0)
136 base64 = 1;
137#ifdef ZLIB
138 if (strcmp(pname, "zlib") == 0)
139 do_zlib = 1;
140#endif
141
142 cipher = EVP_get_cipherbyname(pname);
143#ifdef ZLIB
144 if (!do_zlib && !base64 && (cipher == NULL)
145 && (strcmp(pname, "enc") != 0))
146#else
147 if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0))
148#endif
149 {
150 BIO_printf(bio_err, "%s is an unknown cipher\n", pname);
151 goto bad;
152 }
153 argc--;
154 argv++;
155 while (argc >= 1) {
156 if (strcmp(*argv, "-e") == 0)
157 enc = 1;
158 else if (strcmp(*argv, "-in") == 0) {
159 if (--argc < 1)
160 goto bad;
161 inf = *(++argv);
162 } else if (strcmp(*argv, "-out") == 0) {
163 if (--argc < 1)
164 goto bad;
165 outf = *(++argv);
166 } else if (strcmp(*argv, "-pass") == 0) {
167 if (--argc < 1)
168 goto bad;
169 passarg = *(++argv);
170 }
171#ifndef OPENSSL_NO_ENGINE
172 else if (strcmp(*argv, "-engine") == 0) {
173 if (--argc < 1)
174 goto bad;
175 engine = *(++argv);
176 }
177#endif
178 else if (strcmp(*argv, "-d") == 0)
179 enc = 0;
180 else if (strcmp(*argv, "-p") == 0)
181 printkey = 1;
182 else if (strcmp(*argv, "-v") == 0)
183 verbose = 1;
184 else if (strcmp(*argv, "-nopad") == 0)
185 nopad = 1;
186 else if (strcmp(*argv, "-salt") == 0)
187 nosalt = 0;
188 else if (strcmp(*argv, "-nosalt") == 0)
189 nosalt = 1;
190 else if (strcmp(*argv, "-debug") == 0)
191 debug = 1;
192 else if (strcmp(*argv, "-P") == 0)
193 printkey = 2;
194 else if (strcmp(*argv, "-A") == 0)
195 olb64 = 1;
196 else if (strcmp(*argv, "-a") == 0)
197 base64 = 1;
198 else if (strcmp(*argv, "-base64") == 0)
199 base64 = 1;
200#ifdef ZLIB
201 else if (strcmp(*argv, "-z") == 0)
202 do_zlib = 1;
203#endif
204 else if (strcmp(*argv, "-bufsize") == 0) {
205 if (--argc < 1)
206 goto bad;
207 bufsize = (unsigned char *) *(++argv);
208 } else if (strcmp(*argv, "-k") == 0) {
209 if (--argc < 1)
210 goto bad;
211 str = *(++argv);
212 } else if (strcmp(*argv, "-kfile") == 0) {
213 static char buf[128];
214 FILE *infile;
215 char *file;
216
217 if (--argc < 1)
218 goto bad;
219 file = *(++argv);
220 infile = fopen(file, "r");
221 if (infile == NULL) {
222 BIO_printf(bio_err, "unable to read key from '%s'\n",
223 file);
224 goto bad;
225 }
226 buf[0] = '\0';
227 if (!fgets(buf, sizeof buf, infile)) {
228 BIO_printf(bio_err, "unable to read key from '%s'\n",
229 file);
230 fclose(infile);
231 goto bad;
232 }
233 fclose(infile);
234 i = strlen(buf);
235 if ((i > 0) &&
236 ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
237 buf[--i] = '\0';
238 if ((i > 0) &&
239 ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
240 buf[--i] = '\0';
241 if (i < 1) {
242 BIO_printf(bio_err, "zero length password\n");
243 goto bad;
244 }
245 str = buf;
246 } else if (strcmp(*argv, "-K") == 0) {
247 if (--argc < 1)
248 goto bad;
249 hkey = *(++argv);
250 } else if (strcmp(*argv, "-S") == 0) {
251 if (--argc < 1)
252 goto bad;
253 hsalt = *(++argv);
254 } else if (strcmp(*argv, "-iv") == 0) {
255 if (--argc < 1)
256 goto bad;
257 hiv = *(++argv);
258 } else if (strcmp(*argv, "-md") == 0) {
259 if (--argc < 1)
260 goto bad;
261 md = *(++argv);
262 } else if ((argv[0][0] == '-') &&
263 ((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) {
264 cipher = c;
265 } else if (strcmp(*argv, "-none") == 0)
266 cipher = NULL;
267 else {
268 BIO_printf(bio_err, "unknown option '%s'\n", *argv);
269 bad:
270 BIO_printf(bio_err, "options are\n");
271 BIO_printf(bio_err, "%-14s input file\n", "-in <file>");
272 BIO_printf(bio_err, "%-14s output file\n", "-out <file>");
273 BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>");
274 BIO_printf(bio_err, "%-14s encrypt\n", "-e");
275 BIO_printf(bio_err, "%-14s decrypt\n", "-d");
276 BIO_printf(bio_err, "%-14s base64 encode/decode, depending on encryption flag\n", "-a/-base64");
277 BIO_printf(bio_err, "%-14s passphrase is the next argument\n", "-k");
278 BIO_printf(bio_err, "%-14s passphrase is the first line of the file argument\n", "-kfile");
279 BIO_printf(bio_err, "%-14s the next argument is the md to use to create a key\n", "-md");
280 BIO_printf(bio_err, "%-14s from a passphrase. One of md2, md5, sha or sha1\n", "");
281 BIO_printf(bio_err, "%-14s salt in hex is the next argument\n", "-S");
282 BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n", "-K/-iv");
283 BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n", "-[pP]");
284 BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>");
285 BIO_printf(bio_err, "%-14s disable standard block padding\n", "-nopad");
286#ifndef OPENSSL_NO_ENGINE
287 BIO_printf(bio_err, "%-14s use engine e, possibly a hardware device.\n", "-engine e");
288#endif
289
290 BIO_printf(bio_err, "Cipher Types\n");
291 OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
292 show_ciphers,
293 bio_err);
294 BIO_printf(bio_err, "\n");
295
296 goto end;
297 }
298 argc--;
299 argv++;
300 }
301
302#ifndef OPENSSL_NO_ENGINE
303 setup_engine(bio_err, engine, 0);
304#endif
305
306 if (md && (dgst = EVP_get_digestbyname(md)) == NULL) {
307 BIO_printf(bio_err, "%s is an unsupported message digest type\n", md);
308 goto end;
309 }
310 if (dgst == NULL) {
311 dgst = EVP_md5();
312 }
313 if (bufsize != NULL) {
314 unsigned long n;
315
316 for (n = 0; *bufsize; bufsize++) {
317 i = *bufsize;
318 if ((i <= '9') && (i >= '0'))
319 n = n * 10 + i - '0';
320 else if (i == 'k') {
321 n *= 1024;
322 bufsize++;
323 break;
324 }
325 }
326 if (*bufsize != '\0') {
327 BIO_printf(bio_err, "invalid 'bufsize' specified.\n");
328 goto end;
329 }
330 /* It must be large enough for a base64 encoded line */
331 if (base64 && n < 80)
332 n = 80;
333
334 bsize = (int) n;
335 if (verbose)
336 BIO_printf(bio_err, "bufsize=%d\n", bsize);
337 }
338 strbuf = malloc(SIZE);
339 buff = malloc(EVP_ENCODE_LENGTH(bsize));
340 if ((buff == NULL) || (strbuf == NULL)) {
341 BIO_printf(bio_err, "malloc failure %ld\n", (long) EVP_ENCODE_LENGTH(bsize));
342 goto end;
343 }
344 in = BIO_new(BIO_s_file());
345 out = BIO_new(BIO_s_file());
346 if ((in == NULL) || (out == NULL)) {
347 ERR_print_errors(bio_err);
348 goto end;
349 }
350 if (debug) {
351 BIO_set_callback(in, BIO_debug_callback);
352 BIO_set_callback(out, BIO_debug_callback);
353 BIO_set_callback_arg(in, (char *) bio_err);
354 BIO_set_callback_arg(out, (char *) bio_err);
355 }
356 if (inf == NULL) {
357 if (bufsize != NULL)
358 setvbuf(stdin, (char *) NULL, _IONBF, 0);
359 BIO_set_fp(in, stdin, BIO_NOCLOSE);
360 } else {
361 if (BIO_read_filename(in, inf) <= 0) {
362 perror(inf);
363 goto end;
364 }
365 }
366
367 if (!str && passarg) {
368 if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
369 BIO_printf(bio_err, "Error getting password\n");
370 goto end;
371 }
372 str = pass;
373 }
374 if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
375 for (;;) {
376 char buf[200];
377 int ret;
378
379 ret = snprintf(buf, sizeof buf, "enter %s %s password:",
380 OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
381 (enc) ? "encryption" : "decryption");
382 if (ret == -1 || ret >= sizeof buf) {
383 BIO_printf(bio_err, "Password prompt too long\n");
384 goto end;
385 }
386 strbuf[0] = '\0';
387 i = EVP_read_pw_string((char *) strbuf, SIZE, buf, enc);
388 if (i == 0) {
389 if (strbuf[0] == '\0') {
390 ret = 1;
391 goto end;
392 }
393 str = strbuf;
394 break;
395 }
396 if (i < 0) {
397 BIO_printf(bio_err, "bad password read\n");
398 goto end;
399 }
400 }
401 }
402 if (outf == NULL) {
403 BIO_set_fp(out, stdout, BIO_NOCLOSE);
404 if (bufsize != NULL)
405 setvbuf(stdout, (char *) NULL, _IONBF, 0);
406 } else {
407 if (BIO_write_filename(out, outf) <= 0) {
408 perror(outf);
409 goto end;
410 }
411 }
412
413 rbio = in;
414 wbio = out;
415
416#ifdef ZLIB
417
418 if (do_zlib) {
419 if ((bzl = BIO_new(BIO_f_zlib())) == NULL)
420 goto end;
421 if (enc)
422 wbio = BIO_push(bzl, wbio);
423 else
424 rbio = BIO_push(bzl, rbio);
425 }
426#endif
427
428 if (base64) {
429 if ((b64 = BIO_new(BIO_f_base64())) == NULL)
430 goto end;
431 if (debug) {
432 BIO_set_callback(b64, BIO_debug_callback);
433 BIO_set_callback_arg(b64, (char *) bio_err);
434 }
435 if (olb64)
436 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
437 if (enc)
438 wbio = BIO_push(b64, wbio);
439 else
440 rbio = BIO_push(b64, rbio);
441 }
442 if (cipher != NULL) {
443 /*
444 * Note that str is NULL if a key was passed on the command
445 * line, so we get no salt in that case. Is this a bug?
446 */
447 if (str != NULL) {
448 /*
449 * Salt handling: if encrypting generate a salt and
450 * write to output BIO. If decrypting read salt from
451 * input BIO.
452 */
453 unsigned char *sptr;
454 if (nosalt)
455 sptr = NULL;
456 else {
457 if (enc) {
458 if (hsalt) {
459 if (!set_hex(hsalt, salt, sizeof salt)) {
460 BIO_printf(bio_err,
461 "invalid hex salt value\n");
462 goto end;
463 }
464 } else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
465 goto end;
466 /*
467 * If -P option then don't bother
468 * writing
469 */
470 if ((printkey != 2)
471 && (BIO_write(wbio, magic,
472 sizeof magic - 1) != sizeof magic - 1
473 || BIO_write(wbio,
474 (char *) salt,
475 sizeof salt) != sizeof salt)) {
476 BIO_printf(bio_err, "error writing output file\n");
477 goto end;
478 }
479 } else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf
480 || BIO_read(rbio,
481 (unsigned char *) salt,
482 sizeof salt) != sizeof salt) {
483 BIO_printf(bio_err, "error reading input file\n");
484 goto end;
485 } else if (memcmp(mbuf, magic, sizeof magic - 1)) {
486 BIO_printf(bio_err, "bad magic number\n");
487 goto end;
488 }
489 sptr = salt;
490 }
491
492 EVP_BytesToKey(cipher, dgst, sptr,
493 (unsigned char *) str,
494 strlen(str), 1, key, iv);
495 /*
496 * zero the complete buffer or the string passed from
497 * the command line bug picked up by Larry J. Hughes
498 * Jr. <hughes@indiana.edu>
499 */
500 if (str == strbuf)
501 OPENSSL_cleanse(str, SIZE);
502 else
503 OPENSSL_cleanse(str, strlen(str));
504 }
505 if ((hiv != NULL) && !set_hex(hiv, iv, sizeof iv)) {
506 BIO_printf(bio_err, "invalid hex iv value\n");
507 goto end;
508 }
509 if ((hiv == NULL) && (str == NULL)
510 && EVP_CIPHER_iv_length(cipher) != 0) {
511 /*
512 * No IV was explicitly set and no IV was generated
513 * during EVP_BytesToKey. Hence the IV is undefined,
514 * making correct decryption impossible.
515 */
516 BIO_printf(bio_err, "iv undefined\n");
517 goto end;
518 }
519 if ((hkey != NULL) && !set_hex(hkey, key, sizeof key)) {
520 BIO_printf(bio_err, "invalid hex key value\n");
521 goto end;
522 }
523 if ((benc = BIO_new(BIO_f_cipher())) == NULL)
524 goto end;
525
526 /*
527 * Since we may be changing parameters work on the encryption
528 * context rather than calling BIO_set_cipher().
529 */
530
531 BIO_get_cipher_ctx(benc, &ctx);
532
533 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
534 BIO_printf(bio_err, "Error setting cipher %s\n",
535 EVP_CIPHER_name(cipher));
536 ERR_print_errors(bio_err);
537 goto end;
538 }
539 if (nopad)
540 EVP_CIPHER_CTX_set_padding(ctx, 0);
541
542 if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
543 BIO_printf(bio_err, "Error setting cipher %s\n",
544 EVP_CIPHER_name(cipher));
545 ERR_print_errors(bio_err);
546 goto end;
547 }
548 if (debug) {
549 BIO_set_callback(benc, BIO_debug_callback);
550 BIO_set_callback_arg(benc, (char *) bio_err);
551 }
552 if (printkey) {
553 if (!nosalt) {
554 printf("salt=");
555 for (i = 0; i < (int) sizeof(salt); i++)
556 printf("%02X", salt[i]);
557 printf("\n");
558 }
559 if (cipher->key_len > 0) {
560 printf("key=");
561 for (i = 0; i < cipher->key_len; i++)
562 printf("%02X", key[i]);
563 printf("\n");
564 }
565 if (cipher->iv_len > 0) {
566 printf("iv =");
567 for (i = 0; i < cipher->iv_len; i++)
568 printf("%02X", iv[i]);
569 printf("\n");
570 }
571 if (printkey == 2) {
572 ret = 0;
573 goto end;
574 }
575 }
576 }
577 /* Only encrypt/decrypt as we write the file */
578 if (benc != NULL)
579 wbio = BIO_push(benc, wbio);
580
581 for (;;) {
582 inl = BIO_read(rbio, (char *) buff, bsize);
583 if (inl <= 0)
584 break;
585 if (BIO_write(wbio, (char *) buff, inl) != inl) {
586 BIO_printf(bio_err, "error writing output file\n");
587 goto end;
588 }
589 }
590 if (!BIO_flush(wbio)) {
591 BIO_printf(bio_err, "bad decrypt\n");
592 goto end;
593 }
594 ret = 0;
595 if (verbose) {
596 BIO_printf(bio_err, "bytes read :%8ld\n", BIO_number_read(in));
597 BIO_printf(bio_err, "bytes written:%8ld\n", BIO_number_written(out));
598 }
599end:
600 ERR_print_errors(bio_err);
601 free(strbuf);
602 free(buff);
603 BIO_free(in);
604 if (out != NULL)
605 BIO_free_all(out);
606 BIO_free(benc);
607 BIO_free(b64);
608#ifdef ZLIB
609 BIO_free(bzl);
610#endif
611 free(pass);
612
613 return (ret);
614}
615
616int
617set_hex(char *in, unsigned char *out, int size)
618{
619 int i, n;
620 unsigned char j;
621
622 n = strlen(in);
623 if (n > (size * 2)) {
624 BIO_printf(bio_err, "hex string is too long\n");
625 return (0);
626 }
627 memset(out, 0, size);
628 for (i = 0; i < n; i++) {
629 j = (unsigned char) *in;
630 *(in++) = '\0';
631 if (j == 0)
632 break;
633 if ((j >= '0') && (j <= '9'))
634 j -= '0';
635 else if ((j >= 'A') && (j <= 'F'))
636 j = j - 'A' + 10;
637 else if ((j >= 'a') && (j <= 'f'))
638 j = j - 'a' + 10;
639 else {
640 BIO_printf(bio_err, "non-hex digit\n");
641 return (0);
642 }
643 if (i & 1)
644 out[i / 2] |= j;
645 else
646 out[i / 2] = (j << 4);
647 }
648 return (1);
649}
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