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-rw-r--r--other/openssh-2.1.1p4/ssh-keygen.c751
1 files changed, 0 insertions, 751 deletions
diff --git a/other/openssh-2.1.1p4/ssh-keygen.c b/other/openssh-2.1.1p4/ssh-keygen.c
deleted file mode 100644
index 8a03f0d..0000000
--- a/other/openssh-2.1.1p4/ssh-keygen.c
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@@ -1,751 +0,0 @@
1/*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
5 * Created: Mon Mar 27 02:26:40 1995 ylo
6 * Identity and host key generation and maintenance.
7 */
8
9#include "includes.h"
10RCSID("$OpenBSD: ssh-keygen.c,v 1.29 2000/07/15 04:01:37 djm Exp $");
11
12#include <openssl/evp.h>
13#include <openssl/pem.h>
14#include <openssl/rsa.h>
15#include <openssl/dsa.h>
16
17#include "ssh.h"
18#include "xmalloc.h"
19#include "fingerprint.h"
20#include "key.h"
21#include "rsa.h"
22#include "dsa.h"
23#include "authfile.h"
24#include "uuencode.h"
25
26/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */
27int bits = 1024;
28
29/*
30 * Flag indicating that we just want to change the passphrase. This can be
31 * set on the command line.
32 */
33int change_passphrase = 0;
34
35/*
36 * Flag indicating that we just want to change the comment. This can be set
37 * on the command line.
38 */
39int change_comment = 0;
40
41int quiet = 0;
42
43/* Flag indicating that we just want to see the key fingerprint */
44int print_fingerprint = 0;
45
46/* The identity file name, given on the command line or entered by the user. */
47char identity_file[1024];
48int have_identity = 0;
49
50/* This is set to the passphrase if given on the command line. */
51char *identity_passphrase = NULL;
52
53/* This is set to the new passphrase if given on the command line. */
54char *identity_new_passphrase = NULL;
55
56/* This is set to the new comment if given on the command line. */
57char *identity_comment = NULL;
58
59/* Dump public key file in format used by real and the original SSH 2 */
60int convert_to_ssh2 = 0;
61int convert_from_ssh2 = 0;
62int print_public = 0;
63int dsa_mode = 0;
64
65/* argv0 */
66#ifdef HAVE___PROGNAME
67extern char *__progname;
68#else /* HAVE___PROGNAME */
69static const char *__progname = "ssh-keygen";
70#endif /* HAVE___PROGNAME */
71
72char hostname[MAXHOSTNAMELEN];
73
74void
75ask_filename(struct passwd *pw, const char *prompt)
76{
77 char buf[1024];
78 snprintf(identity_file, sizeof(identity_file), "%s/%s",
79 pw->pw_dir,
80 dsa_mode ? SSH_CLIENT_ID_DSA: SSH_CLIENT_IDENTITY);
81 printf("%s (%s): ", prompt, identity_file);
82 fflush(stdout);
83 if (fgets(buf, sizeof(buf), stdin) == NULL)
84 exit(1);
85 if (strchr(buf, '\n'))
86 *strchr(buf, '\n') = 0;
87 if (strcmp(buf, "") != 0)
88 strlcpy(identity_file, buf, sizeof(identity_file));
89 have_identity = 1;
90}
91
92int
93try_load_key(char *filename, Key *k)
94{
95 int success = 1;
96 if (!load_private_key(filename, "", k, NULL)) {
97 char *pass = read_passphrase("Enter passphrase: ", 1);
98 if (!load_private_key(filename, pass, k, NULL)) {
99 success = 0;
100 }
101 memset(pass, 0, strlen(pass));
102 xfree(pass);
103 }
104 return success;
105}
106
107#define SSH_COM_MAGIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
108#define SSH_COM_MAGIC_END "---- END SSH2 PUBLIC KEY ----"
109
110void
111do_convert_to_ssh2(struct passwd *pw)
112{
113 Key *k;
114 int len;
115 unsigned char *blob;
116 struct stat st;
117
118 if (!have_identity)
119 ask_filename(pw, "Enter file in which the key is");
120 if (stat(identity_file, &st) < 0) {
121 perror(identity_file);
122 exit(1);
123 }
124 k = key_new(KEY_DSA);
125 if (!try_load_key(identity_file, k)) {
126 fprintf(stderr, "load failed\n");
127 exit(1);
128 }
129 dsa_make_key_blob(k, &blob, &len);
130 fprintf(stdout, "%s\n", SSH_COM_MAGIC_BEGIN);
131 fprintf(stdout,
132 "Comment: \"%d-bit DSA, converted from openssh by %s@%s\"\n",
133 BN_num_bits(k->dsa->p),
134 pw->pw_name, hostname);
135 dump_base64(stdout, blob, len);
136 fprintf(stdout, "%s\n", SSH_COM_MAGIC_END);
137 key_free(k);
138 xfree(blob);
139 exit(0);
140}
141
142void
143do_convert_from_ssh2(struct passwd *pw)
144{
145 Key *k;
146 int blen;
147 char line[1024], *p;
148 char blob[8096];
149 char encoded[8096];
150 struct stat st;
151 int escaped = 0;
152 FILE *fp;
153
154 if (!have_identity)
155 ask_filename(pw, "Enter file in which the key is");
156 if (stat(identity_file, &st) < 0) {
157 perror(identity_file);
158 exit(1);
159 }
160 fp = fopen(identity_file, "r");
161 if (fp == NULL) {
162 perror(identity_file);
163 exit(1);
164 }
165 encoded[0] = '\0';
166 while (fgets(line, sizeof(line), fp)) {
167 if (!(p = strchr(line, '\n'))) {
168 fprintf(stderr, "input line too long.\n");
169 exit(1);
170 }
171 if (p > line && p[-1] == '\\')
172 escaped++;
173 if (strncmp(line, "----", 4) == 0 ||
174 strstr(line, ": ") != NULL) {
175 fprintf(stderr, "ignore: %s", line);
176 continue;
177 }
178 if (escaped) {
179 escaped--;
180 fprintf(stderr, "escaped: %s", line);
181 continue;
182 }
183 *p = '\0';
184 strlcat(encoded, line, sizeof(encoded));
185 }
186 blen = uudecode(encoded, (unsigned char *)blob, sizeof(blob));
187 if (blen < 0) {
188 fprintf(stderr, "uudecode failed.\n");
189 exit(1);
190 }
191 k = dsa_key_from_blob(blob, blen);
192 if (!key_write(k, stdout))
193 fprintf(stderr, "key_write failed");
194 key_free(k);
195 fprintf(stdout, "\n");
196 fclose(fp);
197 exit(0);
198}
199
200void
201do_print_public(struct passwd *pw)
202{
203 Key *k;
204 int len;
205 unsigned char *blob;
206 struct stat st;
207
208 if (!have_identity)
209 ask_filename(pw, "Enter file in which the key is");
210 if (stat(identity_file, &st) < 0) {
211 perror(identity_file);
212 exit(1);
213 }
214 k = key_new(KEY_DSA);
215 if (!try_load_key(identity_file, k)) {
216 fprintf(stderr, "load failed\n");
217 exit(1);
218 }
219 dsa_make_key_blob(k, &blob, &len);
220 if (!key_write(k, stdout))
221 fprintf(stderr, "key_write failed");
222 key_free(k);
223 xfree(blob);
224 fprintf(stdout, "\n");
225 exit(0);
226}
227
228void
229do_fingerprint(struct passwd *pw)
230{
231 FILE *f;
232 BIGNUM *e, *n;
233 Key *public;
234 char *comment = NULL, *cp, *ep, line[16*1024];
235 int i, skip = 0, num = 1, invalid = 1;
236 unsigned int ignore;
237 struct stat st;
238
239 if (!have_identity)
240 ask_filename(pw, "Enter file in which the key is");
241 if (stat(identity_file, &st) < 0) {
242 perror(identity_file);
243 exit(1);
244 }
245 public = key_new(KEY_RSA);
246 if (load_public_key(identity_file, public, &comment)) {
247 printf("%d %s %s\n", BN_num_bits(public->rsa->n),
248 key_fingerprint(public), comment);
249 key_free(public);
250 exit(0);
251 }
252 key_free(public);
253
254 /* XXX */
255 f = fopen(identity_file, "r");
256 if (f != NULL) {
257 n = BN_new();
258 e = BN_new();
259 while (fgets(line, sizeof(line), f)) {
260 i = strlen(line) - 1;
261 if (line[i] != '\n') {
262 error("line %d too long: %.40s...", num, line);
263 skip = 1;
264 continue;
265 }
266 num++;
267 if (skip) {
268 skip = 0;
269 continue;
270 }
271 line[i] = '\0';
272
273 /* Skip leading whitespace, empty and comment lines. */
274 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
275 ;
276 if (!*cp || *cp == '\n' || *cp == '#')
277 continue ;
278 i = strtol(cp, &ep, 10);
279 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
280 int quoted = 0;
281 comment = cp;
282 for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
283 if (*cp == '\\' && cp[1] == '"')
284 cp++; /* Skip both */
285 else if (*cp == '"')
286 quoted = !quoted;
287 }
288 if (!*cp)
289 continue;
290 *cp++ = '\0';
291 }
292 ep = cp;
293 if (auth_rsa_read_key(&cp, &ignore, e, n)) {
294 invalid = 0;
295 comment = *cp ? cp : comment;
296 printf("%d %s %s\n", BN_num_bits(n),
297 fingerprint(e, n),
298 comment ? comment : "no comment");
299 }
300 }
301 BN_free(e);
302 BN_free(n);
303 fclose(f);
304 }
305 if (invalid) {
306 printf("%s is not a valid key file.\n", identity_file);
307 exit(1);
308 }
309 exit(0);
310}
311
312/*
313 * Perform changing a passphrase. The argument is the passwd structure
314 * for the current user.
315 */
316void
317do_change_passphrase(struct passwd *pw)
318{
319 char *comment;
320 char *old_passphrase, *passphrase1, *passphrase2;
321 struct stat st;
322 Key *private;
323 Key *public;
324 int type = dsa_mode ? KEY_DSA : KEY_RSA;
325
326 if (!have_identity)
327 ask_filename(pw, "Enter file in which the key is");
328 if (stat(identity_file, &st) < 0) {
329 perror(identity_file);
330 exit(1);
331 }
332
333 if (type == KEY_RSA) {
334 /* XXX this works currently only for RSA */
335 public = key_new(type);
336 if (!load_public_key(identity_file, public, NULL)) {
337 printf("%s is not a valid key file.\n", identity_file);
338 exit(1);
339 }
340 /* Clear the public key since we are just about to load the whole file. */
341 key_free(public);
342 }
343
344 /* Try to load the file with empty passphrase. */
345 private = key_new(type);
346 if (!load_private_key(identity_file, "", private, &comment)) {
347 if (identity_passphrase)
348 old_passphrase = xstrdup(identity_passphrase);
349 else
350 old_passphrase = read_passphrase("Enter old passphrase: ", 1);
351 if (!load_private_key(identity_file, old_passphrase, private, &comment)) {
352 memset(old_passphrase, 0, strlen(old_passphrase));
353 xfree(old_passphrase);
354 printf("Bad passphrase.\n");
355 exit(1);
356 }
357 memset(old_passphrase, 0, strlen(old_passphrase));
358 xfree(old_passphrase);
359 }
360 printf("Key has comment '%s'\n", comment);
361
362 /* Ask the new passphrase (twice). */
363 if (identity_new_passphrase) {
364 passphrase1 = xstrdup(identity_new_passphrase);
365 passphrase2 = NULL;
366 } else {
367 passphrase1 =
368 read_passphrase("Enter new passphrase (empty for no passphrase): ", 1);
369 passphrase2 = read_passphrase("Enter same passphrase again: ", 1);
370
371 /* Verify that they are the same. */
372 if (strcmp(passphrase1, passphrase2) != 0) {
373 memset(passphrase1, 0, strlen(passphrase1));
374 memset(passphrase2, 0, strlen(passphrase2));
375 xfree(passphrase1);
376 xfree(passphrase2);
377 printf("Pass phrases do not match. Try again.\n");
378 exit(1);
379 }
380 /* Destroy the other copy. */
381 memset(passphrase2, 0, strlen(passphrase2));
382 xfree(passphrase2);
383 }
384
385 /* Save the file using the new passphrase. */
386 if (!save_private_key(identity_file, passphrase1, private, comment)) {
387 printf("Saving the key failed: %s: %s.\n",
388 identity_file, strerror(errno));
389 memset(passphrase1, 0, strlen(passphrase1));
390 xfree(passphrase1);
391 key_free(private);
392 xfree(comment);
393 exit(1);
394 }
395 /* Destroy the passphrase and the copy of the key in memory. */
396 memset(passphrase1, 0, strlen(passphrase1));
397 xfree(passphrase1);
398 key_free(private); /* Destroys contents */
399 xfree(comment);
400
401 printf("Your identification has been saved with the new passphrase.\n");
402 exit(0);
403}
404
405/*
406 * Change the comment of a private key file.
407 */
408void
409do_change_comment(struct passwd *pw)
410{
411 char new_comment[1024], *comment;
412 Key *private;
413 Key *public;
414 char *passphrase;
415 struct stat st;
416 FILE *f;
417
418 if (!have_identity)
419 ask_filename(pw, "Enter file in which the key is");
420 if (stat(identity_file, &st) < 0) {
421 perror(identity_file);
422 exit(1);
423 }
424 /*
425 * Try to load the public key from the file the verify that it is
426 * readable and of the proper format.
427 */
428 public = key_new(KEY_RSA);
429 if (!load_public_key(identity_file, public, NULL)) {
430 printf("%s is not a valid key file.\n", identity_file);
431 exit(1);
432 }
433
434 private = key_new(KEY_RSA);
435 if (load_private_key(identity_file, "", private, &comment))
436 passphrase = xstrdup("");
437 else {
438 if (identity_passphrase)
439 passphrase = xstrdup(identity_passphrase);
440 else if (identity_new_passphrase)
441 passphrase = xstrdup(identity_new_passphrase);
442 else
443 passphrase = read_passphrase("Enter passphrase: ", 1);
444 /* Try to load using the passphrase. */
445 if (!load_private_key(identity_file, passphrase, private, &comment)) {
446 memset(passphrase, 0, strlen(passphrase));
447 xfree(passphrase);
448 printf("Bad passphrase.\n");
449 exit(1);
450 }
451 }
452 printf("Key now has comment '%s'\n", comment);
453
454 if (identity_comment) {
455 strlcpy(new_comment, identity_comment, sizeof(new_comment));
456 } else {
457 printf("Enter new comment: ");
458 fflush(stdout);
459 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
460 memset(passphrase, 0, strlen(passphrase));
461 key_free(private);
462 exit(1);
463 }
464 if (strchr(new_comment, '\n'))
465 *strchr(new_comment, '\n') = 0;
466 }
467
468 /* Save the file using the new passphrase. */
469 if (!save_private_key(identity_file, passphrase, private, new_comment)) {
470 printf("Saving the key failed: %s: %s.\n",
471 identity_file, strerror(errno));
472 memset(passphrase, 0, strlen(passphrase));
473 xfree(passphrase);
474 key_free(private);
475 xfree(comment);
476 exit(1);
477 }
478 memset(passphrase, 0, strlen(passphrase));
479 xfree(passphrase);
480 key_free(private);
481
482 strlcat(identity_file, ".pub", sizeof(identity_file));
483 f = fopen(identity_file, "w");
484 if (!f) {
485 printf("Could not save your public key in %s\n", identity_file);
486 exit(1);
487 }
488 if (!key_write(public, f))
489 fprintf(stderr, "write key failed");
490 key_free(public);
491 fprintf(f, " %s\n", new_comment);
492 fclose(f);
493
494 xfree(comment);
495
496 printf("The comment in your key file has been changed.\n");
497 exit(0);
498}
499
500void
501usage(void)
502{
503 printf("Usage: %s [-lpqxXydc] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname);
504 exit(1);
505}
506
507/*
508 * Main program for key management.
509 */
510int
511main(int ac, char **av)
512{
513 char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2;
514 struct passwd *pw;
515 int opt;
516 struct stat st;
517 FILE *f;
518 Key *private;
519 Key *public;
520 extern int optind;
521 extern char *optarg;
522
523 init_rng();
524
525 SSLeay_add_all_algorithms();
526
527 /* we need this for the home * directory. */
528 pw = getpwuid(getuid());
529 if (!pw) {
530 printf("You don't exist, go away!\n");
531 exit(1);
532 }
533 if (gethostname(hostname, sizeof(hostname)) < 0) {
534 perror("gethostname");
535 exit(1);
536 }
537
538 while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) {
539 switch (opt) {
540 case 'b':
541 bits = atoi(optarg);
542 if (bits < 512 || bits > 32768) {
543 printf("Bits has bad value.\n");
544 exit(1);
545 }
546 break;
547
548 case 'l':
549 print_fingerprint = 1;
550 break;
551
552 case 'p':
553 change_passphrase = 1;
554 break;
555
556 case 'c':
557 change_comment = 1;
558 break;
559
560 case 'f':
561 strlcpy(identity_file, optarg, sizeof(identity_file));
562 have_identity = 1;
563 break;
564
565 case 'P':
566 identity_passphrase = optarg;
567 break;
568
569 case 'N':
570 identity_new_passphrase = optarg;
571 break;
572
573 case 'C':
574 identity_comment = optarg;
575 break;
576
577 case 'q':
578 quiet = 1;
579 break;
580
581 case 'R':
582 if (rsa_alive() == 0)
583 exit(1);
584 else
585 exit(0);
586 break;
587
588 case 'x':
589 convert_to_ssh2 = 1;
590 break;
591
592 case 'X':
593 convert_from_ssh2 = 1;
594 break;
595
596 case 'y':
597 print_public = 1;
598 break;
599
600 case 'd':
601 dsa_mode = 1;
602 break;
603
604 case '?':
605 default:
606 usage();
607 }
608 }
609 if (optind < ac) {
610 printf("Too many arguments.\n");
611 usage();
612 }
613 if (change_passphrase && change_comment) {
614 printf("Can only have one of -p and -c.\n");
615 usage();
616 }
617 /* check if RSA support is needed and exists */
618 if (dsa_mode == 0 && rsa_alive() == 0) {
619 fprintf(stderr,
620 "%s: no RSA support in libssl and libcrypto. See ssl(8).\n",
621 __progname);
622 exit(1);
623 }
624 if (print_fingerprint)
625 do_fingerprint(pw);
626 if (change_passphrase)
627 do_change_passphrase(pw);
628 if (change_comment)
629 do_change_comment(pw);
630 if (convert_to_ssh2)
631 do_convert_to_ssh2(pw);
632 if (convert_from_ssh2)
633 do_convert_from_ssh2(pw);
634 if (print_public)
635 do_print_public(pw);
636
637 arc4random_stir();
638
639 if (dsa_mode != 0) {
640 if (!quiet)
641 printf("Generating DSA parameter and key.\n");
642 public = private = dsa_generate_key(bits);
643 if (private == NULL) {
644 fprintf(stderr, "dsa_generate_keys failed");
645 exit(1);
646 }
647 } else {
648 if (quiet)
649 rsa_set_verbose(0);
650 /* Generate the rsa key pair. */
651 public = key_new(KEY_RSA);
652 private = key_new(KEY_RSA);
653 rsa_generate_key(private->rsa, public->rsa, bits);
654 }
655
656 if (!have_identity)
657 ask_filename(pw, "Enter file in which to save the key");
658
659 /* Create ~/.ssh directory if it doesn\'t already exist. */
660 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR);
661 if (strstr(identity_file, dotsshdir) != NULL &&
662 stat(dotsshdir, &st) < 0) {
663 if (mkdir(dotsshdir, 0700) < 0)
664 error("Could not create directory '%s'.", dotsshdir);
665 else if (!quiet)
666 printf("Created directory '%s'.\n", dotsshdir);
667 }
668 /* If the file already exists, ask the user to confirm. */
669 if (stat(identity_file, &st) >= 0) {
670 char yesno[3];
671 printf("%s already exists.\n", identity_file);
672 printf("Overwrite (y/n)? ");
673 fflush(stdout);
674 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
675 exit(1);
676 if (yesno[0] != 'y' && yesno[0] != 'Y')
677 exit(1);
678 }
679 /* Ask for a passphrase (twice). */
680 if (identity_passphrase)
681 passphrase1 = xstrdup(identity_passphrase);
682 else if (identity_new_passphrase)
683 passphrase1 = xstrdup(identity_new_passphrase);
684 else {
685passphrase_again:
686 passphrase1 =
687 read_passphrase("Enter passphrase (empty for no passphrase): ", 1);
688 passphrase2 = read_passphrase("Enter same passphrase again: ", 1);
689 if (strcmp(passphrase1, passphrase2) != 0) {
690 /* The passphrases do not match. Clear them and retry. */
691 memset(passphrase1, 0, strlen(passphrase1));
692 memset(passphrase2, 0, strlen(passphrase2));
693 xfree(passphrase1);
694 xfree(passphrase2);
695 printf("Passphrases do not match. Try again.\n");
696 goto passphrase_again;
697 }
698 /* Clear the other copy of the passphrase. */
699 memset(passphrase2, 0, strlen(passphrase2));
700 xfree(passphrase2);
701 }
702
703 if (identity_comment) {
704 strlcpy(comment, identity_comment, sizeof(comment));
705 } else {
706 /* Create default commend field for the passphrase. */
707 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
708 }
709
710 /* Save the key with the given passphrase and comment. */
711 if (!save_private_key(identity_file, passphrase1, private, comment)) {
712 printf("Saving the key failed: %s: %s.\n",
713 identity_file, strerror(errno));
714 memset(passphrase1, 0, strlen(passphrase1));
715 xfree(passphrase1);
716 exit(1);
717 }
718 /* Clear the passphrase. */
719 memset(passphrase1, 0, strlen(passphrase1));
720 xfree(passphrase1);
721
722 /* Clear the private key and the random number generator. */
723 if (private != public) {
724 key_free(private);
725 }
726 arc4random_stir();
727
728 if (!quiet)
729 printf("Your identification has been saved in %s.\n", identity_file);
730
731 strlcat(identity_file, ".pub", sizeof(identity_file));
732 f = fopen(identity_file, "w");
733 if (!f) {
734 printf("Could not save your public key in %s\n", identity_file);
735 exit(1);
736 }
737 if (!key_write(public, f))
738 fprintf(stderr, "write key failed");
739 fprintf(f, " %s\n", comment);
740 fclose(f);
741
742 if (!quiet) {
743 printf("Your public key has been saved in %s.\n",
744 identity_file);
745 printf("The key fingerprint is:\n");
746 printf("%s %s\n", key_fingerprint(public), comment);
747 }
748
749 key_free(public);
750 exit(0);
751}