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[netbsd-mini2440.git] / crypto / external / bsd / openssh / dist / ssh-keygen.c
blob890975d29e92433a7653df68f53f8f2e43b724f1
1 /* $NetBSD: ssh-keygen.c,v 1.1.1.2 2009/12/27 01:07:10 christos Exp $ */
2 /* $OpenBSD: ssh-keygen.c,v 1.174 2009/06/22 05:39:28 dtucker Exp $ */
3 /*
4 * Author: Tatu Ylonen <ylo@cs.hut.fi>
5 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * All rights reserved
7 * Identity and host key generation and maintenance.
8 *
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose. Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
14 */
15
16 #include "includes.h"
17 __RCSID("$NetBSD: ssh-keygen.c,v 1.2 2009/06/07 22:38:47 christos Exp $");
18 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <sys/stat.h>
21 #include <sys/param.h>
22
23 #include <openssl/evp.h>
24 #include <openssl/pem.h>
25
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <pwd.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <unistd.h>
33
34 #include "xmalloc.h"
35 #include "key.h"
36 #include "rsa.h"
37 #include "authfile.h"
38 #include "uuencode.h"
39 #include "buffer.h"
40 #include "pathnames.h"
41 #include "log.h"
42 #include "misc.h"
43 #include "match.h"
44 #include "hostfile.h"
45 #include "dns.h"
46
47 #ifdef SMARTCARD
48 #include "scard.h"
49 #endif
50
51 /* Number of bits in the RSA/DSA key. This value can be set on the command line. */
52 #define DEFAULT_BITS 2048
53 #define DEFAULT_BITS_DSA 1024
54 u_int32_t bits = 0;
55
56 /*
57 * Flag indicating that we just want to change the passphrase. This can be
58 * set on the command line.
59 */
60 int change_passphrase = 0;
61
62 /*
63 * Flag indicating that we just want to change the comment. This can be set
64 * on the command line.
65 */
66 int change_comment = 0;
67
68 int quiet = 0;
69
70 int log_level = SYSLOG_LEVEL_INFO;
71
72 /* Flag indicating that we want to hash a known_hosts file */
73 int hash_hosts = 0;
74 /* Flag indicating that we want lookup a host in known_hosts file */
75 int find_host = 0;
76 /* Flag indicating that we want to delete a host from a known_hosts file */
77 int delete_host = 0;
78
79 /* Flag indicating that we just want to see the key fingerprint */
80 int print_fingerprint = 0;
81 int print_bubblebabble = 0;
82
83 /* The identity file name, given on the command line or entered by the user. */
84 char identity_file[1024];
85 int have_identity = 0;
86
87 /* This is set to the passphrase if given on the command line. */
88 char *identity_passphrase = NULL;
89
90 /* This is set to the new passphrase if given on the command line. */
91 char *identity_new_passphrase = NULL;
92
93 /* This is set to the new comment if given on the command line. */
94 char *identity_comment = NULL;
95
96 /* Dump public key file in format used by real and the original SSH 2 */
97 int convert_to_ssh2 = 0;
98 int convert_from_ssh2 = 0;
99 int print_public = 0;
100 int print_generic = 0;
101
102 char *key_type_name = NULL;
103
104 /* argv0 */
105 extern char *__progname;
106
107 char hostname[MAXHOSTNAMELEN];
108
109 /* moduli.c */
110 int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
111 int prime_test(FILE *, FILE *, u_int32_t, u_int32_t);
112
113 static void
114 ask_filename(struct passwd *pw, const char *prompt)
115 {
116 char buf[1024];
117 char *name = NULL;
118
119 if (key_type_name == NULL)
120 name = _PATH_SSH_CLIENT_ID_RSA;
121 else {
122 switch (key_type_from_name(key_type_name)) {
123 case KEY_RSA1:
124 name = _PATH_SSH_CLIENT_IDENTITY;
125 break;
126 case KEY_DSA:
127 name = _PATH_SSH_CLIENT_ID_DSA;
128 break;
129 case KEY_RSA:
130 name = _PATH_SSH_CLIENT_ID_RSA;
131 break;
132 default:
133 fprintf(stderr, "bad key type\n");
134 exit(1);
135 break;
136 }
137 }
138 snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
139 fprintf(stderr, "%s (%s): ", prompt, identity_file);
140 if (fgets(buf, sizeof(buf), stdin) == NULL)
141 exit(1);
142 buf[strcspn(buf, "\n")] = '\0';
143 if (strcmp(buf, "") != 0)
144 strlcpy(identity_file, buf, sizeof(identity_file));
145 have_identity = 1;
146 }
147
148 static Key *
149 load_identity(char *filename)
150 {
151 char *pass;
152 Key *prv;
153
154 prv = key_load_private(filename, "", NULL);
155 if (prv == NULL) {
156 if (identity_passphrase)
157 pass = xstrdup(identity_passphrase);
158 else
159 pass = read_passphrase("Enter passphrase: ",
160 RP_ALLOW_STDIN);
161 prv = key_load_private(filename, pass, NULL);
162 memset(pass, 0, strlen(pass));
163 xfree(pass);
164 }
165 return prv;
166 }
167
168 #define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
169 #define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
170 #define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
171 #define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
172
173 static void
174 do_convert_to_ssh2(struct passwd *pw)
175 {
176 Key *k;
177 u_int len;
178 u_char *blob;
179 struct stat st;
180
181 if (!have_identity)
182 ask_filename(pw, "Enter file in which the key is");
183 if (stat(identity_file, &st) < 0) {
184 perror(identity_file);
185 exit(1);
186 }
187 if ((k = key_load_public(identity_file, NULL)) == NULL) {
188 if ((k = load_identity(identity_file)) == NULL) {
189 fprintf(stderr, "load failed\n");
190 exit(1);
191 }
192 }
193 if (k->type == KEY_RSA1) {
194 fprintf(stderr, "version 1 keys are not supported\n");
195 exit(1);
196 }
197 if (key_to_blob(k, &blob, &len) <= 0) {
198 fprintf(stderr, "key_to_blob failed\n");
199 exit(1);
200 }
201 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
202 fprintf(stdout,
203 "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
204 key_size(k), key_type(k),
205 pw->pw_name, hostname);
206 dump_base64(stdout, blob, len);
207 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
208 key_free(k);
209 xfree(blob);
210 exit(0);
211 }
212
213 static void
214 buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
215 {
216 u_int bignum_bits = buffer_get_int(b);
217 u_int bytes = (bignum_bits + 7) / 8;
218
219 if (buffer_len(b) < bytes)
220 fatal("buffer_get_bignum_bits: input buffer too small: "
221 "need %d have %d", bytes, buffer_len(b));
222 if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL)
223 fatal("buffer_get_bignum_bits: BN_bin2bn failed");
224 buffer_consume(b, bytes);
225 }
226
227 static Key *
228 do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
229 {
230 Buffer b;
231 Key *key = NULL;
232 char *type, *cipher;
233 u_char *sig, data[] = "abcde12345";
234 int magic, rlen, ktype, i1, i2, i3, i4;
235 u_int slen;
236 u_long e;
237
238 buffer_init(&b);
239 buffer_append(&b, blob, blen);
240
241 magic = buffer_get_int(&b);
242 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
243 error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
244 buffer_free(&b);
245 return NULL;
246 }
247 i1 = buffer_get_int(&b);
248 type = buffer_get_string(&b, NULL);
249 cipher = buffer_get_string(&b, NULL);
250 i2 = buffer_get_int(&b);
251 i3 = buffer_get_int(&b);
252 i4 = buffer_get_int(&b);
253 debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
254 if (strcmp(cipher, "none") != 0) {
255 error("unsupported cipher %s", cipher);
256 xfree(cipher);
257 buffer_free(&b);
258 xfree(type);
259 return NULL;
260 }
261 xfree(cipher);
262
263 if (strstr(type, "dsa")) {
264 ktype = KEY_DSA;
265 } else if (strstr(type, "rsa")) {
266 ktype = KEY_RSA;
267 } else {
268 buffer_free(&b);
269 xfree(type);
270 return NULL;
271 }
272 key = key_new_private(ktype);
273 xfree(type);
274
275 switch (key->type) {
276 case KEY_DSA:
277 buffer_get_bignum_bits(&b, key->dsa->p);
278 buffer_get_bignum_bits(&b, key->dsa->g);
279 buffer_get_bignum_bits(&b, key->dsa->q);
280 buffer_get_bignum_bits(&b, key->dsa->pub_key);
281 buffer_get_bignum_bits(&b, key->dsa->priv_key);
282 break;
283 case KEY_RSA:
284 e = buffer_get_char(&b);
285 debug("e %lx", e);
286 if (e < 30) {
287 e <<= 8;
288 e += buffer_get_char(&b);
289 debug("e %lx", e);
290 e <<= 8;
291 e += buffer_get_char(&b);
292 debug("e %lx", e);
293 }
294 if (!BN_set_word(key->rsa->e, e)) {
295 buffer_free(&b);
296 key_free(key);
297 return NULL;
298 }
299 buffer_get_bignum_bits(&b, key->rsa->d);
300 buffer_get_bignum_bits(&b, key->rsa->n);
301 buffer_get_bignum_bits(&b, key->rsa->iqmp);
302 buffer_get_bignum_bits(&b, key->rsa->q);
303 buffer_get_bignum_bits(&b, key->rsa->p);
304 rsa_generate_additional_parameters(key->rsa);
305 break;
306 }
307 rlen = buffer_len(&b);
308 if (rlen != 0)
309 error("do_convert_private_ssh2_from_blob: "
310 "remaining bytes in key blob %d", rlen);
311 buffer_free(&b);
312
313 /* try the key */
314 key_sign(key, &sig, &slen, data, sizeof(data));
315 key_verify(key, sig, slen, data, sizeof(data));
316 xfree(sig);
317 return key;
318 }
319
320 static int
321 get_line(FILE *fp, char *line, size_t len)
322 {
323 int c;
324 size_t pos = 0;
325
326 line[0] = '\0';
327 while ((c = fgetc(fp)) != EOF) {
328 if (pos >= len - 1) {
329 fprintf(stderr, "input line too long.\n");
330 exit(1);
331 }
332 switch (c) {
333 case '\r':
334 c = fgetc(fp);
335 if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) {
336 fprintf(stderr, "unget: %s\n", strerror(errno));
337 exit(1);
338 }
339 return pos;
340 case '\n':
341 return pos;
342 }
343 line[pos++] = c;
344 line[pos] = '\0';
345 }
346 /* We reached EOF */
347 return -1;
348 }
349
350 static void
351 do_convert_from_ssh2(struct passwd *pw)
352 {
353 Key *k;
354 int blen;
355 u_int len;
356 char line[1024];
357 u_char blob[8096];
358 char encoded[8096];
359 struct stat st;
360 int escaped = 0, private = 0, ok;
361 FILE *fp;
362
363 if (!have_identity)
364 ask_filename(pw, "Enter file in which the key is");
365 if (stat(identity_file, &st) < 0) {
366 perror(identity_file);
367 exit(1);
368 }
369 fp = fopen(identity_file, "r");
370 if (fp == NULL) {
371 perror(identity_file);
372 exit(1);
373 }
374 encoded[0] = '\0';
375 while ((blen = get_line(fp, line, sizeof(line))) != -1) {
376 if (line[blen - 1] == '\\')
377 escaped++;
378 if (strncmp(line, "----", 4) == 0 ||
379 strstr(line, ": ") != NULL) {
380 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
381 private = 1;
382 if (strstr(line, " END ") != NULL) {
383 break;
384 }
385 /* fprintf(stderr, "ignore: %s", line); */
386 continue;
387 }
388 if (escaped) {
389 escaped--;
390 /* fprintf(stderr, "escaped: %s", line); */
391 continue;
392 }
393 strlcat(encoded, line, sizeof(encoded));
394 }
395 len = strlen(encoded);
396 if (((len % 4) == 3) &&
397 (encoded[len-1] == '=') &&
398 (encoded[len-2] == '=') &&
399 (encoded[len-3] == '='))
400 encoded[len-3] = '\0';
401 blen = uudecode(encoded, blob, sizeof(blob));
402 if (blen < 0) {
403 fprintf(stderr, "uudecode failed.\n");
404 exit(1);
405 }
406 k = private ?
407 do_convert_private_ssh2_from_blob(blob, blen) :
408 key_from_blob(blob, blen);
409 if (k == NULL) {
410 fprintf(stderr, "decode blob failed.\n");
411 exit(1);
412 }
413 ok = private ?
414 (k->type == KEY_DSA ?
415 PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
416 PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
417 key_write(k, stdout);
418 if (!ok) {
419 fprintf(stderr, "key write failed\n");
420 exit(1);
421 }
422 key_free(k);
423 if (!private)
424 fprintf(stdout, "\n");
425 fclose(fp);
426 exit(0);
427 }
428
429 static void
430 do_print_public(struct passwd *pw)
431 {
432 Key *prv;
433 struct stat st;
434
435 if (!have_identity)
436 ask_filename(pw, "Enter file in which the key is");
437 if (stat(identity_file, &st) < 0) {
438 perror(identity_file);
439 exit(1);
440 }
441 prv = load_identity(identity_file);
442 if (prv == NULL) {
443 fprintf(stderr, "load failed\n");
444 exit(1);
445 }
446 if (!key_write(prv, stdout))
447 fprintf(stderr, "key_write failed");
448 key_free(prv);
449 fprintf(stdout, "\n");
450 exit(0);
451 }
452
453 #ifdef SMARTCARD
454 static void
455 do_upload(struct passwd *pw, const char *sc_reader_id)
456 {
457 Key *prv = NULL;
458 struct stat st;
459 int ret;
460
461 if (!have_identity)
462 ask_filename(pw, "Enter file in which the key is");
463 if (stat(identity_file, &st) < 0) {
464 perror(identity_file);
465 exit(1);
466 }
467 prv = load_identity(identity_file);
468 if (prv == NULL) {
469 error("load failed");
470 exit(1);
471 }
472 ret = sc_put_key(prv, sc_reader_id);
473 key_free(prv);
474 if (ret < 0)
475 exit(1);
476 logit("loading key done");
477 exit(0);
478 }
479
480 static void
481 do_download(struct passwd *pw, const char *sc_reader_id)
482 {
483 Key **keys = NULL;
484 int i;
485
486 keys = sc_get_keys(sc_reader_id, NULL);
487 if (keys == NULL)
488 fatal("cannot read public key from smartcard");
489 for (i = 0; keys[i]; i++) {
490 key_write(keys[i], stdout);
491 key_free(keys[i]);
492 fprintf(stdout, "\n");
493 }
494 xfree(keys);
495 exit(0);
496 }
497 #endif /* SMARTCARD */
498
499 static void
500 do_fingerprint(struct passwd *pw)
501 {
502 FILE *f;
503 Key *public;
504 char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra;
505 int i, skip = 0, num = 0, invalid = 1;
506 enum fp_rep rep;
507 enum fp_type fptype;
508 struct stat st;
509
510 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
511 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
512
513 if (!have_identity)
514 ask_filename(pw, "Enter file in which the key is");
515 if (stat(identity_file, &st) < 0) {
516 perror(identity_file);
517 exit(1);
518 }
519 public = key_load_public(identity_file, &comment);
520 if (public != NULL) {
521 fp = key_fingerprint(public, fptype, rep);
522 ra = key_fingerprint(public, fptype, SSH_FP_RANDOMART);
523 printf("%u %s %s (%s)\n", key_size(public), fp, comment,
524 key_type(public));
525 if (log_level >= SYSLOG_LEVEL_VERBOSE)
526 printf("%s\n", ra);
527 key_free(public);
528 xfree(comment);
529 xfree(ra);
530 xfree(fp);
531 exit(0);
532 }
533 if (comment) {
534 xfree(comment);
535 comment = NULL;
536 }
537
538 f = fopen(identity_file, "r");
539 if (f != NULL) {
540 while (fgets(line, sizeof(line), f)) {
541 if ((cp = strchr(line, '\n')) == NULL) {
542 error("line %d too long: %.40s...",
543 num + 1, line);
544 skip = 1;
545 continue;
546 }
547 num++;
548 if (skip) {
549 skip = 0;
550 continue;
551 }
552 *cp = '\0';
553
554 /* Skip leading whitespace, empty and comment lines. */
555 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
556 ;
557 if (!*cp || *cp == '\n' || *cp == '#')
558 continue;
559 i = strtol(cp, &ep, 10);
560 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
561 int quoted = 0;
562 comment = cp;
563 for (; *cp && (quoted || (*cp != ' ' &&
564 *cp != '\t')); cp++) {
565 if (*cp == '\\' && cp[1] == '"')
566 cp++; /* Skip both */
567 else if (*cp == '"')
568 quoted = !quoted;
569 }
570 if (!*cp)
571 continue;
572 *cp++ = '\0';
573 }
574 ep = cp;
575 public = key_new(KEY_RSA1);
576 if (key_read(public, &cp) != 1) {
577 cp = ep;
578 key_free(public);
579 public = key_new(KEY_UNSPEC);
580 if (key_read(public, &cp) != 1) {
581 key_free(public);
582 continue;
583 }
584 }
585 comment = *cp ? cp : comment;
586 fp = key_fingerprint(public, fptype, rep);
587 ra = key_fingerprint(public, fptype, SSH_FP_RANDOMART);
588 printf("%u %s %s (%s)\n", key_size(public), fp,
589 comment ? comment : "no comment", key_type(public));
590 if (log_level >= SYSLOG_LEVEL_VERBOSE)
591 printf("%s\n", ra);
592 xfree(ra);
593 xfree(fp);
594 key_free(public);
595 invalid = 0;
596 }
597 fclose(f);
598 }
599 if (invalid) {
600 printf("%s is not a public key file.\n", identity_file);
601 exit(1);
602 }
603 exit(0);
604 }
605
606 static void
607 print_host(FILE *f, const char *name, Key *public, int hash)
608 {
609 if (print_fingerprint) {
610 enum fp_rep rep;
611 enum fp_type fptype;
612 char *fp, *ra;
613
614 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
615 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
616 fp = key_fingerprint(public, fptype, rep);
617 ra = key_fingerprint(public, fptype, SSH_FP_RANDOMART);
618 printf("%u %s %s (%s)\n", key_size(public), fp, name,
619 key_type(public));
620 if (log_level >= SYSLOG_LEVEL_VERBOSE)
621 printf("%s\n", ra);
622 xfree(ra);
623 xfree(fp);
624 } else {
625 if (hash && (name = host_hash(name, NULL, 0)) == NULL)
626 fatal("hash_host failed");
627 fprintf(f, "%s ", name);
628 if (!key_write(public, f))
629 fatal("key_write failed");
630 fprintf(f, "\n");
631 }
632 }
633
634 static void
635 do_known_hosts(struct passwd *pw, const char *name)
636 {
637 FILE *in, *out = stdout;
638 Key *public;
639 char *cp, *cp2, *kp, *kp2;
640 char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
641 int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
642
643 if (!have_identity) {
644 cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
645 if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
646 sizeof(identity_file))
647 fatal("Specified known hosts path too long");
648 xfree(cp);
649 have_identity = 1;
650 }
651 if ((in = fopen(identity_file, "r")) == NULL)
652 fatal("fopen: %s", strerror(errno));
653
654 /*
655 * Find hosts goes to stdout, hash and deletions happen in-place
656 * A corner case is ssh-keygen -HF foo, which should go to stdout
657 */
658 if (!find_host && (hash_hosts || delete_host)) {
659 if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
660 strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
661 strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
662 strlcat(old, ".old", sizeof(old)) >= sizeof(old))
663 fatal("known_hosts path too long");
664 umask(077);
665 if ((c = mkstemp(tmp)) == -1)
666 fatal("mkstemp: %s", strerror(errno));
667 if ((out = fdopen(c, "w")) == NULL) {
668 c = errno;
669 unlink(tmp);
670 fatal("fdopen: %s", strerror(c));
671 }
672 inplace = 1;
673 }
674
675 while (fgets(line, sizeof(line), in)) {
676 if ((cp = strchr(line, '\n')) == NULL) {
677 error("line %d too long: %.40s...", num + 1, line);
678 skip = 1;
679 invalid = 1;
680 continue;
681 }
682 num++;
683 if (skip) {
684 skip = 0;
685 continue;
686 }
687 *cp = '\0';
688
689 /* Skip leading whitespace, empty and comment lines. */
690 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
691 ;
692 if (!*cp || *cp == '\n' || *cp == '#') {
693 if (inplace)
694 fprintf(out, "%s\n", cp);
695 continue;
696 }
697 /* Find the end of the host name portion. */
698 for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
699 ;
700 if (*kp == '\0' || *(kp + 1) == '\0') {
701 error("line %d missing key: %.40s...",
702 num, line);
703 invalid = 1;
704 continue;
705 }
706 *kp++ = '\0';
707 kp2 = kp;
708
709 public = key_new(KEY_RSA1);
710 if (key_read(public, &kp) != 1) {
711 kp = kp2;
712 key_free(public);
713 public = key_new(KEY_UNSPEC);
714 if (key_read(public, &kp) != 1) {
715 error("line %d invalid key: %.40s...",
716 num, line);
717 key_free(public);
718 invalid = 1;
719 continue;
720 }
721 }
722
723 if (*cp == HASH_DELIM) {
724 if (find_host || delete_host) {
725 cp2 = host_hash(name, cp, strlen(cp));
726 if (cp2 == NULL) {
727 error("line %d: invalid hashed "
728 "name: %.64s...", num, line);
729 invalid = 1;
730 continue;
731 }
732 c = (strcmp(cp2, cp) == 0);
733 if (find_host && c) {
734 printf("# Host %s found: "
735 "line %d type %s\n", name,
736 num, key_type(public));
737 print_host(out, cp, public, 0);
738 }
739 if (delete_host && !c)
740 print_host(out, cp, public, 0);
741 } else if (hash_hosts)
742 print_host(out, cp, public, 0);
743 } else {
744 if (find_host || delete_host) {
745 c = (match_hostname(name, cp,
746 strlen(cp)) == 1);
747 if (find_host && c) {
748 printf("# Host %s found: "
749 "line %d type %s\n", name,
750 num, key_type(public));
751 print_host(out, name, public,
752 hash_hosts);
753 }
754 if (delete_host && !c)
755 print_host(out, cp, public, 0);
756 } else if (hash_hosts) {
757 for (cp2 = strsep(&cp, ",");
758 cp2 != NULL && *cp2 != '\0';
759 cp2 = strsep(&cp, ",")) {
760 if (strcspn(cp2, "*?!") != strlen(cp2))
761 fprintf(stderr, "Warning: "
762 "ignoring host name with "
763 "metacharacters: %.64s\n",
764 cp2);
765 else
766 print_host(out, cp2, public, 1);
767 }
768 has_unhashed = 1;
769 }
770 }
771 key_free(public);
772 }
773 fclose(in);
774
775 if (invalid) {
776 fprintf(stderr, "%s is not a valid known_hosts file.\n",
777 identity_file);
778 if (inplace) {
779 fprintf(stderr, "Not replacing existing known_hosts "
780 "file because of errors\n");
781 fclose(out);
782 unlink(tmp);
783 }
784 exit(1);
785 }
786
787 if (inplace) {
788 fclose(out);
789
790 /* Backup existing file */
791 if (unlink(old) == -1 && errno != ENOENT)
792 fatal("unlink %.100s: %s", old, strerror(errno));
793 if (link(identity_file, old) == -1)
794 fatal("link %.100s to %.100s: %s", identity_file, old,
795 strerror(errno));
796 /* Move new one into place */
797 if (rename(tmp, identity_file) == -1) {
798 error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
799 strerror(errno));
800 unlink(tmp);
801 unlink(old);
802 exit(1);
803 }
804
805 fprintf(stderr, "%s updated.\n", identity_file);
806 fprintf(stderr, "Original contents retained as %s\n", old);
807 if (has_unhashed) {
808 fprintf(stderr, "WARNING: %s contains unhashed "
809 "entries\n", old);
810 fprintf(stderr, "Delete this file to ensure privacy "
811 "of hostnames\n");
812 }
813 }
814
815 exit(0);
816 }
817
818 /*
819 * Perform changing a passphrase. The argument is the passwd structure
820 * for the current user.
821 */
822 static void
823 do_change_passphrase(struct passwd *pw)
824 {
825 char *comment;
826 char *old_passphrase, *passphrase1, *passphrase2;
827 struct stat st;
828 Key *private;
829
830 if (!have_identity)
831 ask_filename(pw, "Enter file in which the key is");
832 if (stat(identity_file, &st) < 0) {
833 perror(identity_file);
834 exit(1);
835 }
836 /* Try to load the file with empty passphrase. */
837 private = key_load_private(identity_file, "", &comment);
838 if (private == NULL) {
839 if (identity_passphrase)
840 old_passphrase = xstrdup(identity_passphrase);
841 else
842 old_passphrase =
843 read_passphrase("Enter old passphrase: ",
844 RP_ALLOW_STDIN);
845 private = key_load_private(identity_file, old_passphrase,
846 &comment);
847 memset(old_passphrase, 0, strlen(old_passphrase));
848 xfree(old_passphrase);
849 if (private == NULL) {
850 printf("Bad passphrase.\n");
851 exit(1);
852 }
853 }
854 printf("Key has comment '%s'\n", comment);
855
856 /* Ask the new passphrase (twice). */
857 if (identity_new_passphrase) {
858 passphrase1 = xstrdup(identity_new_passphrase);
859 passphrase2 = NULL;
860 } else {
861 passphrase1 =
862 read_passphrase("Enter new passphrase (empty for no "
863 "passphrase): ", RP_ALLOW_STDIN);
864 passphrase2 = read_passphrase("Enter same passphrase again: ",
865 RP_ALLOW_STDIN);
866
867 /* Verify that they are the same. */
868 if (strcmp(passphrase1, passphrase2) != 0) {
869 memset(passphrase1, 0, strlen(passphrase1));
870 memset(passphrase2, 0, strlen(passphrase2));
871 xfree(passphrase1);
872 xfree(passphrase2);
873 printf("Pass phrases do not match. Try again.\n");
874 exit(1);
875 }
876 /* Destroy the other copy. */
877 memset(passphrase2, 0, strlen(passphrase2));
878 xfree(passphrase2);
879 }
880
881 /* Save the file using the new passphrase. */
882 if (!key_save_private(private, identity_file, passphrase1, comment)) {
883 printf("Saving the key failed: %s.\n", identity_file);
884 memset(passphrase1, 0, strlen(passphrase1));
885 xfree(passphrase1);
886 key_free(private);
887 xfree(comment);
888 exit(1);
889 }
890 /* Destroy the passphrase and the copy of the key in memory. */
891 memset(passphrase1, 0, strlen(passphrase1));
892 xfree(passphrase1);
893 key_free(private); /* Destroys contents */
894 xfree(comment);
895
896 printf("Your identification has been saved with the new passphrase.\n");
897 exit(0);
898 }
899
900 /*
901 * Print the SSHFP RR.
902 */
903 static int
904 do_print_resource_record(struct passwd *pw, char *fname, char *hname)
905 {
906 Key *public;
907 char *comment = NULL;
908 struct stat st;
909
910 if (fname == NULL)
911 ask_filename(pw, "Enter file in which the key is");
912 if (stat(fname, &st) < 0) {
913 if (errno == ENOENT)
914 return 0;
915 perror(fname);
916 exit(1);
917 }
918 public = key_load_public(fname, &comment);
919 if (public != NULL) {
920 export_dns_rr(hname, public, stdout, print_generic);
921 key_free(public);
922 xfree(comment);
923 return 1;
924 }
925 if (comment)
926 xfree(comment);
927
928 printf("failed to read v2 public key from %s.\n", fname);
929 exit(1);
930 }
931
932 /*
933 * Change the comment of a private key file.
934 */
935 static void
936 do_change_comment(struct passwd *pw)
937 {
938 char new_comment[1024], *comment, *passphrase;
939 Key *private;
940 Key *public;
941 struct stat st;
942 FILE *f;
943 int fd;
944
945 if (!have_identity)
946 ask_filename(pw, "Enter file in which the key is");
947 if (stat(identity_file, &st) < 0) {
948 perror(identity_file);
949 exit(1);
950 }
951 private = key_load_private(identity_file, "", &comment);
952 if (private == NULL) {
953 if (identity_passphrase)
954 passphrase = xstrdup(identity_passphrase);
955 else if (identity_new_passphrase)
956 passphrase = xstrdup(identity_new_passphrase);
957 else
958 passphrase = read_passphrase("Enter passphrase: ",
959 RP_ALLOW_STDIN);
960 /* Try to load using the passphrase. */
961 private = key_load_private(identity_file, passphrase, &comment);
962 if (private == NULL) {
963 memset(passphrase, 0, strlen(passphrase));
964 xfree(passphrase);
965 printf("Bad passphrase.\n");
966 exit(1);
967 }
968 } else {
969 passphrase = xstrdup("");
970 }
971 if (private->type != KEY_RSA1) {
972 fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
973 key_free(private);
974 exit(1);
975 }
976 printf("Key now has comment '%s'\n", comment);
977
978 if (identity_comment) {
979 strlcpy(new_comment, identity_comment, sizeof(new_comment));
980 } else {
981 printf("Enter new comment: ");
982 fflush(stdout);
983 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
984 memset(passphrase, 0, strlen(passphrase));
985 key_free(private);
986 exit(1);
987 }
988 new_comment[strcspn(new_comment, "\n")] = '\0';
989 }
990
991 /* Save the file using the new passphrase. */
992 if (!key_save_private(private, identity_file, passphrase, new_comment)) {
993 printf("Saving the key failed: %s.\n", identity_file);
994 memset(passphrase, 0, strlen(passphrase));
995 xfree(passphrase);
996 key_free(private);
997 xfree(comment);
998 exit(1);
999 }
1000 memset(passphrase, 0, strlen(passphrase));
1001 xfree(passphrase);
1002 public = key_from_private(private);
1003 key_free(private);
1004
1005 strlcat(identity_file, ".pub", sizeof(identity_file));
1006 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1007 if (fd == -1) {
1008 printf("Could not save your public key in %s\n", identity_file);
1009 exit(1);
1010 }
1011 f = fdopen(fd, "w");
1012 if (f == NULL) {
1013 printf("fdopen %s failed\n", identity_file);
1014 exit(1);
1015 }
1016 if (!key_write(public, f))
1017 fprintf(stderr, "write key failed\n");
1018 key_free(public);
1019 fprintf(f, " %s\n", new_comment);
1020 fclose(f);
1021
1022 xfree(comment);
1023
1024 printf("The comment in your key file has been changed.\n");
1025 exit(0);
1026 }
1027
1028 static void
1029 usage(void)
1030 {
1031 fprintf(stderr, "usage: %s [options]\n", __progname);
1032 fprintf(stderr, "Options:\n");
1033 fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
1034 fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
1035 fprintf(stderr, " -b bits Number of bits in the key to create.\n");
1036 fprintf(stderr, " -C comment Provide new comment.\n");
1037 fprintf(stderr, " -c Change comment in private and public key files.\n");
1038 #ifdef SMARTCARD
1039 fprintf(stderr, " -D reader Download public key from smartcard.\n");
1040 #endif /* SMARTCARD */
1041 fprintf(stderr, " -e Convert OpenSSH to RFC 4716 key file.\n");
1042 fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
1043 fprintf(stderr, " -f filename Filename of the key file.\n");
1044 fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
1045 fprintf(stderr, " -g Use generic DNS resource record format.\n");
1046 fprintf(stderr, " -H Hash names in known_hosts file.\n");
1047 fprintf(stderr, " -i Convert RFC 4716 to OpenSSH key file.\n");
1048 fprintf(stderr, " -l Show fingerprint of key file.\n");
1049 fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
1050 fprintf(stderr, " -N phrase Provide new passphrase.\n");
1051 fprintf(stderr, " -P phrase Provide old passphrase.\n");
1052 fprintf(stderr, " -p Change passphrase of private key file.\n");
1053 fprintf(stderr, " -q Quiet.\n");
1054 fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
1055 fprintf(stderr, " -r hostname Print DNS resource record.\n");
1056 fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
1057 fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
1058 fprintf(stderr, " -t type Specify type of key to create.\n");
1059 #ifdef SMARTCARD
1060 fprintf(stderr, " -U reader Upload private key to smartcard.\n");
1061 #endif /* SMARTCARD */
1062 fprintf(stderr, " -v Verbose.\n");
1063 fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
1064 fprintf(stderr, " -y Read private key file and print public key.\n");
1065
1066 exit(1);
1067 }
1068
1069 /*
1070 * Main program for key management.
1071 */
1072 int
1073 main(int argc, char **argv)
1074 {
1075 char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
1076 char out_file[MAXPATHLEN], *reader_id = NULL;
1077 char *rr_hostname = NULL;
1078 Key *private, *public;
1079 struct passwd *pw;
1080 struct stat st;
1081 int opt, type, fd, download = 0;
1082 u_int32_t memory = 0, generator_wanted = 0, trials = 100;
1083 int do_gen_candidates = 0, do_screen_candidates = 0;
1084 BIGNUM *start = NULL;
1085 FILE *f;
1086 const char *errstr;
1087
1088 extern int optind;
1089 extern char *optarg;
1090
1091 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
1092 sanitise_stdfd();
1093
1094 SSLeay_add_all_algorithms();
1095 log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1096
1097 /* we need this for the home * directory. */
1098 pw = getpwuid(getuid());
1099 if (!pw) {
1100 printf("You don't exist, go away!\n");
1101 exit(1);
1102 }
1103 if (gethostname(hostname, sizeof(hostname)) < 0) {
1104 perror("gethostname");
1105 exit(1);
1106 }
1107
1108 while ((opt = getopt(argc, argv,
1109 "degiqpclBHvxXyF:b:f:t:U:D:P:N:C:r:g:R:T:G:M:S:a:W:")) != -1) {
1110 switch (opt) {
1111 case 'b':
1112 bits = (u_int32_t)strtonum(optarg, 768, 32768, &errstr);
1113 if (errstr)
1114 fatal("Bits has bad value %s (%s)",
1115 optarg, errstr);
1116 break;
1117 case 'F':
1118 find_host = 1;
1119 rr_hostname = optarg;
1120 break;
1121 case 'H':
1122 hash_hosts = 1;
1123 break;
1124 case 'R':
1125 delete_host = 1;
1126 rr_hostname = optarg;
1127 break;
1128 case 'l':
1129 print_fingerprint = 1;
1130 break;
1131 case 'B':
1132 print_bubblebabble = 1;
1133 break;
1134 case 'p':
1135 change_passphrase = 1;
1136 break;
1137 case 'c':
1138 change_comment = 1;
1139 break;
1140 case 'f':
1141 if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
1142 sizeof(identity_file))
1143 fatal("Identity filename too long");
1144 have_identity = 1;
1145 break;
1146 case 'g':
1147 print_generic = 1;
1148 break;
1149 case 'P':
1150 identity_passphrase = optarg;
1151 break;
1152 case 'N':
1153 identity_new_passphrase = optarg;
1154 break;
1155 case 'C':
1156 identity_comment = optarg;
1157 break;
1158 case 'q':
1159 quiet = 1;
1160 break;
1161 case 'e':
1162 case 'x':
1163 /* export key */
1164 convert_to_ssh2 = 1;
1165 break;
1166 case 'i':
1167 case 'X':
1168 /* import key */
1169 convert_from_ssh2 = 1;
1170 break;
1171 case 'y':
1172 print_public = 1;
1173 break;
1174 case 'd':
1175 key_type_name = "dsa";
1176 break;
1177 case 't':
1178 key_type_name = optarg;
1179 break;
1180 case 'D':
1181 download = 1;
1182 /*FALLTHROUGH*/
1183 case 'U':
1184 reader_id = optarg;
1185 break;
1186 case 'v':
1187 if (log_level == SYSLOG_LEVEL_INFO)
1188 log_level = SYSLOG_LEVEL_DEBUG1;
1189 else {
1190 if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
1191 log_level < SYSLOG_LEVEL_DEBUG3)
1192 log_level++;
1193 }
1194 break;
1195 case 'r':
1196 rr_hostname = optarg;
1197 break;
1198 case 'W':
1199 generator_wanted = (u_int32_t)strtonum(optarg, 1,
1200 UINT_MAX, &errstr);
1201 if (errstr)
1202 fatal("Desired generator has bad value: %s (%s)",
1203 optarg, errstr);
1204 break;
1205 case 'a':
1206 trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1207 if (errstr)
1208 fatal("Invalid number of trials: %s (%s)",
1209 optarg, errstr);
1210 break;
1211 case 'M':
1212 memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr);
1213 if (errstr) {
1214 fatal("Memory limit is %s: %s", errstr, optarg);
1215 }
1216 break;
1217 case 'G':
1218 do_gen_candidates = 1;
1219 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1220 sizeof(out_file))
1221 fatal("Output filename too long");
1222 break;
1223 case 'T':
1224 do_screen_candidates = 1;
1225 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1226 sizeof(out_file))
1227 fatal("Output filename too long");
1228 break;
1229 case 'S':
1230 /* XXX - also compare length against bits */
1231 if (BN_hex2bn(&start, optarg) == 0)
1232 fatal("Invalid start point.");
1233 break;
1234 case '?':
1235 default:
1236 usage();
1237 }
1238 }
1239
1240 /* reinit */
1241 log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
1242
1243 if (optind < argc) {
1244 printf("Too many arguments.\n");
1245 usage();
1246 }
1247 if (change_passphrase && change_comment) {
1248 printf("Can only have one of -p and -c.\n");
1249 usage();
1250 }
1251 if (print_fingerprint && (delete_host || hash_hosts)) {
1252 printf("Cannot use -l with -D or -R.\n");
1253 usage();
1254 }
1255 if (delete_host || hash_hosts || find_host)
1256 do_known_hosts(pw, rr_hostname);
1257 if (print_fingerprint || print_bubblebabble)
1258 do_fingerprint(pw);
1259 if (change_passphrase)
1260 do_change_passphrase(pw);
1261 if (change_comment)
1262 do_change_comment(pw);
1263 if (convert_to_ssh2)
1264 do_convert_to_ssh2(pw);
1265 if (convert_from_ssh2)
1266 do_convert_from_ssh2(pw);
1267 if (print_public)
1268 do_print_public(pw);
1269 if (rr_hostname != NULL) {
1270 unsigned int n = 0;
1271
1272 if (have_identity) {
1273 n = do_print_resource_record(pw,
1274 identity_file, rr_hostname);
1275 if (n == 0) {
1276 perror(identity_file);
1277 exit(1);
1278 }
1279 exit(0);
1280 } else {
1281
1282 n += do_print_resource_record(pw,
1283 _PATH_HOST_RSA_KEY_FILE, rr_hostname);
1284 n += do_print_resource_record(pw,
1285 _PATH_HOST_DSA_KEY_FILE, rr_hostname);
1286
1287 if (n == 0)
1288 fatal("no keys found.");
1289 exit(0);
1290 }
1291 }
1292 if (reader_id != NULL) {
1293 #ifdef SMARTCARD
1294 if (download)
1295 do_download(pw, reader_id);
1296 else
1297 do_upload(pw, reader_id);
1298 #else /* SMARTCARD */
1299 fatal("no support for smartcards.");
1300 #endif /* SMARTCARD */
1301 }
1302
1303 if (do_gen_candidates) {
1304 FILE *out = fopen(out_file, "w");
1305
1306 if (out == NULL) {
1307 error("Couldn't open modulus candidate file \"%s\": %s",
1308 out_file, strerror(errno));
1309 return (1);
1310 }
1311 if (bits == 0)
1312 bits = DEFAULT_BITS;
1313 if (gen_candidates(out, memory, bits, start) != 0)
1314 fatal("modulus candidate generation failed");
1315
1316 return (0);
1317 }
1318
1319 if (do_screen_candidates) {
1320 FILE *in;
1321 FILE *out = fopen(out_file, "w");
1322
1323 if (have_identity && strcmp(identity_file, "-") != 0) {
1324 if ((in = fopen(identity_file, "r")) == NULL) {
1325 fatal("Couldn't open modulus candidate "
1326 "file \"%s\": %s", identity_file,
1327 strerror(errno));
1328 }
1329 } else
1330 in = stdin;
1331
1332 if (out == NULL) {
1333 fatal("Couldn't open moduli file \"%s\": %s",
1334 out_file, strerror(errno));
1335 }
1336 if (prime_test(in, out, trials, generator_wanted) != 0)
1337 fatal("modulus screening failed");
1338 return (0);
1339 }
1340
1341 arc4random_stir();
1342
1343 if (key_type_name == NULL)
1344 key_type_name = "rsa";
1345
1346 type = key_type_from_name(key_type_name);
1347 if (type == KEY_UNSPEC) {
1348 fprintf(stderr, "unknown key type %s\n", key_type_name);
1349 exit(1);
1350 }
1351 if (bits == 0)
1352 bits = (type == KEY_DSA) ? DEFAULT_BITS_DSA : DEFAULT_BITS;
1353 if (type == KEY_DSA && bits != 1024)
1354 fatal("DSA keys must be 1024 bits");
1355 if (!quiet)
1356 printf("Generating public/private %s key pair.\n", key_type_name);
1357 private = key_generate(type, bits);
1358 if (private == NULL) {
1359 fprintf(stderr, "key_generate failed\n");
1360 exit(1);
1361 }
1362 public = key_from_private(private);
1363
1364 if (!have_identity)
1365 ask_filename(pw, "Enter file in which to save the key");
1366
1367 /* Create ~/.ssh directory if it doesn't already exist. */
1368 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR);
1369 if (strstr(identity_file, dotsshdir) != NULL &&
1370 stat(dotsshdir, &st) < 0) {
1371 if (mkdir(dotsshdir, 0700) < 0)
1372 error("Could not create directory '%s'.", dotsshdir);
1373 else if (!quiet)
1374 printf("Created directory '%s'.\n", dotsshdir);
1375 }
1376 /* If the file already exists, ask the user to confirm. */
1377 if (stat(identity_file, &st) >= 0) {
1378 char yesno[3];
1379 printf("%s already exists.\n", identity_file);
1380 printf("Overwrite (y/n)? ");
1381 fflush(stdout);
1382 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
1383 exit(1);
1384 if (yesno[0] != 'y' && yesno[0] != 'Y')
1385 exit(1);
1386 }
1387 /* Ask for a passphrase (twice). */
1388 if (identity_passphrase)
1389 passphrase1 = xstrdup(identity_passphrase);
1390 else if (identity_new_passphrase)
1391 passphrase1 = xstrdup(identity_new_passphrase);
1392 else {
1393 passphrase_again:
1394 passphrase1 =
1395 read_passphrase("Enter passphrase (empty for no "
1396 "passphrase): ", RP_ALLOW_STDIN);
1397 passphrase2 = read_passphrase("Enter same passphrase again: ",
1398 RP_ALLOW_STDIN);
1399 if (strcmp(passphrase1, passphrase2) != 0) {
1400 /*
1401 * The passphrases do not match. Clear them and
1402 * retry.
1403 */
1404 memset(passphrase1, 0, strlen(passphrase1));
1405 memset(passphrase2, 0, strlen(passphrase2));
1406 xfree(passphrase1);
1407 xfree(passphrase2);
1408 printf("Passphrases do not match. Try again.\n");
1409 goto passphrase_again;
1410 }
1411 /* Clear the other copy of the passphrase. */
1412 memset(passphrase2, 0, strlen(passphrase2));
1413 xfree(passphrase2);
1414 }
1415
1416 if (identity_comment) {
1417 strlcpy(comment, identity_comment, sizeof(comment));
1418 } else {
1419 /* Create default comment field for the passphrase. */
1420 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
1421 }
1422
1423 /* Save the key with the given passphrase and comment. */
1424 if (!key_save_private(private, identity_file, passphrase1, comment)) {
1425 printf("Saving the key failed: %s.\n", identity_file);
1426 memset(passphrase1, 0, strlen(passphrase1));
1427 xfree(passphrase1);
1428 exit(1);
1429 }
1430 /* Clear the passphrase. */
1431 memset(passphrase1, 0, strlen(passphrase1));
1432 xfree(passphrase1);
1433
1434 /* Clear the private key and the random number generator. */
1435 key_free(private);
1436 arc4random_stir();
1437
1438 if (!quiet)
1439 printf("Your identification has been saved in %s.\n", identity_file);
1440
1441 strlcat(identity_file, ".pub", sizeof(identity_file));
1442 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1443 if (fd == -1) {
1444 printf("Could not save your public key in %s\n", identity_file);
1445 exit(1);
1446 }
1447 f = fdopen(fd, "w");
1448 if (f == NULL) {
1449 printf("fdopen %s failed\n", identity_file);
1450 exit(1);
1451 }
1452 if (!key_write(public, f))
1453 fprintf(stderr, "write key failed\n");
1454 fprintf(f, " %s\n", comment);
1455 fclose(f);
1456
1457 if (!quiet) {
1458 char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
1459 char *ra = key_fingerprint(public, SSH_FP_MD5,
1460 SSH_FP_RANDOMART);
1461 printf("Your public key has been saved in %s.\n",
1462 identity_file);
1463 printf("The key fingerprint is:\n");
1464 printf("%s %s\n", fp, comment);
1465 printf("The key's randomart image is:\n");
1466 printf("%s\n", ra);
1467 xfree(ra);
1468 xfree(fp);
1469 }
1470
1471 key_free(public);
1472 exit(0);
1473 }
NetBSD on the FriendlyARM MINI2440