blob: 828d2be79c4b7d867bd2f58fd36b7d78dd3440e1 [file] [log] [blame]
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001/*
Damien Miller95def091999-11-25 00:26:21 +11002 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
Damien Miller95def091999-11-25 00:26:21 +11005 * Identity and host key generation and maintenance.
Damien Millere4340be2000-09-16 13:29:08 +11006 *
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110012 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100013
14#include "includes.h"
Damien Millerac7ef6a2005-06-16 13:19:06 +100015RCSID("$OpenBSD: ssh-keygen.c,v 1.127 2005/06/08 03:50:00 djm Exp $");
Damien Millerd4a8b7e1999-10-27 13:42:43 +100016
Damien Millereba71ba2000-04-29 23:57:08 +100017#include <openssl/evp.h>
18#include <openssl/pem.h>
Damien Millereba71ba2000-04-29 23:57:08 +100019
Damien Millerd4a8b7e1999-10-27 13:42:43 +100020#include "xmalloc.h"
Damien Millereba71ba2000-04-29 23:57:08 +100021#include "key.h"
Ben Lindstromd09fcf52001-03-29 00:29:54 +000022#include "rsa.h"
Damien Millereba71ba2000-04-29 23:57:08 +100023#include "authfile.h"
24#include "uuencode.h"
Damien Miller874d77b2000-10-14 16:23:11 +110025#include "buffer.h"
26#include "bufaux.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000027#include "pathnames.h"
28#include "log.h"
Darren Tuckere608ca22004-05-13 16:15:47 +100029#include "misc.h"
Damien Miller4b42d7f2005-03-01 21:48:35 +110030#include "match.h"
31#include "hostfile.h"
Damien Miller874d77b2000-10-14 16:23:11 +110032
Ben Lindstrom8282d6a2001-08-06 21:44:05 +000033#ifdef SMARTCARD
Ben Lindstrom8282d6a2001-08-06 21:44:05 +000034#include "scard.h"
Ben Lindstrombcc18082001-08-06 21:59:25 +000035#endif
Damien Millered12a262003-05-15 13:37:43 +100036#include "dns.h"
Ben Lindstromcd392282001-07-04 03:44:03 +000037
Damien Millereba71ba2000-04-29 23:57:08 +100038/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */
Damien Millerac7ef6a2005-06-16 13:19:06 +100039u_int32_t bits = 2048;
Damien Millerd4a8b7e1999-10-27 13:42:43 +100040
Damien Miller5428f641999-11-25 11:54:57 +110041/*
42 * Flag indicating that we just want to change the passphrase. This can be
43 * set on the command line.
44 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100045int change_passphrase = 0;
46
Damien Miller5428f641999-11-25 11:54:57 +110047/*
48 * Flag indicating that we just want to change the comment. This can be set
49 * on the command line.
50 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100051int change_comment = 0;
52
53int quiet = 0;
54
Damien Miller4b42d7f2005-03-01 21:48:35 +110055/* Flag indicating that we want to hash a known_hosts file */
56int hash_hosts = 0;
57/* Flag indicating that we want lookup a host in known_hosts file */
58int find_host = 0;
59/* Flag indicating that we want to delete a host from a known_hosts file */
60int delete_host = 0;
61
Damien Miller10f6f6b1999-11-17 17:29:08 +110062/* Flag indicating that we just want to see the key fingerprint */
63int print_fingerprint = 0;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +000064int print_bubblebabble = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +110065
Damien Miller431f66b1999-11-21 18:31:57 +110066/* The identity file name, given on the command line or entered by the user. */
67char identity_file[1024];
68int have_identity = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +100069
70/* This is set to the passphrase if given on the command line. */
71char *identity_passphrase = NULL;
72
73/* This is set to the new passphrase if given on the command line. */
74char *identity_new_passphrase = NULL;
75
76/* This is set to the new comment if given on the command line. */
77char *identity_comment = NULL;
78
Damien Millereba71ba2000-04-29 23:57:08 +100079/* Dump public key file in format used by real and the original SSH 2 */
80int convert_to_ssh2 = 0;
81int convert_from_ssh2 = 0;
82int print_public = 0;
Damien Miller37876e92003-05-15 10:19:46 +100083int print_generic = 0;
Damien Miller0bc1bd82000-11-13 22:57:25 +110084
Damien Millera41c8b12002-01-22 23:05:08 +110085char *key_type_name = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +100086
Damien Miller431f66b1999-11-21 18:31:57 +110087/* argv0 */
88extern char *__progname;
Damien Millerd4a8b7e1999-10-27 13:42:43 +100089
Damien Millereba71ba2000-04-29 23:57:08 +100090char hostname[MAXHOSTNAMELEN];
91
Darren Tucker770fc012004-05-13 16:24:32 +100092/* moduli.c */
Damien Millerb089fb52005-05-26 12:16:18 +100093int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
Darren Tucker770fc012004-05-13 16:24:32 +100094int prime_test(FILE *, FILE *, u_int32_t, u_int32_t);
95
Ben Lindstrombba81212001-06-25 05:01:22 +000096static void
Damien Miller431f66b1999-11-21 18:31:57 +110097ask_filename(struct passwd *pw, const char *prompt)
Damien Millerd4a8b7e1999-10-27 13:42:43 +100098{
Damien Miller95def091999-11-25 00:26:21 +110099 char buf[1024];
Damien Millere39cacc2000-11-29 12:18:44 +1100100 char *name = NULL;
101
Damien Miller993dd552002-02-19 15:22:47 +1100102 if (key_type_name == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000103 name = _PATH_SSH_CLIENT_ID_RSA;
Damien Miller993dd552002-02-19 15:22:47 +1100104 else
105 switch (key_type_from_name(key_type_name)) {
106 case KEY_RSA1:
107 name = _PATH_SSH_CLIENT_IDENTITY;
108 break;
109 case KEY_DSA:
110 name = _PATH_SSH_CLIENT_ID_DSA;
111 break;
112 case KEY_RSA:
113 name = _PATH_SSH_CLIENT_ID_RSA;
114 break;
115 default:
116 fprintf(stderr, "bad key type");
117 exit(1);
118 break;
119 }
120
Damien Millere39cacc2000-11-29 12:18:44 +1100121 snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
Ben Lindstrom3deda8b2000-12-22 20:27:43 +0000122 fprintf(stderr, "%s (%s): ", prompt, identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100123 if (fgets(buf, sizeof(buf), stdin) == NULL)
124 exit(1);
125 if (strchr(buf, '\n'))
126 *strchr(buf, '\n') = 0;
127 if (strcmp(buf, "") != 0)
128 strlcpy(identity_file, buf, sizeof(identity_file));
129 have_identity = 1;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100130}
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000131
Ben Lindstrombba81212001-06-25 05:01:22 +0000132static Key *
Ben Lindstromd78ae762001-06-05 20:35:09 +0000133load_identity(char *filename)
Damien Millereba71ba2000-04-29 23:57:08 +1000134{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000135 char *pass;
136 Key *prv;
137
Ben Lindstroma3700052001-04-05 23:26:32 +0000138 prv = key_load_private(filename, "", NULL);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000139 if (prv == NULL) {
Ben Lindstromd78ae762001-06-05 20:35:09 +0000140 if (identity_passphrase)
141 pass = xstrdup(identity_passphrase);
142 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000143 pass = read_passphrase("Enter passphrase: ",
144 RP_ALLOW_STDIN);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000145 prv = key_load_private(filename, pass, NULL);
Damien Millereba71ba2000-04-29 23:57:08 +1000146 memset(pass, 0, strlen(pass));
147 xfree(pass);
148 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000149 return prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000150}
151
Damien Miller874d77b2000-10-14 16:23:11 +1100152#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
Ben Lindstromcb72e4f2002-06-21 00:41:51 +0000153#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
Damien Miller874d77b2000-10-14 16:23:11 +1100154#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
Kevin Stevesef4eea92001-02-05 12:42:17 +0000155#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
Damien Millereba71ba2000-04-29 23:57:08 +1000156
Ben Lindstrombba81212001-06-25 05:01:22 +0000157static void
Damien Millereba71ba2000-04-29 23:57:08 +1000158do_convert_to_ssh2(struct passwd *pw)
159{
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000160 Key *k;
Ben Lindstromc58ab022002-02-26 18:15:09 +0000161 u_int len;
Ben Lindstrom46c16222000-12-22 01:43:59 +0000162 u_char *blob;
Damien Millereba71ba2000-04-29 23:57:08 +1000163 struct stat st;
164
165 if (!have_identity)
166 ask_filename(pw, "Enter file in which the key is");
167 if (stat(identity_file, &st) < 0) {
168 perror(identity_file);
169 exit(1);
170 }
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000171 if ((k = key_load_public(identity_file, NULL)) == NULL) {
Ben Lindstromd78ae762001-06-05 20:35:09 +0000172 if ((k = load_identity(identity_file)) == NULL) {
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000173 fprintf(stderr, "load failed\n");
174 exit(1);
175 }
Damien Millereba71ba2000-04-29 23:57:08 +1000176 }
Damien Millerdb274722003-05-14 13:45:22 +1000177 if (k->type == KEY_RSA1) {
178 fprintf(stderr, "version 1 keys are not supported\n");
179 exit(1);
180 }
Ben Lindstrom99a30f12001-09-18 05:49:14 +0000181 if (key_to_blob(k, &blob, &len) <= 0) {
182 fprintf(stderr, "key_to_blob failed\n");
183 exit(1);
184 }
Damien Miller874d77b2000-10-14 16:23:11 +1100185 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
Damien Millereba71ba2000-04-29 23:57:08 +1000186 fprintf(stdout,
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000187 "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000188 key_size(k), key_type(k),
Damien Millereba71ba2000-04-29 23:57:08 +1000189 pw->pw_name, hostname);
190 dump_base64(stdout, blob, len);
Damien Miller874d77b2000-10-14 16:23:11 +1100191 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000192 key_free(k);
Damien Millereba71ba2000-04-29 23:57:08 +1000193 xfree(blob);
194 exit(0);
195}
196
Ben Lindstrombba81212001-06-25 05:01:22 +0000197static void
Damien Miller874d77b2000-10-14 16:23:11 +1100198buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
199{
Darren Tucker3f9fdc72004-06-22 12:56:01 +1000200 u_int bignum_bits = buffer_get_int(b);
201 u_int bytes = (bignum_bits + 7) / 8;
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000202
Damien Miller874d77b2000-10-14 16:23:11 +1100203 if (buffer_len(b) < bytes)
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000204 fatal("buffer_get_bignum_bits: input buffer too small: "
205 "need %d have %d", bytes, buffer_len(b));
Damien Miller708d21c2002-01-22 23:18:15 +1100206 BN_bin2bn(buffer_ptr(b), bytes, value);
Damien Miller874d77b2000-10-14 16:23:11 +1100207 buffer_consume(b, bytes);
208}
209
Ben Lindstrombba81212001-06-25 05:01:22 +0000210static Key *
Ben Lindstrom90fd8142002-02-26 18:09:42 +0000211do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
Damien Miller874d77b2000-10-14 16:23:11 +1100212{
213 Buffer b;
Damien Miller874d77b2000-10-14 16:23:11 +1100214 Key *key = NULL;
Damien Miller874d77b2000-10-14 16:23:11 +1100215 char *type, *cipher;
Ben Lindstrom511d69e2001-07-04 05:05:27 +0000216 u_char *sig, data[] = "abcde12345";
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000217 int magic, rlen, ktype, i1, i2, i3, i4;
218 u_int slen;
219 u_long e;
Damien Miller874d77b2000-10-14 16:23:11 +1100220
221 buffer_init(&b);
222 buffer_append(&b, blob, blen);
223
224 magic = buffer_get_int(&b);
225 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
226 error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
227 buffer_free(&b);
228 return NULL;
229 }
Ben Lindstrom34f91882001-06-25 04:47:54 +0000230 i1 = buffer_get_int(&b);
Damien Miller874d77b2000-10-14 16:23:11 +1100231 type = buffer_get_string(&b, NULL);
232 cipher = buffer_get_string(&b, NULL);
Ben Lindstrom34f91882001-06-25 04:47:54 +0000233 i2 = buffer_get_int(&b);
234 i3 = buffer_get_int(&b);
235 i4 = buffer_get_int(&b);
236 debug("ignore (%d %d %d %d)", i1,i2,i3,i4);
Damien Miller874d77b2000-10-14 16:23:11 +1100237 if (strcmp(cipher, "none") != 0) {
238 error("unsupported cipher %s", cipher);
239 xfree(cipher);
240 buffer_free(&b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000241 xfree(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100242 return NULL;
243 }
244 xfree(cipher);
245
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000246 if (strstr(type, "dsa")) {
247 ktype = KEY_DSA;
248 } else if (strstr(type, "rsa")) {
249 ktype = KEY_RSA;
250 } else {
Darren Tucker7cfeecf2005-01-20 10:56:31 +1100251 buffer_free(&b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000252 xfree(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100253 return NULL;
254 }
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000255 key = key_new_private(ktype);
256 xfree(type);
257
258 switch (key->type) {
259 case KEY_DSA:
260 buffer_get_bignum_bits(&b, key->dsa->p);
261 buffer_get_bignum_bits(&b, key->dsa->g);
262 buffer_get_bignum_bits(&b, key->dsa->q);
263 buffer_get_bignum_bits(&b, key->dsa->pub_key);
264 buffer_get_bignum_bits(&b, key->dsa->priv_key);
265 break;
266 case KEY_RSA:
Ben Lindstrom34f91882001-06-25 04:47:54 +0000267 e = buffer_get_char(&b);
268 debug("e %lx", e);
269 if (e < 30) {
270 e <<= 8;
271 e += buffer_get_char(&b);
272 debug("e %lx", e);
273 e <<= 8;
274 e += buffer_get_char(&b);
275 debug("e %lx", e);
276 }
277 if (!BN_set_word(key->rsa->e, e)) {
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000278 buffer_free(&b);
279 key_free(key);
280 return NULL;
281 }
282 buffer_get_bignum_bits(&b, key->rsa->d);
283 buffer_get_bignum_bits(&b, key->rsa->n);
284 buffer_get_bignum_bits(&b, key->rsa->iqmp);
285 buffer_get_bignum_bits(&b, key->rsa->q);
286 buffer_get_bignum_bits(&b, key->rsa->p);
Ben Lindstromf7297dd2001-07-04 05:02:23 +0000287 rsa_generate_additional_parameters(key->rsa);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000288 break;
289 }
Damien Miller874d77b2000-10-14 16:23:11 +1100290 rlen = buffer_len(&b);
Ben Lindstrom1c37c6a2001-12-06 18:00:18 +0000291 if (rlen != 0)
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000292 error("do_convert_private_ssh2_from_blob: "
293 "remaining bytes in key blob %d", rlen);
Damien Miller874d77b2000-10-14 16:23:11 +1100294 buffer_free(&b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000295
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000296 /* try the key */
297 key_sign(key, &sig, &slen, data, sizeof(data));
298 key_verify(key, sig, slen, data, sizeof(data));
299 xfree(sig);
Damien Miller874d77b2000-10-14 16:23:11 +1100300 return key;
301}
302
Ben Lindstrombba81212001-06-25 05:01:22 +0000303static void
Damien Millereba71ba2000-04-29 23:57:08 +1000304do_convert_from_ssh2(struct passwd *pw)
305{
306 Key *k;
307 int blen;
Ben Lindstrom155b9812002-04-02 20:26:26 +0000308 u_int len;
Damien Millereba71ba2000-04-29 23:57:08 +1000309 char line[1024], *p;
Ben Lindstrom9e0ddd42001-09-18 05:41:19 +0000310 u_char blob[8096];
Damien Millereba71ba2000-04-29 23:57:08 +1000311 char encoded[8096];
312 struct stat st;
Damien Miller874d77b2000-10-14 16:23:11 +1100313 int escaped = 0, private = 0, ok;
Damien Millereba71ba2000-04-29 23:57:08 +1000314 FILE *fp;
315
316 if (!have_identity)
317 ask_filename(pw, "Enter file in which the key is");
318 if (stat(identity_file, &st) < 0) {
319 perror(identity_file);
320 exit(1);
321 }
322 fp = fopen(identity_file, "r");
323 if (fp == NULL) {
324 perror(identity_file);
325 exit(1);
326 }
327 encoded[0] = '\0';
328 while (fgets(line, sizeof(line), fp)) {
Damien Miller30c3d422000-05-09 11:02:59 +1000329 if (!(p = strchr(line, '\n'))) {
330 fprintf(stderr, "input line too long.\n");
331 exit(1);
332 }
333 if (p > line && p[-1] == '\\')
334 escaped++;
Damien Millereba71ba2000-04-29 23:57:08 +1000335 if (strncmp(line, "----", 4) == 0 ||
336 strstr(line, ": ") != NULL) {
Damien Miller874d77b2000-10-14 16:23:11 +1100337 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
338 private = 1;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000339 if (strstr(line, " END ") != NULL) {
340 break;
341 }
Ben Lindstrom30358602001-04-24 16:59:28 +0000342 /* fprintf(stderr, "ignore: %s", line); */
Damien Millereba71ba2000-04-29 23:57:08 +1000343 continue;
344 }
Damien Miller30c3d422000-05-09 11:02:59 +1000345 if (escaped) {
346 escaped--;
Ben Lindstrom30358602001-04-24 16:59:28 +0000347 /* fprintf(stderr, "escaped: %s", line); */
Damien Miller30c3d422000-05-09 11:02:59 +1000348 continue;
Damien Millereba71ba2000-04-29 23:57:08 +1000349 }
350 *p = '\0';
351 strlcat(encoded, line, sizeof(encoded));
352 }
Ben Lindstrom155b9812002-04-02 20:26:26 +0000353 len = strlen(encoded);
354 if (((len % 4) == 3) &&
355 (encoded[len-1] == '=') &&
356 (encoded[len-2] == '=') &&
357 (encoded[len-3] == '='))
358 encoded[len-3] = '\0';
Damien Miller4a8ed542002-01-22 23:33:31 +1100359 blen = uudecode(encoded, blob, sizeof(blob));
Damien Millereba71ba2000-04-29 23:57:08 +1000360 if (blen < 0) {
361 fprintf(stderr, "uudecode failed.\n");
362 exit(1);
363 }
Damien Miller874d77b2000-10-14 16:23:11 +1100364 k = private ?
365 do_convert_private_ssh2_from_blob(blob, blen) :
Damien Miller0bc1bd82000-11-13 22:57:25 +1100366 key_from_blob(blob, blen);
Damien Miller874d77b2000-10-14 16:23:11 +1100367 if (k == NULL) {
368 fprintf(stderr, "decode blob failed.\n");
369 exit(1);
370 }
371 ok = private ?
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000372 (k->type == KEY_DSA ?
373 PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
374 PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
Damien Miller874d77b2000-10-14 16:23:11 +1100375 key_write(k, stdout);
376 if (!ok) {
377 fprintf(stderr, "key write failed");
378 exit(1);
379 }
Damien Millereba71ba2000-04-29 23:57:08 +1000380 key_free(k);
Damien Millera1db12b2002-01-22 23:20:15 +1100381 if (!private)
382 fprintf(stdout, "\n");
Damien Millereba71ba2000-04-29 23:57:08 +1000383 fclose(fp);
384 exit(0);
385}
386
Ben Lindstrombba81212001-06-25 05:01:22 +0000387static void
Damien Millereba71ba2000-04-29 23:57:08 +1000388do_print_public(struct passwd *pw)
389{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000390 Key *prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000391 struct stat st;
392
393 if (!have_identity)
394 ask_filename(pw, "Enter file in which the key is");
395 if (stat(identity_file, &st) < 0) {
396 perror(identity_file);
397 exit(1);
398 }
Ben Lindstromd78ae762001-06-05 20:35:09 +0000399 prv = load_identity(identity_file);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000400 if (prv == NULL) {
Damien Millereba71ba2000-04-29 23:57:08 +1000401 fprintf(stderr, "load failed\n");
402 exit(1);
403 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000404 if (!key_write(prv, stdout))
Damien Millereba71ba2000-04-29 23:57:08 +1000405 fprintf(stderr, "key_write failed");
Ben Lindstromd0fca422001-03-26 13:44:06 +0000406 key_free(prv);
Damien Millereba71ba2000-04-29 23:57:08 +1000407 fprintf(stdout, "\n");
408 exit(0);
409}
410
Ben Lindstrom6818bfb2001-08-06 21:40:04 +0000411#ifdef SMARTCARD
Ben Lindstromcd392282001-07-04 03:44:03 +0000412static void
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000413do_upload(struct passwd *pw, const char *sc_reader_id)
Ben Lindstromcd392282001-07-04 03:44:03 +0000414{
Ben Lindstromcd392282001-07-04 03:44:03 +0000415 Key *prv = NULL;
416 struct stat st;
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000417 int ret;
Ben Lindstromcd392282001-07-04 03:44:03 +0000418
419 if (!have_identity)
420 ask_filename(pw, "Enter file in which the key is");
421 if (stat(identity_file, &st) < 0) {
422 perror(identity_file);
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000423 exit(1);
Ben Lindstromcd392282001-07-04 03:44:03 +0000424 }
425 prv = load_identity(identity_file);
426 if (prv == NULL) {
427 error("load failed");
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000428 exit(1);
Ben Lindstromcd392282001-07-04 03:44:03 +0000429 }
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000430 ret = sc_put_key(prv, sc_reader_id);
431 key_free(prv);
432 if (ret < 0)
433 exit(1);
Damien Miller996acd22003-04-09 20:59:48 +1000434 logit("loading key done");
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000435 exit(0);
Ben Lindstromcd392282001-07-04 03:44:03 +0000436}
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000437
438static void
439do_download(struct passwd *pw, const char *sc_reader_id)
440{
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000441 Key **keys = NULL;
442 int i;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000443
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000444 keys = sc_get_keys(sc_reader_id, NULL);
445 if (keys == NULL)
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000446 fatal("cannot read public key from smartcard");
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000447 for (i = 0; keys[i]; i++) {
448 key_write(keys[i], stdout);
449 key_free(keys[i]);
450 fprintf(stdout, "\n");
451 }
452 xfree(keys);
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000453 exit(0);
454}
Ben Lindstromffce1472001-08-06 21:57:31 +0000455#endif /* SMARTCARD */
Ben Lindstromcd392282001-07-04 03:44:03 +0000456
Ben Lindstrombba81212001-06-25 05:01:22 +0000457static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100458do_fingerprint(struct passwd *pw)
459{
Damien Miller98c7ad62000-03-09 21:27:49 +1100460 FILE *f;
Damien Millereba71ba2000-04-29 23:57:08 +1000461 Key *public;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000462 char *comment = NULL, *cp, *ep, line[16*1024], *fp;
Ben Lindstrom65366a82001-12-06 16:32:47 +0000463 int i, skip = 0, num = 1, invalid = 1;
464 enum fp_rep rep;
465 enum fp_type fptype;
Damien Miller95def091999-11-25 00:26:21 +1100466 struct stat st;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100467
Ben Lindstromd0fca422001-03-26 13:44:06 +0000468 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
469 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000470
Damien Miller95def091999-11-25 00:26:21 +1100471 if (!have_identity)
472 ask_filename(pw, "Enter file in which the key is");
473 if (stat(identity_file, &st) < 0) {
474 perror(identity_file);
475 exit(1);
476 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000477 public = key_load_public(identity_file, &comment);
478 if (public != NULL) {
479 fp = key_fingerprint(public, fptype, rep);
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000480 printf("%u %s %s\n", key_size(public), fp, comment);
Damien Miller0bc1bd82000-11-13 22:57:25 +1100481 key_free(public);
482 xfree(comment);
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000483 xfree(fp);
Damien Miller98c7ad62000-03-09 21:27:49 +1100484 exit(0);
485 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000486 if (comment)
487 xfree(comment);
Damien Miller98c7ad62000-03-09 21:27:49 +1100488
489 f = fopen(identity_file, "r");
490 if (f != NULL) {
Damien Miller98c7ad62000-03-09 21:27:49 +1100491 while (fgets(line, sizeof(line), f)) {
492 i = strlen(line) - 1;
493 if (line[i] != '\n') {
494 error("line %d too long: %.40s...", num, line);
495 skip = 1;
496 continue;
Damien Miller95def091999-11-25 00:26:21 +1100497 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100498 num++;
499 if (skip) {
500 skip = 0;
501 continue;
502 }
503 line[i] = '\0';
504
505 /* Skip leading whitespace, empty and comment lines. */
506 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
507 ;
508 if (!*cp || *cp == '\n' || *cp == '#')
509 continue ;
510 i = strtol(cp, &ep, 10);
511 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
512 int quoted = 0;
513 comment = cp;
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000514 for (; *cp && (quoted || (*cp != ' ' &&
515 *cp != '\t')); cp++) {
Damien Miller98c7ad62000-03-09 21:27:49 +1100516 if (*cp == '\\' && cp[1] == '"')
517 cp++; /* Skip both */
518 else if (*cp == '"')
519 quoted = !quoted;
520 }
521 if (!*cp)
522 continue;
523 *cp++ = '\0';
524 }
525 ep = cp;
Ben Lindstrom2941f112000-12-29 16:50:13 +0000526 public = key_new(KEY_RSA1);
527 if (key_read(public, &cp) != 1) {
528 cp = ep;
529 key_free(public);
530 public = key_new(KEY_UNSPEC);
531 if (key_read(public, &cp) != 1) {
532 key_free(public);
533 continue;
534 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100535 }
Ben Lindstrom2941f112000-12-29 16:50:13 +0000536 comment = *cp ? cp : comment;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000537 fp = key_fingerprint(public, fptype, rep);
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000538 printf("%u %s %s\n", key_size(public), fp,
Ben Lindstrom2941f112000-12-29 16:50:13 +0000539 comment ? comment : "no comment");
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000540 xfree(fp);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000541 key_free(public);
Ben Lindstrom2941f112000-12-29 16:50:13 +0000542 invalid = 0;
Damien Miller95def091999-11-25 00:26:21 +1100543 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100544 fclose(f);
Damien Miller95def091999-11-25 00:26:21 +1100545 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100546 if (invalid) {
Damien Millereb5fec62001-11-12 10:52:44 +1100547 printf("%s is not a public key file.\n", identity_file);
Damien Miller98c7ad62000-03-09 21:27:49 +1100548 exit(1);
549 }
Damien Miller95def091999-11-25 00:26:21 +1100550 exit(0);
Damien Miller10f6f6b1999-11-17 17:29:08 +1100551}
552
Damien Miller4b42d7f2005-03-01 21:48:35 +1100553static void
554print_host(FILE *f, char *name, Key *public, int hash)
555{
556 if (hash && (name = host_hash(name, NULL, 0)) == NULL)
557 fatal("hash_host failed");
558 fprintf(f, "%s ", name);
559 if (!key_write(public, f))
560 fatal("key_write failed");
561 fprintf(f, "\n");
562}
563
564static void
565do_known_hosts(struct passwd *pw, const char *name)
566{
567 FILE *in, *out = stdout;
568 Key *public;
569 char *cp, *cp2, *kp, *kp2;
570 char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN];
571 int c, i, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0;
572
573 if (!have_identity) {
574 cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
575 if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
576 sizeof(identity_file))
577 fatal("Specified known hosts path too long");
578 xfree(cp);
579 have_identity = 1;
580 }
581 if ((in = fopen(identity_file, "r")) == NULL)
582 fatal("fopen: %s", strerror(errno));
583
584 /*
585 * Find hosts goes to stdout, hash and deletions happen in-place
586 * A corner case is ssh-keygen -HF foo, which should go to stdout
587 */
588 if (!find_host && (hash_hosts || delete_host)) {
589 if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
590 strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
591 strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
592 strlcat(old, ".old", sizeof(old)) >= sizeof(old))
593 fatal("known_hosts path too long");
594 umask(077);
595 if ((c = mkstemp(tmp)) == -1)
596 fatal("mkstemp: %s", strerror(errno));
597 if ((out = fdopen(c, "w")) == NULL) {
598 c = errno;
599 unlink(tmp);
600 fatal("fdopen: %s", strerror(c));
601 }
602 inplace = 1;
603 }
604
605 while (fgets(line, sizeof(line), in)) {
606 num++;
607 i = strlen(line) - 1;
608 if (line[i] != '\n') {
609 error("line %d too long: %.40s...", num, line);
610 skip = 1;
611 invalid = 1;
612 continue;
613 }
614 if (skip) {
615 skip = 0;
616 continue;
617 }
618 line[i] = '\0';
619
620 /* Skip leading whitespace, empty and comment lines. */
621 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
622 ;
623 if (!*cp || *cp == '\n' || *cp == '#') {
624 if (inplace)
625 fprintf(out, "%s\n", cp);
626 continue;
627 }
628 /* Find the end of the host name portion. */
629 for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++)
630 ;
631 if (*kp == '\0' || *(kp + 1) == '\0') {
632 error("line %d missing key: %.40s...",
633 num, line);
634 invalid = 1;
635 continue;
636 }
637 *kp++ = '\0';
638 kp2 = kp;
639
640 public = key_new(KEY_RSA1);
641 if (key_read(public, &kp) != 1) {
642 kp = kp2;
643 key_free(public);
644 public = key_new(KEY_UNSPEC);
645 if (key_read(public, &kp) != 1) {
646 error("line %d invalid key: %.40s...",
647 num, line);
648 key_free(public);
649 invalid = 1;
650 continue;
651 }
652 }
653
654 if (*cp == HASH_DELIM) {
655 if (find_host || delete_host) {
656 cp2 = host_hash(name, cp, strlen(cp));
657 if (cp2 == NULL) {
658 error("line %d: invalid hashed "
659 "name: %.64s...", num, line);
660 invalid = 1;
661 continue;
662 }
663 c = (strcmp(cp2, cp) == 0);
664 if (find_host && c) {
665 printf("# Host %s found: "
666 "line %d type %s\n", name,
667 num, key_type(public));
668 print_host(out, cp, public, 0);
669 }
670 if (delete_host && !c)
671 print_host(out, cp, public, 0);
672 } else if (hash_hosts)
673 print_host(out, cp, public, 0);
674 } else {
675 if (find_host || delete_host) {
676 c = (match_hostname(name, cp,
677 strlen(cp)) == 1);
678 if (find_host && c) {
679 printf("# Host %s found: "
680 "line %d type %s\n", name,
681 num, key_type(public));
682 print_host(out, cp, public, hash_hosts);
683 }
684 if (delete_host && !c)
685 print_host(out, cp, public, 0);
686 } else if (hash_hosts) {
Darren Tucker47eede72005-03-14 23:08:12 +1100687 for (cp2 = strsep(&cp, ",");
Damien Miller4b42d7f2005-03-01 21:48:35 +1100688 cp2 != NULL && *cp2 != '\0';
Damien Miller89eac802005-03-02 12:33:04 +1100689 cp2 = strsep(&cp, ",")) {
690 if (strcspn(cp2, "*?!") != strlen(cp2))
691 fprintf(stderr, "Warning: "
692 "ignoring host name with "
693 "metacharacters: %.64s\n",
694 cp2);
695 else
696 print_host(out, cp2, public, 1);
697 }
Damien Miller4b42d7f2005-03-01 21:48:35 +1100698 has_unhashed = 1;
699 }
700 }
701 key_free(public);
702 }
703 fclose(in);
704
705 if (invalid) {
706 fprintf(stderr, "%s is not a valid known_host file.\n",
707 identity_file);
708 if (inplace) {
709 fprintf(stderr, "Not replacing existing known_hosts "
Darren Tucker9f438a92005-03-14 23:09:18 +1100710 "file because of errors\n");
Damien Miller4b42d7f2005-03-01 21:48:35 +1100711 fclose(out);
712 unlink(tmp);
713 }
714 exit(1);
715 }
716
717 if (inplace) {
718 fclose(out);
719
720 /* Backup existing file */
721 if (unlink(old) == -1 && errno != ENOENT)
722 fatal("unlink %.100s: %s", old, strerror(errno));
723 if (link(identity_file, old) == -1)
724 fatal("link %.100s to %.100s: %s", identity_file, old,
725 strerror(errno));
726 /* Move new one into place */
727 if (rename(tmp, identity_file) == -1) {
728 error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
729 strerror(errno));
730 unlink(tmp);
731 unlink(old);
732 exit(1);
733 }
734
735 fprintf(stderr, "%s updated.\n", identity_file);
736 fprintf(stderr, "Original contents retained as %s\n", old);
737 if (has_unhashed) {
738 fprintf(stderr, "WARNING: %s contains unhashed "
739 "entries\n", old);
740 fprintf(stderr, "Delete this file to ensure privacy "
741 "of hostnames\n");
742 }
743 }
744
745 exit(0);
746}
747
Damien Miller95def091999-11-25 00:26:21 +1100748/*
749 * Perform changing a passphrase. The argument is the passwd structure
750 * for the current user.
751 */
Ben Lindstrombba81212001-06-25 05:01:22 +0000752static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100753do_change_passphrase(struct passwd *pw)
754{
Damien Miller95def091999-11-25 00:26:21 +1100755 char *comment;
756 char *old_passphrase, *passphrase1, *passphrase2;
757 struct stat st;
Damien Millereba71ba2000-04-29 23:57:08 +1000758 Key *private;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100759
Damien Miller95def091999-11-25 00:26:21 +1100760 if (!have_identity)
761 ask_filename(pw, "Enter file in which the key is");
Damien Miller95def091999-11-25 00:26:21 +1100762 if (stat(identity_file, &st) < 0) {
763 perror(identity_file);
764 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000765 }
Damien Miller95def091999-11-25 00:26:21 +1100766 /* Try to load the file with empty passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000767 private = key_load_private(identity_file, "", &comment);
768 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100769 if (identity_passphrase)
770 old_passphrase = xstrdup(identity_passphrase);
771 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000772 old_passphrase =
773 read_passphrase("Enter old passphrase: ",
774 RP_ALLOW_STDIN);
775 private = key_load_private(identity_file, old_passphrase,
776 &comment);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000777 memset(old_passphrase, 0, strlen(old_passphrase));
778 xfree(old_passphrase);
779 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100780 printf("Bad passphrase.\n");
781 exit(1);
782 }
Damien Miller95def091999-11-25 00:26:21 +1100783 }
784 printf("Key has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000785
Damien Miller95def091999-11-25 00:26:21 +1100786 /* Ask the new passphrase (twice). */
787 if (identity_new_passphrase) {
788 passphrase1 = xstrdup(identity_new_passphrase);
789 passphrase2 = NULL;
790 } else {
791 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +0000792 read_passphrase("Enter new passphrase (empty for no "
793 "passphrase): ", RP_ALLOW_STDIN);
794 passphrase2 = read_passphrase("Enter same passphrase again: ",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100795 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +1100796
797 /* Verify that they are the same. */
798 if (strcmp(passphrase1, passphrase2) != 0) {
799 memset(passphrase1, 0, strlen(passphrase1));
800 memset(passphrase2, 0, strlen(passphrase2));
801 xfree(passphrase1);
802 xfree(passphrase2);
803 printf("Pass phrases do not match. Try again.\n");
804 exit(1);
805 }
806 /* Destroy the other copy. */
807 memset(passphrase2, 0, strlen(passphrase2));
808 xfree(passphrase2);
809 }
810
811 /* Save the file using the new passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000812 if (!key_save_private(private, identity_file, passphrase1, comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +0000813 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100814 memset(passphrase1, 0, strlen(passphrase1));
815 xfree(passphrase1);
Damien Millereba71ba2000-04-29 23:57:08 +1000816 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100817 xfree(comment);
818 exit(1);
819 }
820 /* Destroy the passphrase and the copy of the key in memory. */
821 memset(passphrase1, 0, strlen(passphrase1));
822 xfree(passphrase1);
Damien Millereba71ba2000-04-29 23:57:08 +1000823 key_free(private); /* Destroys contents */
Damien Miller95def091999-11-25 00:26:21 +1100824 xfree(comment);
825
826 printf("Your identification has been saved with the new passphrase.\n");
827 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000828}
829
Damien Miller37876e92003-05-15 10:19:46 +1000830/*
831 * Print the SSHFP RR.
832 */
833static void
Darren Tucker3f9fdc72004-06-22 12:56:01 +1000834do_print_resource_record(struct passwd *pw, char *hname)
Damien Miller37876e92003-05-15 10:19:46 +1000835{
836 Key *public;
837 char *comment = NULL;
838 struct stat st;
839
840 if (!have_identity)
841 ask_filename(pw, "Enter file in which the key is");
842 if (stat(identity_file, &st) < 0) {
843 perror(identity_file);
844 exit(1);
845 }
846 public = key_load_public(identity_file, &comment);
847 if (public != NULL) {
Darren Tucker3f9fdc72004-06-22 12:56:01 +1000848 export_dns_rr(hname, public, stdout, print_generic);
Damien Miller37876e92003-05-15 10:19:46 +1000849 key_free(public);
850 xfree(comment);
851 exit(0);
852 }
853 if (comment)
854 xfree(comment);
855
856 printf("failed to read v2 public key from %s.\n", identity_file);
857 exit(1);
858}
Damien Miller37876e92003-05-15 10:19:46 +1000859
Damien Miller95def091999-11-25 00:26:21 +1100860/*
861 * Change the comment of a private key file.
862 */
Ben Lindstrombba81212001-06-25 05:01:22 +0000863static void
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000864do_change_comment(struct passwd *pw)
865{
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000866 char new_comment[1024], *comment, *passphrase;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000867 Key *private;
868 Key *public;
Damien Miller95def091999-11-25 00:26:21 +1100869 struct stat st;
870 FILE *f;
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000871 int fd;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000872
Damien Miller95def091999-11-25 00:26:21 +1100873 if (!have_identity)
874 ask_filename(pw, "Enter file in which the key is");
Damien Miller95def091999-11-25 00:26:21 +1100875 if (stat(identity_file, &st) < 0) {
876 perror(identity_file);
877 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000878 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000879 private = key_load_private(identity_file, "", &comment);
880 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100881 if (identity_passphrase)
882 passphrase = xstrdup(identity_passphrase);
883 else if (identity_new_passphrase)
884 passphrase = xstrdup(identity_new_passphrase);
885 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000886 passphrase = read_passphrase("Enter passphrase: ",
887 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +1100888 /* Try to load using the passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000889 private = key_load_private(identity_file, passphrase, &comment);
890 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100891 memset(passphrase, 0, strlen(passphrase));
892 xfree(passphrase);
893 printf("Bad passphrase.\n");
894 exit(1);
895 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000896 } else {
897 passphrase = xstrdup("");
Damien Miller95def091999-11-25 00:26:21 +1100898 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000899 if (private->type != KEY_RSA1) {
900 fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
901 key_free(private);
902 exit(1);
Damien Miller9f0f5c62001-12-21 14:45:46 +1100903 }
Damien Miller95def091999-11-25 00:26:21 +1100904 printf("Key now has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000905
Damien Miller95def091999-11-25 00:26:21 +1100906 if (identity_comment) {
907 strlcpy(new_comment, identity_comment, sizeof(new_comment));
908 } else {
909 printf("Enter new comment: ");
910 fflush(stdout);
911 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
912 memset(passphrase, 0, strlen(passphrase));
Damien Millereba71ba2000-04-29 23:57:08 +1000913 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100914 exit(1);
915 }
Damien Miller95def091999-11-25 00:26:21 +1100916 if (strchr(new_comment, '\n'))
917 *strchr(new_comment, '\n') = 0;
918 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000919
Damien Miller95def091999-11-25 00:26:21 +1100920 /* Save the file using the new passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000921 if (!key_save_private(private, identity_file, passphrase, new_comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +0000922 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100923 memset(passphrase, 0, strlen(passphrase));
924 xfree(passphrase);
Damien Millereba71ba2000-04-29 23:57:08 +1000925 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100926 xfree(comment);
927 exit(1);
928 }
Damien Miller95def091999-11-25 00:26:21 +1100929 memset(passphrase, 0, strlen(passphrase));
930 xfree(passphrase);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000931 public = key_from_private(private);
Damien Millereba71ba2000-04-29 23:57:08 +1000932 key_free(private);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000933
Damien Miller95def091999-11-25 00:26:21 +1100934 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000935 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
936 if (fd == -1) {
Damien Miller95def091999-11-25 00:26:21 +1100937 printf("Could not save your public key in %s\n", identity_file);
938 exit(1);
939 }
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000940 f = fdopen(fd, "w");
941 if (f == NULL) {
942 printf("fdopen %s failed", identity_file);
943 exit(1);
944 }
Damien Millereba71ba2000-04-29 23:57:08 +1000945 if (!key_write(public, f))
946 fprintf(stderr, "write key failed");
947 key_free(public);
948 fprintf(f, " %s\n", new_comment);
Damien Miller95def091999-11-25 00:26:21 +1100949 fclose(f);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000950
Damien Miller95def091999-11-25 00:26:21 +1100951 xfree(comment);
952
953 printf("The comment in your key file has been changed.\n");
954 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000955}
956
Ben Lindstrombba81212001-06-25 05:01:22 +0000957static void
Damien Miller431f66b1999-11-21 18:31:57 +1100958usage(void)
959{
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000960 fprintf(stderr, "Usage: %s [options]\n", __progname);
961 fprintf(stderr, "Options:\n");
Damien Miller9278ffa2005-05-26 11:59:06 +1000962 fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n");
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000963 fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
Damien Miller9278ffa2005-05-26 11:59:06 +1000964 fprintf(stderr, " -b bits Number of bits in the key to create.\n");
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000965 fprintf(stderr, " -C comment Provide new comment.\n");
Damien Miller9278ffa2005-05-26 11:59:06 +1000966 fprintf(stderr, " -c Change comment in private and public key files.\n");
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000967#ifdef SMARTCARD
968 fprintf(stderr, " -D reader Download public key from smartcard.\n");
Damien Miller9278ffa2005-05-26 11:59:06 +1000969#endif /* SMARTCARD */
970 fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n");
971 fprintf(stderr, " -F hostname Find hostname in known hosts file.\n");
972 fprintf(stderr, " -f filename Filename of the key file.\n");
973 fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n");
974 fprintf(stderr, " -g Use generic DNS resource record format.\n");
975 fprintf(stderr, " -H Hash names in known_hosts file.\n");
976 fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n");
977 fprintf(stderr, " -l Show fingerprint of key file.\n");
978 fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n");
979 fprintf(stderr, " -N phrase Provide new passphrase.\n");
980 fprintf(stderr, " -P phrase Provide old passphrase.\n");
981 fprintf(stderr, " -p Change passphrase of private key file.\n");
982 fprintf(stderr, " -q Quiet.\n");
983 fprintf(stderr, " -R hostname Remove host from known_hosts file.\n");
984 fprintf(stderr, " -r hostname Print DNS resource record.\n");
985 fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n");
986 fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n");
987 fprintf(stderr, " -t type Specify type of key to create.\n");
988#ifdef SMARTCARD
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000989 fprintf(stderr, " -U reader Upload private key to smartcard.\n");
990#endif /* SMARTCARD */
Damien Miller9278ffa2005-05-26 11:59:06 +1000991 fprintf(stderr, " -v Verbose.\n");
992 fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n");
993 fprintf(stderr, " -y Read private key file and print public key.\n");
Darren Tucker019cefe2003-08-02 22:40:07 +1000994
Damien Miller95def091999-11-25 00:26:21 +1100995 exit(1);
Damien Miller431f66b1999-11-21 18:31:57 +1100996}
997
Damien Miller95def091999-11-25 00:26:21 +1100998/*
999 * Main program for key management.
1000 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001001int
1002main(int ac, char **av)
1003{
Damien Millera41c8b12002-01-22 23:05:08 +11001004 char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
Tim Rice2e0e38e2003-09-08 16:11:33 -07001005 char out_file[MAXPATHLEN], *reader_id = NULL;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001006 char *rr_hostname = NULL;
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001007 Key *private, *public;
Damien Miller95def091999-11-25 00:26:21 +11001008 struct passwd *pw;
Damien Miller95def091999-11-25 00:26:21 +11001009 struct stat st;
Damien Millerb089fb52005-05-26 12:16:18 +10001010 int opt, type, fd, download = 0;
Darren Tucker2db8ae62005-06-01 23:02:25 +10001011 u_int32_t memory = 0, generator_wanted = 0, trials = 100;
Darren Tucker019cefe2003-08-02 22:40:07 +10001012 int do_gen_candidates = 0, do_screen_candidates = 0;
Darren Tucker06930c72003-12-31 11:34:51 +11001013 int log_level = SYSLOG_LEVEL_INFO;
Darren Tucker019cefe2003-08-02 22:40:07 +10001014 BIGNUM *start = NULL;
Damien Miller95def091999-11-25 00:26:21 +11001015 FILE *f;
Damien Miller02e754f2005-05-26 12:19:39 +10001016 const char *errstr;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001017
Damien Miller95def091999-11-25 00:26:21 +11001018 extern int optind;
1019 extern char *optarg;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001020
Damien Miller59d3d5b2003-08-22 09:34:41 +10001021 __progname = ssh_get_progname(av[0]);
Damien Millerf9b625c2000-07-09 22:42:32 +10001022
Damien Millerd3a18572000-06-07 19:55:44 +10001023 SSLeay_add_all_algorithms();
Darren Tucker019cefe2003-08-02 22:40:07 +10001024 log_init(av[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
1025
Kevin Steves3a881912002-07-20 19:05:40 +00001026 init_rng();
1027 seed_rng();
Damien Millereba71ba2000-04-29 23:57:08 +10001028
Damien Miller5428f641999-11-25 11:54:57 +11001029 /* we need this for the home * directory. */
Damien Miller95def091999-11-25 00:26:21 +11001030 pw = getpwuid(getuid());
1031 if (!pw) {
1032 printf("You don't exist, go away!\n");
1033 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001034 }
Damien Millereba71ba2000-04-29 23:57:08 +10001035 if (gethostname(hostname, sizeof(hostname)) < 0) {
1036 perror("gethostname");
1037 exit(1);
1038 }
Damien Miller5428f641999-11-25 11:54:57 +11001039
Darren Tucker019cefe2003-08-02 22:40:07 +10001040 while ((opt = getopt(ac, av,
Damien Miller4b42d7f2005-03-01 21:48:35 +11001041 "degiqpclBHvxXyF:b:f:t:U:D:P:N:C:r:g:R:T:G:M:S:a:W:")) != -1) {
Damien Miller95def091999-11-25 00:26:21 +11001042 switch (opt) {
1043 case 'b':
Damien Millerb089fb52005-05-26 12:16:18 +10001044 bits = strtonum(optarg, 512, 32768, &errstr);
Damien Miller02e754f2005-05-26 12:19:39 +10001045 if (errstr)
1046 fatal("Bits has bad value %s (%s)",
1047 optarg, errstr);
Damien Miller95def091999-11-25 00:26:21 +11001048 break;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001049 case 'F':
1050 find_host = 1;
1051 rr_hostname = optarg;
1052 break;
1053 case 'H':
1054 hash_hosts = 1;
1055 break;
1056 case 'R':
1057 delete_host = 1;
1058 rr_hostname = optarg;
1059 break;
Damien Miller95def091999-11-25 00:26:21 +11001060 case 'l':
1061 print_fingerprint = 1;
1062 break;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00001063 case 'B':
1064 print_bubblebabble = 1;
1065 break;
Damien Miller95def091999-11-25 00:26:21 +11001066 case 'p':
1067 change_passphrase = 1;
1068 break;
Damien Miller95def091999-11-25 00:26:21 +11001069 case 'c':
1070 change_comment = 1;
1071 break;
Damien Miller95def091999-11-25 00:26:21 +11001072 case 'f':
Damien Millerb089fb52005-05-26 12:16:18 +10001073 if (strlcpy(identity_file, optarg, sizeof(identity_file)) >=
1074 sizeof(identity_file))
1075 fatal("Identity filename too long");
Damien Miller95def091999-11-25 00:26:21 +11001076 have_identity = 1;
1077 break;
Damien Miller37876e92003-05-15 10:19:46 +10001078 case 'g':
1079 print_generic = 1;
1080 break;
Damien Miller95def091999-11-25 00:26:21 +11001081 case 'P':
1082 identity_passphrase = optarg;
1083 break;
Damien Miller95def091999-11-25 00:26:21 +11001084 case 'N':
1085 identity_new_passphrase = optarg;
1086 break;
Damien Miller95def091999-11-25 00:26:21 +11001087 case 'C':
1088 identity_comment = optarg;
1089 break;
Damien Miller95def091999-11-25 00:26:21 +11001090 case 'q':
1091 quiet = 1;
1092 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00001093 case 'e':
Damien Millereba71ba2000-04-29 23:57:08 +10001094 case 'x':
Ben Lindstrom5a707822001-04-22 17:15:46 +00001095 /* export key */
Damien Millereba71ba2000-04-29 23:57:08 +10001096 convert_to_ssh2 = 1;
1097 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00001098 case 'i':
Damien Millereba71ba2000-04-29 23:57:08 +10001099 case 'X':
Ben Lindstrom5a707822001-04-22 17:15:46 +00001100 /* import key */
Damien Millereba71ba2000-04-29 23:57:08 +10001101 convert_from_ssh2 = 1;
1102 break;
Damien Millereba71ba2000-04-29 23:57:08 +10001103 case 'y':
1104 print_public = 1;
1105 break;
Damien Millereba71ba2000-04-29 23:57:08 +10001106 case 'd':
Damien Miller0bc1bd82000-11-13 22:57:25 +11001107 key_type_name = "dsa";
Damien Millereba71ba2000-04-29 23:57:08 +10001108 break;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001109 case 't':
1110 key_type_name = optarg;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001111 break;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00001112 case 'D':
1113 download = 1;
Ben Lindstromf19578c2001-08-06 21:46:54 +00001114 case 'U':
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00001115 reader_id = optarg;
Ben Lindstromcd392282001-07-04 03:44:03 +00001116 break;
Darren Tucker06930c72003-12-31 11:34:51 +11001117 case 'v':
1118 if (log_level == SYSLOG_LEVEL_INFO)
1119 log_level = SYSLOG_LEVEL_DEBUG1;
1120 else {
Darren Tuckerfc959702004-07-17 16:12:08 +10001121 if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
Darren Tucker06930c72003-12-31 11:34:51 +11001122 log_level < SYSLOG_LEVEL_DEBUG3)
1123 log_level++;
1124 }
1125 break;
Damien Miller37876e92003-05-15 10:19:46 +10001126 case 'r':
Damien Miller4b42d7f2005-03-01 21:48:35 +11001127 rr_hostname = optarg;
Damien Miller37876e92003-05-15 10:19:46 +10001128 break;
Darren Tucker019cefe2003-08-02 22:40:07 +10001129 case 'W':
Damien Millerb089fb52005-05-26 12:16:18 +10001130 generator_wanted = strtonum(optarg, 1, UINT_MAX, &errstr);
1131 if (errstr)
1132 fatal("Desired generator has bad value: %s (%s)",
1133 optarg, errstr);
Darren Tucker019cefe2003-08-02 22:40:07 +10001134 break;
1135 case 'a':
Damien Millerb089fb52005-05-26 12:16:18 +10001136 trials = strtonum(optarg, 1, UINT_MAX, &errstr);
1137 if (errstr)
1138 fatal("Invalid number of trials: %s (%s)",
1139 optarg, errstr);
Darren Tucker019cefe2003-08-02 22:40:07 +10001140 break;
1141 case 'M':
Damien Millerb089fb52005-05-26 12:16:18 +10001142 memory = strtonum(optarg, 1, UINT_MAX, &errstr);
1143 if (errstr) {
1144 fatal("Memory limit is %s: %s", errstr, optarg);
1145 }
Darren Tucker019cefe2003-08-02 22:40:07 +10001146 break;
1147 case 'G':
1148 do_gen_candidates = 1;
Damien Millerb089fb52005-05-26 12:16:18 +10001149 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1150 sizeof(out_file))
1151 fatal("Output filename too long");
Darren Tucker019cefe2003-08-02 22:40:07 +10001152 break;
1153 case 'T':
1154 do_screen_candidates = 1;
Damien Millerb089fb52005-05-26 12:16:18 +10001155 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
1156 sizeof(out_file))
1157 fatal("Output filename too long");
Darren Tucker019cefe2003-08-02 22:40:07 +10001158 break;
1159 case 'S':
1160 /* XXX - also compare length against bits */
1161 if (BN_hex2bn(&start, optarg) == 0)
1162 fatal("Invalid start point.");
1163 break;
Damien Miller95def091999-11-25 00:26:21 +11001164 case '?':
1165 default:
1166 usage();
1167 }
1168 }
Darren Tucker06930c72003-12-31 11:34:51 +11001169
1170 /* reinit */
1171 log_init(av[0], log_level, SYSLOG_FACILITY_USER, 1);
1172
Damien Miller95def091999-11-25 00:26:21 +11001173 if (optind < ac) {
1174 printf("Too many arguments.\n");
1175 usage();
1176 }
1177 if (change_passphrase && change_comment) {
1178 printf("Can only have one of -p and -c.\n");
1179 usage();
1180 }
Damien Miller4b42d7f2005-03-01 21:48:35 +11001181 if (delete_host || hash_hosts || find_host)
1182 do_known_hosts(pw, rr_hostname);
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00001183 if (print_fingerprint || print_bubblebabble)
Damien Miller95def091999-11-25 00:26:21 +11001184 do_fingerprint(pw);
Damien Miller95def091999-11-25 00:26:21 +11001185 if (change_passphrase)
1186 do_change_passphrase(pw);
Damien Miller4a10d2e2002-03-11 22:53:29 +11001187 if (change_comment)
1188 do_change_comment(pw);
Kevin Steves3a881912002-07-20 19:05:40 +00001189 if (convert_to_ssh2)
1190 do_convert_to_ssh2(pw);
1191 if (convert_from_ssh2)
1192 do_convert_from_ssh2(pw);
Damien Millereba71ba2000-04-29 23:57:08 +10001193 if (print_public)
1194 do_print_public(pw);
Damien Miller4b42d7f2005-03-01 21:48:35 +11001195 if (rr_hostname != NULL) {
1196 do_print_resource_record(pw, rr_hostname);
Damien Miller37876e92003-05-15 10:19:46 +10001197 }
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00001198 if (reader_id != NULL) {
Ben Lindstrom6818bfb2001-08-06 21:40:04 +00001199#ifdef SMARTCARD
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00001200 if (download)
1201 do_download(pw, reader_id);
1202 else
1203 do_upload(pw, reader_id);
Ben Lindstromffce1472001-08-06 21:57:31 +00001204#else /* SMARTCARD */
Ben Lindstrom6818bfb2001-08-06 21:40:04 +00001205 fatal("no support for smartcards.");
Ben Lindstromffce1472001-08-06 21:57:31 +00001206#endif /* SMARTCARD */
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00001207 }
Damien Miller95def091999-11-25 00:26:21 +11001208
Darren Tucker019cefe2003-08-02 22:40:07 +10001209 if (do_gen_candidates) {
1210 FILE *out = fopen(out_file, "w");
Damien Miller787b2ec2003-11-21 23:56:47 +11001211
Darren Tucker019cefe2003-08-02 22:40:07 +10001212 if (out == NULL) {
1213 error("Couldn't open modulus candidate file \"%s\": %s",
1214 out_file, strerror(errno));
1215 return (1);
1216 }
1217 if (gen_candidates(out, memory, bits, start) != 0)
1218 fatal("modulus candidate generation failed\n");
1219
1220 return (0);
1221 }
1222
1223 if (do_screen_candidates) {
1224 FILE *in;
1225 FILE *out = fopen(out_file, "w");
1226
1227 if (have_identity && strcmp(identity_file, "-") != 0) {
1228 if ((in = fopen(identity_file, "r")) == NULL) {
1229 fatal("Couldn't open modulus candidate "
Damien Millera8e06ce2003-11-21 23:48:55 +11001230 "file \"%s\": %s", identity_file,
Darren Tucker019cefe2003-08-02 22:40:07 +10001231 strerror(errno));
1232 }
1233 } else
1234 in = stdin;
1235
1236 if (out == NULL) {
1237 fatal("Couldn't open moduli file \"%s\": %s",
1238 out_file, strerror(errno));
1239 }
1240 if (prime_test(in, out, trials, generator_wanted) != 0)
1241 fatal("modulus screening failed\n");
Darren Tuckerf4220e62003-08-21 16:44:07 +10001242 return (0);
Darren Tucker019cefe2003-08-02 22:40:07 +10001243 }
1244
Damien Miller95def091999-11-25 00:26:21 +11001245 arc4random_stir();
1246
Damien Miller154dda72002-01-22 23:08:16 +11001247 if (key_type_name == NULL) {
1248 printf("You must specify a key type (-t).\n");
1249 usage();
1250 }
Damien Millere39cacc2000-11-29 12:18:44 +11001251 type = key_type_from_name(key_type_name);
1252 if (type == KEY_UNSPEC) {
1253 fprintf(stderr, "unknown key type %s\n", key_type_name);
1254 exit(1);
Damien Millereba71ba2000-04-29 23:57:08 +10001255 }
Damien Miller0bc1bd82000-11-13 22:57:25 +11001256 if (!quiet)
Damien Millere39cacc2000-11-29 12:18:44 +11001257 printf("Generating public/private %s key pair.\n", key_type_name);
Damien Miller0bc1bd82000-11-13 22:57:25 +11001258 private = key_generate(type, bits);
1259 if (private == NULL) {
1260 fprintf(stderr, "key_generate failed");
1261 exit(1);
1262 }
1263 public = key_from_private(private);
Damien Miller95def091999-11-25 00:26:21 +11001264
1265 if (!have_identity)
1266 ask_filename(pw, "Enter file in which to save the key");
1267
1268 /* Create ~/.ssh directory if it doesn\'t already exist. */
Ben Lindstrom226cfa02001-01-22 05:34:40 +00001269 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR);
Damien Miller95def091999-11-25 00:26:21 +11001270 if (strstr(identity_file, dotsshdir) != NULL &&
1271 stat(dotsshdir, &st) < 0) {
Damien Millerbe484b52000-07-15 14:14:16 +10001272 if (mkdir(dotsshdir, 0700) < 0)
Damien Miller95def091999-11-25 00:26:21 +11001273 error("Could not create directory '%s'.", dotsshdir);
1274 else if (!quiet)
1275 printf("Created directory '%s'.\n", dotsshdir);
1276 }
1277 /* If the file already exists, ask the user to confirm. */
1278 if (stat(identity_file, &st) >= 0) {
1279 char yesno[3];
1280 printf("%s already exists.\n", identity_file);
1281 printf("Overwrite (y/n)? ");
1282 fflush(stdout);
1283 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
1284 exit(1);
1285 if (yesno[0] != 'y' && yesno[0] != 'Y')
1286 exit(1);
1287 }
1288 /* Ask for a passphrase (twice). */
1289 if (identity_passphrase)
1290 passphrase1 = xstrdup(identity_passphrase);
1291 else if (identity_new_passphrase)
1292 passphrase1 = xstrdup(identity_new_passphrase);
1293 else {
1294passphrase_again:
1295 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +00001296 read_passphrase("Enter passphrase (empty for no "
1297 "passphrase): ", RP_ALLOW_STDIN);
1298 passphrase2 = read_passphrase("Enter same passphrase again: ",
1299 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11001300 if (strcmp(passphrase1, passphrase2) != 0) {
Ben Lindstrom949974b2001-06-25 05:20:31 +00001301 /*
1302 * The passphrases do not match. Clear them and
1303 * retry.
1304 */
Damien Miller95def091999-11-25 00:26:21 +11001305 memset(passphrase1, 0, strlen(passphrase1));
1306 memset(passphrase2, 0, strlen(passphrase2));
1307 xfree(passphrase1);
1308 xfree(passphrase2);
1309 printf("Passphrases do not match. Try again.\n");
1310 goto passphrase_again;
1311 }
1312 /* Clear the other copy of the passphrase. */
1313 memset(passphrase2, 0, strlen(passphrase2));
1314 xfree(passphrase2);
1315 }
1316
Damien Miller95def091999-11-25 00:26:21 +11001317 if (identity_comment) {
1318 strlcpy(comment, identity_comment, sizeof(comment));
1319 } else {
Damien Miller4af51302000-04-16 11:18:38 +10001320 /* Create default commend field for the passphrase. */
Damien Miller95def091999-11-25 00:26:21 +11001321 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
1322 }
1323
1324 /* Save the key with the given passphrase and comment. */
Ben Lindstromd0fca422001-03-26 13:44:06 +00001325 if (!key_save_private(private, identity_file, passphrase1, comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +00001326 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +11001327 memset(passphrase1, 0, strlen(passphrase1));
1328 xfree(passphrase1);
1329 exit(1);
1330 }
1331 /* Clear the passphrase. */
1332 memset(passphrase1, 0, strlen(passphrase1));
1333 xfree(passphrase1);
1334
1335 /* Clear the private key and the random number generator. */
Damien Miller0bc1bd82000-11-13 22:57:25 +11001336 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +11001337 arc4random_stir();
1338
1339 if (!quiet)
1340 printf("Your identification has been saved in %s.\n", identity_file);
1341
Damien Miller95def091999-11-25 00:26:21 +11001342 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001343 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
1344 if (fd == -1) {
Damien Miller95def091999-11-25 00:26:21 +11001345 printf("Could not save your public key in %s\n", identity_file);
1346 exit(1);
1347 }
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001348 f = fdopen(fd, "w");
1349 if (f == NULL) {
1350 printf("fdopen %s failed", identity_file);
1351 exit(1);
1352 }
Damien Millereba71ba2000-04-29 23:57:08 +10001353 if (!key_write(public, f))
1354 fprintf(stderr, "write key failed");
1355 fprintf(f, " %s\n", comment);
Damien Miller95def091999-11-25 00:26:21 +11001356 fclose(f);
1357
1358 if (!quiet) {
Ben Lindstromcfccef92001-03-13 04:57:58 +00001359 char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
Damien Millereba71ba2000-04-29 23:57:08 +10001360 printf("Your public key has been saved in %s.\n",
1361 identity_file);
Damien Miller95def091999-11-25 00:26:21 +11001362 printf("The key fingerprint is:\n");
Ben Lindstromcfccef92001-03-13 04:57:58 +00001363 printf("%s %s\n", fp, comment);
1364 xfree(fp);
Damien Miller95def091999-11-25 00:26:21 +11001365 }
Damien Millereba71ba2000-04-29 23:57:08 +10001366
1367 key_free(public);
Damien Miller95def091999-11-25 00:26:21 +11001368 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001369}