blob: 6a872bcfd2085f9041c2944417a6b1546c0a33fd [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"
Ben Lindstrome7ee7fe2002-12-23 02:11:02 +000015RCSID("$OpenBSD: ssh-keygen.c,v 1.102 2002/11/26 00:45:03 wcobb 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"
29#include "readpass.h"
Damien Miller874d77b2000-10-14 16:23:11 +110030
Ben Lindstrom8282d6a2001-08-06 21:44:05 +000031#ifdef SMARTCARD
Ben Lindstrom8282d6a2001-08-06 21:44:05 +000032#include "scard.h"
Ben Lindstrombcc18082001-08-06 21:59:25 +000033#endif
Ben Lindstromcd392282001-07-04 03:44:03 +000034
Damien Millereba71ba2000-04-29 23:57:08 +100035/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100036int bits = 1024;
37
Damien Miller5428f641999-11-25 11:54:57 +110038/*
39 * Flag indicating that we just want to change the passphrase. This can be
40 * set on the command line.
41 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100042int change_passphrase = 0;
43
Damien Miller5428f641999-11-25 11:54:57 +110044/*
45 * Flag indicating that we just want to change the comment. This can be set
46 * on the command line.
47 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100048int change_comment = 0;
49
50int quiet = 0;
51
Damien Miller10f6f6b1999-11-17 17:29:08 +110052/* Flag indicating that we just want to see the key fingerprint */
53int print_fingerprint = 0;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +000054int print_bubblebabble = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +110055
Damien Miller431f66b1999-11-21 18:31:57 +110056/* The identity file name, given on the command line or entered by the user. */
57char identity_file[1024];
58int have_identity = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +100059
60/* This is set to the passphrase if given on the command line. */
61char *identity_passphrase = NULL;
62
63/* This is set to the new passphrase if given on the command line. */
64char *identity_new_passphrase = NULL;
65
66/* This is set to the new comment if given on the command line. */
67char *identity_comment = NULL;
68
Damien Millereba71ba2000-04-29 23:57:08 +100069/* Dump public key file in format used by real and the original SSH 2 */
70int convert_to_ssh2 = 0;
71int convert_from_ssh2 = 0;
72int print_public = 0;
Damien Miller0bc1bd82000-11-13 22:57:25 +110073
Damien Millera41c8b12002-01-22 23:05:08 +110074char *key_type_name = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +100075
Damien Miller431f66b1999-11-21 18:31:57 +110076/* argv0 */
Damien Miller95def091999-11-25 00:26:21 +110077#ifdef HAVE___PROGNAME
Damien Miller431f66b1999-11-21 18:31:57 +110078extern char *__progname;
Ben Lindstrom49a79c02000-11-17 03:47:20 +000079#else
80char *__progname;
81#endif
Damien Millerd4a8b7e1999-10-27 13:42:43 +100082
Damien Millereba71ba2000-04-29 23:57:08 +100083char hostname[MAXHOSTNAMELEN];
84
Ben Lindstrombba81212001-06-25 05:01:22 +000085static void
Damien Miller431f66b1999-11-21 18:31:57 +110086ask_filename(struct passwd *pw, const char *prompt)
Damien Millerd4a8b7e1999-10-27 13:42:43 +100087{
Damien Miller95def091999-11-25 00:26:21 +110088 char buf[1024];
Damien Millere39cacc2000-11-29 12:18:44 +110089 char *name = NULL;
90
Damien Miller993dd552002-02-19 15:22:47 +110091 if (key_type_name == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +000092 name = _PATH_SSH_CLIENT_ID_RSA;
Damien Miller993dd552002-02-19 15:22:47 +110093 else
94 switch (key_type_from_name(key_type_name)) {
95 case KEY_RSA1:
96 name = _PATH_SSH_CLIENT_IDENTITY;
97 break;
98 case KEY_DSA:
99 name = _PATH_SSH_CLIENT_ID_DSA;
100 break;
101 case KEY_RSA:
102 name = _PATH_SSH_CLIENT_ID_RSA;
103 break;
104 default:
105 fprintf(stderr, "bad key type");
106 exit(1);
107 break;
108 }
109
Damien Millere39cacc2000-11-29 12:18:44 +1100110 snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name);
Ben Lindstrom3deda8b2000-12-22 20:27:43 +0000111 fprintf(stderr, "%s (%s): ", prompt, identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100112 if (fgets(buf, sizeof(buf), stdin) == NULL)
113 exit(1);
114 if (strchr(buf, '\n'))
115 *strchr(buf, '\n') = 0;
116 if (strcmp(buf, "") != 0)
117 strlcpy(identity_file, buf, sizeof(identity_file));
118 have_identity = 1;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100119}
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000120
Ben Lindstrombba81212001-06-25 05:01:22 +0000121static Key *
Ben Lindstromd78ae762001-06-05 20:35:09 +0000122load_identity(char *filename)
Damien Millereba71ba2000-04-29 23:57:08 +1000123{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000124 char *pass;
125 Key *prv;
126
Ben Lindstroma3700052001-04-05 23:26:32 +0000127 prv = key_load_private(filename, "", NULL);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000128 if (prv == NULL) {
Ben Lindstromd78ae762001-06-05 20:35:09 +0000129 if (identity_passphrase)
130 pass = xstrdup(identity_passphrase);
131 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000132 pass = read_passphrase("Enter passphrase: ",
133 RP_ALLOW_STDIN);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000134 prv = key_load_private(filename, pass, NULL);
Damien Millereba71ba2000-04-29 23:57:08 +1000135 memset(pass, 0, strlen(pass));
136 xfree(pass);
137 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000138 return prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000139}
140
Damien Miller874d77b2000-10-14 16:23:11 +1100141#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
Ben Lindstromcb72e4f2002-06-21 00:41:51 +0000142#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
Damien Miller874d77b2000-10-14 16:23:11 +1100143#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
Kevin Stevesef4eea92001-02-05 12:42:17 +0000144#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
Damien Millereba71ba2000-04-29 23:57:08 +1000145
Ben Lindstrombba81212001-06-25 05:01:22 +0000146static void
Damien Millereba71ba2000-04-29 23:57:08 +1000147do_convert_to_ssh2(struct passwd *pw)
148{
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000149 Key *k;
Ben Lindstromc58ab022002-02-26 18:15:09 +0000150 u_int len;
Ben Lindstrom46c16222000-12-22 01:43:59 +0000151 u_char *blob;
Damien Millereba71ba2000-04-29 23:57:08 +1000152 struct stat st;
153
154 if (!have_identity)
155 ask_filename(pw, "Enter file in which the key is");
156 if (stat(identity_file, &st) < 0) {
157 perror(identity_file);
158 exit(1);
159 }
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000160 if ((k = key_load_public(identity_file, NULL)) == NULL) {
Ben Lindstromd78ae762001-06-05 20:35:09 +0000161 if ((k = load_identity(identity_file)) == NULL) {
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000162 fprintf(stderr, "load failed\n");
163 exit(1);
164 }
Damien Millereba71ba2000-04-29 23:57:08 +1000165 }
Ben Lindstrom99a30f12001-09-18 05:49:14 +0000166 if (key_to_blob(k, &blob, &len) <= 0) {
167 fprintf(stderr, "key_to_blob failed\n");
168 exit(1);
169 }
Damien Miller874d77b2000-10-14 16:23:11 +1100170 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
Damien Millereba71ba2000-04-29 23:57:08 +1000171 fprintf(stdout,
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000172 "Comment: \"%u-bit %s, converted from OpenSSH by %s@%s\"\n",
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000173 key_size(k), key_type(k),
Damien Millereba71ba2000-04-29 23:57:08 +1000174 pw->pw_name, hostname);
175 dump_base64(stdout, blob, len);
Damien Miller874d77b2000-10-14 16:23:11 +1100176 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
Ben Lindstrom46c264f2001-04-24 16:56:58 +0000177 key_free(k);
Damien Millereba71ba2000-04-29 23:57:08 +1000178 xfree(blob);
179 exit(0);
180}
181
Ben Lindstrombba81212001-06-25 05:01:22 +0000182static void
Damien Miller874d77b2000-10-14 16:23:11 +1100183buffer_get_bignum_bits(Buffer *b, BIGNUM *value)
184{
185 int bits = buffer_get_int(b);
186 int bytes = (bits + 7) / 8;
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000187
Damien Miller874d77b2000-10-14 16:23:11 +1100188 if (buffer_len(b) < bytes)
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000189 fatal("buffer_get_bignum_bits: input buffer too small: "
190 "need %d have %d", bytes, buffer_len(b));
Damien Miller708d21c2002-01-22 23:18:15 +1100191 BN_bin2bn(buffer_ptr(b), bytes, value);
Damien Miller874d77b2000-10-14 16:23:11 +1100192 buffer_consume(b, bytes);
193}
194
Ben Lindstrombba81212001-06-25 05:01:22 +0000195static Key *
Ben Lindstrom90fd8142002-02-26 18:09:42 +0000196do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
Damien Miller874d77b2000-10-14 16:23:11 +1100197{
198 Buffer b;
Damien Miller874d77b2000-10-14 16:23:11 +1100199 Key *key = NULL;
Damien Miller874d77b2000-10-14 16:23:11 +1100200 char *type, *cipher;
Ben Lindstrom511d69e2001-07-04 05:05:27 +0000201 u_char *sig, data[] = "abcde12345";
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000202 int magic, rlen, ktype, i1, i2, i3, i4;
203 u_int slen;
204 u_long e;
Damien Miller874d77b2000-10-14 16:23:11 +1100205
206 buffer_init(&b);
207 buffer_append(&b, blob, blen);
208
209 magic = buffer_get_int(&b);
210 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
211 error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC);
212 buffer_free(&b);
213 return NULL;
214 }
Ben Lindstrom34f91882001-06-25 04:47:54 +0000215 i1 = buffer_get_int(&b);
Damien Miller874d77b2000-10-14 16:23:11 +1100216 type = buffer_get_string(&b, NULL);
217 cipher = buffer_get_string(&b, NULL);
Ben Lindstrom34f91882001-06-25 04:47:54 +0000218 i2 = buffer_get_int(&b);
219 i3 = buffer_get_int(&b);
220 i4 = buffer_get_int(&b);
221 debug("ignore (%d %d %d %d)", i1,i2,i3,i4);
Damien Miller874d77b2000-10-14 16:23:11 +1100222 if (strcmp(cipher, "none") != 0) {
223 error("unsupported cipher %s", cipher);
224 xfree(cipher);
225 buffer_free(&b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000226 xfree(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100227 return NULL;
228 }
229 xfree(cipher);
230
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000231 if (strstr(type, "dsa")) {
232 ktype = KEY_DSA;
233 } else if (strstr(type, "rsa")) {
234 ktype = KEY_RSA;
235 } else {
236 xfree(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100237 return NULL;
238 }
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000239 key = key_new_private(ktype);
240 xfree(type);
241
242 switch (key->type) {
243 case KEY_DSA:
244 buffer_get_bignum_bits(&b, key->dsa->p);
245 buffer_get_bignum_bits(&b, key->dsa->g);
246 buffer_get_bignum_bits(&b, key->dsa->q);
247 buffer_get_bignum_bits(&b, key->dsa->pub_key);
248 buffer_get_bignum_bits(&b, key->dsa->priv_key);
249 break;
250 case KEY_RSA:
Ben Lindstrom34f91882001-06-25 04:47:54 +0000251 e = buffer_get_char(&b);
252 debug("e %lx", e);
253 if (e < 30) {
254 e <<= 8;
255 e += buffer_get_char(&b);
256 debug("e %lx", e);
257 e <<= 8;
258 e += buffer_get_char(&b);
259 debug("e %lx", e);
260 }
261 if (!BN_set_word(key->rsa->e, e)) {
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000262 buffer_free(&b);
263 key_free(key);
264 return NULL;
265 }
266 buffer_get_bignum_bits(&b, key->rsa->d);
267 buffer_get_bignum_bits(&b, key->rsa->n);
268 buffer_get_bignum_bits(&b, key->rsa->iqmp);
269 buffer_get_bignum_bits(&b, key->rsa->q);
270 buffer_get_bignum_bits(&b, key->rsa->p);
Ben Lindstromf7297dd2001-07-04 05:02:23 +0000271 rsa_generate_additional_parameters(key->rsa);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000272 break;
273 }
Damien Miller874d77b2000-10-14 16:23:11 +1100274 rlen = buffer_len(&b);
Ben Lindstrom1c37c6a2001-12-06 18:00:18 +0000275 if (rlen != 0)
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000276 error("do_convert_private_ssh2_from_blob: "
277 "remaining bytes in key blob %d", rlen);
Damien Miller874d77b2000-10-14 16:23:11 +1100278 buffer_free(&b);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000279
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000280 /* try the key */
281 key_sign(key, &sig, &slen, data, sizeof(data));
282 key_verify(key, sig, slen, data, sizeof(data));
283 xfree(sig);
Damien Miller874d77b2000-10-14 16:23:11 +1100284 return key;
285}
286
Ben Lindstrombba81212001-06-25 05:01:22 +0000287static void
Damien Millereba71ba2000-04-29 23:57:08 +1000288do_convert_from_ssh2(struct passwd *pw)
289{
290 Key *k;
291 int blen;
Ben Lindstrom155b9812002-04-02 20:26:26 +0000292 u_int len;
Damien Millereba71ba2000-04-29 23:57:08 +1000293 char line[1024], *p;
Ben Lindstrom9e0ddd42001-09-18 05:41:19 +0000294 u_char blob[8096];
Damien Millereba71ba2000-04-29 23:57:08 +1000295 char encoded[8096];
296 struct stat st;
Damien Miller874d77b2000-10-14 16:23:11 +1100297 int escaped = 0, private = 0, ok;
Damien Millereba71ba2000-04-29 23:57:08 +1000298 FILE *fp;
299
300 if (!have_identity)
301 ask_filename(pw, "Enter file in which the key is");
302 if (stat(identity_file, &st) < 0) {
303 perror(identity_file);
304 exit(1);
305 }
306 fp = fopen(identity_file, "r");
307 if (fp == NULL) {
308 perror(identity_file);
309 exit(1);
310 }
311 encoded[0] = '\0';
312 while (fgets(line, sizeof(line), fp)) {
Damien Miller30c3d422000-05-09 11:02:59 +1000313 if (!(p = strchr(line, '\n'))) {
314 fprintf(stderr, "input line too long.\n");
315 exit(1);
316 }
317 if (p > line && p[-1] == '\\')
318 escaped++;
Damien Millereba71ba2000-04-29 23:57:08 +1000319 if (strncmp(line, "----", 4) == 0 ||
320 strstr(line, ": ") != NULL) {
Damien Miller874d77b2000-10-14 16:23:11 +1100321 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
322 private = 1;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000323 if (strstr(line, " END ") != NULL) {
324 break;
325 }
Ben Lindstrom30358602001-04-24 16:59:28 +0000326 /* fprintf(stderr, "ignore: %s", line); */
Damien Millereba71ba2000-04-29 23:57:08 +1000327 continue;
328 }
Damien Miller30c3d422000-05-09 11:02:59 +1000329 if (escaped) {
330 escaped--;
Ben Lindstrom30358602001-04-24 16:59:28 +0000331 /* fprintf(stderr, "escaped: %s", line); */
Damien Miller30c3d422000-05-09 11:02:59 +1000332 continue;
Damien Millereba71ba2000-04-29 23:57:08 +1000333 }
334 *p = '\0';
335 strlcat(encoded, line, sizeof(encoded));
336 }
Ben Lindstrom155b9812002-04-02 20:26:26 +0000337 len = strlen(encoded);
338 if (((len % 4) == 3) &&
339 (encoded[len-1] == '=') &&
340 (encoded[len-2] == '=') &&
341 (encoded[len-3] == '='))
342 encoded[len-3] = '\0';
Damien Miller4a8ed542002-01-22 23:33:31 +1100343 blen = uudecode(encoded, blob, sizeof(blob));
Damien Millereba71ba2000-04-29 23:57:08 +1000344 if (blen < 0) {
345 fprintf(stderr, "uudecode failed.\n");
346 exit(1);
347 }
Damien Miller874d77b2000-10-14 16:23:11 +1100348 k = private ?
349 do_convert_private_ssh2_from_blob(blob, blen) :
Damien Miller0bc1bd82000-11-13 22:57:25 +1100350 key_from_blob(blob, blen);
Damien Miller874d77b2000-10-14 16:23:11 +1100351 if (k == NULL) {
352 fprintf(stderr, "decode blob failed.\n");
353 exit(1);
354 }
355 ok = private ?
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000356 (k->type == KEY_DSA ?
357 PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) :
358 PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, NULL, 0, NULL, NULL)) :
Damien Miller874d77b2000-10-14 16:23:11 +1100359 key_write(k, stdout);
360 if (!ok) {
361 fprintf(stderr, "key write failed");
362 exit(1);
363 }
Damien Millereba71ba2000-04-29 23:57:08 +1000364 key_free(k);
Damien Millera1db12b2002-01-22 23:20:15 +1100365 if (!private)
366 fprintf(stdout, "\n");
Damien Millereba71ba2000-04-29 23:57:08 +1000367 fclose(fp);
368 exit(0);
369}
370
Ben Lindstrombba81212001-06-25 05:01:22 +0000371static void
Damien Millereba71ba2000-04-29 23:57:08 +1000372do_print_public(struct passwd *pw)
373{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000374 Key *prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000375 struct stat st;
376
377 if (!have_identity)
378 ask_filename(pw, "Enter file in which the key is");
379 if (stat(identity_file, &st) < 0) {
380 perror(identity_file);
381 exit(1);
382 }
Ben Lindstromd78ae762001-06-05 20:35:09 +0000383 prv = load_identity(identity_file);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000384 if (prv == NULL) {
Damien Millereba71ba2000-04-29 23:57:08 +1000385 fprintf(stderr, "load failed\n");
386 exit(1);
387 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000388 if (!key_write(prv, stdout))
Damien Millereba71ba2000-04-29 23:57:08 +1000389 fprintf(stderr, "key_write failed");
Ben Lindstromd0fca422001-03-26 13:44:06 +0000390 key_free(prv);
Damien Millereba71ba2000-04-29 23:57:08 +1000391 fprintf(stdout, "\n");
392 exit(0);
393}
394
Ben Lindstrom6818bfb2001-08-06 21:40:04 +0000395#ifdef SMARTCARD
Ben Lindstromcd392282001-07-04 03:44:03 +0000396static void
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000397do_upload(struct passwd *pw, const char *sc_reader_id)
Ben Lindstromcd392282001-07-04 03:44:03 +0000398{
Ben Lindstromcd392282001-07-04 03:44:03 +0000399 Key *prv = NULL;
400 struct stat st;
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000401 int ret;
Ben Lindstromcd392282001-07-04 03:44:03 +0000402
403 if (!have_identity)
404 ask_filename(pw, "Enter file in which the key is");
405 if (stat(identity_file, &st) < 0) {
406 perror(identity_file);
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000407 exit(1);
Ben Lindstromcd392282001-07-04 03:44:03 +0000408 }
409 prv = load_identity(identity_file);
410 if (prv == NULL) {
411 error("load failed");
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000412 exit(1);
Ben Lindstromcd392282001-07-04 03:44:03 +0000413 }
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000414 ret = sc_put_key(prv, sc_reader_id);
415 key_free(prv);
416 if (ret < 0)
417 exit(1);
Ben Lindstrom5a6abda2002-06-09 19:41:48 +0000418 log("loading key done");
Ben Lindstrom70e3ad82002-03-22 03:33:43 +0000419 exit(0);
Ben Lindstromcd392282001-07-04 03:44:03 +0000420}
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000421
422static void
423do_download(struct passwd *pw, const char *sc_reader_id)
424{
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000425 Key **keys = NULL;
426 int i;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000427
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000428 keys = sc_get_keys(sc_reader_id, NULL);
429 if (keys == NULL)
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000430 fatal("cannot read public key from smartcard");
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000431 for (i = 0; keys[i]; i++) {
432 key_write(keys[i], stdout);
433 key_free(keys[i]);
434 fprintf(stdout, "\n");
435 }
436 xfree(keys);
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000437 exit(0);
438}
Ben Lindstromffce1472001-08-06 21:57:31 +0000439#endif /* SMARTCARD */
Ben Lindstromcd392282001-07-04 03:44:03 +0000440
Ben Lindstrombba81212001-06-25 05:01:22 +0000441static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100442do_fingerprint(struct passwd *pw)
443{
Damien Miller98c7ad62000-03-09 21:27:49 +1100444 FILE *f;
Damien Millereba71ba2000-04-29 23:57:08 +1000445 Key *public;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000446 char *comment = NULL, *cp, *ep, line[16*1024], *fp;
Ben Lindstrom65366a82001-12-06 16:32:47 +0000447 int i, skip = 0, num = 1, invalid = 1;
448 enum fp_rep rep;
449 enum fp_type fptype;
Damien Miller95def091999-11-25 00:26:21 +1100450 struct stat st;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100451
Ben Lindstromd0fca422001-03-26 13:44:06 +0000452 fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5;
453 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000454
Damien Miller95def091999-11-25 00:26:21 +1100455 if (!have_identity)
456 ask_filename(pw, "Enter file in which the key is");
457 if (stat(identity_file, &st) < 0) {
458 perror(identity_file);
459 exit(1);
460 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000461 public = key_load_public(identity_file, &comment);
462 if (public != NULL) {
463 fp = key_fingerprint(public, fptype, rep);
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000464 printf("%u %s %s\n", key_size(public), fp, comment);
Damien Miller0bc1bd82000-11-13 22:57:25 +1100465 key_free(public);
466 xfree(comment);
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000467 xfree(fp);
Damien Miller98c7ad62000-03-09 21:27:49 +1100468 exit(0);
469 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000470 if (comment)
471 xfree(comment);
Damien Miller98c7ad62000-03-09 21:27:49 +1100472
473 f = fopen(identity_file, "r");
474 if (f != NULL) {
Damien Miller98c7ad62000-03-09 21:27:49 +1100475 while (fgets(line, sizeof(line), f)) {
476 i = strlen(line) - 1;
477 if (line[i] != '\n') {
478 error("line %d too long: %.40s...", num, line);
479 skip = 1;
480 continue;
Damien Miller95def091999-11-25 00:26:21 +1100481 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100482 num++;
483 if (skip) {
484 skip = 0;
485 continue;
486 }
487 line[i] = '\0';
488
489 /* Skip leading whitespace, empty and comment lines. */
490 for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
491 ;
492 if (!*cp || *cp == '\n' || *cp == '#')
493 continue ;
494 i = strtol(cp, &ep, 10);
495 if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) {
496 int quoted = 0;
497 comment = cp;
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000498 for (; *cp && (quoted || (*cp != ' ' &&
499 *cp != '\t')); cp++) {
Damien Miller98c7ad62000-03-09 21:27:49 +1100500 if (*cp == '\\' && cp[1] == '"')
501 cp++; /* Skip both */
502 else if (*cp == '"')
503 quoted = !quoted;
504 }
505 if (!*cp)
506 continue;
507 *cp++ = '\0';
508 }
509 ep = cp;
Ben Lindstrom2941f112000-12-29 16:50:13 +0000510 public = key_new(KEY_RSA1);
511 if (key_read(public, &cp) != 1) {
512 cp = ep;
513 key_free(public);
514 public = key_new(KEY_UNSPEC);
515 if (key_read(public, &cp) != 1) {
516 key_free(public);
517 continue;
518 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100519 }
Ben Lindstrom2941f112000-12-29 16:50:13 +0000520 comment = *cp ? cp : comment;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000521 fp = key_fingerprint(public, fptype, rep);
Ben Lindstrom58d3b722002-06-23 21:28:13 +0000522 printf("%u %s %s\n", key_size(public), fp,
Ben Lindstrom2941f112000-12-29 16:50:13 +0000523 comment ? comment : "no comment");
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000524 xfree(fp);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000525 key_free(public);
Ben Lindstrom2941f112000-12-29 16:50:13 +0000526 invalid = 0;
Damien Miller95def091999-11-25 00:26:21 +1100527 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100528 fclose(f);
Damien Miller95def091999-11-25 00:26:21 +1100529 }
Damien Miller98c7ad62000-03-09 21:27:49 +1100530 if (invalid) {
Damien Millereb5fec62001-11-12 10:52:44 +1100531 printf("%s is not a public key file.\n", identity_file);
Damien Miller98c7ad62000-03-09 21:27:49 +1100532 exit(1);
533 }
Damien Miller95def091999-11-25 00:26:21 +1100534 exit(0);
Damien Miller10f6f6b1999-11-17 17:29:08 +1100535}
536
Damien Miller95def091999-11-25 00:26:21 +1100537/*
538 * Perform changing a passphrase. The argument is the passwd structure
539 * for the current user.
540 */
Ben Lindstrombba81212001-06-25 05:01:22 +0000541static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100542do_change_passphrase(struct passwd *pw)
543{
Damien Miller95def091999-11-25 00:26:21 +1100544 char *comment;
545 char *old_passphrase, *passphrase1, *passphrase2;
546 struct stat st;
Damien Millereba71ba2000-04-29 23:57:08 +1000547 Key *private;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100548
Damien Miller95def091999-11-25 00:26:21 +1100549 if (!have_identity)
550 ask_filename(pw, "Enter file in which the key is");
Damien Miller95def091999-11-25 00:26:21 +1100551 if (stat(identity_file, &st) < 0) {
552 perror(identity_file);
553 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000554 }
Damien Miller95def091999-11-25 00:26:21 +1100555 /* Try to load the file with empty passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000556 private = key_load_private(identity_file, "", &comment);
557 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100558 if (identity_passphrase)
559 old_passphrase = xstrdup(identity_passphrase);
560 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000561 old_passphrase =
562 read_passphrase("Enter old passphrase: ",
563 RP_ALLOW_STDIN);
564 private = key_load_private(identity_file, old_passphrase,
565 &comment);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000566 memset(old_passphrase, 0, strlen(old_passphrase));
567 xfree(old_passphrase);
568 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100569 printf("Bad passphrase.\n");
570 exit(1);
571 }
Damien Miller95def091999-11-25 00:26:21 +1100572 }
573 printf("Key has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000574
Damien Miller95def091999-11-25 00:26:21 +1100575 /* Ask the new passphrase (twice). */
576 if (identity_new_passphrase) {
577 passphrase1 = xstrdup(identity_new_passphrase);
578 passphrase2 = NULL;
579 } else {
580 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +0000581 read_passphrase("Enter new passphrase (empty for no "
582 "passphrase): ", RP_ALLOW_STDIN);
583 passphrase2 = read_passphrase("Enter same passphrase again: ",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100584 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +1100585
586 /* Verify that they are the same. */
587 if (strcmp(passphrase1, passphrase2) != 0) {
588 memset(passphrase1, 0, strlen(passphrase1));
589 memset(passphrase2, 0, strlen(passphrase2));
590 xfree(passphrase1);
591 xfree(passphrase2);
592 printf("Pass phrases do not match. Try again.\n");
593 exit(1);
594 }
595 /* Destroy the other copy. */
596 memset(passphrase2, 0, strlen(passphrase2));
597 xfree(passphrase2);
598 }
599
600 /* Save the file using the new passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000601 if (!key_save_private(private, identity_file, passphrase1, comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +0000602 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100603 memset(passphrase1, 0, strlen(passphrase1));
604 xfree(passphrase1);
Damien Millereba71ba2000-04-29 23:57:08 +1000605 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100606 xfree(comment);
607 exit(1);
608 }
609 /* Destroy the passphrase and the copy of the key in memory. */
610 memset(passphrase1, 0, strlen(passphrase1));
611 xfree(passphrase1);
Damien Millereba71ba2000-04-29 23:57:08 +1000612 key_free(private); /* Destroys contents */
Damien Miller95def091999-11-25 00:26:21 +1100613 xfree(comment);
614
615 printf("Your identification has been saved with the new passphrase.\n");
616 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000617}
618
Damien Miller95def091999-11-25 00:26:21 +1100619/*
620 * Change the comment of a private key file.
621 */
Ben Lindstrombba81212001-06-25 05:01:22 +0000622static void
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000623do_change_comment(struct passwd *pw)
624{
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000625 char new_comment[1024], *comment, *passphrase;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000626 Key *private;
627 Key *public;
Damien Miller95def091999-11-25 00:26:21 +1100628 struct stat st;
629 FILE *f;
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000630 int fd;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000631
Damien Miller95def091999-11-25 00:26:21 +1100632 if (!have_identity)
633 ask_filename(pw, "Enter file in which the key is");
Damien Miller95def091999-11-25 00:26:21 +1100634 if (stat(identity_file, &st) < 0) {
635 perror(identity_file);
636 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000637 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000638 private = key_load_private(identity_file, "", &comment);
639 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100640 if (identity_passphrase)
641 passphrase = xstrdup(identity_passphrase);
642 else if (identity_new_passphrase)
643 passphrase = xstrdup(identity_new_passphrase);
644 else
Ben Lindstrom949974b2001-06-25 05:20:31 +0000645 passphrase = read_passphrase("Enter passphrase: ",
646 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +1100647 /* Try to load using the passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000648 private = key_load_private(identity_file, passphrase, &comment);
649 if (private == NULL) {
Damien Miller95def091999-11-25 00:26:21 +1100650 memset(passphrase, 0, strlen(passphrase));
651 xfree(passphrase);
652 printf("Bad passphrase.\n");
653 exit(1);
654 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000655 } else {
656 passphrase = xstrdup("");
Damien Miller95def091999-11-25 00:26:21 +1100657 }
Ben Lindstromd0fca422001-03-26 13:44:06 +0000658 if (private->type != KEY_RSA1) {
659 fprintf(stderr, "Comments are only supported for RSA1 keys.\n");
660 key_free(private);
661 exit(1);
Damien Miller9f0f5c62001-12-21 14:45:46 +1100662 }
Damien Miller95def091999-11-25 00:26:21 +1100663 printf("Key now has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000664
Damien Miller95def091999-11-25 00:26:21 +1100665 if (identity_comment) {
666 strlcpy(new_comment, identity_comment, sizeof(new_comment));
667 } else {
668 printf("Enter new comment: ");
669 fflush(stdout);
670 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
671 memset(passphrase, 0, strlen(passphrase));
Damien Millereba71ba2000-04-29 23:57:08 +1000672 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100673 exit(1);
674 }
Damien Miller95def091999-11-25 00:26:21 +1100675 if (strchr(new_comment, '\n'))
676 *strchr(new_comment, '\n') = 0;
677 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000678
Damien Miller95def091999-11-25 00:26:21 +1100679 /* Save the file using the new passphrase. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000680 if (!key_save_private(private, identity_file, passphrase, new_comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +0000681 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100682 memset(passphrase, 0, strlen(passphrase));
683 xfree(passphrase);
Damien Millereba71ba2000-04-29 23:57:08 +1000684 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100685 xfree(comment);
686 exit(1);
687 }
Damien Miller95def091999-11-25 00:26:21 +1100688 memset(passphrase, 0, strlen(passphrase));
689 xfree(passphrase);
Ben Lindstromd0fca422001-03-26 13:44:06 +0000690 public = key_from_private(private);
Damien Millereba71ba2000-04-29 23:57:08 +1000691 key_free(private);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000692
Damien Miller95def091999-11-25 00:26:21 +1100693 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000694 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
695 if (fd == -1) {
Damien Miller95def091999-11-25 00:26:21 +1100696 printf("Could not save your public key in %s\n", identity_file);
697 exit(1);
698 }
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000699 f = fdopen(fd, "w");
700 if (f == NULL) {
701 printf("fdopen %s failed", identity_file);
702 exit(1);
703 }
Damien Millereba71ba2000-04-29 23:57:08 +1000704 if (!key_write(public, f))
705 fprintf(stderr, "write key failed");
706 key_free(public);
707 fprintf(f, " %s\n", new_comment);
Damien Miller95def091999-11-25 00:26:21 +1100708 fclose(f);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000709
Damien Miller95def091999-11-25 00:26:21 +1100710 xfree(comment);
711
712 printf("The comment in your key file has been changed.\n");
713 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000714}
715
Ben Lindstrombba81212001-06-25 05:01:22 +0000716static void
Damien Miller431f66b1999-11-21 18:31:57 +1100717usage(void)
718{
Ben Lindstrom97be31e2001-08-06 21:49:06 +0000719 fprintf(stderr, "Usage: %s [options]\n", __progname);
720 fprintf(stderr, "Options:\n");
721 fprintf(stderr, " -b bits Number of bits in the key to create.\n");
722 fprintf(stderr, " -c Change comment in private and public key files.\n");
723 fprintf(stderr, " -e Convert OpenSSH to IETF SECSH key file.\n");
724 fprintf(stderr, " -f filename Filename of the key file.\n");
725 fprintf(stderr, " -i Convert IETF SECSH to OpenSSH key file.\n");
726 fprintf(stderr, " -l Show fingerprint of key file.\n");
727 fprintf(stderr, " -p Change passphrase of private key file.\n");
728 fprintf(stderr, " -q Quiet.\n");
729 fprintf(stderr, " -y Read private key file and print public key.\n");
730 fprintf(stderr, " -t type Specify type of key to create.\n");
731 fprintf(stderr, " -B Show bubblebabble digest of key file.\n");
732 fprintf(stderr, " -C comment Provide new comment.\n");
733 fprintf(stderr, " -N phrase Provide new passphrase.\n");
734 fprintf(stderr, " -P phrase Provide old passphrase.\n");
735#ifdef SMARTCARD
736 fprintf(stderr, " -D reader Download public key from smartcard.\n");
737 fprintf(stderr, " -U reader Upload private key to smartcard.\n");
738#endif /* SMARTCARD */
739
Damien Miller95def091999-11-25 00:26:21 +1100740 exit(1);
Damien Miller431f66b1999-11-21 18:31:57 +1100741}
742
Damien Miller95def091999-11-25 00:26:21 +1100743/*
744 * Main program for key management.
745 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000746int
747main(int ac, char **av)
748{
Damien Millera41c8b12002-01-22 23:05:08 +1100749 char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000750 char *reader_id = NULL;
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000751 Key *private, *public;
Damien Miller95def091999-11-25 00:26:21 +1100752 struct passwd *pw;
Damien Miller95def091999-11-25 00:26:21 +1100753 struct stat st;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000754 int opt, type, fd, download = 0;
Damien Miller95def091999-11-25 00:26:21 +1100755 FILE *f;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100756
Damien Miller95def091999-11-25 00:26:21 +1100757 extern int optind;
758 extern char *optarg;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000759
Ben Lindstrom49a79c02000-11-17 03:47:20 +0000760 __progname = get_progname(av[0]);
Damien Millerf9b625c2000-07-09 22:42:32 +1000761
Damien Millerd3a18572000-06-07 19:55:44 +1000762 SSLeay_add_all_algorithms();
Kevin Steves3a881912002-07-20 19:05:40 +0000763 init_rng();
764 seed_rng();
Damien Millereba71ba2000-04-29 23:57:08 +1000765
Damien Miller5428f641999-11-25 11:54:57 +1100766 /* we need this for the home * directory. */
Damien Miller95def091999-11-25 00:26:21 +1100767 pw = getpwuid(getuid());
768 if (!pw) {
769 printf("You don't exist, go away!\n");
770 exit(1);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000771 }
Damien Millereba71ba2000-04-29 23:57:08 +1000772 if (gethostname(hostname, sizeof(hostname)) < 0) {
773 perror("gethostname");
774 exit(1);
775 }
Damien Miller5428f641999-11-25 11:54:57 +1100776
Ben Lindstromf19578c2001-08-06 21:46:54 +0000777 while ((opt = getopt(ac, av, "deiqpclBRxXyb:f:t:U:D:P:N:C:")) != -1) {
Damien Miller95def091999-11-25 00:26:21 +1100778 switch (opt) {
779 case 'b':
780 bits = atoi(optarg);
781 if (bits < 512 || bits > 32768) {
782 printf("Bits has bad value.\n");
783 exit(1);
784 }
785 break;
Damien Miller95def091999-11-25 00:26:21 +1100786 case 'l':
787 print_fingerprint = 1;
788 break;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000789 case 'B':
790 print_bubblebabble = 1;
791 break;
Damien Miller95def091999-11-25 00:26:21 +1100792 case 'p':
793 change_passphrase = 1;
794 break;
Damien Miller95def091999-11-25 00:26:21 +1100795 case 'c':
796 change_comment = 1;
797 break;
Damien Miller95def091999-11-25 00:26:21 +1100798 case 'f':
799 strlcpy(identity_file, optarg, sizeof(identity_file));
800 have_identity = 1;
801 break;
Damien Miller95def091999-11-25 00:26:21 +1100802 case 'P':
803 identity_passphrase = optarg;
804 break;
Damien Miller95def091999-11-25 00:26:21 +1100805 case 'N':
806 identity_new_passphrase = optarg;
807 break;
Damien Miller95def091999-11-25 00:26:21 +1100808 case 'C':
809 identity_comment = optarg;
810 break;
Damien Miller95def091999-11-25 00:26:21 +1100811 case 'q':
812 quiet = 1;
813 break;
Damien Millereba71ba2000-04-29 23:57:08 +1000814 case 'R':
Damien Miller0bc1bd82000-11-13 22:57:25 +1100815 /* unused */
816 exit(0);
Damien Millereba71ba2000-04-29 23:57:08 +1000817 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +0000818 case 'e':
Damien Millereba71ba2000-04-29 23:57:08 +1000819 case 'x':
Ben Lindstrom5a707822001-04-22 17:15:46 +0000820 /* export key */
Damien Millereba71ba2000-04-29 23:57:08 +1000821 convert_to_ssh2 = 1;
822 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +0000823 case 'i':
Damien Millereba71ba2000-04-29 23:57:08 +1000824 case 'X':
Ben Lindstrom5a707822001-04-22 17:15:46 +0000825 /* import key */
Damien Millereba71ba2000-04-29 23:57:08 +1000826 convert_from_ssh2 = 1;
827 break;
Damien Millereba71ba2000-04-29 23:57:08 +1000828 case 'y':
829 print_public = 1;
830 break;
Damien Millereba71ba2000-04-29 23:57:08 +1000831 case 'd':
Damien Miller0bc1bd82000-11-13 22:57:25 +1100832 key_type_name = "dsa";
Damien Millereba71ba2000-04-29 23:57:08 +1000833 break;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100834 case 't':
835 key_type_name = optarg;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100836 break;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000837 case 'D':
838 download = 1;
Ben Lindstromf19578c2001-08-06 21:46:54 +0000839 case 'U':
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000840 reader_id = optarg;
Ben Lindstromcd392282001-07-04 03:44:03 +0000841 break;
Damien Miller95def091999-11-25 00:26:21 +1100842 case '?':
843 default:
844 usage();
845 }
846 }
847 if (optind < ac) {
848 printf("Too many arguments.\n");
849 usage();
850 }
851 if (change_passphrase && change_comment) {
852 printf("Can only have one of -p and -c.\n");
853 usage();
854 }
Ben Lindstrom8fd372b2001-03-12 03:02:17 +0000855 if (print_fingerprint || print_bubblebabble)
Damien Miller95def091999-11-25 00:26:21 +1100856 do_fingerprint(pw);
Damien Miller95def091999-11-25 00:26:21 +1100857 if (change_passphrase)
858 do_change_passphrase(pw);
Damien Miller4a10d2e2002-03-11 22:53:29 +1100859 if (change_comment)
860 do_change_comment(pw);
Kevin Steves3a881912002-07-20 19:05:40 +0000861 if (convert_to_ssh2)
862 do_convert_to_ssh2(pw);
863 if (convert_from_ssh2)
864 do_convert_from_ssh2(pw);
Damien Millereba71ba2000-04-29 23:57:08 +1000865 if (print_public)
866 do_print_public(pw);
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000867 if (reader_id != NULL) {
Ben Lindstrom6818bfb2001-08-06 21:40:04 +0000868#ifdef SMARTCARD
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000869 if (download)
870 do_download(pw, reader_id);
871 else
872 do_upload(pw, reader_id);
Ben Lindstromffce1472001-08-06 21:57:31 +0000873#else /* SMARTCARD */
Ben Lindstrom6818bfb2001-08-06 21:40:04 +0000874 fatal("no support for smartcards.");
Ben Lindstromffce1472001-08-06 21:57:31 +0000875#endif /* SMARTCARD */
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000876 }
Damien Miller95def091999-11-25 00:26:21 +1100877
878 arc4random_stir();
879
Damien Miller154dda72002-01-22 23:08:16 +1100880 if (key_type_name == NULL) {
881 printf("You must specify a key type (-t).\n");
882 usage();
883 }
Damien Millere39cacc2000-11-29 12:18:44 +1100884 type = key_type_from_name(key_type_name);
885 if (type == KEY_UNSPEC) {
886 fprintf(stderr, "unknown key type %s\n", key_type_name);
887 exit(1);
Damien Millereba71ba2000-04-29 23:57:08 +1000888 }
Damien Miller0bc1bd82000-11-13 22:57:25 +1100889 if (!quiet)
Damien Millere39cacc2000-11-29 12:18:44 +1100890 printf("Generating public/private %s key pair.\n", key_type_name);
Damien Miller0bc1bd82000-11-13 22:57:25 +1100891 private = key_generate(type, bits);
892 if (private == NULL) {
893 fprintf(stderr, "key_generate failed");
894 exit(1);
895 }
896 public = key_from_private(private);
Damien Miller95def091999-11-25 00:26:21 +1100897
898 if (!have_identity)
899 ask_filename(pw, "Enter file in which to save the key");
900
901 /* Create ~/.ssh directory if it doesn\'t already exist. */
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000902 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, _PATH_SSH_USER_DIR);
Damien Miller95def091999-11-25 00:26:21 +1100903 if (strstr(identity_file, dotsshdir) != NULL &&
904 stat(dotsshdir, &st) < 0) {
Damien Millerbe484b52000-07-15 14:14:16 +1000905 if (mkdir(dotsshdir, 0700) < 0)
Damien Miller95def091999-11-25 00:26:21 +1100906 error("Could not create directory '%s'.", dotsshdir);
907 else if (!quiet)
908 printf("Created directory '%s'.\n", dotsshdir);
909 }
910 /* If the file already exists, ask the user to confirm. */
911 if (stat(identity_file, &st) >= 0) {
912 char yesno[3];
913 printf("%s already exists.\n", identity_file);
914 printf("Overwrite (y/n)? ");
915 fflush(stdout);
916 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
917 exit(1);
918 if (yesno[0] != 'y' && yesno[0] != 'Y')
919 exit(1);
920 }
921 /* Ask for a passphrase (twice). */
922 if (identity_passphrase)
923 passphrase1 = xstrdup(identity_passphrase);
924 else if (identity_new_passphrase)
925 passphrase1 = xstrdup(identity_new_passphrase);
926 else {
927passphrase_again:
928 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +0000929 read_passphrase("Enter passphrase (empty for no "
930 "passphrase): ", RP_ALLOW_STDIN);
931 passphrase2 = read_passphrase("Enter same passphrase again: ",
932 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +1100933 if (strcmp(passphrase1, passphrase2) != 0) {
Ben Lindstrom949974b2001-06-25 05:20:31 +0000934 /*
935 * The passphrases do not match. Clear them and
936 * retry.
937 */
Damien Miller95def091999-11-25 00:26:21 +1100938 memset(passphrase1, 0, strlen(passphrase1));
939 memset(passphrase2, 0, strlen(passphrase2));
940 xfree(passphrase1);
941 xfree(passphrase2);
942 printf("Passphrases do not match. Try again.\n");
943 goto passphrase_again;
944 }
945 /* Clear the other copy of the passphrase. */
946 memset(passphrase2, 0, strlen(passphrase2));
947 xfree(passphrase2);
948 }
949
Damien Miller95def091999-11-25 00:26:21 +1100950 if (identity_comment) {
951 strlcpy(comment, identity_comment, sizeof(comment));
952 } else {
Damien Miller4af51302000-04-16 11:18:38 +1000953 /* Create default commend field for the passphrase. */
Damien Miller95def091999-11-25 00:26:21 +1100954 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
955 }
956
957 /* Save the key with the given passphrase and comment. */
Ben Lindstromd0fca422001-03-26 13:44:06 +0000958 if (!key_save_private(private, identity_file, passphrase1, comment)) {
Ben Lindstrom15f33862001-04-16 02:00:02 +0000959 printf("Saving the key failed: %s.\n", identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100960 memset(passphrase1, 0, strlen(passphrase1));
961 xfree(passphrase1);
962 exit(1);
963 }
964 /* Clear the passphrase. */
965 memset(passphrase1, 0, strlen(passphrase1));
966 xfree(passphrase1);
967
968 /* Clear the private key and the random number generator. */
Damien Miller0bc1bd82000-11-13 22:57:25 +1100969 key_free(private);
Damien Miller95def091999-11-25 00:26:21 +1100970 arc4random_stir();
971
972 if (!quiet)
973 printf("Your identification has been saved in %s.\n", identity_file);
974
Damien Miller95def091999-11-25 00:26:21 +1100975 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000976 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
977 if (fd == -1) {
Damien Miller95def091999-11-25 00:26:21 +1100978 printf("Could not save your public key in %s\n", identity_file);
979 exit(1);
980 }
Ben Lindstrom5fc62702001-03-09 18:19:24 +0000981 f = fdopen(fd, "w");
982 if (f == NULL) {
983 printf("fdopen %s failed", identity_file);
984 exit(1);
985 }
Damien Millereba71ba2000-04-29 23:57:08 +1000986 if (!key_write(public, f))
987 fprintf(stderr, "write key failed");
988 fprintf(f, " %s\n", comment);
Damien Miller95def091999-11-25 00:26:21 +1100989 fclose(f);
990
991 if (!quiet) {
Ben Lindstromcfccef92001-03-13 04:57:58 +0000992 char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX);
Damien Millereba71ba2000-04-29 23:57:08 +1000993 printf("Your public key has been saved in %s.\n",
994 identity_file);
Damien Miller95def091999-11-25 00:26:21 +1100995 printf("The key fingerprint is:\n");
Ben Lindstromcfccef92001-03-13 04:57:58 +0000996 printf("%s %s\n", fp, comment);
997 xfree(fp);
Damien Miller95def091999-11-25 00:26:21 +1100998 }
Damien Millereba71ba2000-04-29 23:57:08 +1000999
1000 key_free(public);
Damien Miller95def091999-11-25 00:26:21 +11001001 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001002}