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markus@openbsd.org2c557442019-11-12 19:33:08 +00001/* $OpenBSD: ssh-keygen.c,v 1.362 2019/11/12 19:33:08 markus Exp $ */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002/*
Damien Miller95def091999-11-25 00:26:21 +11003 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * All rights reserved
Damien Miller95def091999-11-25 00:26:21 +11006 * Identity and host key generation and maintenance.
Damien Millere4340be2000-09-16 13:29:08 +11007 *
8 * As far as I am concerned, the code I have written for this software
9 * can be used freely for any purpose. Any derived versions of this
10 * software must be clearly marked as such, and if the derived work is
11 * incompatible with the protocol description in the RFC file, it must be
12 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110013 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100014
15#include "includes.h"
Damien Millerf17883e2006-03-15 11:45:54 +110016
17#include <sys/types.h>
Damien Millere3b60b52006-07-10 21:08:03 +100018#include <sys/socket.h>
Damien Millerf17883e2006-03-15 11:45:54 +110019#include <sys/stat.h>
Damien Millerd4a8b7e1999-10-27 13:42:43 +100020
Damien Miller72ef7c12015-01-15 02:21:31 +110021#ifdef WITH_OPENSSL
Damien Millereba71ba2000-04-29 23:57:08 +100022#include <openssl/evp.h>
23#include <openssl/pem.h>
Darren Tuckerbfaaf962008-02-28 19:13:52 +110024#include "openbsd-compat/openssl-compat.h"
Damien Miller72ef7c12015-01-15 02:21:31 +110025#endif
Damien Millereba71ba2000-04-29 23:57:08 +100026
Damien Millercfc18972019-10-09 09:06:35 +110027#ifdef HAVE_STDINT_H
28# include <stdint.h>
29#endif
Darren Tucker39972492006-07-12 22:22:46 +100030#include <errno.h>
Damien Miller57cf6382006-07-10 21:13:46 +100031#include <fcntl.h>
Damien Millerb8fe89c2006-07-24 14:51:00 +100032#include <netdb.h>
Darren Tucker2ee50c52006-07-11 18:55:05 +100033#ifdef HAVE_PATHS_H
34# include <paths.h>
35#endif
Damien Miller9f2abc42006-07-10 20:53:08 +100036#include <pwd.h>
Damien Millerded319c2006-09-01 15:38:36 +100037#include <stdarg.h>
Damien Millera7a73ee2006-08-05 11:37:59 +100038#include <stdio.h>
Damien Millere7a1e5c2006-08-05 11:34:19 +100039#include <stdlib.h>
Damien Millere3476ed2006-07-24 14:13:33 +100040#include <string.h>
Damien Millere6b3b612006-07-24 14:01:23 +100041#include <unistd.h>
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +000042#include <limits.h>
djm@openbsd.orga287c5a2017-02-10 03:36:40 +000043#include <locale.h>
Damien Miller4d3b2f32018-07-12 14:49:14 +100044#include <time.h>
Damien Miller9f2abc42006-07-10 20:53:08 +100045
Damien Millerd4a8b7e1999-10-27 13:42:43 +100046#include "xmalloc.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000047#include "sshkey.h"
Damien Millereba71ba2000-04-29 23:57:08 +100048#include "authfile.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000049#include "sshbuf.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000050#include "pathnames.h"
51#include "log.h"
Darren Tuckere608ca22004-05-13 16:15:47 +100052#include "misc.h"
Damien Miller4b42d7f2005-03-01 21:48:35 +110053#include "match.h"
54#include "hostfile.h"
Damien Miller69996102006-07-10 20:53:31 +100055#include "dns.h"
Damien Millerf3747bf2013-01-18 11:44:04 +110056#include "ssh.h"
Damien Miller0a80ca12010-02-27 07:55:05 +110057#include "ssh2.h"
djm@openbsd.org1129dcf2015-01-15 09:40:00 +000058#include "ssherr.h"
Damien Miller7ea845e2010-02-12 09:21:02 +110059#include "ssh-pkcs11.h"
Damien Millerf3747bf2013-01-18 11:44:04 +110060#include "atomicio.h"
61#include "krl.h"
djm@openbsd.org56d1c832014-12-21 22:27:55 +000062#include "digest.h"
djm@openbsd.orga287c5a2017-02-10 03:36:40 +000063#include "utf8.h"
djm@openbsd.orga98339e2017-06-28 01:09:22 +000064#include "authfd.h"
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +000065#include "sshsig.h"
djm@openbsd.org23f38c22019-10-31 21:17:09 +000066#include "ssh-sk.h"
67#include "sk-api.h" /* XXX for SSH_SK_USER_PRESENCE_REQD; remove */
Ben Lindstromcd392282001-07-04 03:44:03 +000068
djm@openbsd.orgd1958792015-05-28 04:40:13 +000069#ifdef WITH_OPENSSL
70# define DEFAULT_KEY_TYPE_NAME "rsa"
71#else
72# define DEFAULT_KEY_TYPE_NAME "ed25519"
73#endif
74
dtucker@openbsd.orgf47269e2019-03-25 15:49:00 +000075/*
dtucker@openbsd.org26e0cef2019-03-25 16:19:44 +000076 * Default number of bits in the RSA, DSA and ECDSA keys. These value can be
77 * overridden on the command line.
78 *
79 * These values, with the exception of DSA, provide security equivalent to at
80 * least 128 bits of security according to NIST Special Publication 800-57:
81 * Recommendation for Key Management Part 1 rev 4 section 5.6.1.
82 * For DSA it (and FIPS-186-4 section 4.2) specifies that the only size for
83 * which a 160bit hash is acceptable is 1kbit, and since ssh-dss specifies only
84 * SHA1 we limit the DSA key size 1k bits.
dtucker@openbsd.orgf47269e2019-03-25 15:49:00 +000085 */
86#define DEFAULT_BITS 3072
Damien Miller3f54a9f2005-11-05 14:52:18 +110087#define DEFAULT_BITS_DSA 1024
Damien Miller6e9f6802010-09-10 11:17:38 +100088#define DEFAULT_BITS_ECDSA 256
Damien Millerd4a8b7e1999-10-27 13:42:43 +100089
djm@openbsd.org851f8032019-01-23 04:16:22 +000090static int quiet = 0;
Damien Millerf2b70ca2010-03-05 07:39:35 +110091
Damien Miller10f6f6b1999-11-17 17:29:08 +110092/* Flag indicating that we just want to see the key fingerprint */
djm@openbsd.org851f8032019-01-23 04:16:22 +000093static int print_fingerprint = 0;
94static int print_bubblebabble = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +110095
djm@openbsd.org56d1c832014-12-21 22:27:55 +000096/* Hash algorithm to use for fingerprints. */
djm@openbsd.org851f8032019-01-23 04:16:22 +000097static int fingerprint_hash = SSH_FP_HASH_DEFAULT;
djm@openbsd.org56d1c832014-12-21 22:27:55 +000098
Damien Miller431f66b1999-11-21 18:31:57 +110099/* The identity file name, given on the command line or entered by the user. */
deraadt@openbsd.org3e53ef22019-09-24 12:50:46 +0000100static char identity_file[PATH_MAX];
djm@openbsd.org851f8032019-01-23 04:16:22 +0000101static int have_identity = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000102
103/* This is set to the passphrase if given on the command line. */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000104static char *identity_passphrase = NULL;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000105
106/* This is set to the new passphrase if given on the command line. */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000107static char *identity_new_passphrase = NULL;
Damien Miller4e270b02010-04-16 15:56:21 +1000108
Damien Miller0a80ca12010-02-27 07:55:05 +1100109/* Key type when certifying */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000110static u_int cert_key_type = SSH2_CERT_TYPE_USER;
Damien Miller0a80ca12010-02-27 07:55:05 +1100111
112/* "key ID" of signed key */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000113static char *cert_key_id = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +1100114
115/* Comma-separated list of principal names for certifying keys */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000116static char *cert_principals = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +1100117
118/* Validity period for certificates */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000119static u_int64_t cert_valid_from = 0;
120static u_int64_t cert_valid_to = ~0ULL;
Damien Miller0a80ca12010-02-27 07:55:05 +1100121
Damien Miller4e270b02010-04-16 15:56:21 +1000122/* Certificate options */
Damien Millerd0e4a8e2010-05-21 14:58:32 +1000123#define CERTOPT_X_FWD (1)
124#define CERTOPT_AGENT_FWD (1<<1)
125#define CERTOPT_PORT_FWD (1<<2)
126#define CERTOPT_PTY (1<<3)
127#define CERTOPT_USER_RC (1<<4)
128#define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
129 CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
djm@openbsd.org851f8032019-01-23 04:16:22 +0000130static u_int32_t certflags_flags = CERTOPT_DEFAULT;
131static char *certflags_command = NULL;
132static char *certflags_src_addr = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +1100133
djm@openbsd.org249516e2017-04-29 04:12:25 +0000134/* Arbitrary extensions specified by user */
135struct cert_userext {
136 char *key;
137 char *val;
138 int crit;
139};
djm@openbsd.org851f8032019-01-23 04:16:22 +0000140static struct cert_userext *cert_userext;
141static size_t ncert_userext;
djm@openbsd.org249516e2017-04-29 04:12:25 +0000142
Damien Miller44b25042010-07-02 13:35:01 +1000143/* Conversion to/from various formats */
Damien Miller44b25042010-07-02 13:35:01 +1000144enum {
145 FMT_RFC4716,
146 FMT_PKCS8,
147 FMT_PEM
148} convert_format = FMT_RFC4716;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100149
djm@openbsd.org851f8032019-01-23 04:16:22 +0000150static char *key_type_name = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +1000151
Damien Miller757f34e2010-08-05 13:05:31 +1000152/* Load key from this PKCS#11 provider */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000153static char *pkcs11provider = NULL;
Damien Miller44b25042010-07-02 13:35:01 +1000154
djm@openbsd.org23f38c22019-10-31 21:17:09 +0000155/* FIDO/U2F provider to use */
156static char *sk_provider = NULL;
157
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +0000158/* Format for writing private keys */
159static int private_key_format = SSHKEY_PRIVATE_OPENSSH;
Damien Millerbcd00ab2013-12-07 10:41:55 +1100160
161/* Cipher for new-format private keys */
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +0000162static char *openssh_format_cipher = NULL;
Damien Millerbcd00ab2013-12-07 10:41:55 +1100163
164/*
165 * Number of KDF rounds to derive new format keys /
166 * number of primality trials when screening moduli.
167 */
djm@openbsd.org851f8032019-01-23 04:16:22 +0000168static int rounds = 0;
Damien Millerbcd00ab2013-12-07 10:41:55 +1100169
Damien Miller431f66b1999-11-21 18:31:57 +1100170/* argv0 */
171extern char *__progname;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000172
djm@openbsd.org851f8032019-01-23 04:16:22 +0000173static char hostname[NI_MAXHOST];
Damien Millereba71ba2000-04-29 23:57:08 +1000174
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +0000175#ifdef WITH_OPENSSL
Darren Tucker770fc012004-05-13 16:24:32 +1000176/* moduli.c */
Damien Millerb089fb52005-05-26 12:16:18 +1000177int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
Damien Millerdfceafe2012-07-06 13:44:19 +1000178int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
179 unsigned long);
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +0000180#endif
Darren Tucker770fc012004-05-13 16:24:32 +1000181
Ben Lindstrombba81212001-06-25 05:01:22 +0000182static void
djm@openbsd.org7efb4552015-01-18 13:22:28 +0000183type_bits_valid(int type, const char *name, u_int32_t *bitsp)
Damien Miller58f1baf2011-05-05 14:06:15 +1000184{
djm@openbsd.org3038a192015-04-17 13:19:22 +0000185 if (type == KEY_UNSPEC)
186 fatal("unknown key type %s", key_type_name);
Damien Miller884b63a2011-05-05 14:14:52 +1000187 if (*bitsp == 0) {
Damien Miller773dda22015-01-30 23:10:17 +1100188#ifdef WITH_OPENSSL
naddy@openbsd.orgc31e4f52019-08-05 21:45:27 +0000189 u_int nid;
190
191 switch(type) {
192 case KEY_DSA:
Damien Miller884b63a2011-05-05 14:14:52 +1000193 *bitsp = DEFAULT_BITS_DSA;
naddy@openbsd.orgc31e4f52019-08-05 21:45:27 +0000194 break;
195 case KEY_ECDSA:
djm@openbsd.org7efb4552015-01-18 13:22:28 +0000196 if (name != NULL &&
197 (nid = sshkey_ecdsa_nid_from_name(name)) > 0)
198 *bitsp = sshkey_curve_nid_to_bits(nid);
199 if (*bitsp == 0)
200 *bitsp = DEFAULT_BITS_ECDSA;
naddy@openbsd.orgc31e4f52019-08-05 21:45:27 +0000201 break;
202 case KEY_RSA:
Damien Miller884b63a2011-05-05 14:14:52 +1000203 *bitsp = DEFAULT_BITS;
naddy@openbsd.orgc31e4f52019-08-05 21:45:27 +0000204 break;
205 }
206#endif
Damien Miller58f1baf2011-05-05 14:06:15 +1000207 }
Damien Miller72ef7c12015-01-15 02:21:31 +1100208#ifdef WITH_OPENSSL
djm@openbsd.orgbd636f42017-05-07 23:15:59 +0000209 switch (type) {
210 case KEY_DSA:
211 if (*bitsp != 1024)
212 fatal("Invalid DSA key length: must be 1024 bits");
213 break;
214 case KEY_RSA:
215 if (*bitsp < SSH_RSA_MINIMUM_MODULUS_SIZE)
216 fatal("Invalid RSA key length: minimum is %d bits",
217 SSH_RSA_MINIMUM_MODULUS_SIZE);
naddy@openbsd.orgc31e4f52019-08-05 21:45:27 +0000218 else if (*bitsp > OPENSSL_RSA_MAX_MODULUS_BITS)
219 fatal("Invalid RSA key length: maximum is %d bits",
220 OPENSSL_RSA_MAX_MODULUS_BITS);
djm@openbsd.orgbd636f42017-05-07 23:15:59 +0000221 break;
222 case KEY_ECDSA:
223 if (sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
224 fatal("Invalid ECDSA key length: valid lengths are "
Manoj Ampalam9b47b082018-11-08 22:41:59 -0800225#ifdef OPENSSL_HAS_NISTP521
djm@openbsd.orgbd636f42017-05-07 23:15:59 +0000226 "256, 384 or 521 bits");
Manoj Ampalam9b47b082018-11-08 22:41:59 -0800227#else
228 "256 or 384 bits");
229#endif
djm@openbsd.orgbd636f42017-05-07 23:15:59 +0000230 }
Damien Miller1f0311c2014-05-15 14:24:09 +1000231#endif
Damien Miller58f1baf2011-05-05 14:06:15 +1000232}
233
djm@openbsd.org85443f12019-09-03 08:27:52 +0000234/*
235 * Checks whether a file exists and, if so, asks the user whether they wish
236 * to overwrite it.
237 * Returns nonzero if the file does not already exist or if the user agrees to
238 * overwrite, or zero otherwise.
239 */
240static int
241confirm_overwrite(const char *filename)
242{
243 char yesno[3];
244 struct stat st;
245
246 if (stat(filename, &st) != 0)
247 return 1;
248 printf("%s already exists.\n", filename);
249 printf("Overwrite (y/n)? ");
250 fflush(stdout);
251 if (fgets(yesno, sizeof(yesno), stdin) == NULL)
252 return 0;
253 if (yesno[0] != 'y' && yesno[0] != 'Y')
254 return 0;
255 return 1;
256}
257
Damien Miller58f1baf2011-05-05 14:06:15 +1000258static void
Damien Miller431f66b1999-11-21 18:31:57 +1100259ask_filename(struct passwd *pw, const char *prompt)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000260{
Damien Miller95def091999-11-25 00:26:21 +1100261 char buf[1024];
Damien Millere39cacc2000-11-29 12:18:44 +1100262 char *name = NULL;
263
Damien Miller993dd552002-02-19 15:22:47 +1100264 if (key_type_name == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000265 name = _PATH_SSH_CLIENT_ID_RSA;
Damien Miller90967402006-03-26 14:07:26 +1100266 else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000267 switch (sshkey_type_from_name(key_type_name)) {
Damien Miller4e270b02010-04-16 15:56:21 +1000268 case KEY_DSA_CERT:
Damien Miller993dd552002-02-19 15:22:47 +1100269 case KEY_DSA:
270 name = _PATH_SSH_CLIENT_ID_DSA;
271 break;
Damien Millerdd190dd2010-11-11 14:17:02 +1100272#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000273 case KEY_ECDSA_CERT:
274 case KEY_ECDSA:
275 name = _PATH_SSH_CLIENT_ID_ECDSA;
276 break;
djm@openbsd.org23f38c22019-10-31 21:17:09 +0000277 case KEY_ECDSA_SK_CERT:
278 case KEY_ECDSA_SK:
279 name = _PATH_SSH_CLIENT_ID_ECDSA_SK;
280 break;
Damien Millerdd190dd2010-11-11 14:17:02 +1100281#endif
Damien Miller4e270b02010-04-16 15:56:21 +1000282 case KEY_RSA_CERT:
Damien Miller993dd552002-02-19 15:22:47 +1100283 case KEY_RSA:
284 name = _PATH_SSH_CLIENT_ID_RSA;
285 break;
Damien Miller5be9d9e2013-12-07 11:24:01 +1100286 case KEY_ED25519:
287 case KEY_ED25519_CERT:
288 name = _PATH_SSH_CLIENT_ID_ED25519;
289 break;
markus@openbsd.org2c557442019-11-12 19:33:08 +0000290 case KEY_ED25519_SK:
291 case KEY_ED25519_SK_CERT:
292 name = _PATH_SSH_CLIENT_ID_ED25519_SK;
293 break;
markus@openbsd.org1b11ea72018-02-23 15:58:37 +0000294 case KEY_XMSS:
295 case KEY_XMSS_CERT:
296 name = _PATH_SSH_CLIENT_ID_XMSS;
297 break;
Damien Miller993dd552002-02-19 15:22:47 +1100298 default:
djm@openbsd.org3038a192015-04-17 13:19:22 +0000299 fatal("bad key type");
Damien Miller993dd552002-02-19 15:22:47 +1100300 }
Damien Miller90967402006-03-26 14:07:26 +1100301 }
djm@openbsd.org3038a192015-04-17 13:19:22 +0000302 snprintf(identity_file, sizeof(identity_file),
303 "%s/%s", pw->pw_dir, name);
304 printf("%s (%s): ", prompt, identity_file);
305 fflush(stdout);
Damien Miller95def091999-11-25 00:26:21 +1100306 if (fgets(buf, sizeof(buf), stdin) == NULL)
307 exit(1);
Damien Miller14b017d2007-09-17 16:09:15 +1000308 buf[strcspn(buf, "\n")] = '\0';
Damien Miller95def091999-11-25 00:26:21 +1100309 if (strcmp(buf, "") != 0)
310 strlcpy(identity_file, buf, sizeof(identity_file));
311 have_identity = 1;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100312}
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000313
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000314static struct sshkey *
djm@openbsd.org9a396e32019-09-02 23:46:46 +0000315load_identity(const char *filename, char **commentp)
Damien Millereba71ba2000-04-29 23:57:08 +1000316{
Ben Lindstromd0fca422001-03-26 13:44:06 +0000317 char *pass;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000318 struct sshkey *prv;
319 int r;
Ben Lindstromd0fca422001-03-26 13:44:06 +0000320
djm@openbsd.org07133222019-09-01 23:47:32 +0000321 if (commentp != NULL)
322 *commentp = NULL;
323 if ((r = sshkey_load_private(filename, "", &prv, commentp)) == 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000324 return prv;
325 if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
326 fatal("Load key \"%s\": %s", filename, ssh_err(r));
327 if (identity_passphrase)
328 pass = xstrdup(identity_passphrase);
329 else
330 pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
djm@openbsd.org07133222019-09-01 23:47:32 +0000331 r = sshkey_load_private(filename, pass, &prv, commentp);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000332 explicit_bzero(pass, strlen(pass));
333 free(pass);
334 if (r != 0)
335 fatal("Load key \"%s\": %s", filename, ssh_err(r));
Ben Lindstromd0fca422001-03-26 13:44:06 +0000336 return prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000337}
338
Damien Miller874d77b2000-10-14 16:23:11 +1100339#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
Ben Lindstromcb72e4f2002-06-21 00:41:51 +0000340#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
Damien Miller874d77b2000-10-14 16:23:11 +1100341#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
Kevin Stevesef4eea92001-02-05 12:42:17 +0000342#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
Damien Millereba71ba2000-04-29 23:57:08 +1000343
Damien Miller1f0311c2014-05-15 14:24:09 +1000344#ifdef WITH_OPENSSL
Ben Lindstrombba81212001-06-25 05:01:22 +0000345static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000346do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
Damien Millereba71ba2000-04-29 23:57:08 +1000347{
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000348 struct sshbuf *b;
349 char comment[61], *b64;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000350 int r;
Damien Millereba71ba2000-04-29 23:57:08 +1000351
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000352 if ((b = sshbuf_new()) == NULL)
353 fatal("%s: sshbuf_new failed", __func__);
354 if ((r = sshkey_putb(k, b)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +0000355 fatal("key_to_blob failed: %s", ssh_err(r));
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000356 if ((b64 = sshbuf_dtob64_string(b, 1)) == NULL)
357 fatal("%s: sshbuf_dtob64_string failed", __func__);
358
Darren Tuckerd04758d2010-01-12 19:41:57 +1100359 /* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
360 snprintf(comment, sizeof(comment),
361 "%u-bit %s, converted by %s@%s from OpenSSH",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000362 sshkey_size(k), sshkey_type(k),
Damien Millereba71ba2000-04-29 23:57:08 +1000363 pw->pw_name, hostname);
Darren Tuckerd04758d2010-01-12 19:41:57 +1100364
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000365 sshkey_free(k);
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000366 sshbuf_free(b);
367
368 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
369 fprintf(stdout, "Comment: \"%s\"\n%s", comment, b64);
370 fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
371 free(b64);
Damien Millereba71ba2000-04-29 23:57:08 +1000372 exit(0);
373}
374
Ben Lindstrombba81212001-06-25 05:01:22 +0000375static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000376do_convert_to_pkcs8(struct sshkey *k)
Damien Miller44b25042010-07-02 13:35:01 +1000377{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000378 switch (sshkey_type_plain(k->type)) {
Damien Miller44b25042010-07-02 13:35:01 +1000379 case KEY_RSA:
380 if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
381 fatal("PEM_write_RSA_PUBKEY failed");
382 break;
383 case KEY_DSA:
384 if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
385 fatal("PEM_write_DSA_PUBKEY failed");
386 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000387#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000388 case KEY_ECDSA:
389 if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
390 fatal("PEM_write_EC_PUBKEY failed");
391 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000392#endif
Damien Miller44b25042010-07-02 13:35:01 +1000393 default:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000394 fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000395 }
396 exit(0);
397}
398
399static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000400do_convert_to_pem(struct sshkey *k)
Damien Miller44b25042010-07-02 13:35:01 +1000401{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000402 switch (sshkey_type_plain(k->type)) {
Damien Miller44b25042010-07-02 13:35:01 +1000403 case KEY_RSA:
404 if (!PEM_write_RSAPublicKey(stdout, k->rsa))
405 fatal("PEM_write_RSAPublicKey failed");
406 break;
Damien Miller44b25042010-07-02 13:35:01 +1000407 default:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000408 fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000409 }
410 exit(0);
411}
412
413static void
414do_convert_to(struct passwd *pw)
415{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000416 struct sshkey *k;
Damien Miller44b25042010-07-02 13:35:01 +1000417 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000418 int r;
Damien Miller44b25042010-07-02 13:35:01 +1000419
420 if (!have_identity)
421 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +0000422 if (stat(identity_file, &st) == -1)
Damien Miller44b25042010-07-02 13:35:01 +1000423 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000424 if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
djm@openbsd.org07133222019-09-01 23:47:32 +0000425 k = load_identity(identity_file, NULL);
Damien Miller44b25042010-07-02 13:35:01 +1000426 switch (convert_format) {
427 case FMT_RFC4716:
428 do_convert_to_ssh2(pw, k);
429 break;
430 case FMT_PKCS8:
431 do_convert_to_pkcs8(k);
432 break;
433 case FMT_PEM:
434 do_convert_to_pem(k);
435 break;
436 default:
437 fatal("%s: unknown key format %d", __func__, convert_format);
438 }
439 exit(0);
440}
441
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000442/*
443 * This is almost exactly the bignum1 encoding, but with 32 bit for length
444 * instead of 16.
445 */
Damien Miller44b25042010-07-02 13:35:01 +1000446static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000447buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
Damien Miller874d77b2000-10-14 16:23:11 +1100448{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000449 u_int bytes, bignum_bits;
450 int r;
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000451
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000452 if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
453 fatal("%s: buffer error: %s", __func__, ssh_err(r));
454 bytes = (bignum_bits + 7) / 8;
455 if (sshbuf_len(b) < bytes)
456 fatal("%s: input buffer too small: need %d have %zu",
457 __func__, bytes, sshbuf_len(b));
458 if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
459 fatal("%s: BN_bin2bn failed", __func__);
460 if ((r = sshbuf_consume(b, bytes)) != 0)
461 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller874d77b2000-10-14 16:23:11 +1100462}
463
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000464static struct sshkey *
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000465do_convert_private_ssh2(struct sshbuf *b)
Damien Miller874d77b2000-10-14 16:23:11 +1100466{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000467 struct sshkey *key = NULL;
Damien Miller874d77b2000-10-14 16:23:11 +1100468 char *type, *cipher;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000469 u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
470 int r, rlen, ktype;
471 u_int magic, i1, i2, i3, i4;
472 size_t slen;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000473 u_long e;
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000474 BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
475 BIGNUM *dsa_pub_key = NULL, *dsa_priv_key = NULL;
476 BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL;
477 BIGNUM *rsa_p = NULL, *rsa_q = NULL, *rsa_iqmp = NULL;
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000478
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000479 if ((r = sshbuf_get_u32(b, &magic)) != 0)
480 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller874d77b2000-10-14 16:23:11 +1100481
Damien Miller874d77b2000-10-14 16:23:11 +1100482 if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000483 error("bad magic 0x%x != 0x%x", magic,
484 SSH_COM_PRIVATE_KEY_MAGIC);
Damien Miller874d77b2000-10-14 16:23:11 +1100485 return NULL;
486 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000487 if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
488 (r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
489 (r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
490 (r = sshbuf_get_u32(b, &i2)) != 0 ||
491 (r = sshbuf_get_u32(b, &i3)) != 0 ||
492 (r = sshbuf_get_u32(b, &i4)) != 0)
493 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller80163902007-01-05 16:30:16 +1100494 debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
Damien Miller874d77b2000-10-14 16:23:11 +1100495 if (strcmp(cipher, "none") != 0) {
496 error("unsupported cipher %s", cipher);
Darren Tuckera627d422013-06-02 07:31:17 +1000497 free(cipher);
Darren Tuckera627d422013-06-02 07:31:17 +1000498 free(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100499 return NULL;
500 }
Darren Tuckera627d422013-06-02 07:31:17 +1000501 free(cipher);
Damien Miller874d77b2000-10-14 16:23:11 +1100502
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000503 if (strstr(type, "dsa")) {
504 ktype = KEY_DSA;
505 } else if (strstr(type, "rsa")) {
506 ktype = KEY_RSA;
507 } else {
Darren Tuckera627d422013-06-02 07:31:17 +1000508 free(type);
Damien Miller874d77b2000-10-14 16:23:11 +1100509 return NULL;
510 }
djm@openbsd.org6da046f2018-09-14 04:17:44 +0000511 if ((key = sshkey_new(ktype)) == NULL)
512 fatal("sshkey_new failed");
Darren Tuckera627d422013-06-02 07:31:17 +1000513 free(type);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000514
515 switch (key->type) {
516 case KEY_DSA:
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000517 if ((dsa_p = BN_new()) == NULL ||
518 (dsa_q = BN_new()) == NULL ||
519 (dsa_g = BN_new()) == NULL ||
520 (dsa_pub_key = BN_new()) == NULL ||
521 (dsa_priv_key = BN_new()) == NULL)
522 fatal("%s: BN_new", __func__);
523 buffer_get_bignum_bits(b, dsa_p);
524 buffer_get_bignum_bits(b, dsa_g);
525 buffer_get_bignum_bits(b, dsa_q);
526 buffer_get_bignum_bits(b, dsa_pub_key);
527 buffer_get_bignum_bits(b, dsa_priv_key);
528 if (!DSA_set0_pqg(key->dsa, dsa_p, dsa_q, dsa_g))
529 fatal("%s: DSA_set0_pqg failed", __func__);
530 dsa_p = dsa_q = dsa_g = NULL; /* transferred */
531 if (!DSA_set0_key(key->dsa, dsa_pub_key, dsa_priv_key))
532 fatal("%s: DSA_set0_key failed", __func__);
533 dsa_pub_key = dsa_priv_key = NULL; /* transferred */
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000534 break;
535 case KEY_RSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000536 if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
537 (e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
538 (e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
539 fatal("%s: buffer error: %s", __func__, ssh_err(r));
540 e = e1;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000541 debug("e %lx", e);
542 if (e < 30) {
543 e <<= 8;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000544 e += e2;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000545 debug("e %lx", e);
546 e <<= 8;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000547 e += e3;
Ben Lindstrom34f91882001-06-25 04:47:54 +0000548 debug("e %lx", e);
549 }
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000550 if ((rsa_e = BN_new()) == NULL)
551 fatal("%s: BN_new", __func__);
552 if (!BN_set_word(rsa_e, e)) {
553 BN_clear_free(rsa_e);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000554 sshkey_free(key);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000555 return NULL;
556 }
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000557 if ((rsa_n = BN_new()) == NULL ||
558 (rsa_d = BN_new()) == NULL ||
559 (rsa_p = BN_new()) == NULL ||
560 (rsa_q = BN_new()) == NULL ||
561 (rsa_iqmp = BN_new()) == NULL)
562 fatal("%s: BN_new", __func__);
563 buffer_get_bignum_bits(b, rsa_d);
564 buffer_get_bignum_bits(b, rsa_n);
565 buffer_get_bignum_bits(b, rsa_iqmp);
566 buffer_get_bignum_bits(b, rsa_q);
567 buffer_get_bignum_bits(b, rsa_p);
568 if (!RSA_set0_key(key->rsa, rsa_n, rsa_e, rsa_d))
569 fatal("%s: RSA_set0_key failed", __func__);
570 rsa_n = rsa_e = rsa_d = NULL; /* transferred */
571 if (!RSA_set0_factors(key->rsa, rsa_p, rsa_q))
572 fatal("%s: RSA_set0_factors failed", __func__);
573 rsa_p = rsa_q = NULL; /* transferred */
574 if ((r = ssh_rsa_complete_crt_parameters(key, rsa_iqmp)) != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000575 fatal("generate RSA parameters failed: %s", ssh_err(r));
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000576 BN_clear_free(rsa_iqmp);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000577 break;
578 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000579 rlen = sshbuf_len(b);
Ben Lindstrom1c37c6a2001-12-06 18:00:18 +0000580 if (rlen != 0)
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000581 error("%s: remaining bytes in key blob %d", __func__, rlen);
Ben Lindstromd09fcf52001-03-29 00:29:54 +0000582
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000583 /* try the key */
djm@openbsd.org9a14c642019-10-31 21:23:19 +0000584 if (sshkey_sign(key, &sig, &slen, data, sizeof(data),
585 NULL, NULL, 0) != 0 ||
586 sshkey_verify(key, sig, slen, data, sizeof(data),
587 NULL, 0) != 0) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000588 sshkey_free(key);
589 free(sig);
590 return NULL;
591 }
Darren Tuckera627d422013-06-02 07:31:17 +1000592 free(sig);
Damien Miller874d77b2000-10-14 16:23:11 +1100593 return key;
594}
595
Damien Miller8056a9d2006-03-15 12:05:40 +1100596static int
597get_line(FILE *fp, char *line, size_t len)
598{
599 int c;
600 size_t pos = 0;
601
602 line[0] = '\0';
603 while ((c = fgetc(fp)) != EOF) {
djm@openbsd.org3038a192015-04-17 13:19:22 +0000604 if (pos >= len - 1)
605 fatal("input line too long.");
Damien Miller90967402006-03-26 14:07:26 +1100606 switch (c) {
Damien Miller8056a9d2006-03-15 12:05:40 +1100607 case '\r':
608 c = fgetc(fp);
djm@openbsd.org3038a192015-04-17 13:19:22 +0000609 if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
610 fatal("unget: %s", strerror(errno));
Damien Miller8056a9d2006-03-15 12:05:40 +1100611 return pos;
612 case '\n':
613 return pos;
614 }
615 line[pos++] = c;
616 line[pos] = '\0';
617 }
Damien Miller6c7439f2007-01-05 16:29:55 +1100618 /* We reached EOF */
619 return -1;
Damien Miller8056a9d2006-03-15 12:05:40 +1100620}
621
Ben Lindstrombba81212001-06-25 05:01:22 +0000622static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000623do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
Damien Millereba71ba2000-04-29 23:57:08 +1000624{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000625 int r, blen, escaped = 0;
Ben Lindstrom155b9812002-04-02 20:26:26 +0000626 u_int len;
Damien Miller8056a9d2006-03-15 12:05:40 +1100627 char line[1024];
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000628 struct sshbuf *buf;
Damien Millereba71ba2000-04-29 23:57:08 +1000629 char encoded[8096];
Damien Millereba71ba2000-04-29 23:57:08 +1000630 FILE *fp;
631
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000632 if ((buf = sshbuf_new()) == NULL)
633 fatal("sshbuf_new failed");
Damien Millerba3420a2010-06-26 09:39:07 +1000634 if ((fp = fopen(identity_file, "r")) == NULL)
635 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
Damien Millereba71ba2000-04-29 23:57:08 +1000636 encoded[0] = '\0';
Damien Miller8056a9d2006-03-15 12:05:40 +1100637 while ((blen = get_line(fp, line, sizeof(line))) != -1) {
Damien Miller746d1a62013-07-18 16:13:02 +1000638 if (blen > 0 && line[blen - 1] == '\\')
Damien Miller30c3d422000-05-09 11:02:59 +1000639 escaped++;
Damien Millereba71ba2000-04-29 23:57:08 +1000640 if (strncmp(line, "----", 4) == 0 ||
641 strstr(line, ": ") != NULL) {
Damien Miller874d77b2000-10-14 16:23:11 +1100642 if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
Damien Miller44b25042010-07-02 13:35:01 +1000643 *private = 1;
Ben Lindstrome586c4c2001-06-25 05:04:58 +0000644 if (strstr(line, " END ") != NULL) {
645 break;
646 }
Ben Lindstrom30358602001-04-24 16:59:28 +0000647 /* fprintf(stderr, "ignore: %s", line); */
Damien Millereba71ba2000-04-29 23:57:08 +1000648 continue;
649 }
Damien Miller30c3d422000-05-09 11:02:59 +1000650 if (escaped) {
651 escaped--;
Ben Lindstrom30358602001-04-24 16:59:28 +0000652 /* fprintf(stderr, "escaped: %s", line); */
Damien Miller30c3d422000-05-09 11:02:59 +1000653 continue;
Damien Millereba71ba2000-04-29 23:57:08 +1000654 }
Damien Millereba71ba2000-04-29 23:57:08 +1000655 strlcat(encoded, line, sizeof(encoded));
656 }
Ben Lindstrom155b9812002-04-02 20:26:26 +0000657 len = strlen(encoded);
658 if (((len % 4) == 3) &&
659 (encoded[len-1] == '=') &&
660 (encoded[len-2] == '=') &&
661 (encoded[len-3] == '='))
662 encoded[len-3] = '\0';
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000663 if ((r = sshbuf_b64tod(buf, encoded)) != 0)
664 fatal("%s: base64 decoding failed: %s", __func__, ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000665 if (*private)
djm@openbsd.org16dd8b22019-07-16 13:18:39 +0000666 *k = do_convert_private_ssh2(buf);
667 else if ((r = sshkey_fromb(buf, k)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +0000668 fatal("decode blob failed: %s", ssh_err(r));
djm@openbsd.org6500c3b2019-10-16 06:03:30 +0000669 sshbuf_free(buf);
Damien Miller44b25042010-07-02 13:35:01 +1000670 fclose(fp);
671}
672
673static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000674do_convert_from_pkcs8(struct sshkey **k, int *private)
Damien Miller44b25042010-07-02 13:35:01 +1000675{
676 EVP_PKEY *pubkey;
677 FILE *fp;
678
679 if ((fp = fopen(identity_file, "r")) == NULL)
680 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
681 if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
682 fatal("%s: %s is not a recognised public key format", __func__,
683 identity_file);
684 }
685 fclose(fp);
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000686 switch (EVP_PKEY_base_id(pubkey)) {
Damien Miller44b25042010-07-02 13:35:01 +1000687 case EVP_PKEY_RSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000688 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
689 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000690 (*k)->type = KEY_RSA;
691 (*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
692 break;
693 case EVP_PKEY_DSA:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000694 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
695 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000696 (*k)->type = KEY_DSA;
697 (*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
698 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000699#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000700 case EVP_PKEY_EC:
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000701 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
702 fatal("sshkey_new failed");
Damien Millereb8b60e2010-08-31 22:41:14 +1000703 (*k)->type = KEY_ECDSA;
704 (*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000705 (*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
Damien Millereb8b60e2010-08-31 22:41:14 +1000706 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000707#endif
Damien Miller44b25042010-07-02 13:35:01 +1000708 default:
709 fatal("%s: unsupported pubkey type %d", __func__,
djm@openbsd.org482d23b2018-09-13 02:08:33 +0000710 EVP_PKEY_base_id(pubkey));
Damien Miller44b25042010-07-02 13:35:01 +1000711 }
712 EVP_PKEY_free(pubkey);
713 return;
714}
715
716static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000717do_convert_from_pem(struct sshkey **k, int *private)
Damien Miller44b25042010-07-02 13:35:01 +1000718{
719 FILE *fp;
720 RSA *rsa;
Damien Miller44b25042010-07-02 13:35:01 +1000721
722 if ((fp = fopen(identity_file, "r")) == NULL)
723 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
724 if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000725 if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
726 fatal("sshkey_new failed");
Damien Miller44b25042010-07-02 13:35:01 +1000727 (*k)->type = KEY_RSA;
728 (*k)->rsa = rsa;
729 fclose(fp);
730 return;
731 }
Damien Miller44b25042010-07-02 13:35:01 +1000732 fatal("%s: unrecognised raw private key format", __func__);
733}
734
735static void
736do_convert_from(struct passwd *pw)
737{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000738 struct sshkey *k = NULL;
739 int r, private = 0, ok = 0;
Damien Miller44b25042010-07-02 13:35:01 +1000740 struct stat st;
741
742 if (!have_identity)
743 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +0000744 if (stat(identity_file, &st) == -1)
Damien Miller44b25042010-07-02 13:35:01 +1000745 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
746
747 switch (convert_format) {
748 case FMT_RFC4716:
749 do_convert_from_ssh2(pw, &k, &private);
750 break;
751 case FMT_PKCS8:
752 do_convert_from_pkcs8(&k, &private);
753 break;
754 case FMT_PEM:
755 do_convert_from_pem(&k, &private);
756 break;
757 default:
758 fatal("%s: unknown key format %d", __func__, convert_format);
759 }
760
djm@openbsd.org7a2c3682015-01-30 00:59:19 +0000761 if (!private) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000762 if ((r = sshkey_write(k, stdout)) == 0)
763 ok = 1;
Damien Miller44b25042010-07-02 13:35:01 +1000764 if (ok)
765 fprintf(stdout, "\n");
djm@openbsd.org7a2c3682015-01-30 00:59:19 +0000766 } else {
Damien Miller44b25042010-07-02 13:35:01 +1000767 switch (k->type) {
768 case KEY_DSA:
769 ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
770 NULL, 0, NULL, NULL);
771 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000772#ifdef OPENSSL_HAS_ECC
Damien Millereb8b60e2010-08-31 22:41:14 +1000773 case KEY_ECDSA:
774 ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
775 NULL, 0, NULL, NULL);
776 break;
Damien Miller6af914a2010-09-10 11:39:26 +1000777#endif
Damien Miller44b25042010-07-02 13:35:01 +1000778 case KEY_RSA:
779 ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
780 NULL, 0, NULL, NULL);
781 break;
782 default:
783 fatal("%s: unsupported key type %s", __func__,
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000784 sshkey_type(k));
Damien Miller44b25042010-07-02 13:35:01 +1000785 }
786 }
787
djm@openbsd.org3038a192015-04-17 13:19:22 +0000788 if (!ok)
789 fatal("key write failed");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000790 sshkey_free(k);
Damien Millereba71ba2000-04-29 23:57:08 +1000791 exit(0);
792}
Damien Miller1f0311c2014-05-15 14:24:09 +1000793#endif
Damien Millereba71ba2000-04-29 23:57:08 +1000794
Ben Lindstrombba81212001-06-25 05:01:22 +0000795static void
Damien Millereba71ba2000-04-29 23:57:08 +1000796do_print_public(struct passwd *pw)
797{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000798 struct sshkey *prv;
Damien Millereba71ba2000-04-29 23:57:08 +1000799 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000800 int r;
djm@openbsd.org07133222019-09-01 23:47:32 +0000801 char *comment = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +1000802
803 if (!have_identity)
804 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +0000805 if (stat(identity_file, &st) == -1)
djm@openbsd.org3038a192015-04-17 13:19:22 +0000806 fatal("%s: %s", identity_file, strerror(errno));
djm@openbsd.org07133222019-09-01 23:47:32 +0000807 prv = load_identity(identity_file, &comment);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000808 if ((r = sshkey_write(prv, stdout)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +0000809 error("sshkey_write failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000810 sshkey_free(prv);
djm@openbsd.org07133222019-09-01 23:47:32 +0000811 if (comment != NULL && *comment != '\0')
812 fprintf(stdout, " %s", comment);
Damien Millereba71ba2000-04-29 23:57:08 +1000813 fprintf(stdout, "\n");
djm@openbsd.org07133222019-09-01 23:47:32 +0000814 free(comment);
Damien Millereba71ba2000-04-29 23:57:08 +1000815 exit(0);
816}
817
Ben Lindstromcd392282001-07-04 03:44:03 +0000818static void
Damien Miller757f34e2010-08-05 13:05:31 +1000819do_download(struct passwd *pw)
Ben Lindstromcd392282001-07-04 03:44:03 +0000820{
Damien Miller7ea845e2010-02-12 09:21:02 +1100821#ifdef ENABLE_PKCS11
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000822 struct sshkey **keys = NULL;
Damien Miller7ea845e2010-02-12 09:21:02 +1100823 int i, nkeys;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000824 enum sshkey_fp_rep rep;
djm@openbsd.org56d1c832014-12-21 22:27:55 +0000825 int fptype;
Damien Millerec77c952013-01-09 15:58:00 +1100826 char *fp, *ra;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000827
djm@openbsd.org56d1c832014-12-21 22:27:55 +0000828 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
829 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
Damien Miller1422c082013-01-09 16:44:54 +1100830
benno@openbsd.orga8c807f2019-02-10 16:35:41 +0000831 pkcs11_init(1);
Damien Miller7ea845e2010-02-12 09:21:02 +1100832 nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
833 if (nkeys <= 0)
834 fatal("cannot read public key from pkcs11");
835 for (i = 0; i < nkeys; i++) {
Damien Millerec77c952013-01-09 15:58:00 +1100836 if (print_fingerprint) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000837 fp = sshkey_fingerprint(keys[i], fptype, rep);
838 ra = sshkey_fingerprint(keys[i], fingerprint_hash,
Damien Millerec77c952013-01-09 15:58:00 +1100839 SSH_FP_RANDOMART);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +0000840 if (fp == NULL || ra == NULL)
841 fatal("%s: sshkey_fingerprint fail", __func__);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000842 printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
843 fp, sshkey_type(keys[i]));
djm@openbsd.org851f8032019-01-23 04:16:22 +0000844 if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)
Damien Millerec77c952013-01-09 15:58:00 +1100845 printf("%s\n", ra);
Darren Tuckera627d422013-06-02 07:31:17 +1000846 free(ra);
847 free(fp);
Damien Millerec77c952013-01-09 15:58:00 +1100848 } else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000849 (void) sshkey_write(keys[i], stdout); /* XXX check */
Damien Millerec77c952013-01-09 15:58:00 +1100850 fprintf(stdout, "\n");
851 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +0000852 sshkey_free(keys[i]);
Ben Lindstrom0936a5b2002-03-26 03:17:42 +0000853 }
Darren Tuckera627d422013-06-02 07:31:17 +1000854 free(keys);
Damien Miller7ea845e2010-02-12 09:21:02 +1100855 pkcs11_terminate();
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000856 exit(0);
Damien Miller7ea845e2010-02-12 09:21:02 +1100857#else
858 fatal("no pkcs11 support");
859#endif /* ENABLE_PKCS11 */
Ben Lindstrom8282d6a2001-08-06 21:44:05 +0000860}
Ben Lindstromcd392282001-07-04 03:44:03 +0000861
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000862static struct sshkey *
863try_read_key(char **cpp)
864{
865 struct sshkey *ret;
866 int r;
867
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000868 if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
869 fatal("sshkey_new failed");
870 if ((r = sshkey_read(ret, cpp)) == 0)
871 return ret;
872 /* Not a key */
873 sshkey_free(ret);
874 return NULL;
875}
876
877static void
878fingerprint_one_key(const struct sshkey *public, const char *comment)
879{
880 char *fp = NULL, *ra = NULL;
881 enum sshkey_fp_rep rep;
882 int fptype;
883
884 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
885 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
886 fp = sshkey_fingerprint(public, fptype, rep);
887 ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
888 if (fp == NULL || ra == NULL)
889 fatal("%s: sshkey_fingerprint failed", __func__);
djm@openbsd.orga287c5a2017-02-10 03:36:40 +0000890 mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000891 comment ? comment : "no comment", sshkey_type(public));
djm@openbsd.org851f8032019-01-23 04:16:22 +0000892 if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000893 printf("%s\n", ra);
894 free(ra);
895 free(fp);
896}
897
898static void
899fingerprint_private(const char *path)
900{
901 struct stat st;
902 char *comment = NULL;
903 struct sshkey *public = NULL;
904 int r;
905
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +0000906 if (stat(identity_file, &st) == -1)
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000907 fatal("%s: %s", path, strerror(errno));
djm@openbsd.orgbcb7bc72015-11-18 08:37:28 +0000908 if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
909 debug("load public \"%s\": %s", path, ssh_err(r));
910 if ((r = sshkey_load_private(path, NULL,
911 &public, &comment)) != 0) {
912 debug("load private \"%s\": %s", path, ssh_err(r));
913 fatal("%s is not a key file.", path);
914 }
915 }
916
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000917 fingerprint_one_key(public, comment);
918 sshkey_free(public);
919 free(comment);
920}
921
Ben Lindstrombba81212001-06-25 05:01:22 +0000922static void
Damien Miller10f6f6b1999-11-17 17:29:08 +1100923do_fingerprint(struct passwd *pw)
924{
Damien Miller98c7ad62000-03-09 21:27:49 +1100925 FILE *f;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000926 struct sshkey *public = NULL;
markus@openbsd.org7f906352018-06-06 18:29:18 +0000927 char *comment = NULL, *cp, *ep, *line = NULL;
928 size_t linesize = 0;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000929 int i, invalid = 1;
930 const char *path;
djm@openbsd.org1a31d022016-05-02 08:49:03 +0000931 u_long lnum = 0;
Damien Miller10f6f6b1999-11-17 17:29:08 +1100932
Damien Miller95def091999-11-25 00:26:21 +1100933 if (!have_identity)
934 ask_filename(pw, "Enter file in which the key is");
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000935 path = identity_file;
Damien Miller98c7ad62000-03-09 21:27:49 +1100936
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000937 if (strcmp(identity_file, "-") == 0) {
938 f = stdin;
939 path = "(stdin)";
940 } else if ((f = fopen(path, "r")) == NULL)
941 fatal("%s: %s: %s", __progname, path, strerror(errno));
Damien Miller98c7ad62000-03-09 21:27:49 +1100942
markus@openbsd.org7f906352018-06-06 18:29:18 +0000943 while (getline(&line, &linesize, f) != -1) {
944 lnum++;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000945 cp = line;
946 cp[strcspn(cp, "\n")] = '\0';
947 /* Trim leading space and comments */
948 cp = line + strspn(line, " \t");
949 if (*cp == '#' || *cp == '\0')
950 continue;
951
952 /*
953 * Input may be plain keys, private keys, authorized_keys
954 * or known_hosts.
955 */
956
957 /*
958 * Try private keys first. Assume a key is private if
959 * "SSH PRIVATE KEY" appears on the first line and we're
960 * not reading from stdin (XXX support private keys on stdin).
961 */
962 if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
djm@openbsd.orgbcb7bc72015-11-18 08:37:28 +0000963 strstr(cp, "PRIVATE KEY") != NULL) {
markus@openbsd.org7f906352018-06-06 18:29:18 +0000964 free(line);
djm@openbsd.orgc56a2552015-11-16 22:53:07 +0000965 fclose(f);
966 fingerprint_private(path);
967 exit(0);
968 }
969
970 /*
971 * If it's not a private key, then this must be prepared to
972 * accept a public key prefixed with a hostname or options.
973 * Try a bare key first, otherwise skip the leading stuff.
974 */
975 if ((public = try_read_key(&cp)) == NULL) {
976 i = strtol(cp, &ep, 10);
977 if (i == 0 || ep == NULL ||
978 (*ep != ' ' && *ep != '\t')) {
979 int quoted = 0;
980
981 comment = cp;
982 for (; *cp && (quoted || (*cp != ' ' &&
983 *cp != '\t')); cp++) {
984 if (*cp == '\\' && cp[1] == '"')
985 cp++; /* Skip both */
986 else if (*cp == '"')
987 quoted = !quoted;
988 }
989 if (!*cp)
990 continue;
991 *cp++ = '\0';
992 }
993 }
994 /* Retry after parsing leading hostname/key options */
995 if (public == NULL && (public = try_read_key(&cp)) == NULL) {
djm@openbsd.org1a31d022016-05-02 08:49:03 +0000996 debug("%s:%lu: not a public key", path, lnum);
Damien Millerba3420a2010-06-26 09:39:07 +1000997 continue;
Damien Miller95def091999-11-25 00:26:21 +1100998 }
Damien Millerba3420a2010-06-26 09:39:07 +1000999
djm@openbsd.orgc56a2552015-11-16 22:53:07 +00001000 /* Find trailing comment, if any */
1001 for (; *cp == ' ' || *cp == '\t'; cp++)
Damien Millerba3420a2010-06-26 09:39:07 +10001002 ;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +00001003 if (*cp != '\0' && *cp != '#')
Damien Millerba3420a2010-06-26 09:39:07 +10001004 comment = cp;
djm@openbsd.orgc56a2552015-11-16 22:53:07 +00001005
1006 fingerprint_one_key(public, comment);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001007 sshkey_free(public);
djm@openbsd.orgc56a2552015-11-16 22:53:07 +00001008 invalid = 0; /* One good key in the file is sufficient */
Damien Miller95def091999-11-25 00:26:21 +11001009 }
Damien Millerba3420a2010-06-26 09:39:07 +10001010 fclose(f);
markus@openbsd.org7f906352018-06-06 18:29:18 +00001011 free(line);
Damien Millerba3420a2010-06-26 09:39:07 +10001012
djm@openbsd.org3038a192015-04-17 13:19:22 +00001013 if (invalid)
djm@openbsd.orgc56a2552015-11-16 22:53:07 +00001014 fatal("%s is not a public key file.", path);
Damien Miller95def091999-11-25 00:26:21 +11001015 exit(0);
Damien Miller10f6f6b1999-11-17 17:29:08 +11001016}
1017
Damien Miller4b42d7f2005-03-01 21:48:35 +11001018static void
Damien Miller58f1baf2011-05-05 14:06:15 +10001019do_gen_all_hostkeys(struct passwd *pw)
1020{
1021 struct {
1022 char *key_type;
1023 char *key_type_display;
1024 char *path;
1025 } key_types[] = {
djm@openbsd.org5c27e3b2015-03-23 06:06:38 +00001026#ifdef WITH_OPENSSL
Damien Miller58f1baf2011-05-05 14:06:15 +10001027 { "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
1028 { "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
Damien Millerb56e4932012-02-06 07:41:27 +11001029#ifdef OPENSSL_HAS_ECC
Damien Miller58f1baf2011-05-05 14:06:15 +10001030 { "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
djm@openbsd.org5c27e3b2015-03-23 06:06:38 +00001031#endif /* OPENSSL_HAS_ECC */
1032#endif /* WITH_OPENSSL */
Damien Miller5be9d9e2013-12-07 11:24:01 +11001033 { "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001034#ifdef WITH_XMSS
1035 { "xmss", "XMSS",_PATH_HOST_XMSS_KEY_FILE },
1036#endif /* WITH_XMSS */
Damien Miller58f1baf2011-05-05 14:06:15 +10001037 { NULL, NULL, NULL }
1038 };
1039
dtucker@openbsd.org7afc45c2019-08-08 08:02:57 +00001040 u_int32_t bits = 0;
Damien Miller58f1baf2011-05-05 14:06:15 +10001041 int first = 0;
1042 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001043 struct sshkey *private, *public;
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001044 char comment[1024], *prv_tmp, *pub_tmp, *prv_file, *pub_file;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001045 int i, type, fd, r;
Damien Miller58f1baf2011-05-05 14:06:15 +10001046 FILE *f;
1047
1048 for (i = 0; key_types[i].key_type; i++) {
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001049 public = private = NULL;
1050 prv_tmp = pub_tmp = prv_file = pub_file = NULL;
1051
1052 xasprintf(&prv_file, "%s%s",
1053 identity_file, key_types[i].path);
1054
1055 /* Check whether private key exists and is not zero-length */
1056 if (stat(prv_file, &st) == 0) {
1057 if (st.st_size != 0)
1058 goto next;
1059 } else if (errno != ENOENT) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001060 error("Could not stat %s: %s", key_types[i].path,
Damien Miller58f1baf2011-05-05 14:06:15 +10001061 strerror(errno));
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001062 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001063 }
1064
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001065 /*
1066 * Private key doesn't exist or is invalid; proceed with
1067 * key generation.
1068 */
1069 xasprintf(&prv_tmp, "%s%s.XXXXXXXXXX",
1070 identity_file, key_types[i].path);
1071 xasprintf(&pub_tmp, "%s%s.pub.XXXXXXXXXX",
1072 identity_file, key_types[i].path);
1073 xasprintf(&pub_file, "%s%s.pub",
1074 identity_file, key_types[i].path);
1075
Damien Miller58f1baf2011-05-05 14:06:15 +10001076 if (first == 0) {
1077 first = 1;
1078 printf("%s: generating new host keys: ", __progname);
1079 }
1080 printf("%s ", key_types[i].key_type_display);
1081 fflush(stdout);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001082 type = sshkey_type_from_name(key_types[i].key_type);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001083 if ((fd = mkstemp(prv_tmp)) == -1) {
1084 error("Could not save your public key in %s: %s",
1085 prv_tmp, strerror(errno));
1086 goto failnext;
1087 }
1088 close(fd); /* just using mkstemp() to generate/reserve a name */
Damien Miller58f1baf2011-05-05 14:06:15 +10001089 bits = 0;
djm@openbsd.org7efb4552015-01-18 13:22:28 +00001090 type_bits_valid(type, NULL, &bits);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001091 if ((r = sshkey_generate(type, bits, &private)) != 0) {
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001092 error("sshkey_generate failed: %s", ssh_err(r));
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001093 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001094 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001095 if ((r = sshkey_from_private(private, &public)) != 0)
1096 fatal("sshkey_from_private failed: %s", ssh_err(r));
Damien Miller58f1baf2011-05-05 14:06:15 +10001097 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
1098 hostname);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001099 if ((r = sshkey_save_private(private, prv_tmp, "",
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00001100 comment, private_key_format, openssh_format_cipher,
1101 rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001102 error("Saving key \"%s\" failed: %s",
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001103 prv_tmp, ssh_err(r));
1104 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001105 }
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001106 if ((fd = mkstemp(pub_tmp)) == -1) {
1107 error("Could not save your public key in %s: %s",
1108 pub_tmp, strerror(errno));
1109 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001110 }
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001111 (void)fchmod(fd, 0644);
Damien Miller58f1baf2011-05-05 14:06:15 +10001112 f = fdopen(fd, "w");
1113 if (f == NULL) {
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001114 error("fdopen %s failed: %s", pub_tmp, strerror(errno));
doug@openbsd.org7df88182014-08-21 01:08:52 +00001115 close(fd);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001116 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001117 }
djm@openbsd.orgbb8b4422015-01-16 15:55:07 +00001118 if ((r = sshkey_write(public, f)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001119 error("write key failed: %s", ssh_err(r));
doug@openbsd.org7df88182014-08-21 01:08:52 +00001120 fclose(f);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001121 goto failnext;
Damien Miller58f1baf2011-05-05 14:06:15 +10001122 }
1123 fprintf(f, " %s\n", comment);
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001124 if (ferror(f) != 0) {
1125 error("write key failed: %s", strerror(errno));
1126 fclose(f);
1127 goto failnext;
1128 }
1129 if (fclose(f) != 0) {
1130 error("key close failed: %s", strerror(errno));
1131 goto failnext;
1132 }
Damien Miller58f1baf2011-05-05 14:06:15 +10001133
djm@openbsd.org853edbe2017-07-07 03:53:12 +00001134 /* Rename temporary files to their permanent locations. */
1135 if (rename(pub_tmp, pub_file) != 0) {
1136 error("Unable to move %s into position: %s",
1137 pub_file, strerror(errno));
1138 goto failnext;
1139 }
1140 if (rename(prv_tmp, prv_file) != 0) {
1141 error("Unable to move %s into position: %s",
1142 key_types[i].path, strerror(errno));
1143 failnext:
1144 first = 0;
1145 goto next;
1146 }
1147 next:
1148 sshkey_free(private);
1149 sshkey_free(public);
1150 free(prv_tmp);
1151 free(pub_tmp);
1152 free(prv_file);
1153 free(pub_file);
Damien Miller58f1baf2011-05-05 14:06:15 +10001154 }
1155 if (first != 0)
1156 printf("\n");
1157}
1158
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001159struct known_hosts_ctx {
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001160 const char *host; /* Hostname searched for in find/delete case */
1161 FILE *out; /* Output file, stdout for find_hosts case */
1162 int has_unhashed; /* When hashing, original had unhashed hosts */
1163 int found_key; /* For find/delete, host was found */
1164 int invalid; /* File contained invalid items; don't delete */
djm@openbsd.org851f8032019-01-23 04:16:22 +00001165 int hash_hosts; /* Hash hostnames as we go */
1166 int find_host; /* Search for specific hostname */
1167 int delete_host; /* Delete host from known_hosts */
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001168};
1169
1170static int
1171known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
Damien Miller4b42d7f2005-03-01 21:48:35 +11001172{
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001173 struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
1174 char *hashed, *cp, *hosts, *ohosts;
1175 int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
dtucker@openbsd.org18501152017-03-06 02:03:20 +00001176 int was_hashed = l->hosts && l->hosts[0] == HASH_DELIM;
Darren Tucker0f7e9102008-06-08 12:54:29 +10001177
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001178 switch (l->status) {
1179 case HKF_STATUS_OK:
1180 case HKF_STATUS_MATCHED:
1181 /*
1182 * Don't hash hosts already already hashed, with wildcard
1183 * characters or a CA/revocation marker.
1184 */
djm@openbsd.org12d37672017-03-03 06:13:11 +00001185 if (was_hashed || has_wild || l->marker != MRK_NONE) {
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001186 fprintf(ctx->out, "%s\n", l->line);
djm@openbsd.org851f8032019-01-23 04:16:22 +00001187 if (has_wild && !ctx->find_host) {
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001188 logit("%s:%lu: ignoring host name "
djm@openbsd.org3038a192015-04-17 13:19:22 +00001189 "with wildcard: %.64s", l->path,
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001190 l->linenum, l->hosts);
1191 }
1192 return 0;
1193 }
1194 /*
1195 * Split any comma-separated hostnames from the host list,
1196 * hash and store separately.
1197 */
1198 ohosts = hosts = xstrdup(l->hosts);
1199 while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
djm@openbsd.orgdb259722017-03-10 04:26:06 +00001200 lowercase(cp);
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001201 if ((hashed = host_hash(cp, NULL, 0)) == NULL)
1202 fatal("hash_host failed");
1203 fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
1204 ctx->has_unhashed = 1;
1205 }
1206 free(ohosts);
1207 return 0;
1208 case HKF_STATUS_INVALID:
1209 /* Retain invalid lines, but mark file as invalid. */
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001210 ctx->invalid = 1;
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001211 logit("%s:%lu: invalid line", l->path, l->linenum);
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001212 /* FALLTHROUGH */
1213 default:
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001214 fprintf(ctx->out, "%s\n", l->line);
1215 return 0;
Darren Tucker0f7e9102008-06-08 12:54:29 +10001216 }
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001217 /* NOTREACHED */
1218 return -1;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001219}
1220
1221static int
1222known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
1223{
1224 struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001225 enum sshkey_fp_rep rep;
1226 int fptype;
djm@openbsd.orgbca05822019-07-19 03:38:01 +00001227 char *fp = NULL, *ra = NULL;
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001228
1229 fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
1230 rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001231
djm@openbsd.org6c5c9492015-02-16 22:08:57 +00001232 if (l->status == HKF_STATUS_MATCHED) {
djm@openbsd.org851f8032019-01-23 04:16:22 +00001233 if (ctx->delete_host) {
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001234 if (l->marker != MRK_NONE) {
1235 /* Don't remove CA and revocation lines */
1236 fprintf(ctx->out, "%s\n", l->line);
1237 } else {
1238 /*
1239 * Hostname matches and has no CA/revoke
1240 * marker, delete it by *not* writing the
1241 * line to ctx->out.
1242 */
1243 ctx->found_key = 1;
1244 if (!quiet)
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001245 printf("# Host %s found: line %lu\n",
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001246 ctx->host, l->linenum);
1247 }
1248 return 0;
djm@openbsd.org851f8032019-01-23 04:16:22 +00001249 } else if (ctx->find_host) {
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001250 ctx->found_key = 1;
1251 if (!quiet) {
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001252 printf("# Host %s found: line %lu %s\n",
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001253 ctx->host,
1254 l->linenum, l->marker == MRK_CA ? "CA" :
1255 (l->marker == MRK_REVOKE ? "REVOKED" : ""));
1256 }
djm@openbsd.org851f8032019-01-23 04:16:22 +00001257 if (ctx->hash_hosts)
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001258 known_hosts_hash(l, ctx);
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001259 else if (print_fingerprint) {
1260 fp = sshkey_fingerprint(l->key, fptype, rep);
djm@openbsd.orgbca05822019-07-19 03:38:01 +00001261 ra = sshkey_fingerprint(l->key,
1262 fingerprint_hash, SSH_FP_RANDOMART);
1263 if (fp == NULL || ra == NULL)
1264 fatal("%s: sshkey_fingerprint failed",
1265 __func__);
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00001266 mprintf("%s %s %s %s\n", ctx->host,
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001267 sshkey_type(l->key), fp, l->comment);
djm@openbsd.orgbca05822019-07-19 03:38:01 +00001268 if (log_level_get() >= SYSLOG_LEVEL_VERBOSE)
1269 printf("%s\n", ra);
1270 free(ra);
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001271 free(fp);
1272 } else
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001273 fprintf(ctx->out, "%s\n", l->line);
1274 return 0;
1275 }
djm@openbsd.org851f8032019-01-23 04:16:22 +00001276 } else if (ctx->delete_host) {
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001277 /* Retain non-matching hosts when deleting */
1278 if (l->status == HKF_STATUS_INVALID) {
1279 ctx->invalid = 1;
dtucker@openbsd.orgd0723702017-03-06 00:44:51 +00001280 logit("%s:%lu: invalid line", l->path, l->linenum);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001281 }
1282 fprintf(ctx->out, "%s\n", l->line);
1283 }
1284 return 0;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001285}
1286
1287static void
djm@openbsd.org851f8032019-01-23 04:16:22 +00001288do_known_hosts(struct passwd *pw, const char *name, int find_host,
1289 int delete_host, int hash_hosts)
Damien Miller4b42d7f2005-03-01 21:48:35 +11001290{
deraadt@openbsd.orgd2099de2015-01-19 00:32:54 +00001291 char *cp, tmp[PATH_MAX], old[PATH_MAX];
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001292 int r, fd, oerrno, inplace = 0;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001293 struct known_hosts_ctx ctx;
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001294 u_int foreach_options;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001295
1296 if (!have_identity) {
1297 cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
1298 if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
1299 sizeof(identity_file))
1300 fatal("Specified known hosts path too long");
Darren Tuckera627d422013-06-02 07:31:17 +10001301 free(cp);
Damien Miller4b42d7f2005-03-01 21:48:35 +11001302 have_identity = 1;
1303 }
Damien Miller4b42d7f2005-03-01 21:48:35 +11001304
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001305 memset(&ctx, 0, sizeof(ctx));
1306 ctx.out = stdout;
1307 ctx.host = name;
djm@openbsd.org851f8032019-01-23 04:16:22 +00001308 ctx.hash_hosts = hash_hosts;
1309 ctx.find_host = find_host;
1310 ctx.delete_host = delete_host;
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001311
Damien Miller4b42d7f2005-03-01 21:48:35 +11001312 /*
1313 * Find hosts goes to stdout, hash and deletions happen in-place
1314 * A corner case is ssh-keygen -HF foo, which should go to stdout
1315 */
1316 if (!find_host && (hash_hosts || delete_host)) {
1317 if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
1318 strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
1319 strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
1320 strlcat(old, ".old", sizeof(old)) >= sizeof(old))
1321 fatal("known_hosts path too long");
1322 umask(077);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001323 if ((fd = mkstemp(tmp)) == -1)
Damien Miller4b42d7f2005-03-01 21:48:35 +11001324 fatal("mkstemp: %s", strerror(errno));
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001325 if ((ctx.out = fdopen(fd, "w")) == NULL) {
1326 oerrno = errno;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001327 unlink(tmp);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001328 fatal("fdopen: %s", strerror(oerrno));
Damien Miller4b42d7f2005-03-01 21:48:35 +11001329 }
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001330 inplace = 1;
Damien Miller4b42d7f2005-03-01 21:48:35 +11001331 }
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001332 /* XXX support identity_file == "-" for stdin */
djm@openbsd.org4739e8d2015-05-21 12:01:19 +00001333 foreach_options = find_host ? HKF_WANT_MATCH : 0;
1334 foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
djm@openbsd.org01b048c2018-06-01 04:21:29 +00001335 if ((r = hostkeys_foreach(identity_file, (find_host || !hash_hosts) ?
djm@openbsd.org3e088aa2018-06-01 03:51:34 +00001336 known_hosts_find_delete : known_hosts_hash, &ctx, name, NULL,
1337 foreach_options)) != 0) {
deraadt@openbsd.org6da413c2015-11-28 06:50:52 +00001338 if (inplace)
1339 unlink(tmp);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001340 fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
deraadt@openbsd.org6da413c2015-11-28 06:50:52 +00001341 }
Damien Miller4b42d7f2005-03-01 21:48:35 +11001342
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001343 if (inplace)
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001344 fclose(ctx.out);
Damien Miller0a80ca12010-02-27 07:55:05 +11001345
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001346 if (ctx.invalid) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001347 error("%s is not a valid known_hosts file.", identity_file);
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001348 if (inplace) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001349 error("Not replacing existing known_hosts "
1350 "file because of errors");
Damien Miller4b42d7f2005-03-01 21:48:35 +11001351 unlink(tmp);
1352 }
1353 exit(1);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001354 } else if (delete_host && !ctx.found_key) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001355 logit("Host %s not found in %s", name, identity_file);
djm@openbsd.orgc8376432015-08-19 23:17:51 +00001356 if (inplace)
1357 unlink(tmp);
djm@openbsd.org2b3c3c72015-01-18 21:51:19 +00001358 } else if (inplace) {
Damien Miller4b42d7f2005-03-01 21:48:35 +11001359 /* Backup existing file */
1360 if (unlink(old) == -1 && errno != ENOENT)
1361 fatal("unlink %.100s: %s", old, strerror(errno));
1362 if (link(identity_file, old) == -1)
1363 fatal("link %.100s to %.100s: %s", identity_file, old,
1364 strerror(errno));
1365 /* Move new one into place */
1366 if (rename(tmp, identity_file) == -1) {
1367 error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
1368 strerror(errno));
1369 unlink(tmp);
1370 unlink(old);
1371 exit(1);
1372 }
1373
djm@openbsd.org3038a192015-04-17 13:19:22 +00001374 printf("%s updated.\n", identity_file);
1375 printf("Original contents retained as %s\n", old);
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001376 if (ctx.has_unhashed) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001377 logit("WARNING: %s contains unhashed entries", old);
1378 logit("Delete this file to ensure privacy "
1379 "of hostnames");
Damien Miller4b42d7f2005-03-01 21:48:35 +11001380 }
1381 }
1382
djm@openbsd.orgcecb30b2015-01-18 21:49:42 +00001383 exit (find_host && !ctx.found_key);
Damien Miller4b42d7f2005-03-01 21:48:35 +11001384}
1385
Damien Miller95def091999-11-25 00:26:21 +11001386/*
1387 * Perform changing a passphrase. The argument is the passwd structure
1388 * for the current user.
1389 */
Ben Lindstrombba81212001-06-25 05:01:22 +00001390static void
Damien Miller10f6f6b1999-11-17 17:29:08 +11001391do_change_passphrase(struct passwd *pw)
1392{
Damien Miller95def091999-11-25 00:26:21 +11001393 char *comment;
1394 char *old_passphrase, *passphrase1, *passphrase2;
1395 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001396 struct sshkey *private;
1397 int r;
Damien Miller10f6f6b1999-11-17 17:29:08 +11001398
Damien Miller95def091999-11-25 00:26:21 +11001399 if (!have_identity)
1400 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00001401 if (stat(identity_file, &st) == -1)
djm@openbsd.org3038a192015-04-17 13:19:22 +00001402 fatal("%s: %s", identity_file, strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +11001403 /* Try to load the file with empty passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001404 r = sshkey_load_private(identity_file, "", &private, &comment);
1405 if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
Damien Miller95def091999-11-25 00:26:21 +11001406 if (identity_passphrase)
1407 old_passphrase = xstrdup(identity_passphrase);
1408 else
Ben Lindstrom949974b2001-06-25 05:20:31 +00001409 old_passphrase =
1410 read_passphrase("Enter old passphrase: ",
1411 RP_ALLOW_STDIN);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001412 r = sshkey_load_private(identity_file, old_passphrase,
1413 &private, &comment);
Damien Millera5103f42014-02-04 11:20:14 +11001414 explicit_bzero(old_passphrase, strlen(old_passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001415 free(old_passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001416 if (r != 0)
1417 goto badkey;
1418 } else if (r != 0) {
1419 badkey:
djm@openbsd.org3038a192015-04-17 13:19:22 +00001420 fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11001421 }
djm@openbsd.orgf43d1722015-02-26 20:45:47 +00001422 if (comment)
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00001423 mprintf("Key has comment '%s'\n", comment);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001424
Damien Miller95def091999-11-25 00:26:21 +11001425 /* Ask the new passphrase (twice). */
1426 if (identity_new_passphrase) {
1427 passphrase1 = xstrdup(identity_new_passphrase);
1428 passphrase2 = NULL;
1429 } else {
1430 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +00001431 read_passphrase("Enter new passphrase (empty for no "
1432 "passphrase): ", RP_ALLOW_STDIN);
1433 passphrase2 = read_passphrase("Enter same passphrase again: ",
Damien Miller9f0f5c62001-12-21 14:45:46 +11001434 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11001435
1436 /* Verify that they are the same. */
1437 if (strcmp(passphrase1, passphrase2) != 0) {
Damien Millera5103f42014-02-04 11:20:14 +11001438 explicit_bzero(passphrase1, strlen(passphrase1));
1439 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10001440 free(passphrase1);
1441 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11001442 printf("Pass phrases do not match. Try again.\n");
1443 exit(1);
1444 }
1445 /* Destroy the other copy. */
Damien Millera5103f42014-02-04 11:20:14 +11001446 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10001447 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11001448 }
1449
1450 /* Save the file using the new passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001451 if ((r = sshkey_save_private(private, identity_file, passphrase1,
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00001452 comment, private_key_format, openssh_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001453 error("Saving key \"%s\" failed: %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001454 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11001455 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10001456 free(passphrase1);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001457 sshkey_free(private);
Darren Tuckera627d422013-06-02 07:31:17 +10001458 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001459 exit(1);
1460 }
1461 /* Destroy the passphrase and the copy of the key in memory. */
Damien Millera5103f42014-02-04 11:20:14 +11001462 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10001463 free(passphrase1);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001464 sshkey_free(private); /* Destroys contents */
Darren Tuckera627d422013-06-02 07:31:17 +10001465 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001466
1467 printf("Your identification has been saved with the new passphrase.\n");
1468 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001469}
1470
Damien Miller37876e92003-05-15 10:19:46 +10001471/*
1472 * Print the SSHFP RR.
1473 */
Damien Millercb314822006-03-26 13:48:01 +11001474static int
djm@openbsd.org851f8032019-01-23 04:16:22 +00001475do_print_resource_record(struct passwd *pw, char *fname, char *hname,
1476 int print_generic)
Damien Miller37876e92003-05-15 10:19:46 +10001477{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001478 struct sshkey *public;
Damien Miller37876e92003-05-15 10:19:46 +10001479 char *comment = NULL;
1480 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001481 int r;
Damien Miller37876e92003-05-15 10:19:46 +10001482
Damien Millercb314822006-03-26 13:48:01 +11001483 if (fname == NULL)
Damien Miller5bb88332013-07-18 16:13:37 +10001484 fatal("%s: no filename", __func__);
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00001485 if (stat(fname, &st) == -1) {
Damien Millercb314822006-03-26 13:48:01 +11001486 if (errno == ENOENT)
1487 return 0;
djm@openbsd.org3038a192015-04-17 13:19:22 +00001488 fatal("%s: %s", fname, strerror(errno));
Damien Miller37876e92003-05-15 10:19:46 +10001489 }
djm@openbsd.org3038a192015-04-17 13:19:22 +00001490 if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
1491 fatal("Failed to read v2 public key from \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001492 fname, ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001493 export_dns_rr(hname, public, stdout, print_generic);
1494 sshkey_free(public);
1495 free(comment);
1496 return 1;
Damien Miller37876e92003-05-15 10:19:46 +10001497}
Damien Miller37876e92003-05-15 10:19:46 +10001498
Damien Miller95def091999-11-25 00:26:21 +11001499/*
1500 * Change the comment of a private key file.
1501 */
Ben Lindstrombba81212001-06-25 05:01:22 +00001502static void
djm@openbsd.org851f8032019-01-23 04:16:22 +00001503do_change_comment(struct passwd *pw, const char *identity_comment)
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001504{
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001505 char new_comment[1024], *comment, *passphrase;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001506 struct sshkey *private;
1507 struct sshkey *public;
Damien Miller95def091999-11-25 00:26:21 +11001508 struct stat st;
1509 FILE *f;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001510 int r, fd;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001511
Damien Miller95def091999-11-25 00:26:21 +11001512 if (!have_identity)
1513 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00001514 if (stat(identity_file, &st) == -1)
djm@openbsd.org3038a192015-04-17 13:19:22 +00001515 fatal("%s: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001516 if ((r = sshkey_load_private(identity_file, "",
1517 &private, &comment)) == 0)
1518 passphrase = xstrdup("");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001519 else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
1520 fatal("Cannot load private key \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001521 identity_file, ssh_err(r));
djm@openbsd.org3038a192015-04-17 13:19:22 +00001522 else {
Damien Miller95def091999-11-25 00:26:21 +11001523 if (identity_passphrase)
1524 passphrase = xstrdup(identity_passphrase);
1525 else if (identity_new_passphrase)
1526 passphrase = xstrdup(identity_new_passphrase);
1527 else
Ben Lindstrom949974b2001-06-25 05:20:31 +00001528 passphrase = read_passphrase("Enter passphrase: ",
1529 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11001530 /* Try to load using the passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001531 if ((r = sshkey_load_private(identity_file, passphrase,
1532 &private, &comment)) != 0) {
Damien Millera5103f42014-02-04 11:20:14 +11001533 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001534 free(passphrase);
djm@openbsd.org3038a192015-04-17 13:19:22 +00001535 fatal("Cannot load private key \"%s\": %s.",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001536 identity_file, ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11001537 }
1538 }
halex@openbsd.org4d906252015-11-20 23:04:01 +00001539
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001540 if (private->type != KEY_ED25519 && private->type != KEY_XMSS &&
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00001541 private_key_format != SSHKEY_PRIVATE_OPENSSH) {
djm@openbsd.org873d3e72017-04-30 23:18:44 +00001542 error("Comments are only supported for keys stored in "
halex@openbsd.org4d906252015-11-20 23:04:01 +00001543 "the new format (-o).");
tobias@openbsd.org704d8c82015-03-31 11:06:49 +00001544 explicit_bzero(passphrase, strlen(passphrase));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001545 sshkey_free(private);
Ben Lindstromd0fca422001-03-26 13:44:06 +00001546 exit(1);
Damien Miller9f0f5c62001-12-21 14:45:46 +11001547 }
millert@openbsd.orge40269b2017-02-08 20:32:43 +00001548 if (comment)
lum@openbsd.org410b2312019-05-29 08:30:26 +00001549 printf("Old comment: %s\n", comment);
millert@openbsd.orge40269b2017-02-08 20:32:43 +00001550 else
lum@openbsd.org410b2312019-05-29 08:30:26 +00001551 printf("No existing comment\n");
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001552
Damien Miller95def091999-11-25 00:26:21 +11001553 if (identity_comment) {
1554 strlcpy(new_comment, identity_comment, sizeof(new_comment));
1555 } else {
lum@openbsd.org410b2312019-05-29 08:30:26 +00001556 printf("New comment: ");
Damien Miller95def091999-11-25 00:26:21 +11001557 fflush(stdout);
1558 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
Damien Millera5103f42014-02-04 11:20:14 +11001559 explicit_bzero(passphrase, strlen(passphrase));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001560 sshkey_free(private);
Damien Miller95def091999-11-25 00:26:21 +11001561 exit(1);
1562 }
Damien Miller14b017d2007-09-17 16:09:15 +10001563 new_comment[strcspn(new_comment, "\n")] = '\0';
Damien Miller95def091999-11-25 00:26:21 +11001564 }
lum@openbsd.org410b2312019-05-29 08:30:26 +00001565 if (comment != NULL && strcmp(comment, new_comment) == 0) {
1566 printf("No change to comment\n");
1567 free(passphrase);
1568 sshkey_free(private);
1569 free(comment);
1570 exit(0);
1571 }
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001572
Damien Miller95def091999-11-25 00:26:21 +11001573 /* Save the file using the new passphrase. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001574 if ((r = sshkey_save_private(private, identity_file, passphrase,
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00001575 new_comment, private_key_format, openssh_format_cipher,
1576 rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00001577 error("Saving key \"%s\" failed: %s",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001578 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11001579 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001580 free(passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001581 sshkey_free(private);
Darren Tuckera627d422013-06-02 07:31:17 +10001582 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001583 exit(1);
1584 }
Damien Millera5103f42014-02-04 11:20:14 +11001585 explicit_bzero(passphrase, strlen(passphrase));
Darren Tuckera627d422013-06-02 07:31:17 +10001586 free(passphrase);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001587 if ((r = sshkey_from_private(private, &public)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001588 fatal("sshkey_from_private failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001589 sshkey_free(private);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001590
Damien Miller95def091999-11-25 00:26:21 +11001591 strlcat(identity_file, ".pub", sizeof(identity_file));
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001592 fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
djm@openbsd.org3038a192015-04-17 13:19:22 +00001593 if (fd == -1)
1594 fatal("Could not save your public key in %s", identity_file);
Ben Lindstrom5fc62702001-03-09 18:19:24 +00001595 f = fdopen(fd, "w");
djm@openbsd.org3038a192015-04-17 13:19:22 +00001596 if (f == NULL)
1597 fatal("fdopen %s failed: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001598 if ((r = sshkey_write(public, f)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +00001599 fatal("write key failed: %s", ssh_err(r));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001600 sshkey_free(public);
Damien Millereba71ba2000-04-29 23:57:08 +10001601 fprintf(f, " %s\n", new_comment);
Damien Miller95def091999-11-25 00:26:21 +11001602 fclose(f);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001603
Darren Tuckera627d422013-06-02 07:31:17 +10001604 free(comment);
Damien Miller95def091999-11-25 00:26:21 +11001605
lum@openbsd.org410b2312019-05-29 08:30:26 +00001606 if (strlen(new_comment) > 0)
1607 printf("Comment '%s' applied\n", new_comment);
1608 else
1609 printf("Comment removed\n");
1610
Damien Miller95def091999-11-25 00:26:21 +11001611 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001612}
1613
Damien Miller0a80ca12010-02-27 07:55:05 +11001614static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001615add_flag_option(struct sshbuf *c, const char *name)
Damien Miller0a80ca12010-02-27 07:55:05 +11001616{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001617 int r;
1618
Damien Miller0a80ca12010-02-27 07:55:05 +11001619 debug3("%s: %s", __func__, name);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001620 if ((r = sshbuf_put_cstring(c, name)) != 0 ||
1621 (r = sshbuf_put_string(c, NULL, 0)) != 0)
1622 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001623}
1624
1625static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001626add_string_option(struct sshbuf *c, const char *name, const char *value)
Damien Miller0a80ca12010-02-27 07:55:05 +11001627{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001628 struct sshbuf *b;
1629 int r;
Damien Miller0a80ca12010-02-27 07:55:05 +11001630
1631 debug3("%s: %s=%s", __func__, name, value);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001632 if ((b = sshbuf_new()) == NULL)
1633 fatal("%s: sshbuf_new failed", __func__);
1634 if ((r = sshbuf_put_cstring(b, value)) != 0 ||
1635 (r = sshbuf_put_cstring(c, name)) != 0 ||
1636 (r = sshbuf_put_stringb(c, b)) != 0)
1637 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001638
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001639 sshbuf_free(b);
Damien Miller0a80ca12010-02-27 07:55:05 +11001640}
1641
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001642#define OPTIONS_CRITICAL 1
1643#define OPTIONS_EXTENSIONS 2
Damien Miller0a80ca12010-02-27 07:55:05 +11001644static void
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001645prepare_options_buf(struct sshbuf *c, int which)
Damien Miller0a80ca12010-02-27 07:55:05 +11001646{
djm@openbsd.org249516e2017-04-29 04:12:25 +00001647 size_t i;
1648
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001649 sshbuf_reset(c);
Damien Miller1da63882010-08-05 13:03:51 +10001650 if ((which & OPTIONS_CRITICAL) != 0 &&
1651 certflags_command != NULL)
1652 add_string_option(c, "force-command", certflags_command);
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001653 if ((which & OPTIONS_EXTENSIONS) != 0 &&
Damien Miller2ce12ef2011-05-05 14:17:18 +10001654 (certflags_flags & CERTOPT_X_FWD) != 0)
1655 add_flag_option(c, "permit-X11-forwarding");
1656 if ((which & OPTIONS_EXTENSIONS) != 0 &&
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001657 (certflags_flags & CERTOPT_AGENT_FWD) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001658 add_flag_option(c, "permit-agent-forwarding");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001659 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1660 (certflags_flags & CERTOPT_PORT_FWD) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001661 add_flag_option(c, "permit-port-forwarding");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001662 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1663 (certflags_flags & CERTOPT_PTY) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001664 add_flag_option(c, "permit-pty");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001665 if ((which & OPTIONS_EXTENSIONS) != 0 &&
1666 (certflags_flags & CERTOPT_USER_RC) != 0)
Damien Miller4e270b02010-04-16 15:56:21 +10001667 add_flag_option(c, "permit-user-rc");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001668 if ((which & OPTIONS_CRITICAL) != 0 &&
1669 certflags_src_addr != NULL)
1670 add_string_option(c, "source-address", certflags_src_addr);
djm@openbsd.org249516e2017-04-29 04:12:25 +00001671 for (i = 0; i < ncert_userext; i++) {
1672 if ((cert_userext[i].crit && (which & OPTIONS_EXTENSIONS)) ||
1673 (!cert_userext[i].crit && (which & OPTIONS_CRITICAL)))
1674 continue;
1675 if (cert_userext[i].val == NULL)
1676 add_flag_option(c, cert_userext[i].key);
1677 else {
1678 add_string_option(c, cert_userext[i].key,
1679 cert_userext[i].val);
1680 }
1681 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001682}
1683
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001684static struct sshkey *
Damien Miller757f34e2010-08-05 13:05:31 +10001685load_pkcs11_key(char *path)
1686{
1687#ifdef ENABLE_PKCS11
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001688 struct sshkey **keys = NULL, *public, *private = NULL;
1689 int r, i, nkeys;
Damien Miller757f34e2010-08-05 13:05:31 +10001690
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001691 if ((r = sshkey_load_public(path, &public, NULL)) != 0)
1692 fatal("Couldn't load CA public key \"%s\": %s",
1693 path, ssh_err(r));
Damien Miller757f34e2010-08-05 13:05:31 +10001694
1695 nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
1696 debug3("%s: %d keys", __func__, nkeys);
1697 if (nkeys <= 0)
1698 fatal("cannot read public key from pkcs11");
1699 for (i = 0; i < nkeys; i++) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001700 if (sshkey_equal_public(public, keys[i])) {
Damien Miller757f34e2010-08-05 13:05:31 +10001701 private = keys[i];
1702 continue;
1703 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001704 sshkey_free(keys[i]);
Damien Miller757f34e2010-08-05 13:05:31 +10001705 }
Darren Tuckera627d422013-06-02 07:31:17 +10001706 free(keys);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001707 sshkey_free(public);
Damien Miller757f34e2010-08-05 13:05:31 +10001708 return private;
1709#else
1710 fatal("no pkcs11 support");
1711#endif /* ENABLE_PKCS11 */
1712}
1713
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001714/* Signer for sshkey_certify_custom that uses the agent */
1715static int
djm@openbsd.org4f7a56d2019-06-21 04:21:04 +00001716agent_signer(struct sshkey *key, u_char **sigp, size_t *lenp,
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001717 const u_char *data, size_t datalen,
djm@openbsd.orgb923a902019-10-31 21:28:27 +00001718 const char *alg, const char *provider, u_int compat, void *ctx)
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001719{
1720 int *agent_fdp = (int *)ctx;
1721
1722 return ssh_agent_sign(*agent_fdp, key, sigp, lenp,
1723 data, datalen, alg, compat);
1724}
1725
Damien Miller0a80ca12010-02-27 07:55:05 +11001726static void
djm@openbsd.org851f8032019-01-23 04:16:22 +00001727do_ca_sign(struct passwd *pw, const char *ca_key_path, int prefer_agent,
djm@openbsd.orgbe063942019-01-23 04:51:02 +00001728 unsigned long long cert_serial, int cert_serial_autoinc,
1729 int argc, char **argv)
Damien Miller0a80ca12010-02-27 07:55:05 +11001730{
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001731 int r, i, fd, found, agent_fd = -1;
Damien Miller0a80ca12010-02-27 07:55:05 +11001732 u_int n;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001733 struct sshkey *ca, *public;
djm@openbsd.org499cf362015-11-19 01:08:55 +00001734 char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
Damien Miller0a80ca12010-02-27 07:55:05 +11001735 FILE *f;
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001736 struct ssh_identitylist *agent_ids;
1737 size_t j;
Damien Miller4e270b02010-04-16 15:56:21 +10001738
Damien Miller1f0311c2014-05-15 14:24:09 +10001739#ifdef ENABLE_PKCS11
Damien Miller757f34e2010-08-05 13:05:31 +10001740 pkcs11_init(1);
Damien Miller1f0311c2014-05-15 14:24:09 +10001741#endif
Damien Miller757f34e2010-08-05 13:05:31 +10001742 tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
1743 if (pkcs11provider != NULL) {
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001744 /* If a PKCS#11 token was specified then try to use it */
Damien Miller757f34e2010-08-05 13:05:31 +10001745 if ((ca = load_pkcs11_key(tmp)) == NULL)
1746 fatal("No PKCS#11 key matching %s found", ca_key_path);
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001747 } else if (prefer_agent) {
1748 /*
1749 * Agent signature requested. Try to use agent after making
1750 * sure the public key specified is actually present in the
1751 * agent.
1752 */
1753 if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
1754 fatal("Cannot load CA public key %s: %s",
1755 tmp, ssh_err(r));
1756 if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)
1757 fatal("Cannot use public key for CA signature: %s",
1758 ssh_err(r));
1759 if ((r = ssh_fetch_identitylist(agent_fd, &agent_ids)) != 0)
1760 fatal("Retrieve agent key list: %s", ssh_err(r));
1761 found = 0;
1762 for (j = 0; j < agent_ids->nkeys; j++) {
1763 if (sshkey_equal(ca, agent_ids->keys[j])) {
1764 found = 1;
1765 break;
1766 }
1767 }
1768 if (!found)
1769 fatal("CA key %s not found in agent", tmp);
1770 ssh_free_identitylist(agent_ids);
1771 ca->flags |= SSHKEY_FLAG_EXT;
1772 } else {
1773 /* CA key is assumed to be a private key on the filesystem */
djm@openbsd.org07133222019-09-01 23:47:32 +00001774 ca = load_identity(tmp, NULL);
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001775 }
Darren Tuckera627d422013-06-02 07:31:17 +10001776 free(tmp);
Damien Miller757f34e2010-08-05 13:05:31 +10001777
djm@openbsd.org57464e32016-05-02 09:36:42 +00001778 if (key_type_name != NULL &&
1779 sshkey_type_from_name(key_type_name) != ca->type) {
1780 fatal("CA key type %s doesn't match specified %s",
1781 sshkey_ssh_name(ca), key_type_name);
1782 }
1783
Damien Miller0a80ca12010-02-27 07:55:05 +11001784 for (i = 0; i < argc; i++) {
1785 /* Split list of principals */
1786 n = 0;
1787 if (cert_principals != NULL) {
1788 otmp = tmp = xstrdup(cert_principals);
1789 plist = NULL;
1790 for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
deraadt@openbsd.org657a5fb2015-04-24 01:36:00 +00001791 plist = xreallocarray(plist, n + 1, sizeof(*plist));
Damien Miller0a80ca12010-02-27 07:55:05 +11001792 if (*(plist[n] = xstrdup(cp)) == '\0')
1793 fatal("Empty principal name");
1794 }
Darren Tuckera627d422013-06-02 07:31:17 +10001795 free(otmp);
Damien Miller0a80ca12010-02-27 07:55:05 +11001796 }
djm@openbsd.orgca613242018-02-10 05:48:46 +00001797 if (n > SSHKEY_CERT_MAX_PRINCIPALS)
1798 fatal("Too many certificate principals specified");
djm@openbsd.org16dd8b22019-07-16 13:18:39 +00001799
Damien Miller0a80ca12010-02-27 07:55:05 +11001800 tmp = tilde_expand_filename(argv[i], pw->pw_uid);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001801 if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
1802 fatal("%s: unable to open \"%s\": %s",
1803 __func__, tmp, ssh_err(r));
Damien Millereb8b60e2010-08-31 22:41:14 +10001804 if (public->type != KEY_RSA && public->type != KEY_DSA &&
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00001805 public->type != KEY_ECDSA && public->type != KEY_ED25519 &&
1806 public->type != KEY_XMSS)
Damien Miller0a80ca12010-02-27 07:55:05 +11001807 fatal("%s: key \"%s\" type %s cannot be certified",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001808 __func__, tmp, sshkey_type(public));
Damien Miller0a80ca12010-02-27 07:55:05 +11001809
1810 /* Prepare certificate to sign */
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001811 if ((r = sshkey_to_certified(public)) != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001812 fatal("Could not upgrade key %s to certificate: %s",
1813 tmp, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001814 public->cert->type = cert_key_type;
Damien Miller4e270b02010-04-16 15:56:21 +10001815 public->cert->serial = (u_int64_t)cert_serial;
Damien Miller0a80ca12010-02-27 07:55:05 +11001816 public->cert->key_id = xstrdup(cert_key_id);
1817 public->cert->nprincipals = n;
1818 public->cert->principals = plist;
1819 public->cert->valid_after = cert_valid_from;
1820 public->cert->valid_before = cert_valid_to;
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00001821 prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
1822 prepare_options_buf(public->cert->extensions,
1823 OPTIONS_EXTENSIONS);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001824 if ((r = sshkey_from_private(ca,
1825 &public->cert->signature_key)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00001826 fatal("sshkey_from_private (ca key): %s", ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001827
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001828 if (agent_fd != -1 && (ca->flags & SSHKEY_FLAG_EXT) != 0) {
1829 if ((r = sshkey_certify_custom(public, ca,
djm@openbsd.org9a14c642019-10-31 21:23:19 +00001830 key_type_name, sk_provider, agent_signer,
1831 &agent_fd)) != 0)
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001832 fatal("Couldn't certify key %s via agent: %s",
1833 tmp, ssh_err(r));
1834 } else {
djm@openbsd.org9a14c642019-10-31 21:23:19 +00001835 if ((sshkey_certify(public, ca, key_type_name,
1836 sk_provider)) != 0)
djm@openbsd.orga98339e2017-06-28 01:09:22 +00001837 fatal("Couldn't certify key %s: %s",
1838 tmp, ssh_err(r));
1839 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001840
1841 if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
1842 *cp = '\0';
1843 xasprintf(&out, "%s-cert.pub", tmp);
Darren Tuckera627d422013-06-02 07:31:17 +10001844 free(tmp);
Damien Miller0a80ca12010-02-27 07:55:05 +11001845
1846 if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
1847 fatal("Could not open \"%s\" for writing: %s", out,
1848 strerror(errno));
1849 if ((f = fdopen(fd, "w")) == NULL)
1850 fatal("%s: fdopen: %s", __func__, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001851 if ((r = sshkey_write(public, f)) != 0)
1852 fatal("Could not write certified key to %s: %s",
1853 out, ssh_err(r));
Damien Miller0a80ca12010-02-27 07:55:05 +11001854 fprintf(f, " %s\n", comment);
1855 fclose(f);
1856
Damien Miller4e270b02010-04-16 15:56:21 +10001857 if (!quiet) {
djm@openbsd.org964ab3e2015-11-19 01:12:32 +00001858 sshkey_format_cert_validity(public->cert,
djm@openbsd.org499cf362015-11-19 01:08:55 +00001859 valid, sizeof(valid));
Damien Miller4e270b02010-04-16 15:56:21 +10001860 logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
djm@openbsd.org964ab3e2015-11-19 01:12:32 +00001861 "valid %s", sshkey_cert_type(public),
Damien Miller821de0a2011-01-11 17:20:29 +11001862 out, public->cert->key_id,
1863 (unsigned long long)public->cert->serial,
Damien Miller0a80ca12010-02-27 07:55:05 +11001864 cert_principals != NULL ? " for " : "",
1865 cert_principals != NULL ? cert_principals : "",
djm@openbsd.org499cf362015-11-19 01:08:55 +00001866 valid);
Damien Miller4e270b02010-04-16 15:56:21 +10001867 }
Damien Miller0a80ca12010-02-27 07:55:05 +11001868
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00001869 sshkey_free(public);
Darren Tuckera627d422013-06-02 07:31:17 +10001870 free(out);
djm@openbsd.orgbe063942019-01-23 04:51:02 +00001871 if (cert_serial_autoinc)
1872 cert_serial++;
Damien Miller0a80ca12010-02-27 07:55:05 +11001873 }
Damien Miller1f0311c2014-05-15 14:24:09 +10001874#ifdef ENABLE_PKCS11
Damien Miller757f34e2010-08-05 13:05:31 +10001875 pkcs11_terminate();
Damien Miller1f0311c2014-05-15 14:24:09 +10001876#endif
Damien Miller0a80ca12010-02-27 07:55:05 +11001877 exit(0);
1878}
1879
1880static u_int64_t
1881parse_relative_time(const char *s, time_t now)
1882{
1883 int64_t mul, secs;
1884
1885 mul = *s == '-' ? -1 : 1;
1886
1887 if ((secs = convtime(s + 1)) == -1)
1888 fatal("Invalid relative certificate time %s", s);
1889 if (mul == -1 && secs > now)
1890 fatal("Certificate time %s cannot be represented", s);
1891 return now + (u_int64_t)(secs * mul);
1892}
1893
Damien Miller0a80ca12010-02-27 07:55:05 +11001894static void
1895parse_cert_times(char *timespec)
1896{
1897 char *from, *to;
1898 time_t now = time(NULL);
1899 int64_t secs;
1900
1901 /* +timespec relative to now */
1902 if (*timespec == '+' && strchr(timespec, ':') == NULL) {
1903 if ((secs = convtime(timespec + 1)) == -1)
1904 fatal("Invalid relative certificate life %s", timespec);
1905 cert_valid_to = now + secs;
1906 /*
1907 * Backdate certificate one minute to avoid problems on hosts
1908 * with poorly-synchronised clocks.
1909 */
1910 cert_valid_from = ((now - 59)/ 60) * 60;
1911 return;
1912 }
1913
1914 /*
1915 * from:to, where
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001916 * from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "always"
1917 * to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS | "forever"
Damien Miller0a80ca12010-02-27 07:55:05 +11001918 */
1919 from = xstrdup(timespec);
1920 to = strchr(from, ':');
1921 if (to == NULL || from == to || *(to + 1) == '\0')
Damien Miller910f2092010-03-04 14:17:22 +11001922 fatal("Invalid certificate life specification %s", timespec);
Damien Miller0a80ca12010-02-27 07:55:05 +11001923 *to++ = '\0';
1924
1925 if (*from == '-' || *from == '+')
1926 cert_valid_from = parse_relative_time(from, now);
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001927 else if (strcmp(from, "always") == 0)
1928 cert_valid_from = 0;
djm@openbsd.orgbf0fbf22018-03-12 00:52:01 +00001929 else if (parse_absolute_time(from, &cert_valid_from) != 0)
1930 fatal("Invalid from time \"%s\"", from);
Damien Miller0a80ca12010-02-27 07:55:05 +11001931
1932 if (*to == '-' || *to == '+')
Damien Miller5b01b0d2013-10-23 16:31:31 +11001933 cert_valid_to = parse_relative_time(to, now);
djm@openbsd.org@openbsd.orgd52131a2017-11-03 05:14:04 +00001934 else if (strcmp(to, "forever") == 0)
1935 cert_valid_to = ~(u_int64_t)0;
djm@openbsd.orgbf0fbf22018-03-12 00:52:01 +00001936 else if (parse_absolute_time(to, &cert_valid_to) != 0)
1937 fatal("Invalid to time \"%s\"", to);
Damien Miller0a80ca12010-02-27 07:55:05 +11001938
1939 if (cert_valid_to <= cert_valid_from)
1940 fatal("Empty certificate validity interval");
Darren Tuckera627d422013-06-02 07:31:17 +10001941 free(from);
Damien Miller0a80ca12010-02-27 07:55:05 +11001942}
1943
1944static void
Damien Miller4e270b02010-04-16 15:56:21 +10001945add_cert_option(char *opt)
Damien Miller0a80ca12010-02-27 07:55:05 +11001946{
djm@openbsd.org249516e2017-04-29 04:12:25 +00001947 char *val, *cp;
1948 int iscrit = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11001949
Damien Miller044f4a62011-05-05 14:14:08 +10001950 if (strcasecmp(opt, "clear") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001951 certflags_flags = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11001952 else if (strcasecmp(opt, "no-x11-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001953 certflags_flags &= ~CERTOPT_X_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001954 else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001955 certflags_flags |= CERTOPT_X_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001956 else if (strcasecmp(opt, "no-agent-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001957 certflags_flags &= ~CERTOPT_AGENT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001958 else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001959 certflags_flags |= CERTOPT_AGENT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001960 else if (strcasecmp(opt, "no-port-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001961 certflags_flags &= ~CERTOPT_PORT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001962 else if (strcasecmp(opt, "permit-port-forwarding") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001963 certflags_flags |= CERTOPT_PORT_FWD;
Damien Miller0a80ca12010-02-27 07:55:05 +11001964 else if (strcasecmp(opt, "no-pty") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001965 certflags_flags &= ~CERTOPT_PTY;
Damien Miller0a80ca12010-02-27 07:55:05 +11001966 else if (strcasecmp(opt, "permit-pty") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001967 certflags_flags |= CERTOPT_PTY;
Damien Miller0a80ca12010-02-27 07:55:05 +11001968 else if (strcasecmp(opt, "no-user-rc") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001969 certflags_flags &= ~CERTOPT_USER_RC;
Damien Miller0a80ca12010-02-27 07:55:05 +11001970 else if (strcasecmp(opt, "permit-user-rc") == 0)
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001971 certflags_flags |= CERTOPT_USER_RC;
Damien Miller0a80ca12010-02-27 07:55:05 +11001972 else if (strncasecmp(opt, "force-command=", 14) == 0) {
1973 val = opt + 14;
1974 if (*val == '\0')
Damien Miller4e270b02010-04-16 15:56:21 +10001975 fatal("Empty force-command option");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001976 if (certflags_command != NULL)
Damien Miller0a80ca12010-02-27 07:55:05 +11001977 fatal("force-command already specified");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001978 certflags_command = xstrdup(val);
Damien Miller0a80ca12010-02-27 07:55:05 +11001979 } else if (strncasecmp(opt, "source-address=", 15) == 0) {
1980 val = opt + 15;
1981 if (*val == '\0')
Damien Miller4e270b02010-04-16 15:56:21 +10001982 fatal("Empty source-address option");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001983 if (certflags_src_addr != NULL)
Damien Miller0a80ca12010-02-27 07:55:05 +11001984 fatal("source-address already specified");
1985 if (addr_match_cidr_list(NULL, val) != 0)
1986 fatal("Invalid source-address list");
Damien Millerd0e4a8e2010-05-21 14:58:32 +10001987 certflags_src_addr = xstrdup(val);
djm@openbsd.org249516e2017-04-29 04:12:25 +00001988 } else if (strncasecmp(opt, "extension:", 10) == 0 ||
1989 (iscrit = (strncasecmp(opt, "critical:", 9) == 0))) {
1990 val = xstrdup(strchr(opt, ':') + 1);
1991 if ((cp = strchr(val, '=')) != NULL)
1992 *cp++ = '\0';
1993 cert_userext = xreallocarray(cert_userext, ncert_userext + 1,
1994 sizeof(*cert_userext));
1995 cert_userext[ncert_userext].key = val;
1996 cert_userext[ncert_userext].val = cp == NULL ?
1997 NULL : xstrdup(cp);
1998 cert_userext[ncert_userext].crit = iscrit;
1999 ncert_userext++;
Damien Miller0a80ca12010-02-27 07:55:05 +11002000 } else
Damien Miller4e270b02010-04-16 15:56:21 +10002001 fatal("Unsupported certificate option \"%s\"", opt);
Damien Miller0a80ca12010-02-27 07:55:05 +11002002}
2003
Ben Lindstrombba81212001-06-25 05:01:22 +00002004static void
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002005show_options(struct sshbuf *optbuf, int in_critical)
Damien Millerd834d352010-06-26 09:48:02 +10002006{
Damien Miller633de332014-05-15 13:48:26 +10002007 char *name, *arg;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002008 struct sshbuf *options, *option = NULL;
2009 int r;
Damien Millerd834d352010-06-26 09:48:02 +10002010
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002011 if ((options = sshbuf_fromb(optbuf)) == NULL)
2012 fatal("%s: sshbuf_fromb failed", __func__);
2013 while (sshbuf_len(options) != 0) {
2014 sshbuf_free(option);
2015 option = NULL;
2016 if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
2017 (r = sshbuf_froms(options, &option)) != 0)
2018 fatal("%s: buffer error: %s", __func__, ssh_err(r));
Damien Millerd834d352010-06-26 09:48:02 +10002019 printf(" %s", name);
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002020 if (!in_critical &&
Damien Millerd834d352010-06-26 09:48:02 +10002021 (strcmp(name, "permit-X11-forwarding") == 0 ||
2022 strcmp(name, "permit-agent-forwarding") == 0 ||
2023 strcmp(name, "permit-port-forwarding") == 0 ||
2024 strcmp(name, "permit-pty") == 0 ||
2025 strcmp(name, "permit-user-rc") == 0))
2026 printf("\n");
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002027 else if (in_critical &&
Damien Millerd834d352010-06-26 09:48:02 +10002028 (strcmp(name, "force-command") == 0 ||
2029 strcmp(name, "source-address") == 0)) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002030 if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
2031 fatal("%s: buffer error: %s",
2032 __func__, ssh_err(r));
Damien Miller633de332014-05-15 13:48:26 +10002033 printf(" %s\n", arg);
2034 free(arg);
Damien Millerd834d352010-06-26 09:48:02 +10002035 } else {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002036 printf(" UNKNOWN OPTION (len %zu)\n",
2037 sshbuf_len(option));
2038 sshbuf_reset(option);
Damien Millerd834d352010-06-26 09:48:02 +10002039 }
Darren Tuckera627d422013-06-02 07:31:17 +10002040 free(name);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002041 if (sshbuf_len(option) != 0)
Damien Millerd834d352010-06-26 09:48:02 +10002042 fatal("Option corrupt: extra data at end");
2043 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002044 sshbuf_free(option);
2045 sshbuf_free(options);
Damien Millerd834d352010-06-26 09:48:02 +10002046}
2047
2048static void
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002049print_cert(struct sshkey *key)
Damien Millerf2b70ca2010-03-05 07:39:35 +11002050{
djm@openbsd.org499cf362015-11-19 01:08:55 +00002051 char valid[64], *key_fp, *ca_fp;
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002052 u_int i;
Damien Miller4e270b02010-04-16 15:56:21 +10002053
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002054 key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
2055 ca_fp = sshkey_fingerprint(key->cert->signature_key,
djm@openbsd.org56d1c832014-12-21 22:27:55 +00002056 fingerprint_hash, SSH_FP_DEFAULT);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00002057 if (key_fp == NULL || ca_fp == NULL)
2058 fatal("%s: sshkey_fingerprint fail", __func__);
djm@openbsd.org499cf362015-11-19 01:08:55 +00002059 sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
Damien Millerf2b70ca2010-03-05 07:39:35 +11002060
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002061 printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
2062 sshkey_cert_type(key));
2063 printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
djm@openbsd.orga4fc2532018-10-19 03:12:42 +00002064 printf(" Signing CA: %s %s (using %s)\n",
2065 sshkey_type(key->cert->signature_key), ca_fp,
2066 key->cert->signature_type);
Damien Miller4e270b02010-04-16 15:56:21 +10002067 printf(" Key ID: \"%s\"\n", key->cert->key_id);
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002068 printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
djm@openbsd.org499cf362015-11-19 01:08:55 +00002069 printf(" Valid: %s\n", valid);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002070 printf(" Principals: ");
2071 if (key->cert->nprincipals == 0)
2072 printf("(none)\n");
2073 else {
2074 for (i = 0; i < key->cert->nprincipals; i++)
2075 printf("\n %s",
2076 key->cert->principals[i]);
2077 printf("\n");
2078 }
Damien Miller4e270b02010-04-16 15:56:21 +10002079 printf(" Critical Options: ");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002080 if (sshbuf_len(key->cert->critical) == 0)
Damien Millerf2b70ca2010-03-05 07:39:35 +11002081 printf("(none)\n");
2082 else {
2083 printf("\n");
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002084 show_options(key->cert->critical, 1);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002085 }
djm@openbsd.orgc28fc622015-07-03 03:43:18 +00002086 printf(" Extensions: ");
2087 if (sshbuf_len(key->cert->extensions) == 0)
2088 printf("(none)\n");
2089 else {
2090 printf("\n");
2091 show_options(key->cert->extensions, 0);
Damien Miller4e270b02010-04-16 15:56:21 +10002092 }
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002093}
2094
2095static void
2096do_show_cert(struct passwd *pw)
2097{
2098 struct sshkey *key = NULL;
2099 struct stat st;
2100 int r, is_stdin = 0, ok = 0;
2101 FILE *f;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002102 char *cp, *line = NULL;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002103 const char *path;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002104 size_t linesize = 0;
djm@openbsd.org1a31d022016-05-02 08:49:03 +00002105 u_long lnum = 0;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002106
2107 if (!have_identity)
2108 ask_filename(pw, "Enter file in which the key is");
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00002109 if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) == -1)
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002110 fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
2111
2112 path = identity_file;
2113 if (strcmp(path, "-") == 0) {
2114 f = stdin;
2115 path = "(stdin)";
2116 is_stdin = 1;
2117 } else if ((f = fopen(identity_file, "r")) == NULL)
2118 fatal("fopen %s: %s", identity_file, strerror(errno));
2119
markus@openbsd.org7f906352018-06-06 18:29:18 +00002120 while (getline(&line, &linesize, f) != -1) {
2121 lnum++;
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002122 sshkey_free(key);
2123 key = NULL;
2124 /* Trim leading space and comments */
2125 cp = line + strspn(line, " \t");
2126 if (*cp == '#' || *cp == '\0')
2127 continue;
2128 if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002129 fatal("sshkey_new");
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002130 if ((r = sshkey_read(key, &cp)) != 0) {
2131 error("%s:%lu: invalid key: %s", path,
2132 lnum, ssh_err(r));
2133 continue;
2134 }
2135 if (!sshkey_is_cert(key)) {
2136 error("%s:%lu is not a certificate", path, lnum);
2137 continue;
2138 }
2139 ok = 1;
2140 if (!is_stdin && lnum == 1)
2141 printf("%s:\n", path);
2142 else
2143 printf("%s:%lu:\n", path, lnum);
2144 print_cert(key);
2145 }
markus@openbsd.org7f906352018-06-06 18:29:18 +00002146 free(line);
djm@openbsd.org94bc0b72015-11-13 04:34:15 +00002147 sshkey_free(key);
2148 fclose(f);
2149 exit(ok ? 0 : 1);
Damien Millerf2b70ca2010-03-05 07:39:35 +11002150}
2151
2152static void
Damien Millerf3747bf2013-01-18 11:44:04 +11002153load_krl(const char *path, struct ssh_krl **krlp)
2154{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002155 struct sshbuf *krlbuf;
2156 int r, fd;
Damien Millerf3747bf2013-01-18 11:44:04 +11002157
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002158 if ((krlbuf = sshbuf_new()) == NULL)
2159 fatal("sshbuf_new failed");
Damien Millerf3747bf2013-01-18 11:44:04 +11002160 if ((fd = open(path, O_RDONLY)) == -1)
2161 fatal("open %s: %s", path, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002162 if ((r = sshkey_load_file(fd, krlbuf)) != 0)
2163 fatal("Unable to load KRL: %s", ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002164 close(fd);
2165 /* XXX check sigs */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002166 if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
Damien Millerf3747bf2013-01-18 11:44:04 +11002167 *krlp == NULL)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002168 fatal("Invalid KRL file: %s", ssh_err(r));
2169 sshbuf_free(krlbuf);
Damien Millerf3747bf2013-01-18 11:44:04 +11002170}
2171
2172static void
djm@openbsd.org9405c622018-09-12 01:21:34 +00002173hash_to_blob(const char *cp, u_char **blobp, size_t *lenp,
2174 const char *file, u_long lnum)
2175{
2176 char *tmp;
2177 size_t tlen;
2178 struct sshbuf *b;
2179 int r;
2180
2181 if (strncmp(cp, "SHA256:", 7) != 0)
2182 fatal("%s:%lu: unsupported hash algorithm", file, lnum);
2183 cp += 7;
2184
2185 /*
2186 * OpenSSH base64 hashes omit trailing '='
2187 * characters; put them back for decode.
2188 */
2189 tlen = strlen(cp);
2190 tmp = xmalloc(tlen + 4 + 1);
2191 strlcpy(tmp, cp, tlen + 1);
2192 while ((tlen % 4) != 0) {
2193 tmp[tlen++] = '=';
2194 tmp[tlen] = '\0';
2195 }
2196 if ((b = sshbuf_new()) == NULL)
2197 fatal("%s: sshbuf_new failed", __func__);
2198 if ((r = sshbuf_b64tod(b, tmp)) != 0)
2199 fatal("%s:%lu: decode hash failed: %s", file, lnum, ssh_err(r));
2200 free(tmp);
2201 *lenp = sshbuf_len(b);
2202 *blobp = xmalloc(*lenp);
2203 memcpy(*blobp, sshbuf_ptr(b), *lenp);
2204 sshbuf_free(b);
2205}
2206
2207static void
djm@openbsd.org669aee92015-01-30 01:10:33 +00002208update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002209 const struct sshkey *ca, struct ssh_krl *krl)
Damien Millerf3747bf2013-01-18 11:44:04 +11002210{
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002211 struct sshkey *key = NULL;
Damien Millerf3747bf2013-01-18 11:44:04 +11002212 u_long lnum = 0;
markus@openbsd.org7f906352018-06-06 18:29:18 +00002213 char *path, *cp, *ep, *line = NULL;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002214 u_char *blob = NULL;
2215 size_t blen = 0, linesize = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002216 unsigned long long serial, serial2;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002217 int i, was_explicit_key, was_sha1, was_sha256, was_hash, r;
Damien Millerf3747bf2013-01-18 11:44:04 +11002218 FILE *krl_spec;
2219
2220 path = tilde_expand_filename(file, pw->pw_uid);
2221 if (strcmp(path, "-") == 0) {
2222 krl_spec = stdin;
2223 free(path);
2224 path = xstrdup("(standard input)");
2225 } else if ((krl_spec = fopen(path, "r")) == NULL)
2226 fatal("fopen %s: %s", path, strerror(errno));
2227
2228 if (!quiet)
2229 printf("Revoking from %s\n", path);
markus@openbsd.org7f906352018-06-06 18:29:18 +00002230 while (getline(&line, &linesize, krl_spec) != -1) {
2231 lnum++;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002232 was_explicit_key = was_sha1 = was_sha256 = was_hash = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002233 cp = line + strspn(line, " \t");
2234 /* Trim trailing space, comments and strip \n */
2235 for (i = 0, r = -1; cp[i] != '\0'; i++) {
2236 if (cp[i] == '#' || cp[i] == '\n') {
2237 cp[i] = '\0';
2238 break;
2239 }
2240 if (cp[i] == ' ' || cp[i] == '\t') {
2241 /* Remember the start of a span of whitespace */
2242 if (r == -1)
2243 r = i;
2244 } else
2245 r = -1;
2246 }
2247 if (r != -1)
2248 cp[r] = '\0';
2249 if (*cp == '\0')
2250 continue;
2251 if (strncasecmp(cp, "serial:", 7) == 0) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002252 if (ca == NULL && !wild_ca) {
Damien Millerd234afb2013-08-21 02:42:58 +10002253 fatal("revoking certificates by serial number "
Damien Millerf3747bf2013-01-18 11:44:04 +11002254 "requires specification of a CA key");
2255 }
2256 cp += 7;
2257 cp = cp + strspn(cp, " \t");
2258 errno = 0;
2259 serial = strtoull(cp, &ep, 0);
2260 if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
2261 fatal("%s:%lu: invalid serial \"%s\"",
2262 path, lnum, cp);
2263 if (errno == ERANGE && serial == ULLONG_MAX)
2264 fatal("%s:%lu: serial out of range",
2265 path, lnum);
2266 serial2 = serial;
2267 if (*ep == '-') {
2268 cp = ep + 1;
2269 errno = 0;
2270 serial2 = strtoull(cp, &ep, 0);
2271 if (*cp == '\0' || *ep != '\0')
2272 fatal("%s:%lu: invalid serial \"%s\"",
2273 path, lnum, cp);
2274 if (errno == ERANGE && serial2 == ULLONG_MAX)
2275 fatal("%s:%lu: serial out of range",
2276 path, lnum);
2277 if (serial2 <= serial)
2278 fatal("%s:%lu: invalid serial range "
2279 "%llu:%llu", path, lnum,
2280 (unsigned long long)serial,
2281 (unsigned long long)serial2);
2282 }
2283 if (ssh_krl_revoke_cert_by_serial_range(krl,
2284 ca, serial, serial2) != 0) {
2285 fatal("%s: revoke serial failed",
2286 __func__);
2287 }
2288 } else if (strncasecmp(cp, "id:", 3) == 0) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002289 if (ca == NULL && !wild_ca) {
Damien Millerd5d9d7b2013-08-21 02:43:27 +10002290 fatal("revoking certificates by key ID "
Damien Millerf3747bf2013-01-18 11:44:04 +11002291 "requires specification of a CA key");
2292 }
2293 cp += 3;
2294 cp = cp + strspn(cp, " \t");
2295 if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
2296 fatal("%s: revoke key ID failed", __func__);
djm@openbsd.org9405c622018-09-12 01:21:34 +00002297 } else if (strncasecmp(cp, "hash:", 5) == 0) {
2298 cp += 5;
2299 cp = cp + strspn(cp, " \t");
2300 hash_to_blob(cp, &blob, &blen, file, lnum);
2301 r = ssh_krl_revoke_key_sha256(krl, blob, blen);
Damien Millerf3747bf2013-01-18 11:44:04 +11002302 } else {
2303 if (strncasecmp(cp, "key:", 4) == 0) {
2304 cp += 4;
2305 cp = cp + strspn(cp, " \t");
2306 was_explicit_key = 1;
2307 } else if (strncasecmp(cp, "sha1:", 5) == 0) {
2308 cp += 5;
2309 cp = cp + strspn(cp, " \t");
2310 was_sha1 = 1;
djm@openbsd.org9405c622018-09-12 01:21:34 +00002311 } else if (strncasecmp(cp, "sha256:", 7) == 0) {
2312 cp += 7;
2313 cp = cp + strspn(cp, " \t");
2314 was_sha256 = 1;
Damien Millerf3747bf2013-01-18 11:44:04 +11002315 /*
2316 * Just try to process the line as a key.
2317 * Parsing will fail if it isn't.
2318 */
2319 }
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002320 if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00002321 fatal("sshkey_new");
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002322 if ((r = sshkey_read(key, &cp)) != 0)
2323 fatal("%s:%lu: invalid key: %s",
2324 path, lnum, ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002325 if (was_explicit_key)
2326 r = ssh_krl_revoke_key_explicit(krl, key);
djm@openbsd.org9405c622018-09-12 01:21:34 +00002327 else if (was_sha1) {
2328 if (sshkey_fingerprint_raw(key,
2329 SSH_DIGEST_SHA1, &blob, &blen) != 0) {
2330 fatal("%s:%lu: fingerprint failed",
2331 file, lnum);
2332 }
2333 r = ssh_krl_revoke_key_sha1(krl, blob, blen);
2334 } else if (was_sha256) {
2335 if (sshkey_fingerprint_raw(key,
2336 SSH_DIGEST_SHA256, &blob, &blen) != 0) {
2337 fatal("%s:%lu: fingerprint failed",
2338 file, lnum);
2339 }
2340 r = ssh_krl_revoke_key_sha256(krl, blob, blen);
2341 } else
Damien Millerf3747bf2013-01-18 11:44:04 +11002342 r = ssh_krl_revoke_key(krl, key);
2343 if (r != 0)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002344 fatal("%s: revoke key failed: %s",
2345 __func__, ssh_err(r));
djm@openbsd.org9405c622018-09-12 01:21:34 +00002346 freezero(blob, blen);
2347 blob = NULL;
2348 blen = 0;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002349 sshkey_free(key);
Damien Millerf3747bf2013-01-18 11:44:04 +11002350 }
2351 }
2352 if (strcmp(path, "-") != 0)
2353 fclose(krl_spec);
markus@openbsd.org7f906352018-06-06 18:29:18 +00002354 free(line);
Damien Miller0d6771b2013-04-23 15:23:24 +10002355 free(path);
Damien Millerf3747bf2013-01-18 11:44:04 +11002356}
2357
2358static void
djm@openbsd.org851f8032019-01-23 04:16:22 +00002359do_gen_krl(struct passwd *pw, int updating, const char *ca_key_path,
2360 unsigned long long krl_version, const char *krl_comment,
2361 int argc, char **argv)
Damien Millerf3747bf2013-01-18 11:44:04 +11002362{
2363 struct ssh_krl *krl;
2364 struct stat sb;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002365 struct sshkey *ca = NULL;
djm@openbsd.org669aee92015-01-30 01:10:33 +00002366 int fd, i, r, wild_ca = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002367 char *tmp;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002368 struct sshbuf *kbuf;
Damien Millerf3747bf2013-01-18 11:44:04 +11002369
2370 if (*identity_file == '\0')
2371 fatal("KRL generation requires an output file");
2372 if (stat(identity_file, &sb) == -1) {
2373 if (errno != ENOENT)
2374 fatal("Cannot access KRL \"%s\": %s",
2375 identity_file, strerror(errno));
2376 if (updating)
2377 fatal("KRL \"%s\" does not exist", identity_file);
2378 }
2379 if (ca_key_path != NULL) {
djm@openbsd.org669aee92015-01-30 01:10:33 +00002380 if (strcasecmp(ca_key_path, "none") == 0)
2381 wild_ca = 1;
2382 else {
2383 tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
2384 if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
2385 fatal("Cannot load CA public key %s: %s",
2386 tmp, ssh_err(r));
2387 free(tmp);
2388 }
Damien Millerf3747bf2013-01-18 11:44:04 +11002389 }
2390
2391 if (updating)
2392 load_krl(identity_file, &krl);
2393 else if ((krl = ssh_krl_init()) == NULL)
2394 fatal("couldn't create KRL");
2395
djm@openbsd.org851f8032019-01-23 04:16:22 +00002396 if (krl_version != 0)
2397 ssh_krl_set_version(krl, krl_version);
2398 if (krl_comment != NULL)
2399 ssh_krl_set_comment(krl, krl_comment);
Damien Millerf3747bf2013-01-18 11:44:04 +11002400
2401 for (i = 0; i < argc; i++)
djm@openbsd.org669aee92015-01-30 01:10:33 +00002402 update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
Damien Millerf3747bf2013-01-18 11:44:04 +11002403
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002404 if ((kbuf = sshbuf_new()) == NULL)
2405 fatal("sshbuf_new failed");
2406 if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
Damien Millerf3747bf2013-01-18 11:44:04 +11002407 fatal("Couldn't generate KRL");
2408 if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
2409 fatal("open %s: %s", identity_file, strerror(errno));
markus@openbsd.org49f47e62018-07-09 21:59:10 +00002410 if (atomicio(vwrite, fd, sshbuf_mutable_ptr(kbuf), sshbuf_len(kbuf)) !=
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002411 sshbuf_len(kbuf))
Damien Millerf3747bf2013-01-18 11:44:04 +11002412 fatal("write %s: %s", identity_file, strerror(errno));
2413 close(fd);
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002414 sshbuf_free(kbuf);
Damien Millerf3747bf2013-01-18 11:44:04 +11002415 ssh_krl_free(krl);
mmcc@openbsd.org89540b62015-12-11 02:31:47 +00002416 sshkey_free(ca);
Damien Millerf3747bf2013-01-18 11:44:04 +11002417}
2418
2419static void
2420do_check_krl(struct passwd *pw, int argc, char **argv)
2421{
2422 int i, r, ret = 0;
2423 char *comment;
2424 struct ssh_krl *krl;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002425 struct sshkey *k;
Damien Millerf3747bf2013-01-18 11:44:04 +11002426
2427 if (*identity_file == '\0')
2428 fatal("KRL checking requires an input file");
2429 load_krl(identity_file, &krl);
2430 for (i = 0; i < argc; i++) {
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002431 if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
2432 fatal("Cannot load public key %s: %s",
2433 argv[i], ssh_err(r));
Damien Millerf3747bf2013-01-18 11:44:04 +11002434 r = ssh_krl_check_key(krl, k);
2435 printf("%s%s%s%s: %s\n", argv[i],
2436 *comment ? " (" : "", comment, *comment ? ")" : "",
2437 r == 0 ? "ok" : "REVOKED");
2438 if (r != 0)
2439 ret = 1;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002440 sshkey_free(k);
Damien Millerf3747bf2013-01-18 11:44:04 +11002441 free(comment);
2442 }
2443 ssh_krl_free(krl);
2444 exit(ret);
2445}
2446
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002447static struct sshkey *
2448load_sign_key(const char *keypath, const struct sshkey *pubkey)
2449{
2450 size_t i, slen, plen = strlen(keypath);
2451 char *privpath = xstrdup(keypath);
2452 const char *suffixes[] = { "-cert.pub", ".pub", NULL };
2453 struct sshkey *ret = NULL, *privkey = NULL;
2454 int r;
2455
2456 /*
2457 * If passed a public key filename, then try to locate the correponding
2458 * private key. This lets us specify certificates on the command-line
2459 * and have ssh-keygen find the appropriate private key.
2460 */
2461 for (i = 0; suffixes[i]; i++) {
2462 slen = strlen(suffixes[i]);
2463 if (plen <= slen ||
2464 strcmp(privpath + plen - slen, suffixes[i]) != 0)
2465 continue;
2466 privpath[plen - slen] = '\0';
2467 debug("%s: %s looks like a public key, using private key "
2468 "path %s instead", __func__, keypath, privpath);
2469 }
2470 if ((privkey = load_identity(privpath, NULL)) == NULL) {
2471 error("Couldn't load identity %s", keypath);
2472 goto done;
2473 }
2474 if (!sshkey_equal_public(pubkey, privkey)) {
2475 error("Public key %s doesn't match private %s",
2476 keypath, privpath);
2477 goto done;
2478 }
2479 if (sshkey_is_cert(pubkey) && !sshkey_is_cert(privkey)) {
2480 /*
2481 * Graft the certificate onto the private key to make
2482 * it capable of signing.
2483 */
2484 if ((r = sshkey_to_certified(privkey)) != 0) {
2485 error("%s: sshkey_to_certified: %s", __func__,
2486 ssh_err(r));
2487 goto done;
2488 }
2489 if ((r = sshkey_cert_copy(pubkey, privkey)) != 0) {
2490 error("%s: sshkey_cert_copy: %s", __func__, ssh_err(r));
2491 goto done;
2492 }
2493 }
2494 /* success */
2495 ret = privkey;
2496 privkey = NULL;
2497 done:
2498 sshkey_free(privkey);
2499 free(privpath);
2500 return ret;
2501}
2502
2503static int
2504sign_one(struct sshkey *signkey, const char *filename, int fd,
2505 const char *sig_namespace, sshsig_signer *signer, void *signer_ctx)
2506{
2507 struct sshbuf *sigbuf = NULL, *abuf = NULL;
2508 int r = SSH_ERR_INTERNAL_ERROR, wfd = -1, oerrno;
2509 char *wfile = NULL;
2510 char *asig = NULL;
2511
2512 if (!quiet) {
2513 if (fd == STDIN_FILENO)
2514 fprintf(stderr, "Signing data on standard input\n");
2515 else
2516 fprintf(stderr, "Signing file %s\n", filename);
2517 }
djm@openbsd.org9a14c642019-10-31 21:23:19 +00002518 if ((r = sshsig_sign_fd(signkey, NULL, sk_provider, fd, sig_namespace,
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002519 &sigbuf, signer, signer_ctx)) != 0) {
2520 error("Signing %s failed: %s", filename, ssh_err(r));
2521 goto out;
2522 }
2523 if ((r = sshsig_armor(sigbuf, &abuf)) != 0) {
2524 error("%s: sshsig_armor: %s", __func__, ssh_err(r));
2525 goto out;
2526 }
2527 if ((asig = sshbuf_dup_string(abuf)) == NULL) {
2528 error("%s: buffer error", __func__);
2529 r = SSH_ERR_ALLOC_FAIL;
2530 goto out;
2531 }
2532
2533 if (fd == STDIN_FILENO) {
2534 fputs(asig, stdout);
2535 fflush(stdout);
2536 } else {
2537 xasprintf(&wfile, "%s.sig", filename);
2538 if (confirm_overwrite(wfile)) {
2539 if ((wfd = open(wfile, O_WRONLY|O_CREAT|O_TRUNC,
2540 0666)) == -1) {
2541 oerrno = errno;
2542 error("Cannot open %s: %s",
2543 wfile, strerror(errno));
2544 errno = oerrno;
2545 r = SSH_ERR_SYSTEM_ERROR;
2546 goto out;
2547 }
2548 if (atomicio(vwrite, wfd, asig,
2549 strlen(asig)) != strlen(asig)) {
2550 oerrno = errno;
2551 error("Cannot write to %s: %s",
2552 wfile, strerror(errno));
2553 errno = oerrno;
2554 r = SSH_ERR_SYSTEM_ERROR;
2555 goto out;
2556 }
2557 if (!quiet) {
2558 fprintf(stderr, "Write signature to %s\n",
2559 wfile);
2560 }
2561 }
2562 }
2563 /* success */
2564 r = 0;
2565 out:
2566 free(wfile);
2567 free(asig);
2568 sshbuf_free(abuf);
2569 sshbuf_free(sigbuf);
2570 if (wfd != -1)
2571 close(wfd);
2572 return r;
2573}
2574
2575static int
2576sign(const char *keypath, const char *sig_namespace, int argc, char **argv)
2577{
2578 int i, fd = -1, r, ret = -1;
2579 int agent_fd = -1;
2580 struct sshkey *pubkey = NULL, *privkey = NULL, *signkey = NULL;
2581 sshsig_signer *signer = NULL;
2582
2583 /* Check file arguments. */
2584 for (i = 0; i < argc; i++) {
2585 if (strcmp(argv[i], "-") != 0)
2586 continue;
2587 if (i > 0 || argc > 1)
2588 fatal("Cannot sign mix of paths and standard input");
2589 }
2590
2591 if ((r = sshkey_load_public(keypath, &pubkey, NULL)) != 0) {
2592 error("Couldn't load public key %s: %s", keypath, ssh_err(r));
2593 goto done;
2594 }
2595
2596 if ((r = ssh_get_authentication_socket(&agent_fd)) != 0)
2597 debug("Couldn't get agent socket: %s", ssh_err(r));
2598 else {
2599 if ((r = ssh_agent_has_key(agent_fd, pubkey)) == 0)
2600 signer = agent_signer;
2601 else
2602 debug("Couldn't find key in agent: %s", ssh_err(r));
2603 }
2604
2605 if (signer == NULL) {
2606 /* Not using agent - try to load private key */
2607 if ((privkey = load_sign_key(keypath, pubkey)) == NULL)
2608 goto done;
2609 signkey = privkey;
2610 } else {
2611 /* Will use key in agent */
2612 signkey = pubkey;
2613 }
2614
2615 if (argc == 0) {
2616 if ((r = sign_one(signkey, "(stdin)", STDIN_FILENO,
2617 sig_namespace, signer, &agent_fd)) != 0)
2618 goto done;
2619 } else {
2620 for (i = 0; i < argc; i++) {
2621 if (strcmp(argv[i], "-") == 0)
2622 fd = STDIN_FILENO;
2623 else if ((fd = open(argv[i], O_RDONLY)) == -1) {
2624 error("Cannot open %s for signing: %s",
2625 argv[i], strerror(errno));
2626 goto done;
2627 }
2628 if ((r = sign_one(signkey, argv[i], fd, sig_namespace,
2629 signer, &agent_fd)) != 0)
2630 goto done;
2631 if (fd != STDIN_FILENO)
2632 close(fd);
2633 fd = -1;
2634 }
2635 }
2636
2637 ret = 0;
2638done:
2639 if (fd != -1 && fd != STDIN_FILENO)
2640 close(fd);
2641 sshkey_free(pubkey);
2642 sshkey_free(privkey);
2643 return ret;
2644}
2645
2646static int
2647verify(const char *signature, const char *sig_namespace, const char *principal,
2648 const char *allowed_keys, const char *revoked_keys)
2649{
2650 int r, ret = -1, sigfd = -1;
2651 struct sshbuf *sigbuf = NULL, *abuf = NULL;
2652 struct sshkey *sign_key = NULL;
2653 char *fp = NULL;
2654
2655 if ((abuf = sshbuf_new()) == NULL)
2656 fatal("%s: sshbuf_new() failed", __func__);
2657
2658 if ((sigfd = open(signature, O_RDONLY)) < 0) {
2659 error("Couldn't open signature file %s", signature);
2660 goto done;
2661 }
2662
2663 if ((r = sshkey_load_file(sigfd, abuf)) != 0) {
2664 error("Couldn't read signature file: %s", ssh_err(r));
2665 goto done;
2666 }
2667 if ((r = sshsig_dearmor(abuf, &sigbuf)) != 0) {
2668 error("%s: sshsig_armor: %s", __func__, ssh_err(r));
2669 return r;
2670 }
2671 if ((r = sshsig_verify_fd(sigbuf, STDIN_FILENO, sig_namespace,
2672 &sign_key)) != 0)
2673 goto done; /* sshsig_verify() prints error */
2674
2675 if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,
2676 SSH_FP_DEFAULT)) == NULL)
2677 fatal("%s: sshkey_fingerprint failed", __func__);
2678 debug("Valid (unverified) signature from key %s", fp);
2679 free(fp);
2680 fp = NULL;
2681
2682 if (revoked_keys != NULL) {
djm@openbsd.orgd637c4a2019-09-03 08:35:27 +00002683 if ((r = sshkey_check_revoked(sign_key, revoked_keys)) != 0) {
2684 debug3("sshkey_check_revoked failed: %s", ssh_err(r));
2685 goto done;
2686 }
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002687 }
2688
djm@openbsd.org8aa2aa32019-09-16 03:23:02 +00002689 if (allowed_keys != NULL &&
2690 (r = sshsig_check_allowed_keys(allowed_keys, sign_key,
2691 principal, sig_namespace)) != 0) {
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002692 debug3("sshsig_check_allowed_keys failed: %s", ssh_err(r));
2693 goto done;
2694 }
2695 /* success */
2696 ret = 0;
2697done:
2698 if (!quiet) {
2699 if (ret == 0) {
2700 if ((fp = sshkey_fingerprint(sign_key, fingerprint_hash,
2701 SSH_FP_DEFAULT)) == NULL) {
2702 fatal("%s: sshkey_fingerprint failed",
2703 __func__);
2704 }
djm@openbsd.org8aa2aa32019-09-16 03:23:02 +00002705 if (principal == NULL) {
2706 printf("Good \"%s\" signature with %s key %s\n",
2707 sig_namespace, sshkey_type(sign_key), fp);
2708
2709 } else {
2710 printf("Good \"%s\" signature for %s with %s key %s\n",
2711 sig_namespace, principal,
2712 sshkey_type(sign_key), fp);
2713 }
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002714 } else {
2715 printf("Could not verify signature.\n");
2716 }
2717 }
2718 if (sigfd != -1)
2719 close(sigfd);
2720 sshbuf_free(sigbuf);
2721 sshbuf_free(abuf);
2722 sshkey_free(sign_key);
2723 free(fp);
2724 return ret;
2725}
2726
Damien Millerf3747bf2013-01-18 11:44:04 +11002727static void
Damien Miller431f66b1999-11-21 18:31:57 +11002728usage(void)
2729{
Damien Millerf0858de2014-04-20 13:01:30 +10002730 fprintf(stderr,
jmc@openbsd.org69189742019-10-03 17:07:50 +00002731 "usage: ssh-keygen [-q] [-b bits] [-C comment] [-f output_keyfile] [-m format]\n"
naddy@openbsd.orgaa4c6402019-11-07 08:38:38 +00002732 " [-t dsa | ecdsa | ecdsa-sk | ed25519 | rsa]\n"
2733 " [-N new_passphrase] [-w provider] [-x flags]\n"
jmc@openbsd.org69189742019-10-03 17:07:50 +00002734 " ssh-keygen -p [-f keyfile] [-m format] [-N new_passphrase]\n"
2735 " [-P old_passphrase]\n"
2736 " ssh-keygen -i [-f input_keyfile] [-m key_format]\n"
2737 " ssh-keygen -e [-f input_keyfile] [-m key_format]\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002738 " ssh-keygen -y [-f input_keyfile]\n"
jmc@openbsd.org69189742019-10-03 17:07:50 +00002739 " ssh-keygen -c [-C comment] [-f keyfile] [-P passphrase]\n"
naddy@openbsd.org6288e3a2015-02-24 15:24:05 +00002740 " ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
djm@openbsd.org873d3e72017-04-30 23:18:44 +00002741 " ssh-keygen -B [-f input_keyfile]\n");
Damien Miller7ea845e2010-02-12 09:21:02 +11002742#ifdef ENABLE_PKCS11
Damien Millerf0858de2014-04-20 13:01:30 +10002743 fprintf(stderr,
2744 " ssh-keygen -D pkcs11\n");
Damien Miller7ea845e2010-02-12 09:21:02 +11002745#endif
Damien Millerf0858de2014-04-20 13:01:30 +10002746 fprintf(stderr,
jmc@openbsd.org6c91d422019-09-29 16:31:57 +00002747 " ssh-keygen -F hostname [-lv] [-f known_hosts_file]\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002748 " ssh-keygen -H [-f known_hosts_file]\n"
2749 " ssh-keygen -R hostname [-f known_hosts_file]\n"
jmc@openbsd.org6c91d422019-09-29 16:31:57 +00002750 " ssh-keygen -r hostname [-g] [-f input_keyfile]\n"
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002751#ifdef WITH_OPENSSL
Damien Millerf0858de2014-04-20 13:01:30 +10002752 " ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
jmc@openbsd.org69189742019-10-03 17:07:50 +00002753 " ssh-keygen -f input_file -T output_file [-v] [-a rounds] [-J num_lines]\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002754 " [-j start_line] [-K checkpt] [-W generator]\n"
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002755#endif
jmc@openbsd.org69189742019-10-03 17:07:50 +00002756 " ssh-keygen -I certificate_identity -s ca_key [-hU] [-D pkcs11_provider]\n"
2757 " [-n principals] [-O option] [-V validity_interval]\n"
2758 " [-z serial_number] file ...\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002759 " ssh-keygen -L [-f input_keyfile]\n"
jmc@openbsd.org69189742019-10-03 17:07:50 +00002760 " ssh-keygen -A [-f prefix_path]\n"
Damien Millerf0858de2014-04-20 13:01:30 +10002761 " ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
2762 " file ...\n"
naddy@openbsd.org0f44e592019-09-03 20:51:49 +00002763 " ssh-keygen -Q -f krl_file file ...\n"
jmc@openbsd.org69189742019-10-03 17:07:50 +00002764 " ssh-keygen -Y check-novalidate -n namespace -s signature_file\n"
2765 " ssh-keygen -Y sign -f key_file -n namespace file ...\n"
2766 " ssh-keygen -Y verify -f allowed_signers_file -I signer_identity\n"
2767 " -n namespace -s signature_file [-r revocation_file]\n");
Damien Miller95def091999-11-25 00:26:21 +11002768 exit(1);
Damien Miller431f66b1999-11-21 18:31:57 +11002769}
2770
Damien Miller95def091999-11-25 00:26:21 +11002771/*
2772 * Main program for key management.
2773 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002774int
Damien Millerdf8b7db2007-01-05 16:22:57 +11002775main(int argc, char **argv)
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002776{
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +00002777 char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002778 char *rr_hostname = NULL, *ep, *fp, *ra;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002779 struct sshkey *private, *public;
Damien Miller95def091999-11-25 00:26:21 +11002780 struct passwd *pw;
Damien Miller95def091999-11-25 00:26:21 +11002781 struct stat st;
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00002782 int r, opt, type, fd;
djm@openbsd.org851f8032019-01-23 04:16:22 +00002783 int change_passphrase = 0, change_comment = 0, show_cert = 0;
2784 int find_host = 0, delete_host = 0, hash_hosts = 0;
Damien Millerf3747bf2013-01-18 11:44:04 +11002785 int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
djm@openbsd.org851f8032019-01-23 04:16:22 +00002786 int prefer_agent = 0, convert_to = 0, convert_from = 0;
djm@openbsd.orgbe063942019-01-23 04:51:02 +00002787 int print_public = 0, print_generic = 0, cert_serial_autoinc = 0;
djm@openbsd.org23f38c22019-10-31 21:17:09 +00002788 unsigned long long ull, cert_serial = 0;
djm@openbsd.org851f8032019-01-23 04:16:22 +00002789 char *identity_comment = NULL, *ca_key_path = NULL;
dtucker@openbsd.org7afc45c2019-08-08 08:02:57 +00002790 u_int32_t bits = 0;
Damien Miller95def091999-11-25 00:26:21 +11002791 FILE *f;
Damien Miller02e754f2005-05-26 12:19:39 +10002792 const char *errstr;
djm@openbsd.org851f8032019-01-23 04:16:22 +00002793 int log_level = SYSLOG_LEVEL_INFO;
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002794 char *sign_op = NULL;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002795#ifdef WITH_OPENSSL
2796 /* Moduli generation/screening */
2797 char out_file[PATH_MAX], *checkpoint = NULL;
2798 u_int32_t memory = 0, generator_wanted = 0;
2799 int do_gen_candidates = 0, do_screen_candidates = 0;
2800 unsigned long start_lineno = 0, lines_to_process = 0;
2801 BIGNUM *start = NULL;
2802#endif
Damien Miller764d51e2019-11-01 13:34:49 +11002803#ifdef ENABLE_SK
2804 uint8_t sk_flags = SSH_SK_USER_PRESENCE_REQD;
2805#endif
Damien Miller0bc1bd82000-11-13 22:57:25 +11002806
Damien Miller95def091999-11-25 00:26:21 +11002807 extern int optind;
2808 extern char *optarg;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10002809
Darren Tuckerce321d82005-10-03 18:11:24 +10002810 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
2811 sanitise_stdfd();
2812
Darren Tucker9ac56e92007-01-14 10:19:59 +11002813 __progname = ssh_get_progname(argv[0]);
Damien Millerf9b625c2000-07-09 22:42:32 +10002814
Kevin Steves3a881912002-07-20 19:05:40 +00002815 seed_rng();
Damien Millereba71ba2000-04-29 23:57:08 +10002816
Damien Miller42c5ec42018-11-23 10:40:06 +11002817 log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
2818
djm@openbsd.orga287c5a2017-02-10 03:36:40 +00002819 msetlocale();
2820
Damien Miller5428f641999-11-25 11:54:57 +11002821 /* we need this for the home * directory. */
Damien Miller95def091999-11-25 00:26:21 +11002822 pw = getpwuid(getuid());
djm@openbsd.org3038a192015-04-17 13:19:22 +00002823 if (!pw)
2824 fatal("No user exists for uid %lu", (u_long)getuid());
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00002825 if (gethostname(hostname, sizeof(hostname)) == -1)
djm@openbsd.org3038a192015-04-17 13:19:22 +00002826 fatal("gethostname: %s", strerror(errno));
Damien Miller5428f641999-11-25 11:54:57 +11002827
djm@openbsd.org23f38c22019-10-31 21:17:09 +00002828 sk_provider = getenv("SSH_SK_PROVIDER");
2829
2830 /* Remaining character: d */
djm@openbsd.orgaa1c9e32019-11-08 03:54:02 +00002831 while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvy"
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002832 "C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Y:Z:"
djm@openbsd.org23f38c22019-10-31 21:17:09 +00002833 "a:b:f:g:j:m:n:r:s:t:w:x:z:")) != -1) {
Damien Miller95def091999-11-25 00:26:21 +11002834 switch (opt) {
Damien Miller58f1baf2011-05-05 14:06:15 +10002835 case 'A':
2836 gen_all_hostkeys = 1;
2837 break;
Damien Miller95def091999-11-25 00:26:21 +11002838 case 'b':
dtucker@openbsd.org7afc45c2019-08-08 08:02:57 +00002839 bits = (u_int32_t)strtonum(optarg, 1, UINT32_MAX,
2840 &errstr);
Damien Miller02e754f2005-05-26 12:19:39 +10002841 if (errstr)
2842 fatal("Bits has bad value %s (%s)",
2843 optarg, errstr);
Damien Miller95def091999-11-25 00:26:21 +11002844 break;
djm@openbsd.org56d1c832014-12-21 22:27:55 +00002845 case 'E':
2846 fingerprint_hash = ssh_digest_alg_by_name(optarg);
2847 if (fingerprint_hash == -1)
2848 fatal("Invalid hash algorithm \"%s\"", optarg);
2849 break;
Damien Miller4b42d7f2005-03-01 21:48:35 +11002850 case 'F':
2851 find_host = 1;
2852 rr_hostname = optarg;
2853 break;
2854 case 'H':
2855 hash_hosts = 1;
2856 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002857 case 'I':
2858 cert_key_id = optarg;
2859 break;
Damien Miller4b42d7f2005-03-01 21:48:35 +11002860 case 'R':
2861 delete_host = 1;
2862 rr_hostname = optarg;
2863 break;
Damien Millerf2b70ca2010-03-05 07:39:35 +11002864 case 'L':
2865 show_cert = 1;
2866 break;
Damien Miller95def091999-11-25 00:26:21 +11002867 case 'l':
2868 print_fingerprint = 1;
2869 break;
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00002870 case 'B':
2871 print_bubblebabble = 1;
2872 break;
Damien Miller44b25042010-07-02 13:35:01 +10002873 case 'm':
2874 if (strcasecmp(optarg, "RFC4716") == 0 ||
2875 strcasecmp(optarg, "ssh2") == 0) {
2876 convert_format = FMT_RFC4716;
2877 break;
2878 }
2879 if (strcasecmp(optarg, "PKCS8") == 0) {
2880 convert_format = FMT_PKCS8;
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00002881 private_key_format = SSHKEY_PRIVATE_PKCS8;
Damien Miller44b25042010-07-02 13:35:01 +10002882 break;
2883 }
2884 if (strcasecmp(optarg, "PEM") == 0) {
2885 convert_format = FMT_PEM;
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00002886 private_key_format = SSHKEY_PRIVATE_PEM;
Damien Miller44b25042010-07-02 13:35:01 +10002887 break;
2888 }
2889 fatal("Unsupported conversion format \"%s\"", optarg);
Damien Miller0a80ca12010-02-27 07:55:05 +11002890 case 'n':
2891 cert_principals = optarg;
2892 break;
Damien Millerbcd00ab2013-12-07 10:41:55 +11002893 case 'o':
djm@openbsd.orged7bd5d2018-08-08 01:16:01 +00002894 /* no-op; new format is already the default */
Damien Millerbcd00ab2013-12-07 10:41:55 +11002895 break;
Damien Miller95def091999-11-25 00:26:21 +11002896 case 'p':
2897 change_passphrase = 1;
2898 break;
Damien Miller95def091999-11-25 00:26:21 +11002899 case 'c':
2900 change_comment = 1;
2901 break;
Damien Miller95def091999-11-25 00:26:21 +11002902 case 'f':
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002903 if (strlcpy(identity_file, optarg,
2904 sizeof(identity_file)) >= sizeof(identity_file))
Damien Millerb089fb52005-05-26 12:16:18 +10002905 fatal("Identity filename too long");
Damien Miller95def091999-11-25 00:26:21 +11002906 have_identity = 1;
2907 break;
Damien Miller37876e92003-05-15 10:19:46 +10002908 case 'g':
2909 print_generic = 1;
2910 break;
Damien Miller95def091999-11-25 00:26:21 +11002911 case 'P':
2912 identity_passphrase = optarg;
2913 break;
Damien Miller95def091999-11-25 00:26:21 +11002914 case 'N':
2915 identity_new_passphrase = optarg;
2916 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002917 case 'Q':
2918 check_krl = 1;
2919 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002920 case 'O':
Damien Miller4e270b02010-04-16 15:56:21 +10002921 add_cert_option(optarg);
Damien Miller0a80ca12010-02-27 07:55:05 +11002922 break;
Damien Millerbcd00ab2013-12-07 10:41:55 +11002923 case 'Z':
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00002924 openssh_format_cipher = optarg;
Damien Millerbcd00ab2013-12-07 10:41:55 +11002925 break;
Damien Miller95def091999-11-25 00:26:21 +11002926 case 'C':
2927 identity_comment = optarg;
2928 break;
Damien Miller95def091999-11-25 00:26:21 +11002929 case 'q':
2930 quiet = 1;
2931 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00002932 case 'e':
Ben Lindstrom5a707822001-04-22 17:15:46 +00002933 /* export key */
Damien Miller44b25042010-07-02 13:35:01 +10002934 convert_to = 1;
Damien Millereba71ba2000-04-29 23:57:08 +10002935 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002936 case 'h':
2937 cert_key_type = SSH2_CERT_TYPE_HOST;
Damien Millerd0e4a8e2010-05-21 14:58:32 +10002938 certflags_flags = 0;
Damien Miller0a80ca12010-02-27 07:55:05 +11002939 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002940 case 'k':
2941 gen_krl = 1;
2942 break;
Ben Lindstrom5a707822001-04-22 17:15:46 +00002943 case 'i':
Damien Millereba71ba2000-04-29 23:57:08 +10002944 case 'X':
Ben Lindstrom5a707822001-04-22 17:15:46 +00002945 /* import key */
Damien Miller44b25042010-07-02 13:35:01 +10002946 convert_from = 1;
Damien Millereba71ba2000-04-29 23:57:08 +10002947 break;
Damien Millereba71ba2000-04-29 23:57:08 +10002948 case 'y':
2949 print_public = 1;
2950 break;
Damien Miller0a80ca12010-02-27 07:55:05 +11002951 case 's':
2952 ca_key_path = optarg;
2953 break;
Damien Miller0bc1bd82000-11-13 22:57:25 +11002954 case 't':
2955 key_type_name = optarg;
Damien Miller0bc1bd82000-11-13 22:57:25 +11002956 break;
Ben Lindstrom8282d6a2001-08-06 21:44:05 +00002957 case 'D':
Damien Miller7ea845e2010-02-12 09:21:02 +11002958 pkcs11provider = optarg;
Ben Lindstromcd392282001-07-04 03:44:03 +00002959 break;
djm@openbsd.orga98339e2017-06-28 01:09:22 +00002960 case 'U':
2961 prefer_agent = 1;
2962 break;
Damien Millerf3747bf2013-01-18 11:44:04 +11002963 case 'u':
2964 update_krl = 1;
2965 break;
Darren Tucker06930c72003-12-31 11:34:51 +11002966 case 'v':
2967 if (log_level == SYSLOG_LEVEL_INFO)
2968 log_level = SYSLOG_LEVEL_DEBUG1;
2969 else {
Darren Tuckerfc959702004-07-17 16:12:08 +10002970 if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
Darren Tucker06930c72003-12-31 11:34:51 +11002971 log_level < SYSLOG_LEVEL_DEBUG3)
2972 log_level++;
2973 }
2974 break;
Damien Miller37876e92003-05-15 10:19:46 +10002975 case 'r':
Damien Miller4b42d7f2005-03-01 21:48:35 +11002976 rr_hostname = optarg;
Damien Miller37876e92003-05-15 10:19:46 +10002977 break;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00002978 case 'a':
2979 rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
2980 if (errstr)
2981 fatal("Invalid number: %s (%s)",
2982 optarg, errstr);
2983 break;
2984 case 'V':
2985 parse_cert_times(optarg);
2986 break;
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00002987 case 'Y':
2988 sign_op = optarg;
djm@openbsd.org23f38c22019-10-31 21:17:09 +00002989 case 'w':
2990 sk_provider = optarg;
2991 break;
2992 case 'x':
2993 if (*optarg == '\0')
2994 fatal("Missing security key flags");
2995 ull = strtoull(optarg, &ep, 0);
2996 if (*ep != '\0')
2997 fatal("Security key flags \"%s\" is not a "
2998 "number", optarg);
2999 if (ull > 0xff)
3000 fatal("Invalid security key flags 0x%llx", ull);
Damien Miller764d51e2019-11-01 13:34:49 +11003001#ifdef ENABLE_SK
djm@openbsd.org23f38c22019-10-31 21:17:09 +00003002 sk_flags = (uint8_t)ull;
Damien Miller764d51e2019-11-01 13:34:49 +11003003#endif
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00003004 break;
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00003005 case 'z':
3006 errno = 0;
djm@openbsd.orgbe063942019-01-23 04:51:02 +00003007 if (*optarg == '+') {
3008 cert_serial_autoinc = 1;
3009 optarg++;
3010 }
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00003011 cert_serial = strtoull(optarg, &ep, 10);
3012 if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
3013 (errno == ERANGE && cert_serial == ULLONG_MAX))
3014 fatal("Invalid serial number \"%s\"", optarg);
3015 break;
3016#ifdef WITH_OPENSSL
3017 /* Moduli generation/screening */
Darren Tucker019cefe2003-08-02 22:40:07 +10003018 case 'G':
3019 do_gen_candidates = 1;
Damien Millerb089fb52005-05-26 12:16:18 +10003020 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
3021 sizeof(out_file))
3022 fatal("Output filename too long");
Darren Tucker019cefe2003-08-02 22:40:07 +10003023 break;
Darren Tucker0bb29802016-09-12 11:07:00 +10003024 case 'J':
3025 lines_to_process = strtoul(optarg, NULL, 10);
dtucker@openbsd.org7b63cf62016-09-12 03:29:16 +00003026 break;
Darren Tucker0bb29802016-09-12 11:07:00 +10003027 case 'j':
3028 start_lineno = strtoul(optarg, NULL, 10);
dtucker@openbsd.org7b63cf62016-09-12 03:29:16 +00003029 break;
Damien Miller390d0562011-10-18 16:05:19 +11003030 case 'K':
deraadt@openbsd.org2ae4f332015-01-16 06:40:12 +00003031 if (strlen(optarg) >= PATH_MAX)
Damien Miller390d0562011-10-18 16:05:19 +11003032 fatal("Checkpoint filename too long");
3033 checkpoint = xstrdup(optarg);
3034 break;
Darren Tuckerd8c3cfb2016-09-12 13:30:50 +10003035 case 'M':
3036 memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
3037 &errstr);
3038 if (errstr)
3039 fatal("Memory limit is %s: %s", errstr, optarg);
3040 break;
Darren Tucker019cefe2003-08-02 22:40:07 +10003041 case 'S':
3042 /* XXX - also compare length against bits */
3043 if (BN_hex2bn(&start, optarg) == 0)
3044 fatal("Invalid start point.");
3045 break;
Darren Tuckeraf48d542016-09-12 13:52:17 +10003046 case 'T':
3047 do_screen_candidates = 1;
3048 if (strlcpy(out_file, optarg, sizeof(out_file)) >=
3049 sizeof(out_file))
3050 fatal("Output filename too long");
3051 break;
Darren Tucker43cceff2016-09-12 13:55:37 +10003052 case 'W':
3053 generator_wanted = (u_int32_t)strtonum(optarg, 1,
3054 UINT_MAX, &errstr);
Darren Tucker70508962016-09-12 13:57:28 +10003055 if (errstr != NULL)
3056 fatal("Desired generator invalid: %s (%s)",
3057 optarg, errstr);
Darren Tucker43cceff2016-09-12 13:55:37 +10003058 break;
Damien Miller72ef7c12015-01-15 02:21:31 +11003059#endif /* WITH_OPENSSL */
Damien Miller95def091999-11-25 00:26:21 +11003060 case '?':
3061 default:
3062 usage();
3063 }
3064 }
Darren Tucker06930c72003-12-31 11:34:51 +11003065
3066 /* reinit */
Damien Millerdf8b7db2007-01-05 16:22:57 +11003067 log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
Darren Tucker06930c72003-12-31 11:34:51 +11003068
Damien Miller0a80ca12010-02-27 07:55:05 +11003069 argv += optind;
3070 argc -= optind;
3071
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00003072 if (sign_op != NULL) {
djm@openbsd.orgfeff96b2019-10-02 09:50:50 +00003073 if (cert_principals == NULL || *cert_principals == '\0') {
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00003074 error("Too few arguments for sign/verify: "
3075 "missing namespace");
3076 exit(1);
3077 }
3078 if (strncmp(sign_op, "sign", 4) == 0) {
3079 if (!have_identity) {
3080 error("Too few arguments for sign: "
3081 "missing key");
3082 exit(1);
3083 }
3084 return sign(identity_file, cert_principals, argc, argv);
djm@openbsd.org8aa2aa32019-09-16 03:23:02 +00003085 } else if (strncmp(sign_op, "check-novalidate", 16) == 0) {
3086 if (ca_key_path == NULL) {
3087 error("Too few arguments for check-novalidate: "
3088 "missing signature file");
3089 exit(1);
3090 }
3091 return verify(ca_key_path, cert_principals,
3092 NULL, NULL, NULL);
djm@openbsd.org2a9c9f72019-09-03 08:34:19 +00003093 } else if (strncmp(sign_op, "verify", 6) == 0) {
3094 if (ca_key_path == NULL) {
3095 error("Too few arguments for verify: "
3096 "missing signature file");
3097 exit(1);
3098 }
3099 if (!have_identity) {
3100 error("Too few arguments for sign: "
3101 "missing allowed keys file");
3102 exit(1);
3103 }
3104 if (cert_key_id == NULL) {
3105 error("Too few arguments for verify: "
3106 "missing principal ID");
3107 exit(1);
3108 }
3109 return verify(ca_key_path, cert_principals,
3110 cert_key_id, identity_file, rr_hostname);
3111 }
3112 usage();
3113 /* NOTREACHED */
3114 }
3115
Damien Miller0a80ca12010-02-27 07:55:05 +11003116 if (ca_key_path != NULL) {
Damien Millerf3747bf2013-01-18 11:44:04 +11003117 if (argc < 1 && !gen_krl) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00003118 error("Too few arguments.");
Damien Miller0a80ca12010-02-27 07:55:05 +11003119 usage();
3120 }
Damien Millerf3747bf2013-01-18 11:44:04 +11003121 } else if (argc > 0 && !gen_krl && !check_krl) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00003122 error("Too many arguments.");
Damien Miller95def091999-11-25 00:26:21 +11003123 usage();
3124 }
3125 if (change_passphrase && change_comment) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00003126 error("Can only have one of -p and -c.");
Damien Miller95def091999-11-25 00:26:21 +11003127 usage();
3128 }
Darren Tucker0f7e9102008-06-08 12:54:29 +10003129 if (print_fingerprint && (delete_host || hash_hosts)) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00003130 error("Cannot use -l with -H or -R.");
Darren Tucker0f7e9102008-06-08 12:54:29 +10003131 usage();
3132 }
Damien Millerf3747bf2013-01-18 11:44:04 +11003133 if (gen_krl) {
djm@openbsd.org851f8032019-01-23 04:16:22 +00003134 do_gen_krl(pw, update_krl, ca_key_path,
3135 cert_serial, identity_comment, argc, argv);
Damien Millerf3747bf2013-01-18 11:44:04 +11003136 return (0);
3137 }
3138 if (check_krl) {
3139 do_check_krl(pw, argc, argv);
3140 return (0);
3141 }
Damien Miller0a80ca12010-02-27 07:55:05 +11003142 if (ca_key_path != NULL) {
3143 if (cert_key_id == NULL)
3144 fatal("Must specify key id (-I) when certifying");
djm@openbsd.orgbe063942019-01-23 04:51:02 +00003145 do_ca_sign(pw, ca_key_path, prefer_agent,
3146 cert_serial, cert_serial_autoinc, argc, argv);
Damien Miller0a80ca12010-02-27 07:55:05 +11003147 }
Damien Millerf2b70ca2010-03-05 07:39:35 +11003148 if (show_cert)
3149 do_show_cert(pw);
djm@openbsd.org851f8032019-01-23 04:16:22 +00003150 if (delete_host || hash_hosts || find_host) {
3151 do_known_hosts(pw, rr_hostname, find_host,
3152 delete_host, hash_hosts);
3153 }
Damien Millerec77c952013-01-09 15:58:00 +11003154 if (pkcs11provider != NULL)
3155 do_download(pw);
Ben Lindstrom8fd372b2001-03-12 03:02:17 +00003156 if (print_fingerprint || print_bubblebabble)
Damien Miller95def091999-11-25 00:26:21 +11003157 do_fingerprint(pw);
Damien Miller95def091999-11-25 00:26:21 +11003158 if (change_passphrase)
3159 do_change_passphrase(pw);
Damien Miller4a10d2e2002-03-11 22:53:29 +11003160 if (change_comment)
djm@openbsd.org851f8032019-01-23 04:16:22 +00003161 do_change_comment(pw, identity_comment);
Damien Miller1f0311c2014-05-15 14:24:09 +10003162#ifdef WITH_OPENSSL
Damien Miller44b25042010-07-02 13:35:01 +10003163 if (convert_to)
3164 do_convert_to(pw);
3165 if (convert_from)
3166 do_convert_from(pw);
djm@openbsd.orgc8bdd2d2019-09-06 07:53:40 +00003167#else /* WITH_OPENSSL */
3168 if (convert_to || convert_from)
3169 fatal("key conversion disabled at compile time");
3170#endif /* WITH_OPENSSL */
Damien Millereba71ba2000-04-29 23:57:08 +10003171 if (print_public)
3172 do_print_public(pw);
Damien Miller4b42d7f2005-03-01 21:48:35 +11003173 if (rr_hostname != NULL) {
Damien Millercb314822006-03-26 13:48:01 +11003174 unsigned int n = 0;
3175
3176 if (have_identity) {
djm@openbsd.org851f8032019-01-23 04:16:22 +00003177 n = do_print_resource_record(pw, identity_file,
3178 rr_hostname, print_generic);
djm@openbsd.org3038a192015-04-17 13:19:22 +00003179 if (n == 0)
3180 fatal("%s: %s", identity_file, strerror(errno));
Damien Millercb314822006-03-26 13:48:01 +11003181 exit(0);
3182 } else {
3183
3184 n += do_print_resource_record(pw,
djm@openbsd.org851f8032019-01-23 04:16:22 +00003185 _PATH_HOST_RSA_KEY_FILE, rr_hostname,
3186 print_generic);
Damien Millercb314822006-03-26 13:48:01 +11003187 n += do_print_resource_record(pw,
djm@openbsd.org851f8032019-01-23 04:16:22 +00003188 _PATH_HOST_DSA_KEY_FILE, rr_hostname,
3189 print_generic);
Damien Miller3bde12a2012-06-20 21:51:11 +10003190 n += do_print_resource_record(pw,
djm@openbsd.org851f8032019-01-23 04:16:22 +00003191 _PATH_HOST_ECDSA_KEY_FILE, rr_hostname,
3192 print_generic);
Damien Miller16cd3922014-05-15 13:45:58 +10003193 n += do_print_resource_record(pw,
djm@openbsd.org851f8032019-01-23 04:16:22 +00003194 _PATH_HOST_ED25519_KEY_FILE, rr_hostname,
3195 print_generic);
markus@openbsd.org1b11ea72018-02-23 15:58:37 +00003196 n += do_print_resource_record(pw,
djm@openbsd.org851f8032019-01-23 04:16:22 +00003197 _PATH_HOST_XMSS_KEY_FILE, rr_hostname,
3198 print_generic);
Damien Millercb314822006-03-26 13:48:01 +11003199 if (n == 0)
3200 fatal("no keys found.");
3201 exit(0);
3202 }
Damien Miller37876e92003-05-15 10:19:46 +10003203 }
Damien Miller95def091999-11-25 00:26:21 +11003204
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00003205#ifdef WITH_OPENSSL
Darren Tucker019cefe2003-08-02 22:40:07 +10003206 if (do_gen_candidates) {
3207 FILE *out = fopen(out_file, "w");
Damien Miller787b2ec2003-11-21 23:56:47 +11003208
Darren Tucker019cefe2003-08-02 22:40:07 +10003209 if (out == NULL) {
3210 error("Couldn't open modulus candidate file \"%s\": %s",
3211 out_file, strerror(errno));
3212 return (1);
3213 }
Damien Miller3f54a9f2005-11-05 14:52:18 +11003214 if (bits == 0)
3215 bits = DEFAULT_BITS;
Darren Tucker019cefe2003-08-02 22:40:07 +10003216 if (gen_candidates(out, memory, bits, start) != 0)
Damien Miller15d72a02005-11-05 15:07:33 +11003217 fatal("modulus candidate generation failed");
Darren Tucker019cefe2003-08-02 22:40:07 +10003218
3219 return (0);
3220 }
3221
3222 if (do_screen_candidates) {
3223 FILE *in;
Damien Miller78d22712013-02-12 11:03:36 +11003224 FILE *out = fopen(out_file, "a");
Darren Tucker019cefe2003-08-02 22:40:07 +10003225
3226 if (have_identity && strcmp(identity_file, "-") != 0) {
3227 if ((in = fopen(identity_file, "r")) == NULL) {
3228 fatal("Couldn't open modulus candidate "
Damien Millera8e06ce2003-11-21 23:48:55 +11003229 "file \"%s\": %s", identity_file,
Darren Tucker019cefe2003-08-02 22:40:07 +10003230 strerror(errno));
3231 }
3232 } else
3233 in = stdin;
3234
3235 if (out == NULL) {
3236 fatal("Couldn't open moduli file \"%s\": %s",
3237 out_file, strerror(errno));
3238 }
Damien Millerbcd00ab2013-12-07 10:41:55 +11003239 if (prime_test(in, out, rounds == 0 ? 100 : rounds,
3240 generator_wanted, checkpoint,
Damien Millerdfceafe2012-07-06 13:44:19 +10003241 start_lineno, lines_to_process) != 0)
Damien Miller15d72a02005-11-05 15:07:33 +11003242 fatal("modulus screening failed");
Darren Tuckerf4220e62003-08-21 16:44:07 +10003243 return (0);
Darren Tucker019cefe2003-08-02 22:40:07 +10003244 }
djm@openbsd.org1d9a2e22015-05-28 07:37:31 +00003245#endif
Darren Tucker019cefe2003-08-02 22:40:07 +10003246
Damien Miller58f1baf2011-05-05 14:06:15 +10003247 if (gen_all_hostkeys) {
3248 do_gen_all_hostkeys(pw);
3249 return (0);
3250 }
3251
Damien Millerf14be5c2005-11-05 15:15:49 +11003252 if (key_type_name == NULL)
djm@openbsd.orgd1958792015-05-28 04:40:13 +00003253 key_type_name = DEFAULT_KEY_TYPE_NAME;
Damien Millerf14be5c2005-11-05 15:15:49 +11003254
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003255 type = sshkey_type_from_name(key_type_name);
djm@openbsd.org7efb4552015-01-18 13:22:28 +00003256 type_bits_valid(type, key_type_name, &bits);
Damien Miller58f1baf2011-05-05 14:06:15 +10003257
Darren Tucker3af2ac52005-11-29 13:10:24 +11003258 if (!quiet)
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003259 printf("Generating public/private %s key pair.\n",
3260 key_type_name);
markus@openbsd.org2c557442019-11-12 19:33:08 +00003261 switch (type) {
3262 case KEY_ECDSA_SK:
3263 case KEY_ED25519_SK:
Damien Miller764d51e2019-11-01 13:34:49 +11003264#ifndef ENABLE_SK
3265 fatal("Security key support was disabled at compile time");
3266#else /* ENABLE_SK */
markus@openbsd.org2c557442019-11-12 19:33:08 +00003267 if (sshsk_enroll(type, sk_provider,
3268 cert_key_id == NULL ? "ssh:" : cert_key_id,
3269 sk_flags, NULL, &private, NULL) != 0)
3270 exit(1); /* error message already printed */
3271 break;
Damien Miller764d51e2019-11-01 13:34:49 +11003272#endif /* ENABLE_SK */
markus@openbsd.org2c557442019-11-12 19:33:08 +00003273 default:
3274 if ((r = sshkey_generate(type, bits, &private)) != 0)
3275 fatal("sshkey_generate failed");
3276 break;
3277 }
djm@openbsd.org3038a192015-04-17 13:19:22 +00003278 if ((r = sshkey_from_private(private, &public)) != 0)
markus@openbsd.org7da5df12017-05-30 14:16:41 +00003279 fatal("sshkey_from_private failed: %s\n", ssh_err(r));
Damien Miller95def091999-11-25 00:26:21 +11003280
3281 if (!have_identity)
3282 ask_filename(pw, "Enter file in which to save the key");
3283
Damien Miller788f2122005-11-05 15:14:59 +11003284 /* Create ~/.ssh directory if it doesn't already exist. */
Damien Miller50af79b2010-05-10 11:52:00 +10003285 snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
3286 pw->pw_dir, _PATH_SSH_USER_DIR);
3287 if (strstr(identity_file, dotsshdir) != NULL) {
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00003288 if (stat(dotsshdir, &st) == -1) {
Damien Miller50af79b2010-05-10 11:52:00 +10003289 if (errno != ENOENT) {
3290 error("Could not stat %s: %s", dotsshdir,
3291 strerror(errno));
deraadt@openbsd.org4d28fa72019-06-28 13:35:04 +00003292 } else if (mkdir(dotsshdir, 0700) == -1) {
Damien Miller50af79b2010-05-10 11:52:00 +10003293 error("Could not create directory '%s': %s",
3294 dotsshdir, strerror(errno));
3295 } else if (!quiet)
3296 printf("Created directory '%s'.\n", dotsshdir);
3297 }
Damien Miller95def091999-11-25 00:26:21 +11003298 }
3299 /* If the file already exists, ask the user to confirm. */
djm@openbsd.org85443f12019-09-03 08:27:52 +00003300 if (!confirm_overwrite(identity_file))
3301 exit(1);
Damien Miller95def091999-11-25 00:26:21 +11003302 /* Ask for a passphrase (twice). */
3303 if (identity_passphrase)
3304 passphrase1 = xstrdup(identity_passphrase);
3305 else if (identity_new_passphrase)
3306 passphrase1 = xstrdup(identity_new_passphrase);
3307 else {
3308passphrase_again:
3309 passphrase1 =
Ben Lindstrom949974b2001-06-25 05:20:31 +00003310 read_passphrase("Enter passphrase (empty for no "
3311 "passphrase): ", RP_ALLOW_STDIN);
3312 passphrase2 = read_passphrase("Enter same passphrase again: ",
3313 RP_ALLOW_STDIN);
Damien Miller95def091999-11-25 00:26:21 +11003314 if (strcmp(passphrase1, passphrase2) != 0) {
Ben Lindstrom949974b2001-06-25 05:20:31 +00003315 /*
3316 * The passphrases do not match. Clear them and
3317 * retry.
3318 */
Damien Millera5103f42014-02-04 11:20:14 +11003319 explicit_bzero(passphrase1, strlen(passphrase1));
3320 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10003321 free(passphrase1);
3322 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11003323 printf("Passphrases do not match. Try again.\n");
3324 goto passphrase_again;
3325 }
3326 /* Clear the other copy of the passphrase. */
Damien Millera5103f42014-02-04 11:20:14 +11003327 explicit_bzero(passphrase2, strlen(passphrase2));
Darren Tuckera627d422013-06-02 07:31:17 +10003328 free(passphrase2);
Damien Miller95def091999-11-25 00:26:21 +11003329 }
3330
Damien Miller95def091999-11-25 00:26:21 +11003331 if (identity_comment) {
3332 strlcpy(comment, identity_comment, sizeof(comment));
3333 } else {
Darren Tuckere15fb092008-11-11 16:31:43 +11003334 /* Create default comment field for the passphrase. */
Damien Miller95def091999-11-25 00:26:21 +11003335 snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
3336 }
3337
3338 /* Save the key with the given passphrase and comment. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003339 if ((r = sshkey_save_private(private, identity_file, passphrase1,
djm@openbsd.orgeb0d8e72019-07-15 13:16:29 +00003340 comment, private_key_format, openssh_format_cipher, rounds)) != 0) {
djm@openbsd.org3038a192015-04-17 13:19:22 +00003341 error("Saving key \"%s\" failed: %s",
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003342 identity_file, ssh_err(r));
Damien Millera5103f42014-02-04 11:20:14 +11003343 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10003344 free(passphrase1);
Damien Miller95def091999-11-25 00:26:21 +11003345 exit(1);
3346 }
3347 /* Clear the passphrase. */
Damien Millera5103f42014-02-04 11:20:14 +11003348 explicit_bzero(passphrase1, strlen(passphrase1));
Darren Tuckera627d422013-06-02 07:31:17 +10003349 free(passphrase1);
Damien Miller95def091999-11-25 00:26:21 +11003350
3351 /* Clear the private key and the random number generator. */
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003352 sshkey_free(private);
Damien Miller95def091999-11-25 00:26:21 +11003353
3354 if (!quiet)
3355 printf("Your identification has been saved in %s.\n", identity_file);
3356
Damien Miller95def091999-11-25 00:26:21 +11003357 strlcat(identity_file, ".pub", sizeof(identity_file));
djm@openbsd.org3038a192015-04-17 13:19:22 +00003358 if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
3359 fatal("Unable to save public key to %s: %s",
3360 identity_file, strerror(errno));
3361 if ((f = fdopen(fd, "w")) == NULL)
3362 fatal("fdopen %s failed: %s", identity_file, strerror(errno));
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003363 if ((r = sshkey_write(public, f)) != 0)
djm@openbsd.org3038a192015-04-17 13:19:22 +00003364 error("write key failed: %s", ssh_err(r));
Damien Millereba71ba2000-04-29 23:57:08 +10003365 fprintf(f, " %s\n", comment);
djm@openbsd.orgb56ac062018-02-10 05:43:26 +00003366 if (ferror(f) || fclose(f) != 0)
3367 fatal("write public failed: %s", strerror(errno));
Damien Miller95def091999-11-25 00:26:21 +11003368
3369 if (!quiet) {
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00003370 fp = sshkey_fingerprint(public, fingerprint_hash,
djm@openbsd.org56d1c832014-12-21 22:27:55 +00003371 SSH_FP_DEFAULT);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00003372 ra = sshkey_fingerprint(public, fingerprint_hash,
Darren Tucker9c16ac92008-06-13 04:40:35 +10003373 SSH_FP_RANDOMART);
djm@openbsd.org9ce86c92015-01-28 22:36:00 +00003374 if (fp == NULL || ra == NULL)
3375 fatal("sshkey_fingerprint failed");
Damien Millereba71ba2000-04-29 23:57:08 +10003376 printf("Your public key has been saved in %s.\n",
3377 identity_file);
Damien Miller95def091999-11-25 00:26:21 +11003378 printf("The key fingerprint is:\n");
Ben Lindstromcfccef92001-03-13 04:57:58 +00003379 printf("%s %s\n", fp, comment);
Darren Tucker9c16ac92008-06-13 04:40:35 +10003380 printf("The key's randomart image is:\n");
3381 printf("%s\n", ra);
Darren Tuckera627d422013-06-02 07:31:17 +10003382 free(ra);
3383 free(fp);
Damien Miller95def091999-11-25 00:26:21 +11003384 }
Damien Millereba71ba2000-04-29 23:57:08 +10003385
djm@openbsd.org1129dcf2015-01-15 09:40:00 +00003386 sshkey_free(public);
Damien Miller95def091999-11-25 00:26:21 +11003387 exit(0);
Damien Millerd4a8b7e1999-10-27 13:42:43 +10003388}