1 /* $OpenBSD: authfile.c,v 1.92 2011/06/14 22:49:18 markus Exp $ */
3 * Author: Tatu Ylonen <ylo@cs.hut.fi>
4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * This file contains functions for reading and writing identity files, and
7 * for reading the passphrase from the user.
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose. Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
16 * Copyright (c) 2000 Markus Friedl. All rights reserved.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
29 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 #include <sys/types.h>
43 #include <sys/param.h>
46 #include <openssl/err.h>
47 #include <openssl/evp.h>
48 #include <openssl/pem.h>
50 /* compatibility with old or broken OpenSSL versions */
51 #include "openbsd-compat/openssl-compat.h"
71 #include "pathnames.h"
73 #define MAX_KEY_FILE_SIZE (1024 * 1024)
75 /* Version identification string for SSH v1 identity files. */
76 static const char authfile_id_string[] =
77 "SSH PRIVATE KEY FILE FORMAT 1.1\n";
80 * Serialises the authentication (private) key to a blob, encrypting it with
81 * passphrase. The identification of the blob (lowest 64 bits of n) will
82 * precede the key to provide identification of the key without needing a
86 key_private_rsa1_to_blob(Key *key, Buffer *blob, const char *passphrase,
89 Buffer buffer, encrypted;
92 CipherContext ciphercontext;
97 * If the passphrase is empty, use SSH_CIPHER_NONE to ease converting
98 * to another cipher; otherwise use SSH_AUTHFILE_CIPHER.
100 cipher_num = (strcmp(passphrase, "") == 0) ?
101 SSH_CIPHER_NONE : SSH_AUTHFILE_CIPHER;
102 if ((cipher = cipher_by_number(cipher_num)) == NULL)
103 fatal("save_private_key_rsa: bad cipher");
105 /* This buffer is used to built the secret part of the private key. */
106 buffer_init(&buffer);
108 /* Put checkbytes for checking passphrase validity. */
111 buf[1] = (rnd >> 8) & 0xff;
114 buffer_append(&buffer, buf, 4);
117 * Store the private key (n and e will not be stored because they
118 * will be stored in plain text, and storing them also in encrypted
119 * format would just give known plaintext).
121 buffer_put_bignum(&buffer, key->rsa->d);
122 buffer_put_bignum(&buffer, key->rsa->iqmp);
123 buffer_put_bignum(&buffer, key->rsa->q); /* reverse from SSL p */
124 buffer_put_bignum(&buffer, key->rsa->p); /* reverse from SSL q */
126 /* Pad the part to be encrypted until its size is a multiple of 8. */
127 while (buffer_len(&buffer) % 8 != 0)
128 buffer_put_char(&buffer, 0);
130 /* This buffer will be used to contain the data in the file. */
131 buffer_init(&encrypted);
133 /* First store keyfile id string. */
134 for (i = 0; authfile_id_string[i]; i++)
135 buffer_put_char(&encrypted, authfile_id_string[i]);
136 buffer_put_char(&encrypted, 0);
138 /* Store cipher type. */
139 buffer_put_char(&encrypted, cipher_num);
140 buffer_put_int(&encrypted, 0); /* For future extension */
142 /* Store public key. This will be in plain text. */
143 buffer_put_int(&encrypted, BN_num_bits(key->rsa->n));
144 buffer_put_bignum(&encrypted, key->rsa->n);
145 buffer_put_bignum(&encrypted, key->rsa->e);
146 buffer_put_cstring(&encrypted, comment);
148 /* Allocate space for the private part of the key in the buffer. */
149 cp = buffer_append_space(&encrypted, buffer_len(&buffer));
151 cipher_set_key_string(&ciphercontext, cipher, passphrase,
153 cipher_crypt(&ciphercontext, cp,
154 buffer_ptr(&buffer), buffer_len(&buffer));
155 cipher_cleanup(&ciphercontext);
156 memset(&ciphercontext, 0, sizeof(ciphercontext));
158 /* Destroy temporary data. */
159 memset(buf, 0, sizeof(buf));
160 buffer_free(&buffer);
162 buffer_append(blob, buffer_ptr(&encrypted), buffer_len(&encrypted));
163 buffer_free(&encrypted);
168 /* convert SSH v2 key in OpenSSL PEM format */
170 key_private_pem_to_blob(Key *key, Buffer *blob, const char *_passphrase,
174 int blen, len = strlen(_passphrase);
175 u_char *passphrase = (len > 0) ? (u_char *)_passphrase : NULL;
176 #if (OPENSSL_VERSION_NUMBER < 0x00907000L)
177 const EVP_CIPHER *cipher = (len > 0) ? EVP_des_ede3_cbc() : NULL;
179 const EVP_CIPHER *cipher = (len > 0) ? EVP_aes_128_cbc() : NULL;
184 if (len > 0 && len <= 4) {
185 error("passphrase too short: have %d bytes, need > 4", len);
188 if ((bio = BIO_new(BIO_s_mem())) == NULL) {
189 error("%s: BIO_new failed", __func__);
194 success = PEM_write_bio_DSAPrivateKey(bio, key->dsa,
195 cipher, passphrase, len, NULL, NULL);
197 #ifdef OPENSSL_HAS_ECC
199 success = PEM_write_bio_ECPrivateKey(bio, key->ecdsa,
200 cipher, passphrase, len, NULL, NULL);
204 success = PEM_write_bio_RSAPrivateKey(bio, key->rsa,
205 cipher, passphrase, len, NULL, NULL);
209 if ((blen = BIO_get_mem_data(bio, &bptr)) <= 0)
212 buffer_append(blob, bptr, blen);
218 /* Save a key blob to a file */
220 key_save_private_blob(Buffer *keybuf, const char *filename)
224 if ((fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600)) < 0) {
225 error("open %s failed: %s.", filename, strerror(errno));
228 if (atomicio(vwrite, fd, buffer_ptr(keybuf),
229 buffer_len(keybuf)) != buffer_len(keybuf)) {
230 error("write to key file %s failed: %s", filename,
240 /* Serialise "key" to buffer "blob" */
242 key_private_to_blob(Key *key, Buffer *blob, const char *passphrase,
247 return key_private_rsa1_to_blob(key, blob, passphrase, comment);
251 return key_private_pem_to_blob(key, blob, passphrase, comment);
253 error("%s: cannot save key type %d", __func__, key->type);
259 key_save_private(Key *key, const char *filename, const char *passphrase,
265 buffer_init(&keyblob);
266 if (!key_private_to_blob(key, &keyblob, passphrase, comment))
268 if (!key_save_private_blob(&keyblob, filename))
272 buffer_free(&keyblob);
277 * Parse the public, unencrypted portion of a RSA1 key.
280 key_parse_public_rsa1(Buffer *blob, char **commentp)
285 /* Check that it is at least big enough to contain the ID string. */
286 if (buffer_len(blob) < sizeof(authfile_id_string)) {
287 debug3("Truncated RSA1 identifier");
292 * Make sure it begins with the id string. Consume the id string
295 if (memcmp(buffer_ptr(blob), authfile_id_string,
296 sizeof(authfile_id_string)) != 0) {
297 debug3("Incorrect RSA1 identifier");
301 buffer_append(©, buffer_ptr(blob), buffer_len(blob));
302 buffer_consume(©, sizeof(authfile_id_string));
304 /* Skip cipher type and reserved data. */
305 (void) buffer_get_char(©); /* cipher type */
306 (void) buffer_get_int(©); /* reserved */
308 /* Read the public key from the buffer. */
309 (void) buffer_get_int(©);
310 pub = key_new(KEY_RSA1);
311 buffer_get_bignum(©, pub->rsa->n);
312 buffer_get_bignum(©, pub->rsa->e);
314 *commentp = buffer_get_string(©, NULL);
315 /* The encrypted private part is not parsed by this function. */
321 /* Load a key from a fd into a buffer */
323 key_load_file(int fd, const char *filename, Buffer *blob)
329 if (fstat(fd, &st) < 0) {
330 error("%s: fstat of key file %.200s%sfailed: %.100s", __func__,
331 filename == NULL ? "" : filename,
332 filename == NULL ? "" : " ",
336 if ((st.st_mode & (S_IFSOCK|S_IFCHR|S_IFIFO)) == 0 &&
337 st.st_size > MAX_KEY_FILE_SIZE) {
339 error("%s: key file %.200s%stoo large", __func__,
340 filename == NULL ? "" : filename,
341 filename == NULL ? "" : " ");
346 if ((len = atomicio(read, fd, buf, sizeof(buf))) == 0) {
349 debug("%s: read from key file %.200s%sfailed: %.100s",
350 __func__, filename == NULL ? "" : filename,
351 filename == NULL ? "" : " ", strerror(errno));
353 bzero(buf, sizeof(buf));
356 buffer_append(blob, buf, len);
357 if (buffer_len(blob) > MAX_KEY_FILE_SIZE) {
359 bzero(buf, sizeof(buf));
363 bzero(buf, sizeof(buf));
364 if ((st.st_mode & (S_IFSOCK|S_IFCHR|S_IFIFO)) == 0 &&
365 st.st_size != buffer_len(blob)) {
366 debug("%s: key file %.200s%schanged size while reading",
367 __func__, filename == NULL ? "" : filename,
368 filename == NULL ? "" : " ");
377 * Loads the public part of the ssh v1 key file. Returns NULL if an error was
378 * encountered (the file does not exist or is not readable), and the key
382 key_load_public_rsa1(int fd, const char *filename, char **commentp)
387 buffer_init(&buffer);
388 if (!key_load_file(fd, filename, &buffer)) {
389 buffer_free(&buffer);
393 pub = key_parse_public_rsa1(&buffer, commentp);
395 debug3("Could not load \"%s\" as a RSA1 public key", filename);
396 buffer_free(&buffer);
400 /* load public key from private-key file, works only for SSH v1 */
402 key_load_public_type(int type, const char *filename, char **commentp)
407 if (type == KEY_RSA1) {
408 fd = open(filename, O_RDONLY);
411 pub = key_load_public_rsa1(fd, filename, commentp);
419 key_parse_private_rsa1(Buffer *blob, const char *passphrase, char **commentp)
421 int check1, check2, cipher_type;
424 CipherContext ciphercontext;
429 /* Check that it is at least big enough to contain the ID string. */
430 if (buffer_len(blob) < sizeof(authfile_id_string)) {
431 debug3("Truncated RSA1 identifier");
436 * Make sure it begins with the id string. Consume the id string
439 if (memcmp(buffer_ptr(blob), authfile_id_string,
440 sizeof(authfile_id_string)) != 0) {
441 debug3("Incorrect RSA1 identifier");
445 buffer_append(©, buffer_ptr(blob), buffer_len(blob));
446 buffer_consume(©, sizeof(authfile_id_string));
448 /* Read cipher type. */
449 cipher_type = buffer_get_char(©);
450 (void) buffer_get_int(©); /* Reserved data. */
452 /* Read the public key from the buffer. */
453 (void) buffer_get_int(©);
454 prv = key_new_private(KEY_RSA1);
456 buffer_get_bignum(©, prv->rsa->n);
457 buffer_get_bignum(©, prv->rsa->e);
459 *commentp = buffer_get_string(©, NULL);
461 (void)buffer_get_string_ptr(©, NULL);
463 /* Check that it is a supported cipher. */
464 cipher = cipher_by_number(cipher_type);
465 if (cipher == NULL) {
466 debug("Unsupported RSA1 cipher %d", cipher_type);
470 /* Initialize space for decrypted data. */
471 buffer_init(&decrypted);
472 cp = buffer_append_space(&decrypted, buffer_len(©));
474 /* Rest of the buffer is encrypted. Decrypt it using the passphrase. */
475 cipher_set_key_string(&ciphercontext, cipher, passphrase,
477 cipher_crypt(&ciphercontext, cp,
478 buffer_ptr(©), buffer_len(©));
479 cipher_cleanup(&ciphercontext);
480 memset(&ciphercontext, 0, sizeof(ciphercontext));
483 check1 = buffer_get_char(&decrypted);
484 check2 = buffer_get_char(&decrypted);
485 if (check1 != buffer_get_char(&decrypted) ||
486 check2 != buffer_get_char(&decrypted)) {
487 if (strcmp(passphrase, "") != 0)
488 debug("Bad passphrase supplied for RSA1 key");
489 /* Bad passphrase. */
490 buffer_free(&decrypted);
493 /* Read the rest of the private key. */
494 buffer_get_bignum(&decrypted, prv->rsa->d);
495 buffer_get_bignum(&decrypted, prv->rsa->iqmp); /* u */
496 /* in SSL and SSH v1 p and q are exchanged */
497 buffer_get_bignum(&decrypted, prv->rsa->q); /* p */
498 buffer_get_bignum(&decrypted, prv->rsa->p); /* q */
500 /* calculate p-1 and q-1 */
501 rsa_generate_additional_parameters(prv->rsa);
503 buffer_free(&decrypted);
505 /* enable blinding */
506 if (RSA_blinding_on(prv->rsa, NULL) != 1) {
507 error("%s: RSA_blinding_on failed", __func__);
520 key_parse_private_pem(Buffer *blob, int type, const char *passphrase,
525 char *name = "<no key>";
528 if ((bio = BIO_new_mem_buf(buffer_ptr(blob),
529 buffer_len(blob))) == NULL) {
530 error("%s: BIO_new_mem_buf failed", __func__);
534 pk = PEM_read_bio_PrivateKey(bio, NULL, NULL, (char *)passphrase);
537 debug("%s: PEM_read_PrivateKey failed", __func__);
538 (void)ERR_get_error();
539 } else if (pk->type == EVP_PKEY_RSA &&
540 (type == KEY_UNSPEC||type==KEY_RSA)) {
541 prv = key_new(KEY_UNSPEC);
542 prv->rsa = EVP_PKEY_get1_RSA(pk);
544 name = "rsa w/o comment";
546 RSA_print_fp(stderr, prv->rsa, 8);
548 if (RSA_blinding_on(prv->rsa, NULL) != 1) {
549 error("%s: RSA_blinding_on failed", __func__);
553 } else if (pk->type == EVP_PKEY_DSA &&
554 (type == KEY_UNSPEC||type==KEY_DSA)) {
555 prv = key_new(KEY_UNSPEC);
556 prv->dsa = EVP_PKEY_get1_DSA(pk);
558 name = "dsa w/o comment";
560 DSA_print_fp(stderr, prv->dsa, 8);
562 #ifdef OPENSSL_HAS_ECC
563 } else if (pk->type == EVP_PKEY_EC &&
564 (type == KEY_UNSPEC||type==KEY_ECDSA)) {
565 prv = key_new(KEY_UNSPEC);
566 prv->ecdsa = EVP_PKEY_get1_EC_KEY(pk);
567 prv->type = KEY_ECDSA;
568 if ((prv->ecdsa_nid = key_ecdsa_key_to_nid(prv->ecdsa)) == -1 ||
569 key_curve_nid_to_name(prv->ecdsa_nid) == NULL ||
570 key_ec_validate_public(EC_KEY_get0_group(prv->ecdsa),
571 EC_KEY_get0_public_key(prv->ecdsa)) != 0 ||
572 key_ec_validate_private(prv->ecdsa) != 0) {
573 error("%s: bad ECDSA key", __func__);
577 name = "ecdsa w/o comment";
579 if (prv != NULL && prv->ecdsa != NULL)
580 key_dump_ec_key(prv->ecdsa);
582 #endif /* OPENSSL_HAS_ECC */
584 error("%s: PEM_read_PrivateKey: mismatch or "
585 "unknown EVP_PKEY save_type %d", __func__, pk->save_type);
589 if (prv != NULL && commentp)
590 *commentp = xstrdup(name);
591 debug("read PEM private key done: type %s",
592 prv ? key_type(prv) : "<unknown>");
597 key_load_private_pem(int fd, int type, const char *passphrase,
603 buffer_init(&buffer);
604 if (!key_load_file(fd, NULL, &buffer)) {
605 buffer_free(&buffer);
608 prv = key_parse_private_pem(&buffer, type, passphrase, commentp);
609 buffer_free(&buffer);
614 key_perm_ok(int fd, const char *filename)
618 if (fstat(fd, &st) < 0)
621 * if a key owned by the user is accessed, then we check the
622 * permissions of the file. if the key owned by a different user,
623 * then we don't care.
626 if (check_ntsec(filename))
628 if ((st.st_uid == getuid()) && (st.st_mode & 077) != 0) {
629 error("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
630 error("@ WARNING: UNPROTECTED PRIVATE KEY FILE! @");
631 error("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
632 error("Permissions 0%3.3o for '%s' are too open.",
633 (u_int)st.st_mode & 0777, filename);
634 error("It is required that your private key files are NOT accessible by others.");
635 error("This private key will be ignored.");
642 key_parse_private_type(Buffer *blob, int type, const char *passphrase,
647 return key_parse_private_rsa1(blob, passphrase, commentp);
652 return key_parse_private_pem(blob, type, passphrase, commentp);
654 error("%s: cannot parse key type %d", __func__, type);
661 key_load_private_type(int type, const char *filename, const char *passphrase,
662 char **commentp, int *perm_ok)
668 fd = open(filename, O_RDONLY);
670 debug("could not open key file '%s': %s", filename,
676 if (!key_perm_ok(fd, filename)) {
679 error("bad permissions: ignore key: %s", filename);
686 buffer_init(&buffer);
687 if (!key_load_file(fd, filename, &buffer)) {
688 buffer_free(&buffer);
693 ret = key_parse_private_type(&buffer, type, passphrase, commentp);
694 buffer_free(&buffer);
699 key_parse_private(Buffer *buffer, const char *filename,
700 const char *passphrase, char **commentp)
704 /* it's a SSH v1 key if the public key part is readable */
705 pub = key_parse_public_rsa1(buffer, commentp);
707 prv = key_parse_private_type(buffer, KEY_UNSPEC,
709 /* use the filename as a comment for PEM */
711 *commentp = xstrdup(filename);
714 /* key_parse_public_rsa1() has already loaded the comment */
715 prv = key_parse_private_type(buffer, KEY_RSA1, passphrase,
722 key_load_private(const char *filename, const char *passphrase,
729 fd = open(filename, O_RDONLY);
731 debug("could not open key file '%s': %s", filename,
735 if (!key_perm_ok(fd, filename)) {
736 error("bad permissions: ignore key: %s", filename);
741 buffer_init(&buffer);
742 if (!key_load_file(fd, filename, &buffer)) {
743 buffer_free(&buffer);
749 prv = key_parse_private(&buffer, filename, passphrase, commentp);
750 buffer_free(&buffer);
755 key_try_load_public(Key *k, const char *filename, char **commentp)
758 char line[SSH_MAX_PUBKEY_BYTES];
762 f = fopen(filename, "r");
764 while (read_keyfile_line(f, filename, line, sizeof(line),
773 /* Abort loading if this looks like a private key */
774 if (strncmp(cp, "-----BEGIN", 10) == 0)
776 /* Skip leading whitespace. */
777 for (; *cp && (*cp == ' ' || *cp == '\t'); cp++)
780 if (key_read(k, &cp) == 1) {
781 cp[strcspn(cp, "\r\n")] = '\0';
783 *commentp = xstrdup(*cp ?
796 /* load public key from ssh v1 private or any pubkey file */
798 key_load_public(const char *filename, char **commentp)
801 char file[MAXPATHLEN];
803 /* try rsa1 private key */
804 pub = key_load_public_type(KEY_RSA1, filename, commentp);
808 /* try rsa1 public key */
809 pub = key_new(KEY_RSA1);
810 if (key_try_load_public(pub, filename, commentp) == 1)
814 /* try ssh2 public key */
815 pub = key_new(KEY_UNSPEC);
816 if (key_try_load_public(pub, filename, commentp) == 1)
818 if ((strlcpy(file, filename, sizeof file) < sizeof(file)) &&
819 (strlcat(file, ".pub", sizeof file) < sizeof(file)) &&
820 (key_try_load_public(pub, file, commentp) == 1))
827 blacklist_filename(const Key *key)
831 xasprintf(&name, "%s.%s-%u",
832 _PATH_BLACKLIST, key_type(key), key_size(key));
836 /* Scan a blacklist of known-vulnerable keys. */
838 blacklisted_key(Key *key)
840 char *blacklist_file;
842 char *dgst_hex = NULL;
843 char *dgst_packed = NULL, *p;
848 off_t start, lower, upper;
851 blacklist_file = blacklist_filename(key);
852 debug("Checking blacklist file %s", blacklist_file);
853 fd = open(blacklist_file, O_RDONLY);
857 dgst_hex = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX);
858 /* Remove all colons */
859 dgst_packed = xcalloc(1, strlen(dgst_hex) + 1);
860 for (i = 0, p = dgst_packed; dgst_hex[i]; i++)
861 if (dgst_hex[i] != ':')
863 /* Only compare least-significant 80 bits (to keep the blacklist
866 line_len = strlen(dgst_packed + 12);
870 /* Skip leading comments */
876 r = atomicio(read, fd, buf, 256);
882 newline = memchr(buf, '\n', 256);
885 start += newline + 1 - buf;
886 if (lseek(fd, start, SEEK_SET) < 0)
890 /* Initialise binary search record numbers */
891 if (fstat(fd, &st) < 0)
894 upper = (st.st_size - start) / (line_len + 1);
896 while (lower != upper) {
901 cur = lower + (upper - lower) / 2;
903 /* Read this line and compare to digest; this is
904 * overflow-safe since cur < max(off_t) / (line_len + 1) */
905 if (lseek(fd, start + cur * (line_len + 1), SEEK_SET) < 0)
907 if (atomicio(read, fd, buf, line_len) != line_len)
909 cmp = memcmp(buf, dgst_packed + 12, line_len);
914 } else if (cmp > 0) {
919 debug("Found %s in blacklist", dgst_hex);
932 xfree(blacklist_file);
936 /* Load the certificate associated with the named private key */
938 key_load_cert(const char *filename)
943 pub = key_new(KEY_UNSPEC);
944 xasprintf(&file, "%s-cert.pub", filename);
945 if (key_try_load_public(pub, file, NULL) == 1) {
954 /* Load private key and certificate */
956 key_load_private_cert(int type, const char *filename, const char *passphrase,
967 error("%s: unsupported key type", __func__);
971 if ((key = key_load_private_type(type, filename,
972 passphrase, NULL, perm_ok)) == NULL)
975 if ((pub = key_load_cert(filename)) == NULL) {
980 /* Make sure the private key matches the certificate */
981 if (key_equal_public(key, pub) == 0) {
982 error("%s: certificate does not match private key %s",
984 } else if (key_to_certified(key, key_cert_is_legacy(pub)) != 0) {
985 error("%s: key_to_certified failed", __func__);
987 key_cert_copy(pub, key);
998 * Returns 1 if the specified "key" is listed in the file "filename",
999 * 0 if the key is not listed or -1 on error.
1000 * If strict_type is set then the key type must match exactly,
1001 * otherwise a comparison that ignores certficiate data is performed.
1004 key_in_file(Key *key, const char *filename, int strict_type)
1007 char line[SSH_MAX_PUBKEY_BYTES];
1012 int (*key_compare)(const Key *, const Key *) = strict_type ?
1013 key_equal : key_equal_public;
1015 if ((f = fopen(filename, "r")) == NULL) {
1016 if (errno == ENOENT) {
1017 debug("%s: keyfile \"%s\" missing", __func__, filename);
1020 error("%s: could not open keyfile \"%s\": %s", __func__,
1021 filename, strerror(errno));
1026 while (read_keyfile_line(f, filename, line, sizeof(line),
1030 /* Skip leading whitespace. */
1031 for (; *cp && (*cp == ' ' || *cp == '\t'); cp++)
1034 /* Skip comments and empty lines */
1042 pub = key_new(KEY_UNSPEC);
1043 if (key_read(pub, &cp) != 1) {
1047 if (key_compare(key, pub)) {