1 /* $OpenBSD: sshkey.h,v 1.5 2015/01/26 02:59:11 djm Exp $ */
4 * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/types.h>
32 #include <openssl/rsa.h>
33 #include <openssl/dsa.h>
34 # ifdef OPENSSL_HAS_ECC
35 # include <openssl/ec.h>
36 # else /* OPENSSL_HAS_ECC */
38 # define EC_GROUP void
39 # define EC_POINT void
40 # endif /* OPENSSL_HAS_ECC */
41 #else /* WITH_OPENSSL */
45 # define EC_GROUP void
46 # define EC_POINT void
47 #endif /* WITH_OPENSSL */
49 #define SSH_RSA_MINIMUM_MODULUS_SIZE 768
50 #define SSH_KEY_MAX_SIGN_DATA_SIZE (1 << 20)
70 /* Default fingerprint hash */
71 #define SSH_FP_HASH_DEFAULT SSH_DIGEST_SHA256
73 /* Fingerprint representation formats */
82 /* key is stored in external hardware */
83 #define SSHKEY_FLAG_EXT 0x0001
85 #define SSHKEY_CERT_MAX_PRINCIPALS 256
88 struct sshbuf *certblob; /* Kept around for use on wire */
89 u_int type; /* SSH2_CERT_TYPE_USER or SSH2_CERT_TYPE_HOST */
94 u_int64_t valid_after, valid_before;
95 struct sshbuf *critical;
96 struct sshbuf *extensions;
97 struct sshkey *signature_key;
106 int ecdsa_nid; /* NID of curve */
110 struct sshkey_cert *cert;
113 #define ED25519_SK_SZ crypto_sign_ed25519_SECRETKEYBYTES
114 #define ED25519_PK_SZ crypto_sign_ed25519_PUBLICKEYBYTES
116 struct sshkey *sshkey_new(int);
117 int sshkey_add_private(struct sshkey *);
118 struct sshkey *sshkey_new_private(int);
119 void sshkey_free(struct sshkey *);
120 int sshkey_demote(const struct sshkey *, struct sshkey **);
121 int sshkey_equal_public(const struct sshkey *,
122 const struct sshkey *);
123 int sshkey_equal(const struct sshkey *, const struct sshkey *);
124 char *sshkey_fingerprint(const struct sshkey *,
125 int, enum sshkey_fp_rep);
126 int sshkey_fingerprint_raw(const struct sshkey *k,
127 int, u_char **retp, size_t *lenp);
128 const char *sshkey_type(const struct sshkey *);
129 const char *sshkey_cert_type(const struct sshkey *);
130 int sshkey_write(const struct sshkey *, FILE *);
131 int sshkey_read(struct sshkey *, char **);
132 u_int sshkey_size(const struct sshkey *);
134 int sshkey_generate(int type, u_int bits, struct sshkey **keyp);
135 int sshkey_from_private(const struct sshkey *, struct sshkey **);
136 int sshkey_type_from_name(const char *);
137 int sshkey_is_cert(const struct sshkey *);
138 int sshkey_type_is_cert(int);
139 int sshkey_type_plain(int);
140 int sshkey_to_certified(struct sshkey *, int);
141 int sshkey_drop_cert(struct sshkey *);
142 int sshkey_certify(struct sshkey *, struct sshkey *);
143 int sshkey_cert_copy(const struct sshkey *, struct sshkey *);
144 int sshkey_cert_check_authority(const struct sshkey *, int, int,
145 const char *, const char **);
146 int sshkey_cert_is_legacy(const struct sshkey *);
148 int sshkey_ecdsa_nid_from_name(const char *);
149 int sshkey_curve_name_to_nid(const char *);
150 const char * sshkey_curve_nid_to_name(int);
151 u_int sshkey_curve_nid_to_bits(int);
152 int sshkey_ecdsa_bits_to_nid(int);
153 int sshkey_ecdsa_key_to_nid(EC_KEY *);
154 int sshkey_ec_nid_to_hash_alg(int nid);
155 int sshkey_ec_validate_public(const EC_GROUP *, const EC_POINT *);
156 int sshkey_ec_validate_private(const EC_KEY *);
157 const char *sshkey_ssh_name(const struct sshkey *);
158 const char *sshkey_ssh_name_plain(const struct sshkey *);
159 int sshkey_names_valid2(const char *, int);
160 char *key_alg_list(int, int);
162 int sshkey_from_blob(const u_char *, size_t, struct sshkey **);
163 int sshkey_fromb(struct sshbuf *, struct sshkey **);
164 int sshkey_froms(struct sshbuf *, struct sshkey **);
165 int sshkey_to_blob(const struct sshkey *, u_char **, size_t *);
166 int sshkey_putb(const struct sshkey *, struct sshbuf *);
167 int sshkey_puts(const struct sshkey *, struct sshbuf *);
168 int sshkey_plain_to_blob(const struct sshkey *, u_char **, size_t *);
169 int sshkey_putb_plain(const struct sshkey *, struct sshbuf *);
171 int sshkey_sign(const struct sshkey *, u_char **, size_t *,
172 const u_char *, size_t, u_int);
173 int sshkey_verify(const struct sshkey *, const u_char *, size_t,
174 const u_char *, size_t, u_int);
177 void sshkey_dump_ec_point(const EC_GROUP *, const EC_POINT *);
178 void sshkey_dump_ec_key(const EC_KEY *);
180 /* private key parsing and serialisation */
181 int sshkey_private_serialize(const struct sshkey *key, struct sshbuf *buf);
182 int sshkey_private_deserialize(struct sshbuf *buf, struct sshkey **keyp);
184 /* private key file format parsing and serialisation */
185 int sshkey_private_to_fileblob(struct sshkey *key, struct sshbuf *blob,
186 const char *passphrase, const char *comment,
187 int force_new_format, const char *new_format_cipher, int new_format_rounds);
188 int sshkey_parse_public_rsa1_fileblob(struct sshbuf *blob,
189 struct sshkey **keyp, char **commentp);
190 int sshkey_parse_private_fileblob(struct sshbuf *buffer,
191 const char *passphrase, const char *filename, struct sshkey **keyp,
193 int sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type,
194 const char *passphrase, struct sshkey **keyp, char **commentp);
196 #ifdef SSHKEY_INTERNAL
197 int ssh_rsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
198 const u_char *data, size_t datalen, u_int compat);
199 int ssh_rsa_verify(const struct sshkey *key,
200 const u_char *signature, size_t signaturelen,
201 const u_char *data, size_t datalen, u_int compat);
202 int ssh_dss_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
203 const u_char *data, size_t datalen, u_int compat);
204 int ssh_dss_verify(const struct sshkey *key,
205 const u_char *signature, size_t signaturelen,
206 const u_char *data, size_t datalen, u_int compat);
207 int ssh_ecdsa_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
208 const u_char *data, size_t datalen, u_int compat);
209 int ssh_ecdsa_verify(const struct sshkey *key,
210 const u_char *signature, size_t signaturelen,
211 const u_char *data, size_t datalen, u_int compat);
212 int ssh_ed25519_sign(const struct sshkey *key, u_char **sigp, size_t *lenp,
213 const u_char *data, size_t datalen, u_int compat);
214 int ssh_ed25519_verify(const struct sshkey *key,
215 const u_char *signature, size_t signaturelen,
216 const u_char *data, size_t datalen, u_int compat);
219 #if !defined(WITH_OPENSSL)
225 #elif !defined(OPENSSL_HAS_ECC)
231 #endif /* SSHKEY_H */