support of multiple certificates with same peer id
[strongswan.git] / src / libstrongswan / credential_store.h
1 /**
2 * @file credential_store.h
3 *
4 * @brief Interface credential_store_t.
5 *
6 */
7
8 /*
9 * Copyright (C) 2005-2006 Martin Willi
10 * Copyright (C) 2005 Jan Hutter
11 * Hochschule fuer Technik Rapperswil
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
17 *
18 * This program is distributed in the hope that it will be useful, but
19 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
20 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 * for more details.
22 */
23
24 #ifndef CREDENTIAL_STORE_H_
25 #define CREDENTIAL_STORE_H_
26
27 typedef struct credential_store_t credential_store_t;
28
29 #include <library.h>
30 #include <crypto/x509.h>
31 #include <crypto/ca.h>
32 #include <crypto/rsa/rsa_private_key.h>
33 #include <crypto/rsa/rsa_public_key.h>
34 #include <utils/identification.h>
35
36
37 /**
38 * @brief The interface for a credential_store backend.
39 *
40 * @b Constructors:
41 * - stroke_create()
42 *
43 * @ingroup config
44 */
45 struct credential_store_t {
46
47 /**
48 * @brief Returns the secret shared by two specific IDs.
49 *
50 * The returned chunk must be destroyed by the caller after usage.
51 *
52 * @param this calling object
53 * @param my_id my ID identifiying the secret.
54 * @param other_id peer ID identifying the secret.
55 * @param[out] secret the pre-shared secret will be written there.
56 * @return
57 * - NOT_FOUND if no preshared secrets for specific ID could be found
58 * - SUCCESS
59 *
60 */
61 status_t (*get_shared_key) (credential_store_t *this, identification_t *my_id,
62 identification_t *other_id, chunk_t *shared_key);
63
64 /**
65 * @brief Returns the EAP secret for two specified IDs.
66 *
67 * The returned chunk must be destroyed by the caller after usage.
68 *
69 * @param this calling object
70 * @param my_id my ID identifiying the secret.
71 * @param other_id peer ID identifying the secret.
72 * @param[out] eap_key the EAP secret will be written here
73 * @return
74 * - NOT_FOUND if no preshared secrets for specific ID could be found
75 * - SUCCESS
76 *
77 */
78 status_t (*get_eap_key) (credential_store_t *this, identification_t *my_id,
79 identification_t *other_id, chunk_t *eap_key);
80
81 /**
82 * @brief Returns the RSA public key of a specific ID.
83 *
84 * @param this calling object
85 * @param id identification_t object identifiying the key.
86 * @return public key, or NULL if not found
87 */
88 rsa_public_key_t* (*get_rsa_public_key) (credential_store_t *this, identification_t *id);
89
90 /**
91 * @brief Returns the RSA private key belonging to an RSA public key
92 *
93 * The returned rsa_private_key_t must be destroyed by the caller after usage.
94 *
95 * @param this calling object
96 * @param pubkey public key
97 * @return private key, or NULL if not found
98 */
99 rsa_private_key_t* (*get_rsa_private_key) (credential_store_t *this, rsa_public_key_t *pubkey);
100
101 /**
102 * @brief Is there a matching RSA private key belonging to an RSA public key?
103 *
104 * @param this calling object
105 * @param pubkey public key
106 * @return TRUE if matching private key was found
107 */
108 bool (*has_rsa_private_key) (credential_store_t *this, rsa_public_key_t *pubkey);
109
110 /**
111 * @brief Returns the certificate of a specific ID.
112 *
113 * @param this calling object
114 * @param id identification_t object identifiying the cert.
115 * @return certificate, or NULL if not found
116 */
117 x509_t* (*get_certificate) (credential_store_t *this, identification_t *id);
118
119 /**
120 * @brief Returns the auth certificate of a specific subject distinguished name.
121 *
122 * @param this calling object
123 * @param auth_flags set of allowed authority types
124 * @param id identification_t object identifiying the cacert.
125 * @return certificate, or NULL if not found
126 */
127 x509_t* (*get_auth_certificate) (credential_store_t *this, u_int auth_flags, identification_t *id);
128
129 /**
130 * @brief Returns the ca certificate of a specific keyID.
131 *
132 * @param this calling object
133 * @param keyid identification_t object identifiying the cacert.
134 * @return certificate, or NULL if not found
135 */
136 x509_t* (*get_ca_certificate_by_keyid) (credential_store_t *this, chunk_t keyid);
137
138 /**
139 * @brief Returns the issuing ca of a given certificate.
140 *
141 * @param this calling object
142 * @param cert certificate for which issuer ca info is required
143 * @return ca info, or NULL if not found
144 */
145 ca_info_t* (*get_issuer) (credential_store_t *this, const x509_t* cert);
146
147 /**
148 * @brief Verify an RSA signature given the ID of the signer
149 *
150 * @param this calling object
151 * @param hash hash value to be verified.
152 * @param sig signature to be verified.
153 * @param id identification_t object identifiying the signer.
154 * @param issuer_p issuer of the signer's certificate (if not self-signed).
155 * @return status of the verification - SUCCESS if successful
156 */
157 status_t (*verify_signature) (credential_store_t *this, chunk_t hash, chunk_t sig, identification_t *id, ca_info_t **issuer_p);
158
159 /**
160 * @brief Verify an X.509 certificate up to trust anchor without any status checks
161 *
162 * @param this calling object
163 * @param cert certificate to be verified
164 * @return TRUE if trusted
165 */
166 bool (*is_trusted) (credential_store_t *this, x509_t *cert);
167
168 /**
169 * @brief Verify an X.509 certificate up to trust anchor including status checks
170 *
171 * @param this calling object
172 * @param cert certificate to be verified
173 * @param found found a certificate copy in the credential store
174 * @return TRUE if valid, trusted, and current status is good
175 */
176 bool (*verify) (credential_store_t *this, x509_t *cert, bool *found);
177
178 /**
179 * @brief If an end certificate does not already exists in the credential store then add it.
180 *
181 * @param this calling object
182 * @param cert certificate to be added
183 * @return pointer to the added or already existing certificate
184 */
185 x509_t* (*add_end_certificate) (credential_store_t *this, x509_t *cert);
186
187 /**
188 * @brief If an authority certificate does not already exists in the credential store then add it.
189 *
190 * @param this calling object
191 * @param cert authority certificate to be added
192 * @param auth_flag authority flags to add to the certificate
193 * @return pointer to the added or already existing certificate
194 */
195 x509_t* (*add_auth_certificate) (credential_store_t *this, x509_t *cert, u_int auth_flag);
196
197 /**
198 * @brief If a ca info record does not already exists in the credential store then add it.
199 *
200 * @param this calling object
201 * @param ca_info ca info record to be added
202 */
203 void (*add_ca_info) (credential_store_t *this, ca_info_t *ca_info);
204
205 /**
206 * @brief Release a ca info record with a given name.
207 *
208 * @param this calling object
209 * @param name name of the ca info record to be released
210 * @return
211 * - SUCCESS, or
212 * - NOT_FOUND
213 */
214 status_t (*release_ca_info) (credential_store_t *this, const char *name);
215
216 /**
217 * @brief Create an iterator over all end certificates.
218 *
219 * @param this calling object
220 * @return iterator
221 */
222 iterator_t* (*create_cert_iterator) (credential_store_t *this);
223
224 /**
225 * @brief Create an iterator over all authority certificates.
226 *
227 * @param this calling object
228 * @return iterator
229 */
230 iterator_t* (*create_auth_cert_iterator) (credential_store_t *this);
231
232 /**
233 * @brief Create an iterator over all CA info records
234 *
235 * @param this calling object
236 * @return iterator
237 */
238 iterator_t* (*create_cainfo_iterator) (credential_store_t *this);
239
240 /**
241 * @brief Loads ca certificates from a default directory.
242 *
243 * Certificates in both DER and PEM format are accepted
244 *
245 * @param this calling object
246 */
247 void (*load_ca_certificates) (credential_store_t *this);
248
249 /**
250 * @brief Loads authorization authority certificates from a default directory.
251 *
252 * Certificates in both DER and PEM format are accepted
253 *
254 * @param this calling object
255 */
256 void (*load_aa_certificates) (credential_store_t *this);
257
258 /**
259 * @brief Loads attribute certificates from a default directory.
260 *
261 * Certificates in both DER and PEM format are accepted
262 *
263 * @param this calling object
264 */
265 void (*load_attr_certificates) (credential_store_t *this);
266
267 /**
268 * @brief Loads ocsp certificates from a default directory.
269 *
270 * Certificates in both DER and PEM format are accepted
271 *
272 * @param this calling object
273 */
274 void (*load_ocsp_certificates) (credential_store_t *this);
275
276 /**
277 * @brief Loads CRLs from a default directory.
278 *
279 * Certificates in both DER and PEM format are accepted
280 *
281 * @param this calling object
282 * @param path directory to load crls from
283 */
284 void (*load_crls) (credential_store_t *this);
285
286 /**
287 * @brief Loads secrets in ipsec.secrets
288 *
289 * Currently, all RSA private key files must be in unencrypted form
290 * either in DER or PEM format.
291 *
292 * @param this calling object
293 */
294 void (*load_secrets) (credential_store_t *this);
295
296 /**
297 * @brief Destroys a credential_store_t object.
298 *
299 * @param this calling object
300 */
301 void (*destroy) (credential_store_t *this);
302 };
303
304 /**
305 * @brief Creates a credential_store_t instance.
306 *
307 * @param strict enforce a strict crl policy
308 * @return credential store instance.
309 *
310 * @ingroup config
311 */
312 credential_store_t *credential_store_create(bool strict);
313
314
315 #endif /*CREDENTIAL_STORE_H_*/