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536dbc00 | 1 | /* |
53ba0801 | 2 | * Copyright (C) 2020 Tobias Brunner |
e5b65657 | 3 | * Copyright (C) 2020-2021 Pascal Knecht |
53ba0801 TB |
4 | * Copyright (C) 2020 Méline Sieber |
5 | * HSR Hochschule fuer Technik Rapperswil | |
6 | * | |
48d6b57c MW |
7 | * Copyright (C) 2010-2014 Martin Willi |
8 | * Copyright (C) 2010-2014 revosec AG | |
536dbc00 MW |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
17 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | * for more details. | |
19 | */ | |
20 | ||
21 | #include "tls_crypto.h" | |
7a2b0266 | 22 | #include "tls_hkdf.h" |
536dbc00 | 23 | |
f05b4272 | 24 | #include <utils/debug.h> |
48d6b57c | 25 | #include <plugins/plugin_feature.h> |
9803fb82 | 26 | #include <collections/hashtable.h> |
d8e42a3d | 27 | #include <collections/array.h> |
18010de2 | 28 | |
4657b3a4 AS |
29 | ENUM_BEGIN(tls_cipher_suite_names, TLS_NULL_WITH_NULL_NULL, |
30 | TLS_DH_anon_WITH_3DES_EDE_CBC_SHA, | |
31 | "TLS_NULL_WITH_NULL_NULL", | |
32 | "TLS_RSA_WITH_NULL_MD5", | |
33 | "TLS_RSA_WITH_NULL_SHA", | |
34 | "TLS_RSA_EXPORT_WITH_RC4_40_MD5", | |
35 | "TLS_RSA_WITH_RC4_128_MD5", | |
36 | "TLS_RSA_WITH_RC4_128_SHA", | |
37 | "TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5", | |
38 | "TLS_RSA_WITH_IDEA_CBC_SHA", | |
39 | "TLS_RSA_EXPORT_WITH_DES40_CBC_SHA", | |
40 | "TLS_RSA_WITH_DES_CBC_SHA", | |
41 | "TLS_RSA_WITH_3DES_EDE_CBC_SHA", | |
42 | "TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA", | |
43 | "TLS_DH_DSS_WITH_DES_CBC_SHA", | |
44 | "TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA", | |
45 | "TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA", | |
46 | "TLS_DH_RSA_WITH_DES_CBC_SHA", | |
47 | "TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA", | |
48 | "TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA", | |
37d2d7e1 | 49 | "TLS_DHE_DSS_WITH_DES_CBC_SHA", |
4657b3a4 AS |
50 | "TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA", |
51 | "TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA", | |
52 | "TLS_DHE_RSA_WITH_DES_CBC_SHA", | |
53 | "TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA", | |
54 | "TLS_DH_anon_EXPORT_WITH_RC4_40_MD5", | |
55 | "TLS_DH_anon_WITH_RC4_128_MD5", | |
56 | "TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA", | |
57 | "TLS_DH_anon_WITH_DES_CBC_SHA", | |
58 | "TLS_DH_anon_WITH_3DES_EDE_CBC_SHA"); | |
59 | ENUM_NEXT(tls_cipher_suite_names, TLS_KRB5_WITH_DES_CBC_SHA, | |
60 | TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA, | |
61 | TLS_DH_anon_WITH_3DES_EDE_CBC_SHA, | |
62 | "TLS_KRB5_WITH_DES_CBC_SHA", | |
63 | "TLS_KRB5_WITH_3DES_EDE_CBC_SHA", | |
64 | "TLS_KRB5_WITH_RC4_128_SHA", | |
65 | "TLS_KRB5_WITH_IDEA_CBC_SHA", | |
66 | "TLS_KRB5_WITH_DES_CBC_MD5", | |
67 | "TLS_KRB5_WITH_3DES_EDE_CBC_MD5", | |
68 | "TLS_KRB5_WITH_RC4_128_MD5", | |
69 | "TLS_KRB5_WITH_IDEA_CBC_MD5", | |
70 | "TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA", | |
37d2d7e1 | 71 | "TLS_KRB5_EXPORT_WITH_RC2_CBC_40_SHA", |
4657b3a4 AS |
72 | "TLS_KRB5_EXPORT_WITH_RC4_40_SHA", |
73 | "TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5", | |
74 | "TLS_KRB5_EXPORT_WITH_RC2_CBC_40_MD5", | |
75 | "TLS_KRB5_EXPORT_WITH_RC4_40_MD5", | |
76 | "TLS_PSK_WITH_NULL_SHA", | |
77 | "TLS_DHE_PSK_WITH_NULL_SHA", | |
78 | "TLS_RSA_PSK_WITH_NULL_SHA", | |
79 | "TLS_RSA_WITH_AES_128_CBC_SHA", | |
80 | "TLS_DH_DSS_WITH_AES_128_CBC_SHA", | |
81 | "TLS_DH_RSA_WITH_AES_128_CBC_SHA", | |
82 | "TLS_DHE_DSS_WITH_AES_128_CBC_SHA", | |
83 | "TLS_DHE_RSA_WITH_AES_128_CBC_SHA", | |
84 | "TLS_DH_anon_WITH_AES_128_CBC_SHA", | |
85 | "TLS_RSA_WITH_AES_256_CBC_SHA", | |
86 | "TLS_DH_DSS_WITH_AES_256_CBC_SHA", | |
87 | "TLS_DH_RSA_WITH_AES_256_CBC_SHA", | |
88 | "TLS_DHE_DSS_WITH_AES_256_CBC_SHA", | |
89 | "TLS_DHE_RSA_WITH_AES_256_CBC_SHA", | |
90 | "TLS_DH_anon_WITH_AES_256_CBC_SHA", | |
91 | "TLS_RSA_WITH_NULL_SHA256", | |
e67e8dd1 | 92 | "TLS_RSA_WITH_AES_128_CBC_SHA256", |
4657b3a4 AS |
93 | "TLS_RSA_WITH_AES_256_CBC_SHA256", |
94 | "TLS_DH_DSS_WITH_AES_128_CBC_SHA256", | |
95 | "TLS_DH_RSA_WITH_AES_128_CBC_SHA256", | |
96 | "TLS_DHE_DSS_WITH_AES_128_CBC_SHA256", | |
97 | "TLS_RSA_WITH_CAMELLIA_128_CBC_SHA", | |
98 | "TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA", | |
99 | "TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA", | |
100 | "TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA", | |
37d2d7e1 | 101 | "TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA", |
4657b3a4 AS |
102 | "TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA"); |
103 | ENUM_NEXT(tls_cipher_suite_names, TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, | |
104 | TLS_DH_anon_WITH_AES_256_CBC_SHA256, | |
105 | TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA, | |
106 | "TLS_DHE_RSA_WITH_AES_128_CBC_SHA256", | |
107 | "TLS_DH_DSS_WITH_AES_256_CBC_SHA256", | |
108 | "TLS_DH_RSA_WITH_AES_256_CBC_SHA256", | |
109 | "TLS_DHE_DSS_WITH_AES_256_CBC_SHA256", | |
110 | "TLS_DHE_RSA_WITH_AES_256_CBC_SHA256", | |
111 | "TLS_DH_anon_WITH_AES_128_CBC_SHA256", | |
112 | "TLS_DH_anon_WITH_AES_256_CBC_SHA256"); | |
113 | ENUM_NEXT(tls_cipher_suite_names, TLS_RSA_WITH_CAMELLIA_256_CBC_SHA, | |
37d2d7e1 | 114 | TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256, |
4657b3a4 AS |
115 | TLS_DH_anon_WITH_AES_256_CBC_SHA256, |
116 | "TLS_RSA_WITH_CAMELLIA_256_CBC_SHA", | |
117 | "TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA", | |
118 | "TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA", | |
119 | "TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA", | |
120 | "TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA", | |
121 | "TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA", | |
122 | "TLS_PSK_WITH_RC4_128_SHA", | |
e67e8dd1 | 123 | "TLS_PSK_WITH_3DES_EDE_CBC_SHA", |
4657b3a4 AS |
124 | "TLS_PSK_WITH_AES_128_CBC_SHA", |
125 | "TLS_PSK_WITH_AES_256_CBC_SHA", | |
126 | "TLS_DHE_PSK_WITH_RC4_128_SHA", | |
127 | "TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA", | |
128 | "TLS_DHE_PSK_WITH_AES_128_CBC_SHA", | |
e67e8dd1 | 129 | "TLS_DHE_PSK_WITH_AES_256_CBC_SHA", |
4657b3a4 AS |
130 | "TLS_RSA_PSK_WITH_RC4_128_SHA", |
131 | "TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA", | |
132 | "TLS_RSA_PSK_WITH_AES_128_CBC_SHA", | |
133 | "TLS_RSA_PSK_WITH_AES_256_CBC_SHA", | |
134 | "TLS_RSA_WITH_SEED_CBC_SHA", | |
135 | "TLS_DH_DSS_WITH_SEED_CBC_SHA", | |
136 | "TLS_DH_RSA_WITH_SEED_CBC_SHA", | |
137 | "TLS_DHE_DSS_WITH_SEED_CBC_SHA", | |
138 | "TLS_DHE_RSA_WITH_SEED_CBC_SHA", | |
139 | "TLS_DH_anon_WITH_SEED_CBC_SHA", | |
140 | "TLS_RSA_WITH_AES_128_GCM_SHA256", | |
141 | "TLS_RSA_WITH_AES_256_GCM_SHA384", | |
142 | "TLS_DHE_RSA_WITH_AES_128_GCM_SHA256", | |
143 | "TLS_DHE_RSA_WITH_AES_256_GCM_SHA384", | |
144 | "TLS_DH_RSA_WITH_AES_128_GCM_SHA256", | |
145 | "TLS_DH_RSA_WITH_AES_256_GCM_SHA384", | |
146 | "TLS_DHE_DSS_WITH_AES_128_GCM_SHA256", | |
147 | "TLS_DHE_DSS_WITH_AES_256_GCM_SHA384", | |
148 | "TLS_DH_DSS_WITH_AES_128_GCM_SHA256", | |
149 | "TLS_DH_DSS_WITH_AES_256_GCM_SHA384", | |
150 | "TLS_DH_anon_WITH_AES_128_GCM_SHA256", | |
151 | "TLS_DH_anon_WITH_AES_256_GCM_SHA384", | |
152 | "TLS_PSK_WITH_AES_128_GCM_SHA256", | |
153 | "TLS_PSK_WITH_AES_256_GCM_SHA384", | |
154 | "TLS_DHE_PSK_WITH_AES_128_GCM_SHA256", | |
155 | "TLS_DHE_PSK_WITH_AES_256_GCM_SHA384", | |
156 | "TLS_RSA_PSK_WITH_AES_128_GCM_SHA256", | |
157 | "TLS_RSA_PSK_WITH_AES_256_GCM_SHA384", | |
158 | "TLS_PSK_WITH_AES_128_CBC_SHA256", | |
159 | "TLS_PSK_WITH_AES_256_CBC_SHA384", | |
160 | "TLS_PSK_WITH_NULL_SHA256", | |
161 | "TLS_PSK_WITH_NULL_SHA384", | |
162 | "TLS_DHE_PSK_WITH_AES_128_CBC_SHA256", | |
163 | "TLS_DHE_PSK_WITH_AES_256_CBC_SHA384", | |
164 | "TLS_DHE_PSK_WITH_NULL_SHA256", | |
165 | "TLS_DHE_PSK_WITH_NULL_SHA384", | |
166 | "TLS_RSA_PSK_WITH_AES_128_CBC_SHA256", | |
167 | "TLS_RSA_PSK_WITH_AES_256_CBC_SHA384", | |
168 | "TLS_RSA_PSK_WITH_NULL_SHA256", | |
169 | "TLS_RSA_PSK_WITH_NULL_SHA384", | |
170 | "TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256", | |
171 | "TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256", | |
172 | "TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256", | |
173 | "TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256", | |
174 | "TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256", | |
175 | "TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256", | |
176 | "TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256", | |
177 | "TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256", | |
178 | "TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256", | |
179 | "TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256", | |
180 | "TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256", | |
181 | "TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256"); | |
182 | ENUM_NEXT(tls_cipher_suite_names, TLS_EMPTY_RENEGOTIATION_INFO_SCSV, | |
37d2d7e1 | 183 | TLS_EMPTY_RENEGOTIATION_INFO_SCSV, |
4657b3a4 AS |
184 | TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256, |
185 | "TLS_EMPTY_RENEGOTIATION_INFO_SCSV"); | |
7a2b0266 | 186 | ENUM_NEXT(tls_cipher_suite_names, TLS_AES_128_GCM_SHA256, |
187 | TLS_AES_128_CCM_8_SHA256, | |
188 | TLS_EMPTY_RENEGOTIATION_INFO_SCSV, | |
189 | "TLS_AES_128_GCM_SHA256", | |
190 | "TLS_AES_256_GCM_SHA384", | |
191 | "TLS_CHACHA20_POLY1305_SHA256", | |
192 | "TLS_AES_128_CCM_SHA256", | |
193 | "TLS_AES_128_CCM_8_SHA256"); | |
4657b3a4 | 194 | ENUM_NEXT(tls_cipher_suite_names, TLS_ECDH_ECDSA_WITH_NULL_SHA, |
37d2d7e1 | 195 | TLS_ECDHE_PSK_WITH_NULL_SHA384, |
7a2b0266 | 196 | TLS_AES_128_CCM_8_SHA256, |
4657b3a4 AS |
197 | "TLS_ECDH_ECDSA_WITH_NULL_SHA", |
198 | "TLS_ECDH_ECDSA_WITH_RC4_128_SHA", | |
199 | "TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA", | |
200 | "TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA", | |
201 | "TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA", | |
202 | "TLS_ECDHE_ECDSA_WITH_NULL_SHA", | |
203 | "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA", | |
204 | "TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA", | |
205 | "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA", | |
206 | "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA", | |
207 | "TLS_ECDH_RSA_WITH_NULL_SHA", | |
208 | "TLS_ECDH_RSA_WITH_RC4_128_SHA", | |
209 | "TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA", | |
210 | "TLS_ECDH_RSA_WITH_AES_128_CBC_SHA", | |
211 | "TLS_ECDH_RSA_WITH_AES_256_CBC_SHA", | |
212 | "TLS_ECDHE_RSA_WITH_NULL_SHA", | |
213 | "TLS_ECDHE_RSA_WITH_RC4_128_SHA", | |
214 | "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA", | |
215 | "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA", | |
216 | "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA", | |
217 | "TLS_ECDH_anon_WITH_NULL_SHA", | |
218 | "TLS_ECDH_anon_WITH_RC4_128_SHA", | |
219 | "TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA", | |
220 | "TLS_ECDH_anon_WITH_AES_128_CBC_SHA", | |
221 | "TLS_ECDH_anon_WITH_AES_256_CBC_SHA", | |
222 | "TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA", | |
223 | "TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA", | |
224 | "TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA", | |
225 | "TLS_SRP_SHA_WITH_AES_128_CBC_SHA", | |
226 | "TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA", | |
227 | "TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA", | |
228 | "TLS_SRP_SHA_WITH_AES_256_CBC_SHA", | |
229 | "TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA", | |
230 | "TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA", | |
231 | "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256", | |
232 | "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384", | |
233 | "TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256", | |
234 | "TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384", | |
235 | "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256", | |
236 | "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384", | |
237 | "TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256", | |
238 | "TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384", | |
239 | "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", | |
240 | "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", | |
241 | "TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256", | |
242 | "TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384", | |
243 | "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256", | |
244 | "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384", | |
245 | "TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256", | |
246 | "TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384", | |
247 | "TLS_ECDHE_PSK_WITH_RC4_128_SHA", | |
248 | "TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA", | |
249 | "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA", | |
250 | "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA", | |
251 | "TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256", | |
252 | "TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384", | |
253 | "TLS_ECDHE_PSK_WITH_NULL_SHA", | |
254 | "TLS_ECDHE_PSK_WITH_NULL_SHA256", | |
255 | "TLS_ECDHE_PSK_WITH_NULL_SHA384"); | |
f81c04e9 PK |
256 | ENUM_NEXT(tls_cipher_suite_names, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, |
257 | TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256, | |
258 | TLS_ECDHE_PSK_WITH_NULL_SHA384, | |
259 | "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256", | |
260 | "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256", | |
261 | "TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256"); | |
262 | ENUM_END(tls_cipher_suite_names, TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256); | |
263 | ||
4657b3a4 | 264 | |
9dd2ca92 MW |
265 | ENUM(tls_hash_algorithm_names, TLS_HASH_NONE, TLS_HASH_SHA512, |
266 | "NONE", | |
267 | "MD5", | |
268 | "SHA1", | |
269 | "SHA224", | |
270 | "SHA256", | |
271 | "SHA384", | |
272 | "SHA512", | |
273 | ); | |
274 | ||
1b593e1d TB |
275 | ENUM_BEGIN(tls_signature_scheme_names, |
276 | TLS_SIG_RSA_PKCS1_SHA1, TLS_SIG_RSA_PKCS1_SHA1, | |
277 | "RSA_PKCS1_SHA1"); | |
278 | ENUM_NEXT(tls_signature_scheme_names, | |
279 | TLS_SIG_ECDSA_SHA1, TLS_SIG_ECDSA_SHA1, TLS_SIG_RSA_PKCS1_SHA1, | |
280 | "ECDSA_SHA1"); | |
281 | ENUM_NEXT(tls_signature_scheme_names, | |
91c9e4d5 PK |
282 | TLS_SIG_RSA_PKCS1_SHA224, TLS_SIG_ECDSA_SHA224, TLS_SIG_ECDSA_SHA1, |
283 | "RSA_PKCS1_SHA224", | |
284 | "DSA_SHA224", | |
285 | "ECDSA_SHA224"); | |
1b593e1d | 286 | ENUM_NEXT(tls_signature_scheme_names, |
91c9e4d5 PK |
287 | TLS_SIG_RSA_PKCS1_SHA256, TLS_SIG_ECDSA_SHA256, TLS_SIG_ECDSA_SHA224, |
288 | "RSA_PKCS1_SHA256", | |
289 | "DSA_SHA256", | |
1b593e1d TB |
290 | "ECDSA_SHA256"); |
291 | ENUM_NEXT(tls_signature_scheme_names, | |
91c9e4d5 PK |
292 | TLS_SIG_RSA_PKCS1_SHA384, TLS_SIG_ECDSA_SHA384, TLS_SIG_ECDSA_SHA256, |
293 | "RSA_PKCS1_SHA384", | |
294 | "DSA_SHA384", | |
1b593e1d TB |
295 | "ECDSA_SHA384"); |
296 | ENUM_NEXT(tls_signature_scheme_names, | |
91c9e4d5 PK |
297 | TLS_SIG_RSA_PKCS1_SHA512, TLS_SIG_ECDSA_SHA512, TLS_SIG_ECDSA_SHA384, |
298 | "RSA_PKCS1_SHA512", | |
299 | "DSA_SHA512", | |
1b593e1d TB |
300 | "ECDSA_SHA512"); |
301 | ENUM_NEXT(tls_signature_scheme_names, | |
302 | TLS_SIG_RSA_PSS_RSAE_SHA256, TLS_SIG_RSA_PSS_PSS_SHA512, TLS_SIG_ECDSA_SHA512, | |
303 | "RSA_PSS_RSAE_SHA256", | |
304 | "RSA_PSS_RSAE_SHA384", | |
305 | "RSA_PSS_RSAE_SHA512", | |
306 | "ED25519", | |
307 | "ED448", | |
308 | "RSA_PSS_PSS_SHA256", | |
309 | "RSA_PSS_PSS_SHA384", | |
310 | "RSA_PSS_PSS_SHA512", | |
9dd2ca92 | 311 | ); |
1b593e1d | 312 | ENUM_END(tls_signature_scheme_names, TLS_SIG_RSA_PSS_PSS_SHA512); |
9dd2ca92 | 313 | |
99dcaea9 MW |
314 | ENUM_BEGIN(tls_client_certificate_type_names, |
315 | TLS_RSA_SIGN, TLS_DSS_EPHEMERAL_DH, | |
316 | "RSA_SIGN", | |
317 | "DSA_SIGN", | |
318 | "RSA_FIXED_DH", | |
319 | "DSS_FIXED_DH", | |
320 | "RSA_EPHEMERAL_DH", | |
321 | "DSS_EPHEMERAL_DH"); | |
322 | ENUM_NEXT(tls_client_certificate_type_names, | |
323 | TLS_FORTEZZA_DMS, TLS_FORTEZZA_DMS, TLS_DSS_EPHEMERAL_DH, | |
324 | "FORTEZZA_DMS"); | |
325 | ENUM_NEXT(tls_client_certificate_type_names, | |
326 | TLS_ECDSA_SIGN, TLS_ECDSA_FIXED_ECDH, TLS_FORTEZZA_DMS, | |
327 | "ECDSA_SIGN", | |
328 | "RSA_FIXED_ECDH", | |
329 | "ECDSA_FIXED_ECDH"); | |
330 | ENUM_END(tls_client_certificate_type_names, TLS_ECDSA_FIXED_ECDH); | |
331 | ||
691ca54d MW |
332 | ENUM(tls_ecc_curve_type_names, TLS_ECC_EXPLICIT_PRIME, TLS_ECC_NAMED_CURVE, |
333 | "EXPLICIT_PRIME", | |
334 | "EXPLICIT_CHAR2", | |
335 | "NAMED_CURVE", | |
336 | ); | |
337 | ||
7a2b0266 | 338 | ENUM_BEGIN(tls_named_group_names, TLS_SECT163K1, TLS_SECP521R1, |
691ca54d MW |
339 | "SECT163K1", |
340 | "SECT163R1", | |
341 | "SECT163R2", | |
342 | "SECT193R1", | |
343 | "SECT193R2", | |
344 | "SECT233K1", | |
345 | "SECT233R1", | |
346 | "SECT239K1", | |
347 | "SECT283K1", | |
348 | "SECT283R1", | |
349 | "SECT409K1", | |
350 | "SECT409R1", | |
351 | "SECT571K1", | |
352 | "SECT571R1", | |
353 | "SECP160K1", | |
354 | "SECP160R1", | |
355 | "SECP160R2", | |
356 | "SECP192K1", | |
357 | "SECP192R1", | |
358 | "SECP224K1", | |
359 | "SECP224R1", | |
360 | "SECP256K1", | |
361 | "SECP256R1", | |
362 | "SECP384R1", | |
363 | "SECP521R1", | |
364 | ); | |
3101120c | 365 | ENUM_NEXT(tls_named_group_names, TLS_CURVE25519, TLS_CURVE448, TLS_SECP521R1, |
7a2b0266 | 366 | "CURVE25519", |
367 | "CURVE448", | |
368 | ); | |
3101120c | 369 | ENUM_NEXT(tls_named_group_names, TLS_FFDHE2048, TLS_FFDHE8192, TLS_CURVE448, |
7a2b0266 | 370 | "FFDHE2048", |
371 | "FFDHE3072", | |
372 | "FFDHE4096", | |
373 | "FFDHE6144", | |
374 | "FFDHE8192", | |
375 | ); | |
376 | ENUM_END(tls_named_group_names, TLS_FFDHE8192); | |
691ca54d | 377 | |
ec7d4e70 | 378 | ENUM(tls_ansi_point_format_names, TLS_ANSI_COMPRESSED, TLS_ANSI_HYBRID_Y, |
e6cce7ff MW |
379 | "compressed", |
380 | "compressed y", | |
381 | "uncompressed", | |
382 | "uncompressed y", | |
383 | "hybrid", | |
384 | "hybrid y", | |
385 | ); | |
99dcaea9 | 386 | |
02281c87 MW |
387 | ENUM(tls_ec_point_format_names, |
388 | TLS_EC_POINT_UNCOMPRESSED, TLS_EC_POINT_ANSIX962_COMPRESSED_CHAR2, | |
389 | "uncompressed", | |
390 | "ansiX962 compressed prime", | |
391 | "ansiX962 compressed char2", | |
392 | ); | |
393 | ||
536dbc00 MW |
394 | typedef struct private_tls_crypto_t private_tls_crypto_t; |
395 | ||
396 | /** | |
397 | * Private data of an tls_crypto_t object. | |
398 | */ | |
399 | struct private_tls_crypto_t { | |
400 | ||
401 | /** | |
402 | * Public tls_crypto_t interface. | |
403 | */ | |
404 | tls_crypto_t public; | |
18010de2 | 405 | |
dc9f34be MW |
406 | /** |
407 | * Protection layer | |
408 | */ | |
409 | tls_protection_t *protection; | |
410 | ||
18010de2 MW |
411 | /** |
412 | * List of supported/acceptable cipher suites | |
413 | */ | |
414 | tls_cipher_suite_t *suites; | |
415 | ||
416 | /** | |
417 | * Number of supported suites | |
418 | */ | |
419 | int suite_count; | |
420 | ||
7a2b0266 | 421 | /** |
422 | * HKDF for TLS 1.3 | |
423 | */ | |
424 | tls_hkdf_t *hkdf; | |
425 | ||
18010de2 MW |
426 | /** |
427 | * Selected cipher suite | |
428 | */ | |
429 | tls_cipher_suite_t suite; | |
430 | ||
4254257f MW |
431 | /** |
432 | * RSA supported? | |
433 | */ | |
434 | bool rsa; | |
435 | ||
436 | /** | |
437 | * ECDSA supported? | |
438 | */ | |
439 | bool ecdsa; | |
440 | ||
18010de2 MW |
441 | /** |
442 | * TLS context | |
443 | */ | |
444 | tls_t *tls; | |
445 | ||
6a5c86b7 MW |
446 | /** |
447 | * TLS session cache | |
448 | */ | |
449 | tls_cache_t *cache; | |
450 | ||
84d67ead | 451 | /** |
2db6d5b8 | 452 | * All handshake data concatenated |
84d67ead MW |
453 | */ |
454 | chunk_t handshake; | |
455 | ||
18010de2 MW |
456 | /** |
457 | * Connection state TLS PRF | |
458 | */ | |
459 | tls_prf_t *prf; | |
84543e6e MW |
460 | |
461 | /** | |
d3204677 | 462 | * AEAD transform for inbound traffic |
84543e6e | 463 | */ |
d3204677 | 464 | tls_aead_t *aead_in; |
84543e6e MW |
465 | |
466 | /** | |
d3204677 | 467 | * AEAD transform for outbound traffic |
84543e6e | 468 | */ |
d3204677 | 469 | tls_aead_t *aead_out; |
51313a39 MW |
470 | |
471 | /** | |
a6444fcd | 472 | * EAP-[T]TLS MSK |
51313a39 MW |
473 | */ |
474 | chunk_t msk; | |
a6444fcd AS |
475 | |
476 | /** | |
477 | * ASCII string constant used as seed for EAP-[T]TLS MSK PRF | |
478 | */ | |
479 | char *msk_label; | |
536dbc00 MW |
480 | }; |
481 | ||
84543e6e MW |
482 | typedef struct { |
483 | tls_cipher_suite_t suite; | |
4cdade5a MW |
484 | key_type_t key; |
485 | diffie_hellman_group_t dh; | |
84543e6e MW |
486 | hash_algorithm_t hash; |
487 | pseudo_random_function_t prf; | |
488 | integrity_algorithm_t mac; | |
489 | encryption_algorithm_t encr; | |
490 | size_t encr_size; | |
281766c5 TB |
491 | tls_version_t min_version; |
492 | tls_version_t max_version; | |
84543e6e MW |
493 | } suite_algs_t; |
494 | ||
495 | /** | |
496 | * Mapping suites to a set of algorithms | |
d107198f PK |
497 | * |
498 | * The order represents the descending preference of cipher suites and follows | |
499 | * this rule set: | |
500 | * | |
501 | * 1. TLS 1.3 > Legacy TLS | |
502 | * 2. AES > CAMELLIA > NULL | |
503 | * 3. AES256 > AES128 | |
504 | * 4. GCM > CBC | |
505 | * 5. ECDHE > DHE > NULL | |
506 | * 6. ECDSA > RSA | |
507 | * 7. SHA384 > SHA256 > SHA1 | |
508 | * | |
84543e6e MW |
509 | */ |
510 | static suite_algs_t suite_algs[] = { | |
7a2b0266 | 511 | /* Cipher suites of TLS 1.3: key exchange and authentication |
512 | * delegated to extensions, therefore KEY_ANY, MODP_NONE, PRF_UNDEFINED */ | |
7a2b0266 | 513 | { TLS_AES_256_GCM_SHA384, |
514 | KEY_ANY, MODP_NONE, | |
515 | HASH_SHA384, PRF_UNDEFINED, | |
516 | AUTH_HMAC_SHA2_384_384, ENCR_AES_GCM_ICV16, 32, | |
281766c5 | 517 | TLS_1_3, TLS_1_3, |
7a2b0266 | 518 | }, |
d107198f PK |
519 | { TLS_AES_128_GCM_SHA256, |
520 | KEY_ANY, MODP_NONE, | |
521 | HASH_SHA256, PRF_UNDEFINED, | |
522 | AUTH_HMAC_SHA2_256_256, ENCR_AES_GCM_ICV16, 16, | |
523 | TLS_1_3, TLS_1_3, | |
524 | }, | |
7a2b0266 | 525 | { TLS_CHACHA20_POLY1305_SHA256, |
526 | KEY_ANY, MODP_NONE, | |
527 | HASH_SHA256, PRF_UNDEFINED, | |
b7ea969b | 528 | AUTH_HMAC_SHA2_256_256, ENCR_CHACHA20_POLY1305, 32, |
281766c5 | 529 | TLS_1_3, TLS_1_3, |
7a2b0266 | 530 | }, |
531 | { TLS_AES_128_CCM_SHA256, | |
281766c5 TB |
532 | KEY_ANY, MODP_NONE, |
533 | HASH_SHA256, PRF_UNDEFINED, | |
534 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CCM_ICV16, 16, | |
535 | TLS_1_3, TLS_1_3, | |
7a2b0266 | 536 | }, |
537 | { TLS_AES_128_CCM_8_SHA256, | |
281766c5 TB |
538 | KEY_ANY, MODP_NONE, |
539 | HASH_SHA256, PRF_UNDEFINED, | |
540 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CCM_ICV8, 16, | |
541 | TLS_1_3, TLS_1_3, | |
7a2b0266 | 542 | }, |
543 | /* Legacy TLS cipher suites */ | |
d107198f PK |
544 | { TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, |
545 | KEY_ECDSA, ECP_384_BIT, | |
546 | HASH_SHA384, PRF_HMAC_SHA2_384, | |
547 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32, | |
548 | TLS_1_2, TLS_1_2, | |
2066918d | 549 | }, |
d107198f PK |
550 | { TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, |
551 | KEY_ECDSA, ECP_384_BIT, | |
552 | HASH_SHA384, PRF_HMAC_SHA2_384, | |
553 | AUTH_HMAC_SHA2_384_384, ENCR_AES_CBC, 32, | |
281766c5 | 554 | TLS_1_2, TLS_1_2, |
2066918d MW |
555 | }, |
556 | { TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, | |
557 | KEY_ECDSA, ECP_384_BIT, | |
ed57dfca | 558 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 559 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32, |
281766c5 | 560 | TLS_1_0, TLS_1_2, |
2066918d | 561 | }, |
d06890d6 MW |
562 | { TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, |
563 | KEY_ECDSA, ECP_256_BIT, | |
564 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 565 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16, |
281766c5 | 566 | TLS_1_2, TLS_1_2, |
d06890d6 | 567 | }, |
d107198f PK |
568 | { TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, |
569 | KEY_ECDSA, ECP_256_BIT, | |
570 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
571 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16, | |
281766c5 | 572 | TLS_1_2, TLS_1_2, |
d06890d6 | 573 | }, |
d107198f PK |
574 | { TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, |
575 | KEY_ECDSA, ECP_256_BIT, | |
ed57dfca | 576 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 577 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16, |
281766c5 | 578 | TLS_1_0, TLS_1_2, |
2066918d | 579 | }, |
d107198f | 580 | { TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, |
f9c0cf86 | 581 | KEY_RSA, ECP_384_BIT, |
d107198f PK |
582 | HASH_SHA384, PRF_HMAC_SHA2_384, |
583 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32, | |
584 | TLS_1_2, TLS_1_2, | |
2066918d MW |
585 | }, |
586 | { TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, | |
f9c0cf86 | 587 | KEY_RSA, ECP_384_BIT, |
2066918d | 588 | HASH_SHA384, PRF_HMAC_SHA2_384, |
7a2b0266 | 589 | AUTH_HMAC_SHA2_384_384, ENCR_AES_CBC, 32, |
281766c5 | 590 | TLS_1_2, TLS_1_2, |
2066918d | 591 | }, |
d107198f PK |
592 | { TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, |
593 | KEY_RSA, ECP_384_BIT, | |
594 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
595 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32, | |
596 | TLS_1_0, TLS_1_2, | |
597 | }, | |
d06890d6 MW |
598 | { TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, |
599 | KEY_RSA, ECP_256_BIT, | |
600 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 601 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16, |
281766c5 | 602 | TLS_1_2, TLS_1_2, |
d06890d6 | 603 | }, |
d107198f PK |
604 | { TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, |
605 | KEY_RSA, ECP_256_BIT, | |
606 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
607 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16, | |
281766c5 | 608 | TLS_1_2, TLS_1_2, |
d06890d6 | 609 | }, |
d107198f PK |
610 | { TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, |
611 | KEY_RSA, ECP_256_BIT, | |
612 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 613 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16, |
d107198f | 614 | TLS_1_0, TLS_1_2, |
ef0a8e58 | 615 | }, |
d107198f PK |
616 | { TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, |
617 | KEY_RSA, MODP_4096_BIT, | |
618 | HASH_SHA384, PRF_HMAC_SHA2_384, | |
619 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32, | |
620 | TLS_1_2, TLS_1_2, | |
621 | }, | |
622 | { TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, | |
623 | KEY_RSA, MODP_4096_BIT, | |
4cdade5a | 624 | HASH_SHA256, PRF_HMAC_SHA2_256, |
d107198f | 625 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 32, |
281766c5 | 626 | TLS_1_2, TLS_1_2, |
ef0a8e58 MW |
627 | }, |
628 | { TLS_DHE_RSA_WITH_AES_256_CBC_SHA, | |
4cdade5a | 629 | KEY_RSA, MODP_3072_BIT, |
ed57dfca | 630 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 631 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32, |
281766c5 | 632 | SSL_3_0, TLS_1_2, |
ef0a8e58 | 633 | }, |
d107198f | 634 | { TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256, |
4cdade5a MW |
635 | KEY_RSA, MODP_4096_BIT, |
636 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
d107198f | 637 | AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 32, |
281766c5 | 638 | TLS_1_2, TLS_1_2, |
ef0a8e58 | 639 | }, |
d107198f PK |
640 | { TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA, |
641 | KEY_RSA, MODP_3072_BIT, | |
642 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
643 | AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 32, | |
644 | SSL_3_0, TLS_1_2, | |
645 | }, | |
d06890d6 MW |
646 | { TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, |
647 | KEY_RSA, MODP_3072_BIT, | |
648 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 649 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16, |
281766c5 | 650 | TLS_1_2, TLS_1_2, |
d06890d6 | 651 | }, |
d107198f PK |
652 | { TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, |
653 | KEY_RSA, MODP_3072_BIT, | |
654 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
655 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16, | |
281766c5 | 656 | TLS_1_2, TLS_1_2, |
d06890d6 | 657 | }, |
d107198f | 658 | { TLS_DHE_RSA_WITH_AES_128_CBC_SHA, |
4cdade5a | 659 | KEY_RSA, MODP_2048_BIT, |
d107198f PK |
660 | HASH_SHA256,PRF_HMAC_SHA2_256, |
661 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16, | |
281766c5 | 662 | SSL_3_0, TLS_1_2, |
ef0a8e58 MW |
663 | }, |
664 | { TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256, | |
4cdade5a MW |
665 | KEY_RSA, MODP_3072_BIT, |
666 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 667 | AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 16, |
281766c5 | 668 | TLS_1_2, TLS_1_2, |
ef0a8e58 | 669 | }, |
d107198f | 670 | { TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA, |
4cdade5a | 671 | KEY_RSA, MODP_2048_BIT, |
ed57dfca | 672 | HASH_SHA256, PRF_HMAC_SHA2_256, |
d107198f | 673 | AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 16, |
281766c5 | 674 | SSL_3_0, TLS_1_2, |
ef0a8e58 | 675 | }, |
d107198f | 676 | { TLS_RSA_WITH_AES_256_GCM_SHA384, |
4cdade5a | 677 | KEY_RSA, MODP_NONE, |
d107198f PK |
678 | HASH_SHA384, PRF_HMAC_SHA2_384, |
679 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 32, | |
680 | TLS_1_2, TLS_1_2, | |
6e413d9c | 681 | }, |
d107198f | 682 | { TLS_RSA_WITH_AES_256_CBC_SHA256, |
4cdade5a MW |
683 | KEY_RSA, MODP_NONE, |
684 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
d107198f | 685 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 32, |
281766c5 | 686 | TLS_1_2, TLS_1_2, |
84543e6e MW |
687 | }, |
688 | { TLS_RSA_WITH_AES_256_CBC_SHA, | |
4cdade5a | 689 | KEY_RSA, MODP_NONE, |
ed57dfca | 690 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 691 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 32, |
281766c5 | 692 | SSL_3_0, TLS_1_2, |
84543e6e | 693 | }, |
d06890d6 MW |
694 | { TLS_RSA_WITH_AES_128_GCM_SHA256, |
695 | KEY_RSA, MODP_NONE, | |
696 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 697 | AUTH_UNDEFINED, ENCR_AES_GCM_ICV16, 16, |
281766c5 | 698 | TLS_1_2, TLS_1_2, |
d06890d6 | 699 | }, |
d107198f | 700 | { TLS_RSA_WITH_AES_128_CBC_SHA256, |
d06890d6 | 701 | KEY_RSA, MODP_NONE, |
d107198f PK |
702 | HASH_SHA256, PRF_HMAC_SHA2_256, |
703 | AUTH_HMAC_SHA2_256_256, ENCR_AES_CBC, 16, | |
281766c5 | 704 | TLS_1_2, TLS_1_2, |
d06890d6 | 705 | }, |
d107198f | 706 | { TLS_RSA_WITH_AES_128_CBC_SHA, |
4cdade5a | 707 | KEY_RSA, MODP_NONE, |
ed57dfca | 708 | HASH_SHA256, PRF_HMAC_SHA2_256, |
d107198f | 709 | AUTH_HMAC_SHA1_160, ENCR_AES_CBC, 16, |
281766c5 | 710 | SSL_3_0, TLS_1_2, |
6e413d9c | 711 | }, |
d107198f | 712 | { TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256, |
4cdade5a MW |
713 | KEY_RSA, MODP_NONE, |
714 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
d107198f | 715 | AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 32, |
281766c5 | 716 | TLS_1_2, TLS_1_2, |
6e413d9c MW |
717 | }, |
718 | { TLS_RSA_WITH_CAMELLIA_256_CBC_SHA, | |
4cdade5a | 719 | KEY_RSA, MODP_NONE, |
ed57dfca | 720 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 721 | AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 32, |
281766c5 | 722 | SSL_3_0, TLS_1_2, |
6e413d9c | 723 | }, |
d107198f | 724 | { TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256, |
4cdade5a MW |
725 | KEY_RSA, MODP_NONE, |
726 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
d107198f | 727 | AUTH_HMAC_SHA2_256_256, ENCR_CAMELLIA_CBC, 16, |
281766c5 | 728 | TLS_1_2, TLS_1_2, |
84543e6e | 729 | }, |
d107198f | 730 | { TLS_RSA_WITH_CAMELLIA_128_CBC_SHA, |
4cdade5a | 731 | KEY_RSA, MODP_NONE, |
ed57dfca | 732 | HASH_SHA256, PRF_HMAC_SHA2_256, |
d107198f | 733 | AUTH_HMAC_SHA1_160, ENCR_CAMELLIA_CBC, 16, |
281766c5 | 734 | SSL_3_0, TLS_1_2, |
2bf0e74c | 735 | }, |
2066918d MW |
736 | { TLS_ECDHE_ECDSA_WITH_NULL_SHA, |
737 | KEY_ECDSA, ECP_256_BIT, | |
ed57dfca | 738 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 739 | AUTH_HMAC_SHA1_160, ENCR_NULL, 0, |
281766c5 | 740 | TLS_1_0, TLS_1_2, |
2066918d MW |
741 | }, |
742 | { TLS_ECDHE_RSA_WITH_NULL_SHA, | |
743 | KEY_ECDSA, ECP_256_BIT, | |
ed57dfca | 744 | HASH_SHA256, PRF_HMAC_SHA2_256, |
7a2b0266 | 745 | AUTH_HMAC_SHA1_160, ENCR_NULL, 0, |
281766c5 | 746 | TLS_1_0, TLS_1_2, |
2066918d | 747 | }, |
2bf0e74c | 748 | { TLS_RSA_WITH_NULL_SHA256, |
4cdade5a MW |
749 | KEY_RSA, MODP_NONE, |
750 | HASH_SHA256, PRF_HMAC_SHA2_256, | |
7a2b0266 | 751 | AUTH_HMAC_SHA2_256_256, ENCR_NULL, 0, |
281766c5 | 752 | TLS_1_2, TLS_1_2, |
2bf0e74c | 753 | }, |
d107198f | 754 | { TLS_RSA_WITH_NULL_SHA, |
4cdade5a | 755 | KEY_RSA, MODP_NONE, |
ed57dfca | 756 | HASH_SHA256, PRF_HMAC_SHA2_256, |
d107198f PK |
757 | AUTH_HMAC_SHA1_160, ENCR_NULL, 0, |
758 | SSL_3_0, TLS_1_2, | |
2bf0e74c | 759 | }, |
84543e6e MW |
760 | }; |
761 | ||
762 | /** | |
f3bb1bd0 | 763 | * Look up algorithms by a suite |
84543e6e MW |
764 | */ |
765 | static suite_algs_t *find_suite(tls_cipher_suite_t suite) | |
766 | { | |
767 | int i; | |
768 | ||
769 | for (i = 0; i < countof(suite_algs); i++) | |
770 | { | |
771 | if (suite_algs[i].suite == suite) | |
772 | { | |
773 | return &suite_algs[i]; | |
774 | } | |
775 | } | |
776 | return NULL; | |
777 | } | |
778 | ||
18010de2 | 779 | /** |
a2bfc45b | 780 | * Filter a suite list using a transform enumerator |
18010de2 | 781 | */ |
ac5717c9 | 782 | static void filter_suite(suite_algs_t suites[], int *count, int offset, |
a2bfc45b | 783 | enumerator_t*(*create_enumerator)(crypto_factory_t*)) |
536dbc00 | 784 | { |
5932f41f | 785 | const char *plugin_name; |
a2bfc45b | 786 | suite_algs_t current; |
f10e7234 | 787 | int *current_alg, i, remaining = 0; |
a2bfc45b | 788 | enumerator_t *enumerator; |
536dbc00 | 789 | |
a2bfc45b | 790 | memset(¤t, 0, sizeof(current)); |
f10e7234 AS |
791 | current_alg = (int*)((char*)¤t + offset); |
792 | ||
a2bfc45b | 793 | for (i = 0; i < *count; i++) |
536dbc00 | 794 | { |
b886dad4 MW |
795 | if (create_enumerator == lib->crypto->create_crypter_enumerator && |
796 | encryption_algorithm_is_aead(suites[i].encr)) | |
797 | { /* filtering crypters, but current suite uses an AEAD, apply */ | |
798 | suites[remaining] = suites[i]; | |
799 | remaining++; | |
800 | continue; | |
801 | } | |
802 | if (create_enumerator == lib->crypto->create_aead_enumerator && | |
803 | !encryption_algorithm_is_aead(suites[i].encr)) | |
804 | { /* filtering AEADs, but current suite doesn't use one, apply */ | |
805 | suites[remaining] = suites[i]; | |
806 | remaining++; | |
807 | continue; | |
808 | } | |
a2bfc45b | 809 | enumerator = create_enumerator(lib->crypto); |
f10e7234 | 810 | while (enumerator->enumerate(enumerator, current_alg, &plugin_name)) |
536dbc00 | 811 | { |
b886dad4 | 812 | if (current.encr && current.encr != suites[i].encr) |
536dbc00 | 813 | { |
b886dad4 MW |
814 | if (suites[i].encr != ENCR_NULL) |
815 | { /* skip, ENCR does not match nor is NULL */ | |
816 | continue; | |
817 | } | |
536dbc00 | 818 | } |
b886dad4 MW |
819 | if (current.mac && current.mac != suites[i].mac) |
820 | { | |
821 | if (suites[i].mac != AUTH_UNDEFINED) | |
822 | { /* skip, MAC does not match nor is it undefined */ | |
823 | continue; | |
824 | } | |
825 | } | |
826 | if (current.prf && current.prf != suites[i].prf) | |
436571b2 TB |
827 | { |
828 | if (suites[i].prf != PRF_UNDEFINED) | |
829 | { | |
830 | /* skip, PRF does not match nor is it undefined */ | |
831 | continue; | |
832 | } | |
b886dad4 MW |
833 | } |
834 | if (current.hash && current.hash != suites[i].hash) | |
835 | { /* skip, hash does not match */ | |
836 | continue; | |
837 | } | |
838 | if (current.dh && current.dh != suites[i].dh) | |
839 | { | |
311405c3 TB |
840 | if (suites[i].dh != MODP_NONE && |
841 | !(diffie_hellman_group_is_ec(current.dh) && | |
842 | diffie_hellman_group_is_ec(suites[i].dh))) | |
843 | { /* skip DH group, does not match nor NONE nor both ECDH */ | |
b886dad4 MW |
844 | continue; |
845 | } | |
846 | } | |
847 | /* suite supported, apply */ | |
848 | suites[remaining] = suites[i]; | |
849 | remaining++; | |
850 | break; | |
536dbc00 | 851 | } |
a2bfc45b | 852 | enumerator->destroy(enumerator); |
536dbc00 | 853 | } |
a2bfc45b MW |
854 | *count = remaining; |
855 | } | |
856 | ||
96b2fbcc MW |
857 | /** |
858 | * Purge NULL encryption cipher suites from list | |
859 | */ | |
ac5717c9 | 860 | static void filter_null_suites(suite_algs_t suites[], int *count) |
96b2fbcc MW |
861 | { |
862 | int i, remaining = 0; | |
863 | ||
864 | for (i = 0; i < *count; i++) | |
865 | { | |
866 | if (suites[i].encr != ENCR_NULL) | |
867 | { | |
868 | suites[remaining] = suites[i]; | |
869 | remaining++; | |
870 | } | |
871 | } | |
872 | *count = remaining; | |
873 | } | |
874 | ||
4254257f MW |
875 | /** |
876 | * Purge suites using a given key type | |
877 | */ | |
878 | static void filter_key_suites(private_tls_crypto_t *this, | |
879 | suite_algs_t suites[], int *count, key_type_t key) | |
880 | { | |
881 | int i, remaining = 0; | |
882 | ||
883 | DBG2(DBG_TLS, "disabling %N suites, no backend found", key_type_names, key); | |
884 | for (i = 0; i < *count; i++) | |
885 | { | |
886 | if (suites[i].key != key) | |
887 | { | |
888 | suites[remaining] = suites[i]; | |
889 | remaining++; | |
890 | } | |
891 | } | |
892 | *count = remaining; | |
893 | } | |
894 | ||
24a5b935 MW |
895 | /** |
896 | * Filter suites by key exchange user config | |
897 | */ | |
898 | static void filter_key_exchange_config_suites(private_tls_crypto_t *this, | |
899 | suite_algs_t suites[], int *count) | |
900 | { | |
901 | enumerator_t *enumerator; | |
902 | int i, remaining = 0; | |
903 | char *token, *config; | |
904 | ||
409adef4 TB |
905 | config = lib->settings->get_str(lib->settings, "%s.tls.key_exchange", NULL, |
906 | lib->ns); | |
24a5b935 MW |
907 | if (config) |
908 | { | |
909 | for (i = 0; i < *count; i++) | |
910 | { | |
911 | enumerator = enumerator_create_token(config, ",", " "); | |
912 | while (enumerator->enumerate(enumerator, &token)) | |
913 | { | |
914 | if (strcaseeq(token, "ecdhe-ecdsa") && | |
915 | diffie_hellman_group_is_ec(suites[i].dh) && | |
916 | suites[i].key == KEY_ECDSA) | |
917 | { | |
918 | suites[remaining++] = suites[i]; | |
919 | break; | |
920 | } | |
921 | if (strcaseeq(token, "ecdhe-rsa") && | |
922 | diffie_hellman_group_is_ec(suites[i].dh) && | |
923 | suites[i].key == KEY_RSA) | |
924 | { | |
925 | suites[remaining++] = suites[i]; | |
926 | break; | |
927 | } | |
928 | if (strcaseeq(token, "dhe-rsa") && | |
929 | !diffie_hellman_group_is_ec(suites[i].dh) && | |
930 | suites[i].dh != MODP_NONE && | |
931 | suites[i].key == KEY_RSA) | |
932 | { | |
933 | suites[remaining++] = suites[i]; | |
934 | break; | |
935 | } | |
936 | if (strcaseeq(token, "rsa") && | |
937 | suites[i].dh == MODP_NONE && | |
938 | suites[i].key == KEY_RSA) | |
939 | { | |
940 | suites[remaining++] = suites[i]; | |
941 | break; | |
942 | } | |
943 | } | |
944 | enumerator->destroy(enumerator); | |
945 | } | |
946 | *count = remaining; | |
947 | } | |
948 | } | |
949 | ||
950 | /** | |
951 | * Filter suites by cipher user config | |
952 | */ | |
953 | static void filter_cipher_config_suites(private_tls_crypto_t *this, | |
954 | suite_algs_t suites[], int *count) | |
955 | { | |
956 | enumerator_t *enumerator; | |
957 | int i, remaining = 0; | |
958 | char *token, *config; | |
959 | ||
409adef4 TB |
960 | config = lib->settings->get_str(lib->settings, "%s.tls.cipher", NULL, |
961 | lib->ns); | |
24a5b935 MW |
962 | if (config) |
963 | { | |
964 | for (i = 0; i < *count; i++) | |
965 | { | |
966 | enumerator = enumerator_create_token(config, ",", " "); | |
967 | while (enumerator->enumerate(enumerator, &token)) | |
968 | { | |
74b9ba7c TB |
969 | const proposal_token_t *tok; |
970 | ||
971 | tok = lib->proposal->get_token(lib->proposal, token); | |
972 | if (tok != NULL && tok->type == ENCRYPTION_ALGORITHM && | |
973 | suites[i].encr == tok->algorithm && | |
974 | (!tok->keysize || suites[i].encr_size == tok->keysize / 8)) | |
24a5b935 MW |
975 | { |
976 | suites[remaining++] = suites[i]; | |
977 | break; | |
978 | } | |
979 | } | |
980 | enumerator->destroy(enumerator); | |
981 | } | |
982 | *count = remaining; | |
983 | } | |
984 | } | |
985 | ||
986 | /** | |
987 | * Filter suites by mac user config | |
988 | */ | |
989 | static void filter_mac_config_suites(private_tls_crypto_t *this, | |
990 | suite_algs_t suites[], int *count) | |
991 | { | |
992 | enumerator_t *enumerator; | |
993 | int i, remaining = 0; | |
994 | char *token, *config; | |
995 | ||
409adef4 TB |
996 | config = lib->settings->get_str(lib->settings, "%s.tls.mac", NULL, |
997 | lib->ns); | |
24a5b935 MW |
998 | if (config) |
999 | { | |
1000 | for (i = 0; i < *count; i++) | |
1001 | { | |
1002 | enumerator = enumerator_create_token(config, ",", " "); | |
1003 | while (enumerator->enumerate(enumerator, &token)) | |
1004 | { | |
24a5b935 | 1005 | if (strcaseeq(token, "sha1") && |
1dabf5bf | 1006 | suites[i].mac == AUTH_HMAC_SHA1_160) |
24a5b935 MW |
1007 | { |
1008 | suites[remaining++] = suites[i]; | |
1009 | break; | |
1010 | } | |
1011 | if (strcaseeq(token, "sha256") && | |
1dabf5bf | 1012 | suites[i].mac == AUTH_HMAC_SHA2_256_256) |
24a5b935 MW |
1013 | { |
1014 | suites[remaining++] = suites[i]; | |
1015 | break; | |
1016 | } | |
1017 | if (strcaseeq(token, "sha384") && | |
1dabf5bf | 1018 | suites[i].mac == AUTH_HMAC_SHA2_384_384) |
24a5b935 MW |
1019 | { |
1020 | suites[remaining++] = suites[i]; | |
1021 | break; | |
1022 | } | |
1023 | } | |
1024 | enumerator->destroy(enumerator); | |
1025 | } | |
1026 | *count = remaining; | |
1027 | } | |
1028 | } | |
1029 | ||
adb913ad MW |
1030 | /** |
1031 | * Filter for specific suites specified in strongswan.conf | |
1032 | */ | |
1033 | static void filter_specific_config_suites(private_tls_crypto_t *this, | |
1034 | suite_algs_t suites[], int *count) | |
1035 | { | |
1036 | enumerator_t *enumerator; | |
1037 | int i, remaining = 0, suite; | |
1038 | char *token, *config; | |
1039 | ||
409adef4 TB |
1040 | config = lib->settings->get_str(lib->settings, "%s.tls.suites", NULL, |
1041 | lib->ns); | |
adb913ad MW |
1042 | if (config) |
1043 | { | |
1044 | for (i = 0; i < *count; i++) | |
1045 | { | |
1046 | enumerator = enumerator_create_token(config, ",", " "); | |
1047 | while (enumerator->enumerate(enumerator, &token)) | |
1048 | { | |
064fe9c9 MW |
1049 | if (enum_from_name(tls_cipher_suite_names, token, &suite) && |
1050 | suite == suites[i].suite) | |
adb913ad MW |
1051 | { |
1052 | suites[remaining++] = suites[i]; | |
1053 | break; | |
1054 | } | |
1055 | } | |
1056 | enumerator->destroy(enumerator); | |
1057 | } | |
1058 | *count = remaining; | |
1059 | } | |
1060 | } | |
1061 | ||
e53bee9d PK |
1062 | /** |
1063 | * Filter key exchange curves by curve user config | |
1064 | */ | |
1065 | static bool filter_curve_config(tls_named_group_t curve) | |
1066 | { | |
1067 | enumerator_t *enumerator; | |
1068 | char *token, *config; | |
1069 | ||
e5b65657 PK |
1070 | config = lib->settings->get_str(lib->settings, "%s.tls.ke_group", NULL, |
1071 | lib->ns); | |
e53bee9d PK |
1072 | if (config) |
1073 | { | |
1074 | enumerator = enumerator_create_token(config, ",", " "); | |
1075 | while (enumerator->enumerate(enumerator, &token)) | |
1076 | { | |
1077 | const proposal_token_t *tok; | |
1078 | ||
1079 | tok = lib->proposal->get_token(lib->proposal, token); | |
1080 | if (tok != NULL && tok->type == DIFFIE_HELLMAN_GROUP && | |
1081 | curve == tls_ec_group_to_curve(tok->algorithm)) | |
1082 | { | |
1083 | enumerator->destroy(enumerator); | |
1084 | return TRUE; | |
1085 | } | |
1086 | } | |
1087 | enumerator->destroy(enumerator); | |
1088 | } | |
1089 | return !config; | |
1090 | } | |
1091 | ||
ac5717c9 MW |
1092 | /** |
1093 | * Filter out unsupported suites on given suite array | |
1094 | */ | |
1095 | static void filter_unsupported_suites(suite_algs_t suites[], int *count) | |
1096 | { | |
1097 | /* filter suite list by each algorithm */ | |
436571b2 TB |
1098 | filter_suite(suites, count, offsetof(suite_algs_t, encr), |
1099 | lib->crypto->create_aead_enumerator); | |
1100 | filter_suite(suites, count, offsetof(suite_algs_t, prf), | |
1101 | lib->crypto->create_prf_enumerator); | |
ac5717c9 MW |
1102 | filter_suite(suites, count, offsetof(suite_algs_t, encr), |
1103 | lib->crypto->create_crypter_enumerator); | |
ac5717c9 MW |
1104 | filter_suite(suites, count, offsetof(suite_algs_t, mac), |
1105 | lib->crypto->create_signer_enumerator); | |
ac5717c9 MW |
1106 | filter_suite(suites, count, offsetof(suite_algs_t, hash), |
1107 | lib->crypto->create_hasher_enumerator); | |
1108 | filter_suite(suites, count, offsetof(suite_algs_t, dh), | |
1109 | lib->crypto->create_dh_enumerator); | |
1110 | } | |
1111 | ||
a2bfc45b MW |
1112 | /** |
1113 | * Initialize the cipher suite list | |
1114 | */ | |
43c8f950 | 1115 | static void build_cipher_suite_list(private_tls_crypto_t *this) |
a2bfc45b MW |
1116 | { |
1117 | suite_algs_t suites[countof(suite_algs)]; | |
8a6edc08 | 1118 | tls_version_t min_version, max_version, new_min_version, new_max_version; |
43c8f950 | 1119 | bool require_encryption; |
281766c5 | 1120 | int count = 0, i; |
536dbc00 | 1121 | |
43c8f950 TB |
1122 | switch (this->tls->get_purpose(this->tls)) |
1123 | { | |
1124 | case TLS_PURPOSE_EAP_TLS: | |
1125 | case TLS_PURPOSE_GENERIC_NULLOK: | |
1126 | require_encryption = FALSE; | |
1127 | break; | |
1128 | case TLS_PURPOSE_EAP_PEAP: | |
1129 | case TLS_PURPOSE_EAP_TTLS: | |
1130 | case TLS_PURPOSE_GENERIC: | |
1131 | require_encryption = TRUE; | |
1132 | break; | |
1133 | default: | |
1134 | return; | |
1135 | } | |
1136 | ||
281766c5 TB |
1137 | min_version = this->tls->get_version_min(this->tls); |
1138 | max_version = this->tls->get_version_max(this->tls); | |
1139 | ||
1140 | /* copy all suites appropriate for the current min/max versions */ | |
1141 | for (i = 0; i < countof(suite_algs); i++) | |
536dbc00 | 1142 | { |
281766c5 TB |
1143 | if (suite_algs[i].min_version <= max_version && |
1144 | suite_algs[i].max_version >= min_version) | |
1145 | { | |
1146 | suites[count++] = suite_algs[i]; | |
1147 | } | |
18010de2 | 1148 | } |
ac5717c9 | 1149 | |
96b2fbcc MW |
1150 | if (require_encryption) |
1151 | { | |
ac5717c9 | 1152 | filter_null_suites(suites, &count); |
96b2fbcc | 1153 | } |
4254257f MW |
1154 | if (!this->rsa) |
1155 | { | |
1156 | filter_key_suites(this, suites, &count, KEY_RSA); | |
1157 | } | |
1158 | if (!this->ecdsa) | |
1159 | { | |
1160 | filter_key_suites(this, suites, &count, KEY_ECDSA); | |
1161 | } | |
1162 | ||
ac5717c9 | 1163 | filter_unsupported_suites(suites, &count); |
a2bfc45b | 1164 | |
24a5b935 MW |
1165 | /* filter suites with strongswan.conf options */ |
1166 | filter_key_exchange_config_suites(this, suites, &count); | |
1167 | filter_cipher_config_suites(this, suites, &count); | |
1168 | filter_mac_config_suites(this, suites, &count); | |
adb913ad | 1169 | filter_specific_config_suites(this, suites, &count); |
24a5b935 | 1170 | |
56a1167b AS |
1171 | free(this->suites); |
1172 | this->suite_count = count; | |
1173 | this->suites = malloc(sizeof(tls_cipher_suite_t) * count); | |
1174 | ||
3c19b346 | 1175 | DBG2(DBG_TLS, "%d supported TLS cipher suites:", count); |
8a6edc08 PK |
1176 | new_min_version = max_version; |
1177 | new_max_version = min_version; | |
a2bfc45b MW |
1178 | for (i = 0; i < count; i++) |
1179 | { | |
3c19b346 | 1180 | DBG2(DBG_TLS, " %N", tls_cipher_suite_names, suites[i].suite); |
56a1167b | 1181 | this->suites[i] = suites[i].suite; |
8a6edc08 PK |
1182 | |
1183 | /* set TLS min/max versions appropriate to the final cipher suites */ | |
1184 | new_max_version = max(new_max_version, suites[i].max_version); | |
1185 | new_min_version = min(new_min_version, suites[i].min_version); | |
1186 | } | |
1187 | new_max_version = min(new_max_version, max_version); | |
1188 | new_min_version = max(new_min_version, min_version); | |
1189 | ||
8cf3998f TB |
1190 | if ((min_version != new_min_version || max_version != new_max_version) && |
1191 | this->tls->set_version(this->tls, new_min_version, new_max_version)) | |
8a6edc08 | 1192 | { |
8a6edc08 | 1193 | DBG2(DBG_TLS, "TLS min/max %N/%N according to the cipher suites", |
8cf3998f TB |
1194 | tls_numeric_version_names, new_min_version, |
1195 | tls_numeric_version_names, new_max_version); | |
a2bfc45b | 1196 | } |
18010de2 MW |
1197 | } |
1198 | ||
1199 | METHOD(tls_crypto_t, get_cipher_suites, int, | |
1200 | private_tls_crypto_t *this, tls_cipher_suite_t **suites) | |
1201 | { | |
43c8f950 TB |
1202 | if (!this->suites) |
1203 | { | |
1204 | build_cipher_suite_list(this); | |
1205 | } | |
06424efa TB |
1206 | if (suites) |
1207 | { | |
1208 | *suites = this->suites; | |
1209 | } | |
18010de2 MW |
1210 | return this->suite_count; |
1211 | } | |
1212 | ||
d3204677 MW |
1213 | /** |
1214 | * Create NULL encryption transforms | |
1215 | */ | |
1216 | static bool create_null(private_tls_crypto_t *this, suite_algs_t *algs) | |
1217 | { | |
1218 | this->aead_in = tls_aead_create_null(algs->mac); | |
1219 | this->aead_out = tls_aead_create_null(algs->mac); | |
1220 | if (!this->aead_in || !this->aead_out) | |
1221 | { | |
1222 | DBG1(DBG_TLS, "selected TLS MAC %N not supported", | |
1223 | integrity_algorithm_names, algs->mac); | |
1224 | return FALSE; | |
1225 | } | |
1226 | return TRUE; | |
1227 | } | |
1228 | ||
1229 | /** | |
1230 | * Create traditional transforms | |
1231 | */ | |
1232 | static bool create_traditional(private_tls_crypto_t *this, suite_algs_t *algs) | |
1233 | { | |
7a2b0266 | 1234 | if (this->tls->get_version_max(this->tls) < TLS_1_1) |
d3204677 MW |
1235 | { |
1236 | this->aead_in = tls_aead_create_implicit(algs->mac, | |
1237 | algs->encr, algs->encr_size); | |
1238 | this->aead_out = tls_aead_create_implicit(algs->mac, | |
1239 | algs->encr, algs->encr_size); | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | this->aead_in = tls_aead_create_explicit(algs->mac, | |
1244 | algs->encr, algs->encr_size); | |
1245 | this->aead_out = tls_aead_create_explicit(algs->mac, | |
1246 | algs->encr, algs->encr_size); | |
1247 | } | |
1248 | if (!this->aead_in || !this->aead_out) | |
1249 | { | |
1250 | DBG1(DBG_TLS, "selected TLS transforms %N-%u-%N not supported", | |
1251 | encryption_algorithm_names, algs->encr, algs->encr_size * 8, | |
1252 | integrity_algorithm_names, algs->mac); | |
1253 | return FALSE; | |
1254 | } | |
1255 | return TRUE; | |
1256 | } | |
1257 | ||
f0f30117 MW |
1258 | /** |
1259 | * Create AEAD transforms | |
1260 | */ | |
1261 | static bool create_aead(private_tls_crypto_t *this, suite_algs_t *algs) | |
1262 | { | |
7a2b0266 | 1263 | if (this->tls->get_version_max(this->tls) < TLS_1_3) |
1264 | { | |
1265 | this->aead_in = tls_aead_create_aead(algs->encr, algs->encr_size); | |
1266 | this->aead_out = tls_aead_create_aead(algs->encr, algs->encr_size); | |
1267 | } | |
1268 | else | |
1269 | { | |
1270 | this->aead_in = tls_aead_create_seq(algs->encr, algs->encr_size); | |
1271 | this->aead_out = tls_aead_create_seq(algs->encr, algs->encr_size); | |
7a2b0266 | 1272 | } |
f0f30117 MW |
1273 | if (!this->aead_in || !this->aead_out) |
1274 | { | |
1275 | DBG1(DBG_TLS, "selected TLS transforms %N-%u not supported", | |
1276 | encryption_algorithm_names, algs->encr, algs->encr_size * 8); | |
1277 | return FALSE; | |
1278 | } | |
1279 | return TRUE; | |
1280 | } | |
1281 | ||
d3204677 MW |
1282 | /** |
1283 | * Clean up and unset AEAD transforms | |
1284 | */ | |
1285 | static void destroy_aeads(private_tls_crypto_t *this) | |
1286 | { | |
1287 | DESTROY_IF(this->aead_in); | |
1288 | DESTROY_IF(this->aead_out); | |
1289 | this->aead_in = this->aead_out = NULL; | |
1290 | } | |
1291 | ||
84543e6e MW |
1292 | /** |
1293 | * Create crypto primitives | |
1294 | */ | |
4cdade5a | 1295 | static bool create_ciphers(private_tls_crypto_t *this, suite_algs_t *algs) |
84543e6e | 1296 | { |
d3204677 | 1297 | destroy_aeads(this); |
64e63c68 | 1298 | DESTROY_IF(this->hkdf); |
84543e6e | 1299 | DESTROY_IF(this->prf); |
7a2b0266 | 1300 | if (this->tls->get_version_max(this->tls) < TLS_1_3) |
84543e6e | 1301 | { |
7a2b0266 | 1302 | if (this->tls->get_version_max(this->tls) < TLS_1_2) |
1303 | { | |
1304 | this->prf = tls_prf_create_10(); | |
1305 | } | |
1306 | else | |
1307 | { | |
1308 | this->prf = tls_prf_create_12(algs->prf); | |
1309 | } | |
1310 | if (!this->prf) | |
1311 | { | |
1312 | DBG1(DBG_TLS, "selected TLS PRF not supported"); | |
1313 | return FALSE; | |
1314 | } | |
84543e6e MW |
1315 | } |
1316 | else | |
1317 | { | |
7a2b0266 | 1318 | this->hkdf = tls_hkdf_create(algs->hash, chunk_empty); |
1319 | if (!this->hkdf) | |
1320 | { | |
1321 | DBG1(DBG_TLS, "TLS HKDF creation unsuccessful"); | |
1322 | return FALSE; | |
1323 | } | |
84543e6e | 1324 | } |
84543e6e MW |
1325 | if (algs->encr == ENCR_NULL) |
1326 | { | |
d3204677 MW |
1327 | if (create_null(this, algs)) |
1328 | { | |
1329 | return TRUE; | |
1330 | } | |
84543e6e | 1331 | } |
f0f30117 MW |
1332 | else if (encryption_algorithm_is_aead(algs->encr)) |
1333 | { | |
1334 | if (create_aead(this, algs)) | |
1335 | { | |
1336 | return TRUE; | |
1337 | } | |
1338 | } | |
84543e6e MW |
1339 | else |
1340 | { | |
d3204677 | 1341 | if (create_traditional(this, algs)) |
84543e6e | 1342 | { |
d3204677 | 1343 | return TRUE; |
84543e6e MW |
1344 | } |
1345 | } | |
d3204677 MW |
1346 | destroy_aeads(this); |
1347 | return FALSE; | |
84543e6e MW |
1348 | } |
1349 | ||
18010de2 | 1350 | METHOD(tls_crypto_t, select_cipher_suite, tls_cipher_suite_t, |
4cdade5a MW |
1351 | private_tls_crypto_t *this, tls_cipher_suite_t *suites, int count, |
1352 | key_type_t key) | |
18010de2 | 1353 | { |
4cdade5a | 1354 | suite_algs_t *algs; |
18010de2 MW |
1355 | int i, j; |
1356 | ||
1357 | for (i = 0; i < this->suite_count; i++) | |
1358 | { | |
1359 | for (j = 0; j < count; j++) | |
1360 | { | |
1361 | if (this->suites[i] == suites[j]) | |
1362 | { | |
4cdade5a MW |
1363 | algs = find_suite(this->suites[i]); |
1364 | if (algs) | |
84543e6e | 1365 | { |
34f66ce6 PK |
1366 | if (key == KEY_ANY || key == algs->key || |
1367 | (algs->key == KEY_ECDSA && key == KEY_ED25519) || | |
1368 | (algs->key == KEY_ECDSA && key == KEY_ED448)) | |
4cdade5a MW |
1369 | { |
1370 | if (create_ciphers(this, algs)) | |
1371 | { | |
1372 | this->suite = this->suites[i]; | |
1373 | return this->suite; | |
1374 | } | |
1375 | } | |
84543e6e | 1376 | } |
18010de2 MW |
1377 | } |
1378 | } | |
1379 | } | |
1380 | return 0; | |
1381 | } | |
1382 | ||
48d6b57c | 1383 | /** |
1b593e1d TB |
1384 | * Parameters for RSA/PSS signature schemes |
1385 | */ | |
1386 | #define PSS_PARAMS(bits) static rsa_pss_params_t pss_params_sha##bits = { \ | |
1387 | .hash = HASH_SHA##bits, \ | |
1388 | .mgf1_hash = HASH_SHA##bits, \ | |
1389 | .salt_len = HASH_SIZE_SHA##bits, \ | |
1390 | } | |
1391 | ||
1392 | PSS_PARAMS(256); | |
1393 | PSS_PARAMS(384); | |
1394 | PSS_PARAMS(512); | |
1395 | ||
e3757300 | 1396 | typedef struct { |
1b593e1d TB |
1397 | tls_signature_scheme_t sig; |
1398 | signature_params_t params; | |
1399 | /* min/max versions for use in CertificateVerify */ | |
1400 | tls_version_t min_version; | |
1401 | tls_version_t max_version; | |
e3757300 PK |
1402 | } scheme_algs_t; |
1403 | ||
1404 | /** | |
1405 | * Map TLS signature schemes, ordered by preference | |
1406 | */ | |
1407 | static scheme_algs_t schemes[] = { | |
1b593e1d TB |
1408 | { TLS_SIG_ECDSA_SHA256, { .scheme = SIGN_ECDSA_WITH_SHA256_DER }, |
1409 | TLS_1_0, TLS_1_3 }, | |
1410 | { TLS_SIG_ECDSA_SHA384, { .scheme = SIGN_ECDSA_WITH_SHA384_DER }, | |
1411 | TLS_1_0, TLS_1_3 }, | |
1412 | { TLS_SIG_ECDSA_SHA512, { .scheme = SIGN_ECDSA_WITH_SHA512_DER }, | |
1413 | TLS_1_0, TLS_1_3 }, | |
1414 | { TLS_SIG_ED25519, { .scheme = SIGN_ED25519 }, | |
34f66ce6 | 1415 | TLS_1_0, TLS_1_3 }, |
1b593e1d | 1416 | { TLS_SIG_ED448, { .scheme = SIGN_ED448 }, |
34f66ce6 | 1417 | TLS_1_0, TLS_1_3 }, |
1b593e1d TB |
1418 | { TLS_SIG_RSA_PSS_RSAE_SHA256, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha256, }, |
1419 | TLS_1_2, TLS_1_3 }, | |
1420 | { TLS_SIG_RSA_PSS_RSAE_SHA384, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha384, }, | |
1421 | TLS_1_2, TLS_1_3 }, | |
1422 | { TLS_SIG_RSA_PSS_RSAE_SHA512, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha512, }, | |
1423 | TLS_1_2, TLS_1_3 }, | |
1424 | /* the parameters for the next three should actually be taken from the | |
1425 | * public key, we currently don't have an API for that, so assume defaults */ | |
1426 | { TLS_SIG_RSA_PSS_PSS_SHA256, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha256, }, | |
1427 | TLS_1_2, TLS_1_3 }, | |
1428 | { TLS_SIG_RSA_PSS_PSS_SHA384, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha384, }, | |
1429 | TLS_1_2, TLS_1_3 }, | |
1430 | { TLS_SIG_RSA_PSS_PSS_SHA512, { .scheme = SIGN_RSA_EMSA_PSS, .params = &pss_params_sha512, }, | |
1431 | TLS_1_2, TLS_1_3 }, | |
1432 | { TLS_SIG_RSA_PKCS1_SHA256, { .scheme = SIGN_RSA_EMSA_PKCS1_SHA2_256 }, | |
1433 | TLS_1_0, TLS_1_2 }, | |
1434 | { TLS_SIG_RSA_PKCS1_SHA384, { .scheme = SIGN_RSA_EMSA_PKCS1_SHA2_384 }, | |
1435 | TLS_1_0, TLS_1_2 }, | |
1436 | { TLS_SIG_RSA_PKCS1_SHA512, { .scheme = SIGN_RSA_EMSA_PKCS1_SHA2_512 }, | |
1437 | TLS_1_0, TLS_1_2 }, | |
48d6b57c MW |
1438 | }; |
1439 | ||
e3757300 PK |
1440 | /** |
1441 | * Filter signature scheme config | |
1442 | */ | |
1443 | static bool filter_signature_scheme_config(tls_signature_scheme_t signature) | |
1444 | { | |
1445 | enumerator_t *enumerator; | |
1446 | char *token, *config; | |
1447 | ||
1448 | config = lib->settings->get_str(lib->settings, "%s.tls.signature", NULL, | |
1449 | lib->ns); | |
1450 | if (config) | |
1451 | { | |
1452 | enumerator = enumerator_create_token(config, ",", " "); | |
1453 | while (enumerator->enumerate(enumerator, &token)) | |
1454 | { | |
1455 | tls_signature_scheme_t sig; | |
1456 | ||
1457 | if (enum_from_name(tls_signature_scheme_names, token, &sig) && | |
1458 | sig == signature) | |
1459 | { | |
1460 | enumerator->destroy(enumerator); | |
1461 | return TRUE; | |
1462 | } | |
1463 | } | |
1464 | enumerator->destroy(enumerator); | |
1465 | } | |
1466 | return !config; | |
1467 | } | |
1468 | ||
d29a82a9 | 1469 | METHOD(tls_crypto_t, get_signature_algorithms, void, |
1b593e1d | 1470 | private_tls_crypto_t *this, bio_writer_t *writer, bool cert) |
d29a82a9 | 1471 | { |
7e432eff | 1472 | bio_writer_t *supported; |
1b593e1d | 1473 | tls_version_t min_version, max_version; |
48d6b57c | 1474 | int i; |
d29a82a9 | 1475 | |
7e432eff | 1476 | supported = bio_writer_create(32); |
1b593e1d TB |
1477 | |
1478 | if (!cert) | |
1479 | { | |
1480 | min_version = this->tls->get_version_min(this->tls); | |
1481 | max_version = this->tls->get_version_max(this->tls); | |
1482 | } | |
48d6b57c MW |
1483 | |
1484 | for (i = 0; i < countof(schemes); i++) | |
d29a82a9 | 1485 | { |
1b593e1d TB |
1486 | if ((cert || (schemes[i].min_version <= max_version && |
1487 | schemes[i].max_version >= min_version)) && | |
1488 | lib->plugins->has_feature(lib->plugins, | |
e3757300 PK |
1489 | PLUGIN_PROVIDE(PUBKEY_VERIFY, schemes[i].params.scheme)) && |
1490 | filter_signature_scheme_config(schemes[i].sig)) | |
d29a82a9 | 1491 | { |
1b593e1d | 1492 | supported->write_uint16(supported, schemes[i].sig); |
7a2b0266 | 1493 | } |
d29a82a9 | 1494 | } |
d29a82a9 MW |
1495 | |
1496 | writer->write_data16(writer, supported->get_buf(supported)); | |
1497 | supported->destroy(supported); | |
1498 | } | |
1499 | ||
48d6b57c | 1500 | /** |
1b593e1d | 1501 | * Get the signature parameters from a TLS signature scheme |
48d6b57c | 1502 | */ |
06112f3f PK |
1503 | static signature_params_t *params_for_scheme(tls_signature_scheme_t sig, |
1504 | bool sign) | |
48d6b57c MW |
1505 | { |
1506 | int i; | |
1507 | ||
1b593e1d | 1508 | for (i = 0; i < countof(schemes); i++) |
48d6b57c | 1509 | { |
7fbe2e27 | 1510 | /* strongSwan supports only RSA_PSS_RSAE schemes for signing but can |
06112f3f PK |
1511 | * verify public keys in rsaEncryption as well as rsassaPss encoding. */ |
1512 | if (sign && (sig == TLS_SIG_RSA_PSS_PSS_SHA256 || | |
1513 | sig == TLS_SIG_RSA_PSS_PSS_SHA384 || | |
1514 | sig == TLS_SIG_RSA_PSS_PSS_SHA512)) | |
7fbe2e27 PK |
1515 | { |
1516 | continue; | |
1517 | } | |
1b593e1d | 1518 | if (schemes[i].sig == sig) |
48d6b57c | 1519 | { |
1b593e1d | 1520 | return &schemes[i].params; |
48d6b57c MW |
1521 | } |
1522 | } | |
1b593e1d | 1523 | return NULL; |
48d6b57c MW |
1524 | } |
1525 | ||
3f7bb88b MW |
1526 | /** |
1527 | * Mapping groups to TLS named curves | |
1528 | */ | |
1529 | static struct { | |
1530 | diffie_hellman_group_t group; | |
7a2b0266 | 1531 | tls_named_group_t curve; |
3f7bb88b MW |
1532 | } curves[] = { |
1533 | { ECP_256_BIT, TLS_SECP256R1}, | |
1534 | { ECP_384_BIT, TLS_SECP384R1}, | |
1535 | { ECP_521_BIT, TLS_SECP521R1}, | |
1536 | { ECP_224_BIT, TLS_SECP224R1}, | |
1537 | { ECP_192_BIT, TLS_SECP192R1}, | |
3101120c TB |
1538 | { CURVE_25519, TLS_CURVE25519}, |
1539 | { CURVE_448, TLS_CURVE448}, | |
3f7bb88b MW |
1540 | }; |
1541 | ||
525cc46c TB |
1542 | CALLBACK(group_filter, bool, |
1543 | void *null, enumerator_t *orig, va_list args) | |
3f7bb88b | 1544 | { |
e53bee9d PK |
1545 | diffie_hellman_group_t group, *group_out; |
1546 | tls_named_group_t curve, *curve_out; | |
525cc46c | 1547 | char *plugin; |
3f7bb88b | 1548 | |
e53bee9d | 1549 | VA_ARGS_VGET(args, group_out, curve_out); |
525cc46c TB |
1550 | |
1551 | while (orig->enumerate(orig, &group, &plugin)) | |
3f7bb88b | 1552 | { |
e53bee9d PK |
1553 | curve = tls_ec_group_to_curve(group); |
1554 | if (curve) | |
3f7bb88b | 1555 | { |
e53bee9d | 1556 | if (group_out) |
3f7bb88b | 1557 | { |
e53bee9d PK |
1558 | *group_out = group; |
1559 | } | |
1560 | if (curve_out) | |
1561 | { | |
1562 | *curve_out = curve; | |
1563 | } | |
1564 | return TRUE; | |
1565 | } | |
1566 | } | |
1567 | return FALSE; | |
1568 | } | |
1569 | ||
1570 | CALLBACK(config_filter, bool, | |
1571 | void *null, enumerator_t *orig, va_list args) | |
1572 | { | |
1573 | diffie_hellman_group_t group, *group_out; | |
1574 | tls_named_group_t curve, *curve_out; | |
1575 | ||
1576 | VA_ARGS_VGET(args, group_out, curve_out); | |
1577 | ||
1578 | while (orig->enumerate(orig, &group, &curve)) | |
1579 | { | |
1580 | if (filter_curve_config(curve)) | |
f77ecf07 | 1581 | |
e53bee9d PK |
1582 | { |
1583 | if (group_out) | |
1584 | { | |
1585 | *group_out = group; | |
3f7bb88b | 1586 | } |
e53bee9d PK |
1587 | if (curve_out) |
1588 | { | |
1589 | *curve_out = curve; | |
1590 | } | |
1591 | return TRUE; | |
3f7bb88b MW |
1592 | } |
1593 | } | |
1594 | return FALSE; | |
1595 | } | |
1596 | ||
1597 | METHOD(tls_crypto_t, create_ec_enumerator, enumerator_t*, | |
1598 | private_tls_crypto_t *this) | |
37a59a8f | 1599 | { |
3f7bb88b | 1600 | return enumerator_create_filter( |
e53bee9d PK |
1601 | enumerator_create_filter( |
1602 | lib->crypto->create_dh_enumerator(lib->crypto), | |
1603 | group_filter, NULL, NULL), | |
1604 | config_filter, NULL, NULL); | |
37a59a8f MW |
1605 | } |
1606 | ||
f77ecf07 TB |
1607 | /** |
1608 | * Check if the given ECDH group is supported or return the first one we | |
1609 | * actually do support. | |
1610 | */ | |
1611 | static diffie_hellman_group_t supported_ec_group(private_tls_crypto_t *this, | |
1612 | diffie_hellman_group_t orig) | |
1613 | { | |
1614 | diffie_hellman_group_t current, first = MODP_NONE; | |
1615 | enumerator_t *enumerator; | |
1616 | ||
1617 | enumerator = create_ec_enumerator(this); | |
1618 | while (enumerator->enumerate(enumerator, ¤t, NULL)) | |
1619 | { | |
1620 | if (current == orig) | |
1621 | { | |
1622 | enumerator->destroy(enumerator); | |
1623 | return orig; | |
1624 | } | |
1625 | else if (first == MODP_NONE) | |
1626 | { | |
1627 | first = current; | |
1628 | } | |
1629 | } | |
1630 | enumerator->destroy(enumerator); | |
1631 | return first; | |
1632 | } | |
1633 | ||
1634 | METHOD(tls_crypto_t, get_dh_group, diffie_hellman_group_t, | |
1635 | private_tls_crypto_t *this) | |
1636 | { | |
1637 | suite_algs_t *algs; | |
1638 | ||
1639 | algs = find_suite(this->suite); | |
1640 | if (algs) | |
1641 | { | |
1642 | if (diffie_hellman_group_is_ec(algs->dh)) | |
1643 | { | |
1644 | return supported_ec_group(this, algs->dh); | |
1645 | } | |
1646 | return algs->dh; | |
1647 | } | |
1648 | return MODP_NONE; | |
1649 | } | |
1650 | ||
dc9f34be MW |
1651 | METHOD(tls_crypto_t, set_protection, void, |
1652 | private_tls_crypto_t *this, tls_protection_t *protection) | |
1653 | { | |
1654 | this->protection = protection; | |
1655 | } | |
1656 | ||
84d67ead MW |
1657 | METHOD(tls_crypto_t, append_handshake, void, |
1658 | private_tls_crypto_t *this, tls_handshake_type_t type, chunk_t data) | |
1659 | { | |
b12c53ce | 1660 | uint32_t header; |
84d67ead MW |
1661 | |
1662 | /* reconstruct handshake header */ | |
1663 | header = htonl(data.len | (type << 24)); | |
1664 | this->handshake = chunk_cat("mcc", this->handshake, | |
1665 | chunk_from_thing(header), data); | |
1666 | } | |
1667 | ||
1668 | /** | |
d29a82a9 | 1669 | * Create a hash using the suites HASH algorithm |
84d67ead | 1670 | */ |
d29a82a9 | 1671 | static bool hash_data(private_tls_crypto_t *this, chunk_t data, chunk_t *hash) |
84d67ead | 1672 | { |
7a2b0266 | 1673 | if (this->tls->get_version_max(this->tls) >= TLS_1_2) |
84d67ead MW |
1674 | { |
1675 | hasher_t *hasher; | |
1676 | suite_algs_t *alg; | |
1677 | ||
1678 | alg = find_suite(this->suite); | |
1679 | if (!alg) | |
1680 | { | |
1681 | return FALSE; | |
1682 | } | |
1683 | hasher = lib->crypto->create_hasher(lib->crypto, alg->hash); | |
87dd205b | 1684 | if (!hasher || !hasher->allocate_hash(hasher, data, hash)) |
84d67ead | 1685 | { |
3c19b346 | 1686 | DBG1(DBG_TLS, "%N not supported", hash_algorithm_names, alg->hash); |
87dd205b | 1687 | DESTROY_IF(hasher); |
84d67ead MW |
1688 | return FALSE; |
1689 | } | |
84d67ead MW |
1690 | hasher->destroy(hasher); |
1691 | } | |
1692 | else | |
1693 | { | |
1694 | hasher_t *md5, *sha1; | |
1695 | char buf[HASH_SIZE_MD5 + HASH_SIZE_SHA1]; | |
1696 | ||
1697 | md5 = lib->crypto->create_hasher(lib->crypto, HASH_MD5); | |
8bd6a30a | 1698 | if (!md5 || !md5->get_hash(md5, data, buf)) |
84d67ead | 1699 | { |
3c19b346 | 1700 | DBG1(DBG_TLS, "%N not supported", hash_algorithm_names, HASH_MD5); |
8bd6a30a | 1701 | DESTROY_IF(md5); |
84d67ead MW |
1702 | return FALSE; |
1703 | } | |
84d67ead MW |
1704 | md5->destroy(md5); |
1705 | sha1 = lib->crypto->create_hasher(lib->crypto, HASH_SHA1); | |
8bd6a30a | 1706 | if (!sha1 || !sha1->get_hash(sha1, data, buf + HASH_SIZE_MD5)) |
84d67ead | 1707 | { |
3c19b346 | 1708 | DBG1(DBG_TLS, "%N not supported", hash_algorithm_names, HASH_SHA1); |
8bd6a30a | 1709 | DESTROY_IF(sha1); |
84d67ead MW |
1710 | return FALSE; |
1711 | } | |
84d67ead MW |
1712 | sha1->destroy(sha1); |
1713 | ||
1714 | *hash = chunk_clone(chunk_from_thing(buf)); | |
1715 | } | |
1716 | return TRUE; | |
1717 | } | |
1718 | ||
2271d67f TB |
1719 | METHOD(tls_crypto_t, hash_handshake, bool, |
1720 | private_tls_crypto_t *this, chunk_t *out) | |
1721 | { | |
1722 | chunk_t hash; | |
1723 | ||
1724 | if (!hash_data(this, this->handshake, &hash)) | |
1725 | { | |
1726 | return FALSE; | |
1727 | } | |
1728 | ||
1729 | chunk_free(&this->handshake); | |
1730 | append_handshake(this, TLS_MESSAGE_HASH, hash); | |
1731 | ||
1732 | if (out) | |
1733 | { | |
1734 | *out = hash; | |
1735 | } | |
1736 | else | |
1737 | { | |
1738 | free(hash.ptr); | |
1739 | } | |
1740 | return TRUE; | |
1741 | } | |
1742 | ||
de983a3c TB |
1743 | /** |
1744 | * TLS 1.3 static part of the data the server signs (64 spaces followed by the | |
1745 | * context string "TLS 1.3, server CertificateVerify" and a 0 byte). | |
1746 | */ | |
1747 | static chunk_t tls13_sig_data_server = chunk_from_chars( | |
1748 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1749 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1750 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1751 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1752 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1753 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1754 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1755 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1756 | 0x54, 0x4c, 0x53, 0x20, 0x31, 0x2e, 0x33, 0x2c, | |
1757 | 0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, | |
1758 | 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, | |
1759 | 0x61, 0x74, 0x65, 0x56, 0x65, 0x72, 0x69, 0x66, | |
1760 | 0x79, 0x00, | |
1761 | ); | |
1762 | ||
d2fc9b09 PK |
1763 | /** |
1764 | * TLS 1.3 static part of the data the peer signs (64 spaces followed by the | |
1765 | * context string "TLS 1.3, client CertificateVerify" and a 0 byte). | |
1766 | */ | |
1767 | static chunk_t tls13_sig_data_client = chunk_from_chars( | |
1768 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1769 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1770 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1771 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1772 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1773 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1774 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1775 | 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
1776 | 0x54, 0x4c, 0x53, 0x20, 0x31, 0x2e, 0x33, 0x2c, | |
1777 | 0x20, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20, | |
1778 | 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, | |
1779 | 0x61, 0x74, 0x65, 0x56, 0x65, 0x72, 0x69, 0x66, | |
1780 | 0x79, 0x00, | |
1781 | ); | |
1782 | ||
d29a82a9 | 1783 | METHOD(tls_crypto_t, sign, bool, |
7e432eff | 1784 | private_tls_crypto_t *this, private_key_t *key, bio_writer_t *writer, |
d29a82a9 | 1785 | chunk_t data, chunk_t hashsig) |
dbb7c030 | 1786 | { |
7a2b0266 | 1787 | if (this->tls->get_version_max(this->tls) >= TLS_1_2) |
84d67ead | 1788 | { |
1b593e1d TB |
1789 | /* fallback to SHA1/RSA and SHA1/ECDSA */ |
1790 | const chunk_t hashsig_def = chunk_from_chars(0x02, 0x01, 0x02, 0x03); | |
1791 | signature_params_t *params; | |
1792 | key_type_t type; | |
1793 | uint16_t scheme; | |
7e432eff | 1794 | bio_reader_t *reader; |
dbb7c030 MW |
1795 | chunk_t sig; |
1796 | bool done = FALSE; | |
1797 | ||
7fbe2e27 PK |
1798 | if (this->tls->get_version_max(this->tls) >= TLS_1_3) |
1799 | { | |
1800 | chunk_t transcript_hash; | |
1801 | ||
1802 | if (!hash_data(this, data, &transcript_hash)) | |
1803 | { | |
1804 | DBG1(DBG_TLS, "unable to create transcript hash"); | |
1805 | return FALSE; | |
1806 | } | |
9ef46cfa PK |
1807 | if (this->tls->is_server(this->tls)) |
1808 | { | |
1809 | data = chunk_cata("cm", tls13_sig_data_server, transcript_hash); | |
1810 | } | |
1811 | else | |
1812 | { | |
1813 | data = chunk_cata("cm", tls13_sig_data_client, transcript_hash); | |
1814 | } | |
7fbe2e27 PK |
1815 | } |
1816 | ||
d29a82a9 MW |
1817 | if (!hashsig.len) |
1818 | { /* fallback if none given */ | |
d5cf2d1f | 1819 | hashsig = hashsig_def; |
d29a82a9 | 1820 | } |
1b593e1d | 1821 | type = key->get_type(key); |
7e432eff | 1822 | reader = bio_reader_create(hashsig); |
dbb7c030 | 1823 | while (reader->remaining(reader) >= 2) |
400df4ca | 1824 | { |
1b593e1d | 1825 | if (reader->read_uint16(reader, &scheme)) |
dbb7c030 | 1826 | { |
06112f3f | 1827 | params = params_for_scheme(scheme, TRUE); |
1b593e1d TB |
1828 | if (params && |
1829 | type == key_type_from_signature_scheme(params->scheme) && | |
1830 | key->sign(key, params->scheme, params->params, data, &sig)) | |
dbb7c030 MW |
1831 | { |
1832 | done = TRUE; | |
1833 | break; | |
1834 | } | |
1835 | } | |
1836 | } | |
1837 | reader->destroy(reader); | |
1838 | if (!done) | |
1839 | { | |
1840 | DBG1(DBG_TLS, "none of the proposed hash/sig algorithms supported"); | |
400df4ca MW |
1841 | return FALSE; |
1842 | } | |
1b593e1d TB |
1843 | DBG2(DBG_TLS, "created signature with %N", tls_signature_scheme_names, |
1844 | scheme); | |
1845 | writer->write_uint16(writer, scheme); | |
400df4ca MW |
1846 | writer->write_data16(writer, sig); |
1847 | free(sig.ptr); | |
1848 | } | |
1849 | else | |
1850 | { | |
dbb7c030 | 1851 | chunk_t sig, hash; |
d29a82a9 | 1852 | bool done; |
dbb7c030 MW |
1853 | |
1854 | switch (key->get_type(key)) | |
400df4ca | 1855 | { |
dbb7c030 | 1856 | case KEY_RSA: |
d29a82a9 | 1857 | if (!hash_data(this, data, &hash)) |
dbb7c030 MW |
1858 | { |
1859 | return FALSE; | |
1860 | } | |
de280c2e TB |
1861 | done = key->sign(key, SIGN_RSA_EMSA_PKCS1_NULL, NULL, hash, |
1862 | &sig); | |
d29a82a9 MW |
1863 | free(hash.ptr); |
1864 | if (!done) | |
dbb7c030 | 1865 | { |
dbb7c030 MW |
1866 | return FALSE; |
1867 | } | |
d29a82a9 | 1868 | DBG2(DBG_TLS, "created signature with MD5+SHA1/RSA"); |
dbb7c030 MW |
1869 | break; |
1870 | case KEY_ECDSA: | |
de280c2e | 1871 | if (!key->sign(key, SIGN_ECDSA_WITH_SHA1_DER, NULL, data, &sig)) |
dbb7c030 MW |
1872 | { |
1873 | return FALSE; | |
1874 | } | |
d29a82a9 | 1875 | DBG2(DBG_TLS, "created signature with SHA1/ECDSA"); |
dbb7c030 | 1876 | break; |
34f66ce6 PK |
1877 | case KEY_ED25519: |
1878 | if (!key->sign(key, SIGN_ED25519, NULL, data, &sig)) | |
1879 | { | |
1880 | return FALSE; | |
1881 | } | |
1882 | DBG2(DBG_TLS, "created signature with Ed25519"); | |
1883 | break; | |
1884 | case KEY_ED448: | |
1885 | if (!key->sign(key, SIGN_ED448, NULL, data, &sig)) | |
1886 | { | |
1887 | return FALSE; | |
1888 | } | |
1889 | DBG2(DBG_TLS, "created signature with Ed448"); | |
1890 | break; | |
dbb7c030 MW |
1891 | default: |
1892 | return FALSE; | |
400df4ca MW |
1893 | } |
1894 | writer->write_data16(writer, sig); | |
400df4ca MW |
1895 | free(sig.ptr); |
1896 | } | |
1897 | return TRUE; | |
1898 | } | |
1899 | ||
d29a82a9 | 1900 | METHOD(tls_crypto_t, verify, bool, |
7e432eff | 1901 | private_tls_crypto_t *this, public_key_t *key, bio_reader_t *reader, |
d29a82a9 | 1902 | chunk_t data) |
400df4ca | 1903 | { |
de983a3c | 1904 | if (this->tls->get_version_max(this->tls) >= TLS_1_2) |
7a2b0266 | 1905 | { |
1b593e1d TB |
1906 | signature_params_t *params; |
1907 | uint16_t scheme; | |
de983a3c | 1908 | chunk_t sig; |
7a2b0266 | 1909 | |
1b593e1d | 1910 | if (!reader->read_uint16(reader, &scheme) || |
7a2b0266 | 1911 | !reader->read_data16(reader, &sig)) |
1912 | { | |
1913 | DBG1(DBG_TLS, "received invalid signature"); | |
1914 | return FALSE; | |
1915 | } | |
06112f3f | 1916 | params = params_for_scheme(scheme, FALSE); |
1b593e1d | 1917 | if (!params) |
7a2b0266 | 1918 | { |
1b593e1d TB |
1919 | DBG1(DBG_TLS, "signature algorithms %N not supported", |
1920 | tls_signature_scheme_names, scheme); | |
7a2b0266 | 1921 | return FALSE; |
1922 | } | |
9ef46cfa | 1923 | if (this->tls->get_version_max(this->tls) >= TLS_1_3) |
7a2b0266 | 1924 | { |
de983a3c | 1925 | chunk_t transcript_hash; |
84d67ead | 1926 | |
de983a3c TB |
1927 | if (!hash_data(this, data, &transcript_hash)) |
1928 | { | |
1929 | DBG1(DBG_TLS, "Unable to create transcript hash"); | |
1930 | return FALSE; | |
1931 | } | |
1932 | ||
d2fc9b09 PK |
1933 | if (this->tls->is_server(this->tls)) |
1934 | { | |
1935 | data = chunk_cata("cm", tls13_sig_data_client, transcript_hash); | |
1936 | } | |
1937 | else | |
1938 | { | |
1939 | data = chunk_cata("cm", tls13_sig_data_server, transcript_hash); | |
1940 | } | |
84d67ead | 1941 | } |
1b593e1d | 1942 | if (!key->verify(key, params->scheme, params->params, data, sig)) |
dbb7c030 | 1943 | { |
1b593e1d TB |
1944 | DBG1(DBG_TLS, "signature verification with %N failed", |
1945 | tls_signature_scheme_names, scheme); | |
dbb7c030 MW |
1946 | return FALSE; |
1947 | } | |
1b593e1d TB |
1948 | DBG2(DBG_TLS, "verified signature with %N", |
1949 | tls_signature_scheme_names, scheme); | |
84d67ead MW |
1950 | } |
1951 | else | |
1952 | { | |
400df4ca | 1953 | chunk_t sig, hash; |
d29a82a9 | 1954 | bool done; |
84d67ead | 1955 | |
400df4ca MW |
1956 | if (!reader->read_data16(reader, &sig)) |
1957 | { | |
d29a82a9 | 1958 | DBG1(DBG_TLS, "received invalid signature"); |
400df4ca MW |
1959 | return FALSE; |
1960 | } | |
dbb7c030 | 1961 | switch (key->get_type(key)) |
84d67ead | 1962 | { |
dbb7c030 | 1963 | case KEY_RSA: |
d29a82a9 | 1964 | if (!hash_data(this, data, &hash)) |
dbb7c030 MW |
1965 | { |
1966 | return FALSE; | |
1967 | } | |
a413571f TB |
1968 | done = key->verify(key, SIGN_RSA_EMSA_PKCS1_NULL, NULL, hash, |
1969 | sig); | |
d29a82a9 MW |
1970 | free(hash.ptr); |
1971 | if (!done) | |
dbb7c030 | 1972 | { |
dbb7c030 MW |
1973 | return FALSE; |
1974 | } | |
d29a82a9 | 1975 | DBG2(DBG_TLS, "verified signature data with MD5+SHA1/RSA"); |
dbb7c030 MW |
1976 | break; |
1977 | case KEY_ECDSA: | |
a413571f TB |
1978 | if (!key->verify(key, SIGN_ECDSA_WITH_SHA1_DER, NULL, data, |
1979 | sig)) | |
dbb7c030 | 1980 | { |
dbb7c030 MW |
1981 | return FALSE; |
1982 | } | |
d29a82a9 | 1983 | DBG2(DBG_TLS, "verified signature with SHA1/ECDSA"); |
dbb7c030 | 1984 | break; |
34f66ce6 PK |
1985 | case KEY_ED25519: |
1986 | if (!key->verify(key, SIGN_ED25519, NULL, data, sig)) | |
1987 | { | |
1988 | return FALSE; | |
1989 | } | |
1990 | DBG2(DBG_TLS, "verified signature with Ed25519"); | |
1991 | break; | |
1992 | case KEY_ED448: | |
1993 | if (!key->verify(key, SIGN_ED448, NULL, data, sig)) | |
1994 | { | |
1995 | return FALSE; | |
1996 | } | |
1997 | DBG2(DBG_TLS, "verified signature with Ed448"); | |
1998 | break; | |
dbb7c030 MW |
1999 | default: |
2000 | return FALSE; | |
84d67ead | 2001 | } |
84d67ead MW |
2002 | } |
2003 | return TRUE; | |
2004 | } | |
2005 | ||
d29a82a9 | 2006 | METHOD(tls_crypto_t, sign_handshake, bool, |
7e432eff | 2007 | private_tls_crypto_t *this, private_key_t *key, bio_writer_t *writer, |
d29a82a9 MW |
2008 | chunk_t hashsig) |
2009 | { | |
2010 | return sign(this, key, writer, this->handshake, hashsig); | |
2011 | } | |
2012 | ||
2013 | METHOD(tls_crypto_t, verify_handshake, bool, | |
7e432eff | 2014 | private_tls_crypto_t *this, public_key_t *key, bio_reader_t *reader) |
d29a82a9 MW |
2015 | { |
2016 | return verify(this, key, reader, this->handshake); | |
2017 | } | |
2018 | ||
2e1c0a27 | 2019 | METHOD(tls_crypto_t, calculate_finished_legacy, bool, |
84d67ead MW |
2020 | private_tls_crypto_t *this, char *label, char out[12]) |
2021 | { | |
2022 | chunk_t seed; | |
2023 | ||
2024 | if (!this->prf) | |
2025 | { | |
2026 | return FALSE; | |
2027 | } | |
d29a82a9 | 2028 | if (!hash_data(this, this->handshake, &seed)) |
84d67ead MW |
2029 | { |
2030 | return FALSE; | |
2031 | } | |
97b30b93 MW |
2032 | if (!this->prf->get_bytes(this->prf, label, seed, 12, out)) |
2033 | { | |
2034 | free(seed.ptr); | |
2035 | return FALSE; | |
2036 | } | |
84d67ead MW |
2037 | free(seed.ptr); |
2038 | return TRUE; | |
2039 | } | |
2040 | ||
2e1c0a27 | 2041 | METHOD(tls_crypto_t, calculate_finished, bool, |
328d7af6 | 2042 | private_tls_crypto_t *this, bool server, chunk_t *out) |
7a2b0266 | 2043 | { |
2044 | chunk_t finished_key, finished_hash; | |
7a2b0266 | 2045 | |
f116a482 | 2046 | if (!this->hkdf) |
7a2b0266 | 2047 | { |
f116a482 | 2048 | return FALSE; |
7a2b0266 | 2049 | } |
f116a482 | 2050 | if (!hash_data(this, this->handshake, &finished_hash)) |
7a2b0266 | 2051 | { |
f116a482 TB |
2052 | DBG1(DBG_TLS, "creating hash of handshake failed"); |
2053 | return FALSE; | |
7a2b0266 | 2054 | } |
328d7af6 | 2055 | if (!this->hkdf->derive_finished(this->hkdf, server, &finished_key)) |
7a2b0266 | 2056 | { |
f116a482 TB |
2057 | DBG1(DBG_TLS, "generating finished key failed"); |
2058 | chunk_clear(&finished_hash); | |
2059 | return FALSE; | |
7a2b0266 | 2060 | } |
f116a482 | 2061 | if (!this->hkdf->allocate_bytes(this->hkdf, finished_key, finished_hash, out)) |
7a2b0266 | 2062 | { |
f116a482 | 2063 | DBG1(DBG_TLS, "generating finished HMAC failed"); |
7a2b0266 | 2064 | chunk_clear(&finished_key); |
2065 | chunk_clear(&finished_hash); | |
7a2b0266 | 2066 | return FALSE; |
2067 | } | |
7a2b0266 | 2068 | chunk_clear(&finished_key); |
2069 | chunk_clear(&finished_hash); | |
7a2b0266 | 2070 | return TRUE; |
2071 | } | |
2072 | ||
6a5c86b7 MW |
2073 | /** |
2074 | * Derive master secret from premaster, optionally save session | |
2075 | */ | |
97b30b93 | 2076 | static bool derive_master(private_tls_crypto_t *this, chunk_t premaster, |
6a5c86b7 MW |
2077 | chunk_t session, identification_t *id, |
2078 | chunk_t client_random, chunk_t server_random) | |
18010de2 | 2079 | { |
84543e6e | 2080 | char master[48]; |
6a5c86b7 | 2081 | chunk_t seed; |
84543e6e MW |
2082 | |
2083 | /* derive master secret */ | |
2084 | seed = chunk_cata("cc", client_random, server_random); | |
e7d98b8c MW |
2085 | |
2086 | if (!this->prf->set_key(this->prf, premaster) || | |
2087 | !this->prf->get_bytes(this->prf, "master secret", seed, | |
2088 | sizeof(master), master) || | |
2089 | !this->prf->set_key(this->prf, chunk_from_thing(master))) | |
97b30b93 MW |
2090 | { |
2091 | return FALSE; | |
2092 | } | |
97b30b93 | 2093 | |
6a5c86b7 MW |
2094 | if (this->cache && session.len) |
2095 | { | |
2096 | this->cache->create(this->cache, session, id, chunk_from_thing(master), | |
2097 | this->suite); | |
2098 | } | |
2099 | memwipe(master, sizeof(master)); | |
97b30b93 | 2100 | return TRUE; |
6a5c86b7 MW |
2101 | } |
2102 | ||
2103 | /** | |
2104 | * Expand key material from master secret | |
2105 | */ | |
9020f7d0 | 2106 | static bool expand_keys(private_tls_crypto_t *this, |
6a5c86b7 MW |
2107 | chunk_t client_random, chunk_t server_random) |
2108 | { | |
d3204677 MW |
2109 | chunk_t seed, block; |
2110 | chunk_t cw_mac, cw, cw_iv; | |
2111 | chunk_t sw_mac, sw, sw_iv; | |
2112 | int mklen, eklen, ivlen; | |
84543e6e | 2113 | |
d3204677 | 2114 | if (!this->aead_in || !this->aead_out) |
18010de2 | 2115 | { |
d3204677 | 2116 | return FALSE; |
84543e6e | 2117 | } |
d3204677 MW |
2118 | |
2119 | /* derive key block for key expansion */ | |
2120 | mklen = this->aead_in->get_mac_key_size(this->aead_in); | |
2121 | eklen = this->aead_in->get_encr_key_size(this->aead_in); | |
2122 | ivlen = this->aead_in->get_iv_size(this->aead_in); | |
84543e6e | 2123 | seed = chunk_cata("cc", server_random, client_random); |
d3204677 | 2124 | block = chunk_alloca((mklen + eklen + ivlen) * 2); |
97b30b93 MW |
2125 | if (!this->prf->get_bytes(this->prf, "key expansion", seed, |
2126 | block.len, block.ptr)) | |
2127 | { | |
2128 | return FALSE; | |
2129 | } | |
84543e6e | 2130 | |
d3204677 MW |
2131 | /* client/server write signer keys */ |
2132 | cw_mac = chunk_create(block.ptr, mklen); | |
2133 | block = chunk_skip(block, mklen); | |
2134 | sw_mac = chunk_create(block.ptr, mklen); | |
2135 | block = chunk_skip(block, mklen); | |
2136 | ||
2137 | /* client/server write encryption keys */ | |
2138 | cw = chunk_create(block.ptr, eklen); | |
2139 | block = chunk_skip(block, eklen); | |
2140 | sw = chunk_create(block.ptr, eklen); | |
2141 | block = chunk_skip(block, eklen); | |
2142 | ||
2143 | /* client/server write IV; TLS 1.0 implicit IVs or AEAD salt, if any */ | |
2144 | cw_iv = chunk_create(block.ptr, ivlen); | |
2145 | block = chunk_skip(block, ivlen); | |
2146 | sw_iv = chunk_create(block.ptr, ivlen); | |
2147 | block = chunk_skip(block, ivlen); | |
2148 | ||
84543e6e MW |
2149 | if (this->tls->is_server(this->tls)) |
2150 | { | |
d3204677 MW |
2151 | if (!this->aead_in->set_keys(this->aead_in, cw_mac, cw, cw_iv) || |
2152 | !this->aead_out->set_keys(this->aead_out, sw_mac, sw, sw_iv)) | |
2d56575d MW |
2153 | { |
2154 | return FALSE; | |
2155 | } | |
84543e6e MW |
2156 | } |
2157 | else | |
2158 | { | |
d3204677 MW |
2159 | if (!this->aead_out->set_keys(this->aead_out, cw_mac, cw, cw_iv) || |
2160 | !this->aead_in->set_keys(this->aead_in, sw_mac, sw, sw_iv)) | |
2d56575d MW |
2161 | { |
2162 | return FALSE; | |
2163 | } | |
84543e6e MW |
2164 | } |
2165 | ||
6a5c86b7 MW |
2166 | /* EAP-MSK */ |
2167 | if (this->msk_label) | |
2168 | { | |
06c15036 | 2169 | seed = chunk_cata("cc", client_random, server_random); |
6a5c86b7 | 2170 | this->msk = chunk_alloc(64); |
97b30b93 MW |
2171 | if (!this->prf->get_bytes(this->prf, this->msk_label, seed, |
2172 | this->msk.len, this->msk.ptr)) | |
2173 | { | |
2174 | return FALSE; | |
2175 | } | |
6a5c86b7 | 2176 | } |
9020f7d0 | 2177 | return TRUE; |
6a5c86b7 MW |
2178 | } |
2179 | ||
9020f7d0 | 2180 | METHOD(tls_crypto_t, derive_secrets, bool, |
6a5c86b7 MW |
2181 | private_tls_crypto_t *this, chunk_t premaster, chunk_t session, |
2182 | identification_t *id, chunk_t client_random, chunk_t server_random) | |
2183 | { | |
97b30b93 MW |
2184 | return derive_master(this, premaster, session, id, |
2185 | client_random, server_random) && | |
2186 | expand_keys(this, client_random, server_random); | |
6a5c86b7 MW |
2187 | } |
2188 | ||
2921f437 | 2189 | /** |
1466d4da | 2190 | * Derive and configure the client/server key/IV on an AEAD using a given label. |
2921f437 | 2191 | */ |
1466d4da TB |
2192 | static bool derive_labeled_key(private_tls_crypto_t *this, bool server, |
2193 | tls_hkdf_label_t label, tls_aead_t *aead) | |
7a2b0266 | 2194 | { |
1466d4da | 2195 | chunk_t key = chunk_empty, iv = chunk_empty; |
2921f437 | 2196 | bool success = FALSE; |
7a2b0266 | 2197 | |
1466d4da | 2198 | if (!this->hkdf->generate_secret(this->hkdf, label, this->handshake, |
2921f437 | 2199 | NULL) || |
1466d4da TB |
2200 | !this->hkdf->derive_key(this->hkdf, server, |
2201 | aead->get_encr_key_size(aead), &key) || | |
2202 | !this->hkdf->derive_iv(this->hkdf, server, | |
2203 | aead->get_iv_size(aead), &iv)) | |
2204 | { | |
2205 | DBG1(DBG_TLS, "deriving key material failed"); | |
2921f437 | 2206 | goto out; |
7a2b0266 | 2207 | } |
2208 | ||
1466d4da | 2209 | if (!aead->set_keys(aead, chunk_empty, key, iv)) |
7a2b0266 | 2210 | { |
2921f437 TB |
2211 | DBG1(DBG_TLS, "setting AEAD key material failed"); |
2212 | goto out; | |
7a2b0266 | 2213 | } |
2921f437 | 2214 | success = TRUE; |
7a2b0266 | 2215 | |
2921f437 | 2216 | out: |
1466d4da TB |
2217 | chunk_clear(&key); |
2218 | chunk_clear(&iv); | |
2921f437 | 2219 | return success; |
7a2b0266 | 2220 | } |
2221 | ||
1466d4da TB |
2222 | /** |
2223 | * Derive and configure the keys/IVs using the given labels. | |
2224 | */ | |
2225 | static bool derive_labeled_keys(private_tls_crypto_t *this, | |
2226 | tls_hkdf_label_t client_label, | |
2227 | tls_hkdf_label_t server_label) | |
2228 | { | |
6b23543a PK |
2229 | tls_aead_t *aead_c, *aead_s; |
2230 | suite_algs_t *algs; | |
1466d4da | 2231 | |
6b23543a PK |
2232 | algs = find_suite(this->suite); |
2233 | destroy_aeads(this); | |
2234 | if (!create_aead(this, algs)) | |
2235 | { | |
2236 | return FALSE; | |
2237 | } | |
2238 | aead_c = this->aead_out; | |
2239 | aead_s = this->aead_in; | |
1466d4da TB |
2240 | if (this->tls->is_server(this->tls)) |
2241 | { | |
2242 | aead_c = this->aead_in; | |
2243 | aead_s = this->aead_out; | |
2244 | } | |
2245 | return derive_labeled_key(this, FALSE, client_label, aead_c) && | |
2246 | derive_labeled_key(this, TRUE, server_label, aead_s); | |
2247 | } | |
2248 | ||
2921f437 TB |
2249 | METHOD(tls_crypto_t, derive_handshake_keys, bool, |
2250 | private_tls_crypto_t *this, chunk_t shared_secret) | |
7a2b0266 | 2251 | { |
2921f437 TB |
2252 | this->hkdf->set_shared_secret(this->hkdf, shared_secret); |
2253 | return derive_labeled_keys(this, TLS_HKDF_C_HS_TRAFFIC, | |
2254 | TLS_HKDF_S_HS_TRAFFIC); | |
2255 | } | |
7a2b0266 | 2256 | |
2921f437 TB |
2257 | METHOD(tls_crypto_t, derive_app_keys, bool, |
2258 | private_tls_crypto_t *this) | |
2259 | { | |
121ac4b9 TB |
2260 | if (!derive_labeled_keys(this, TLS_HKDF_C_AP_TRAFFIC, |
2261 | TLS_HKDF_S_AP_TRAFFIC)) | |
2262 | { | |
2263 | return FALSE; | |
2264 | } | |
2265 | ||
2266 | /* EAP-MSK */ | |
2267 | if (this->msk_label) | |
2268 | { | |
2269 | /* because the length is encoded when expanding key material, we | |
2270 | * request the same number of bytes as FreeRADIUS (the first 64 for | |
2271 | * the MSK, the next for the EMSK, which we just ignore) */ | |
2272 | if (!this->hkdf->export(this->hkdf, this->msk_label, chunk_empty, | |
2273 | this->handshake, 128, &this->msk)) | |
2274 | { | |
2275 | return FALSE; | |
2276 | } | |
2277 | this->msk.len = 64; | |
2278 | } | |
2279 | return TRUE; | |
7a2b0266 | 2280 | } |
2281 | ||
1466d4da TB |
2282 | METHOD(tls_crypto_t, update_app_keys, bool, |
2283 | private_tls_crypto_t *this, bool inbound) | |
2284 | { | |
6b23543a | 2285 | suite_algs_t *algs; |
1466d4da TB |
2286 | tls_hkdf_label_t label = TLS_HKDF_UPD_C_TRAFFIC; |
2287 | ||
6b23543a PK |
2288 | algs = find_suite(this->suite); |
2289 | destroy_aeads(this); | |
2290 | if (!create_aead(this, algs)) | |
2291 | { | |
2292 | return FALSE; | |
2293 | } | |
1466d4da TB |
2294 | if (this->tls->is_server(this->tls) != inbound) |
2295 | { | |
2296 | label = TLS_HKDF_UPD_S_TRAFFIC; | |
2297 | } | |
2298 | return derive_labeled_key(this, label == TLS_HKDF_UPD_S_TRAFFIC, label, | |
2299 | inbound ? this->aead_in : this->aead_out); | |
2300 | } | |
2301 | ||
6a5c86b7 MW |
2302 | METHOD(tls_crypto_t, resume_session, tls_cipher_suite_t, |
2303 | private_tls_crypto_t *this, chunk_t session, identification_t *id, | |
2304 | chunk_t client_random, chunk_t server_random) | |
2305 | { | |
2306 | chunk_t master; | |
2307 | ||
2308 | if (this->cache && session.len) | |
2309 | { | |
2310 | this->suite = this->cache->lookup(this->cache, session, id, &master); | |
2311 | if (this->suite) | |
2312 | { | |
ae10ee6d | 2313 | this->suite = select_cipher_suite(this, &this->suite, 1, KEY_ANY); |
6a5c86b7 MW |
2314 | if (this->suite) |
2315 | { | |
e7d98b8c MW |
2316 | if (!this->prf->set_key(this->prf, master) || |
2317 | !expand_keys(this, client_random, server_random)) | |
9020f7d0 MW |
2318 | { |
2319 | this->suite = 0; | |
2320 | } | |
6a5c86b7 MW |
2321 | } |
2322 | chunk_clear(&master); | |
2323 | } | |
ae10ee6d | 2324 | return this->suite; |
6a5c86b7 | 2325 | } |
ae10ee6d | 2326 | return 0; |
6a5c86b7 MW |
2327 | } |
2328 | ||
2329 | METHOD(tls_crypto_t, get_session, chunk_t, | |
2330 | private_tls_crypto_t *this, identification_t *server) | |
2331 | { | |
2332 | if (this->cache) | |
2333 | { | |
2334 | return this->cache->check(this->cache, server); | |
2335 | } | |
2336 | return chunk_empty; | |
84543e6e | 2337 | } |
18010de2 | 2338 | |
84543e6e MW |
2339 | METHOD(tls_crypto_t, change_cipher, void, |
2340 | private_tls_crypto_t *this, bool inbound) | |
2341 | { | |
dc9f34be | 2342 | if (this->protection) |
84543e6e | 2343 | { |
dc9f34be MW |
2344 | if (inbound) |
2345 | { | |
d3204677 | 2346 | this->protection->set_cipher(this->protection, TRUE, this->aead_in); |
6b23543a | 2347 | this->aead_in = NULL; |
dc9f34be MW |
2348 | } |
2349 | else | |
2350 | { | |
d3204677 | 2351 | this->protection->set_cipher(this->protection, FALSE, this->aead_out); |
6b23543a | 2352 | this->aead_out = NULL; |
dc9f34be | 2353 | } |
18010de2 | 2354 | } |
536dbc00 MW |
2355 | } |
2356 | ||
51313a39 MW |
2357 | METHOD(tls_crypto_t, get_eap_msk, chunk_t, |
2358 | private_tls_crypto_t *this) | |
2359 | { | |
2360 | return this->msk; | |
2361 | } | |
2362 | ||
536dbc00 MW |
2363 | METHOD(tls_crypto_t, destroy, void, |
2364 | private_tls_crypto_t *this) | |
2365 | { | |
d3204677 | 2366 | destroy_aeads(this); |
84d67ead | 2367 | free(this->handshake.ptr); |
51313a39 | 2368 | free(this->msk.ptr); |
18010de2 | 2369 | DESTROY_IF(this->prf); |
7a2b0266 | 2370 | DESTROY_IF(this->hkdf); |
84543e6e | 2371 | free(this->suites); |
536dbc00 MW |
2372 | free(this); |
2373 | } | |
2374 | ||
2375 | /** | |
2376 | * See header | |
2377 | */ | |
6a5c86b7 | 2378 | tls_crypto_t *tls_crypto_create(tls_t *tls, tls_cache_t *cache) |
536dbc00 MW |
2379 | { |
2380 | private_tls_crypto_t *this; | |
4254257f MW |
2381 | enumerator_t *enumerator; |
2382 | credential_type_t type; | |
2383 | int subtype; | |
536dbc00 MW |
2384 | |
2385 | INIT(this, | |
2386 | .public = { | |
2387 | .get_cipher_suites = _get_cipher_suites, | |
18010de2 | 2388 | .select_cipher_suite = _select_cipher_suite, |
35d9c15d | 2389 | .get_dh_group = _get_dh_group, |
d29a82a9 | 2390 | .get_signature_algorithms = _get_signature_algorithms, |
3f7bb88b | 2391 | .create_ec_enumerator = _create_ec_enumerator, |
dc9f34be | 2392 | .set_protection = _set_protection, |
84d67ead | 2393 | .append_handshake = _append_handshake, |
2271d67f | 2394 | .hash_handshake = _hash_handshake, |
d29a82a9 MW |
2395 | .sign = _sign, |
2396 | .verify = _verify, | |
84d67ead | 2397 | .sign_handshake = _sign_handshake, |
400df4ca | 2398 | .verify_handshake = _verify_handshake, |
2e1c0a27 | 2399 | .calculate_finished_legacy = _calculate_finished_legacy, |
84d67ead MW |
2400 | .calculate_finished = _calculate_finished, |
2401 | .derive_secrets = _derive_secrets, | |
2921f437 TB |
2402 | .derive_handshake_keys = _derive_handshake_keys, |
2403 | .derive_app_keys = _derive_app_keys, | |
1466d4da | 2404 | .update_app_keys = _update_app_keys, |
6a5c86b7 MW |
2405 | .resume_session = _resume_session, |
2406 | .get_session = _get_session, | |
84543e6e | 2407 | .change_cipher = _change_cipher, |
51313a39 | 2408 | .get_eap_msk = _get_eap_msk, |
536dbc00 MW |
2409 | .destroy = _destroy, |
2410 | }, | |
18010de2 | 2411 | .tls = tls, |
6a5c86b7 | 2412 | .cache = cache, |
536dbc00 MW |
2413 | ); |
2414 | ||
34f66ce6 PK |
2415 | /* FIXME: EDDSA keys are currently treated like ECDSA keys. A cleaner |
2416 | * separation would be welcome. */ | |
4254257f MW |
2417 | enumerator = lib->creds->create_builder_enumerator(lib->creds); |
2418 | while (enumerator->enumerate(enumerator, &type, &subtype)) | |
2419 | { | |
2420 | if (type == CRED_PUBLIC_KEY) | |
2421 | { | |
2422 | switch (subtype) | |
2423 | { | |
2424 | case KEY_RSA: | |
2425 | this->rsa = TRUE; | |
2426 | break; | |
2427 | case KEY_ECDSA: | |
34f66ce6 PK |
2428 | case KEY_ED25519: |
2429 | case KEY_ED448: | |
4254257f MW |
2430 | this->ecdsa = TRUE; |
2431 | break; | |
2432 | default: | |
2433 | break; | |
2434 | } | |
2435 | } | |
2436 | } | |
2437 | enumerator->destroy(enumerator); | |
2438 | ||
96b2fbcc MW |
2439 | switch (tls->get_purpose(tls)) |
2440 | { | |
2441 | case TLS_PURPOSE_EAP_TLS: | |
2442 | /* MSK PRF ASCII constant label according to EAP-TLS RFC 5216 */ | |
2443 | this->msk_label = "client EAP encryption"; | |
1407a002 | 2444 | break; |
ab2c989c MW |
2445 | case TLS_PURPOSE_EAP_PEAP: |
2446 | this->msk_label = "client EAP encryption"; | |
96b2fbcc MW |
2447 | break; |
2448 | case TLS_PURPOSE_EAP_TTLS: | |
2449 | /* MSK PRF ASCII constant label according to EAP-TTLS RFC 5281 */ | |
2450 | this->msk_label = "ttls keying material"; | |
ddf52220 | 2451 | break; |
99b0f633 AS |
2452 | default: |
2453 | break; | |
96b2fbcc | 2454 | } |
536dbc00 MW |
2455 | return &this->public; |
2456 | } | |
ac5717c9 MW |
2457 | |
2458 | /** | |
2459 | * See header. | |
2460 | */ | |
281766c5 TB |
2461 | int tls_crypto_get_supported_suites(bool null, tls_version_t version, |
2462 | tls_cipher_suite_t **out) | |
ac5717c9 MW |
2463 | { |
2464 | suite_algs_t suites[countof(suite_algs)]; | |
281766c5 | 2465 | int count = 0, i; |
ac5717c9 MW |
2466 | |
2467 | /* initialize copy of suite list */ | |
281766c5 | 2468 | for (i = 0; i < countof(suite_algs); i++) |
ac5717c9 | 2469 | { |
281766c5 TB |
2470 | if (suite_algs[i].min_version <= version && |
2471 | suite_algs[i].max_version >= version) | |
2472 | { | |
2473 | suites[count++] = suite_algs[i]; | |
2474 | } | |
ac5717c9 MW |
2475 | } |
2476 | ||
2477 | filter_unsupported_suites(suites, &count); | |
2478 | ||
2479 | if (!null) | |
2480 | { | |
2481 | filter_null_suites(suites, &count); | |
2482 | } | |
2483 | ||
2484 | if (out) | |
2485 | { | |
2486 | *out = calloc(count, sizeof(tls_cipher_suite_t)); | |
2487 | for (i = 0; i < count; i++) | |
2488 | { | |
2489 | (*out)[i] = suites[i].suite; | |
2490 | } | |
2491 | } | |
2492 | return count; | |
2493 | } | |
066ac880 | 2494 | |
e53bee9d PK |
2495 | /** |
2496 | * See header. | |
2497 | */ | |
2498 | int tls_crypto_get_supported_groups(diffie_hellman_group_t **out) | |
2499 | { | |
2500 | enumerator_t *enumerator; | |
2501 | diffie_hellman_group_t groups[countof(curves)]; | |
2502 | diffie_hellman_group_t group; | |
2503 | tls_named_group_t curve; | |
2504 | int count = 0, i; | |
2505 | ||
2506 | enumerator = enumerator_create_filter( | |
2507 | lib->crypto->create_dh_enumerator(lib->crypto), | |
2508 | group_filter, NULL, NULL); | |
2509 | ||
2510 | while (enumerator->enumerate(enumerator, &group, &curve)) | |
2511 | { | |
2512 | groups[count++] = group; | |
2513 | } | |
2514 | enumerator->destroy(enumerator); | |
2515 | ||
2516 | if (out) | |
2517 | { | |
2518 | *out = calloc(count, sizeof(diffie_hellman_group_t)); | |
2519 | for (i = 0; i < count; i++) | |
2520 | { | |
2521 | (*out)[i] = groups[i]; | |
2522 | } | |
2523 | } | |
2524 | return count; | |
2525 | } | |
2526 | ||
e3757300 PK |
2527 | /** |
2528 | * See header. | |
2529 | */ | |
2530 | int tls_crypto_get_supported_signatures(tls_version_t version, | |
2531 | tls_signature_scheme_t **out) | |
2532 | { | |
2533 | scheme_algs_t sigs[countof(schemes)]; | |
2534 | int count = 0, i; | |
2535 | ||
2536 | /* initialize copy of signature scheme list */ | |
2537 | for (i = 0; i < countof(schemes); i++) | |
2538 | { | |
2539 | /* only RSA_PSS_RSAE schemes supported for signing and verifying */ | |
2540 | if (schemes[i].sig == TLS_SIG_RSA_PSS_PSS_SHA256 || | |
2541 | schemes[i].sig == TLS_SIG_RSA_PSS_PSS_SHA384 || | |
2542 | schemes[i].sig == TLS_SIG_RSA_PSS_PSS_SHA512) | |
2543 | { | |
2544 | continue; | |
2545 | } | |
2546 | if (schemes[i].min_version <= version && | |
2547 | schemes[i].max_version >= version && | |
2548 | lib->plugins->has_feature(lib->plugins, | |
2549 | PLUGIN_PROVIDE(PUBKEY_VERIFY, schemes[i].params.scheme))) | |
2550 | { | |
2551 | sigs[count++] = schemes[i]; | |
2552 | } | |
2553 | } | |
2554 | ||
2555 | if (out) | |
2556 | { | |
2557 | *out = calloc(count, sizeof(tls_signature_scheme_t)); | |
2558 | for (i = 0; i < count; i++) | |
2559 | { | |
2560 | (*out)[i] = sigs[i].sig; | |
2561 | } | |
2562 | } | |
2563 | return count; | |
2564 | } | |
2565 | ||
066ac880 PK |
2566 | /** |
2567 | * See header. | |
2568 | */ | |
2569 | tls_named_group_t tls_ec_group_to_curve(diffie_hellman_group_t group) | |
2570 | { | |
2571 | int i; | |
2572 | ||
2573 | for (i = 0; i < countof(curves); i++) | |
2574 | { | |
2575 | if (curves[i].group == group) | |
2576 | { | |
2577 | return curves[i].curve; | |
2578 | } | |
2579 | } | |
2580 | return 0; | |
2581 | } | |
9803fb82 PK |
2582 | |
2583 | /** | |
2584 | * See header. | |
2585 | */ | |
2586 | key_type_t tls_signature_scheme_to_key_type(tls_signature_scheme_t sig) | |
2587 | { | |
2588 | int i; | |
2589 | ||
2590 | for (i = 0; i < countof(schemes); i++) | |
2591 | { | |
2592 | if (schemes[i].sig == sig) | |
2593 | { | |
2594 | return key_type_from_signature_scheme(schemes[i].params.scheme); | |
2595 | } | |
2596 | } | |
2597 | return 0; | |
2598 | } | |
2599 | ||
2600 | /** | |
2601 | * Hashtable hash function | |
2602 | */ | |
2603 | static u_int hash_key_type(key_type_t *type) | |
2604 | { | |
2605 | return chunk_hash(chunk_from_thing(*type)); | |
2606 | } | |
2607 | ||
2608 | /** | |
2609 | * Hashtable equals function | |
2610 | */ | |
2611 | static bool equals_key_type(key_type_t *key1, key_type_t *key2) | |
2612 | { | |
2613 | return *key1 == *key2; | |
2614 | } | |
2615 | ||
2616 | CALLBACK(filter_key_types, bool, | |
2617 | void *data, enumerator_t *orig, va_list args) | |
2618 | { | |
2619 | key_type_t *key_type, *out; | |
2620 | ||
2621 | VA_ARGS_VGET(args, out); | |
2622 | ||
2623 | if (orig->enumerate(orig, NULL, &key_type)) | |
2624 | { | |
2625 | *out = *key_type; | |
2626 | return TRUE; | |
2627 | } | |
2628 | return FALSE; | |
2629 | } | |
2630 | ||
2631 | CALLBACK(destroy_key_types, void, | |
2632 | hashtable_t *ht) | |
2633 | { | |
2634 | ht->destroy_function(ht, (void*)free); | |
2635 | } | |
2636 | ||
d8e42a3d PK |
2637 | /** |
2638 | * Create an enumerator over supported key types within a specific TLS range | |
9803fb82 | 2639 | */ |
d8e42a3d | 2640 | static enumerator_t *get_supported_key_types(tls_version_t min_version, |
9803fb82 PK |
2641 | tls_version_t max_version) |
2642 | { | |
2643 | hashtable_t *ht; | |
2644 | key_type_t *type, lookup; | |
2645 | int i; | |
2646 | ||
2647 | ht = hashtable_create((hashtable_hash_t)hash_key_type, | |
2648 | (hashtable_equals_t)equals_key_type, 4); | |
2649 | for (i = 0; i < countof(schemes); i++) | |
2650 | { | |
2651 | if (schemes[i].min_version <= max_version && | |
2652 | schemes[i].max_version >= min_version) | |
2653 | { | |
2654 | lookup = key_type_from_signature_scheme(schemes[i].params.scheme); | |
2655 | if (!ht->get(ht, &lookup)) | |
2656 | { | |
2657 | type = malloc_thing(key_type_t); | |
2658 | *type = lookup; | |
2659 | ht->put(ht, type, type); | |
2660 | } | |
2661 | } | |
2662 | } | |
2663 | return enumerator_create_filter(ht->create_enumerator(ht), | |
2664 | filter_key_types, ht, destroy_key_types); | |
2665 | } | |
d8e42a3d PK |
2666 | |
2667 | /** | |
2668 | * Create an array of an intersection of server and peer supported key types | |
2669 | */ | |
2670 | static array_t *create_common_key_types(enumerator_t *enumerator, chunk_t hashsig) | |
2671 | { | |
2672 | array_t *key_types; | |
2673 | key_type_t v, lookup; | |
2674 | uint16_t sig_scheme; | |
2675 | ||
2676 | key_types = array_create(sizeof(key_type_t), 8); | |
2677 | while (enumerator->enumerate(enumerator, &v)) | |
2678 | { | |
2679 | bio_reader_t *reader; | |
2680 | ||
2681 | reader = bio_reader_create(hashsig); | |
2682 | while (reader->remaining(reader) && | |
2683 | reader->read_uint16(reader, &sig_scheme)) | |
2684 | { | |
2685 | lookup = tls_signature_scheme_to_key_type(sig_scheme); | |
2686 | if (v == lookup) | |
2687 | { | |
2688 | array_insert(key_types, ARRAY_TAIL, &lookup); | |
2689 | break; | |
2690 | } | |
2691 | } | |
2692 | reader->destroy(reader); | |
2693 | } | |
2694 | return key_types; | |
2695 | } | |
2696 | ||
2697 | typedef struct { | |
2698 | enumerator_t public; | |
2699 | array_t *key_types; | |
2700 | identification_t *peer; | |
2701 | private_key_t *key; | |
2702 | auth_cfg_t *auth; | |
2703 | } private_key_enumerator_t; | |
2704 | ||
2705 | METHOD(enumerator_t, private_key_enumerate, bool, | |
2706 | private_key_enumerator_t *this, va_list args) | |
2707 | { | |
2708 | key_type_t type; | |
2709 | auth_cfg_t **auth_out; | |
2710 | private_key_t **key_out; | |
2711 | ||
2712 | VA_ARGS_VGET(args, key_out, auth_out); | |
2713 | ||
2714 | DESTROY_IF(this->key); | |
2715 | DESTROY_IF(this->auth); | |
2716 | this->auth = auth_cfg_create(); | |
2717 | ||
2718 | while (array_remove(this->key_types, ARRAY_HEAD, &type)) | |
2719 | { | |
2720 | this->key = lib->credmgr->get_private(lib->credmgr, type, this->peer, | |
2721 | this->auth); | |
2722 | if (this->key) | |
2723 | { | |
2724 | *key_out = this->key; | |
2725 | if (auth_out) | |
2726 | { | |
2727 | *auth_out = this->auth; | |
2728 | } | |
2729 | return TRUE; | |
2730 | } | |
2731 | } | |
2732 | return FALSE; | |
2733 | } | |
2734 | ||
2735 | METHOD(enumerator_t, private_key_destroy, void, | |
2736 | private_key_enumerator_t *this) | |
2737 | { | |
2738 | DESTROY_IF(this->key); | |
2739 | DESTROY_IF(this->auth); | |
2740 | array_destroy(this->key_types); | |
2741 | free(this); | |
2742 | } | |
2743 | ||
2744 | /** | |
2745 | * See header. | |
2746 | */ | |
2747 | enumerator_t *tls_create_private_key_enumerator(tls_version_t min_version, | |
2748 | tls_version_t max_version, | |
2749 | chunk_t hashsig, | |
2750 | identification_t *peer) | |
2751 | { | |
2752 | private_key_enumerator_t *enumerator; | |
2753 | enumerator_t *key_types; | |
2754 | ||
2755 | key_types = get_supported_key_types(min_version, max_version); | |
2756 | ||
2757 | INIT(enumerator, | |
2758 | .public = { | |
2759 | .enumerate = enumerator_enumerate_default, | |
2760 | .venumerate = _private_key_enumerate, | |
2761 | .destroy = _private_key_destroy, | |
2762 | }, | |
2763 | .key_types = create_common_key_types(key_types, hashsig), | |
2764 | .peer = peer, | |
2765 | ); | |
2766 | key_types->destroy(key_types); | |
2767 | ||
2768 | if (!array_count(enumerator->key_types)) | |
2769 | { | |
2770 | return NULL; | |
2771 | } | |
2772 | return &enumerator->public; | |
2773 | } |