/src/botan/src/lib/tls/tls_policy.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Policies for TLS |
3 | | * (C) 2004-2010,2012,2015,2016 Jack Lloyd |
4 | | * 2016 Christian Mainka |
5 | | * 2017 Harry Reimann, Rohde & Schwarz Cybersecurity |
6 | | * |
7 | | * Botan is released under the Simplified BSD License (see license.txt) |
8 | | */ |
9 | | |
10 | | #include <botan/tls_policy.h> |
11 | | #include <botan/tls_ciphersuite.h> |
12 | | #include <botan/tls_algos.h> |
13 | | #include <botan/tls_exceptn.h> |
14 | | #include <botan/internal/stl_util.h> |
15 | | #include <botan/pk_keys.h> |
16 | | #include <sstream> |
17 | | |
18 | | namespace Botan { |
19 | | |
20 | | namespace TLS { |
21 | | |
22 | | std::vector<Signature_Scheme> Policy::allowed_signature_schemes() const |
23 | 6.56k | { |
24 | 6.56k | std::vector<Signature_Scheme> schemes; |
25 | | |
26 | 6.56k | for(Signature_Scheme scheme : all_signature_schemes()) |
27 | 72.2k | { |
28 | 72.2k | if(signature_scheme_is_known(scheme) == false) |
29 | 0 | continue; |
30 | 72.2k | const bool sig_allowed = allowed_signature_method(signature_algorithm_of_scheme(scheme)); |
31 | 72.2k | const bool hash_allowed = allowed_signature_hash(hash_function_of_scheme(scheme)); |
32 | | |
33 | 72.2k | if(sig_allowed && hash_allowed) |
34 | 59.0k | { |
35 | 59.0k | schemes.push_back(scheme); |
36 | 59.0k | } |
37 | 72.2k | } |
38 | | |
39 | 6.56k | return schemes; |
40 | 6.56k | } |
41 | | |
42 | | std::vector<Signature_Scheme> Policy::acceptable_signature_schemes() const |
43 | 6.37k | { |
44 | 6.37k | return this->allowed_signature_schemes(); |
45 | 6.37k | } |
46 | | |
47 | | std::vector<std::string> Policy::allowed_ciphers() const |
48 | 0 | { |
49 | 0 | return { |
50 | | //"AES-256/OCB(12)", |
51 | 0 | "ChaCha20Poly1305", |
52 | 0 | "AES-256/GCM", |
53 | 0 | "AES-128/GCM", |
54 | | //"AES-256/CCM", |
55 | | //"AES-128/CCM", |
56 | | //"AES-256/CCM(8)", |
57 | | //"AES-128/CCM(8)", |
58 | | //"Camellia-256/GCM", |
59 | | //"Camellia-128/GCM", |
60 | | //"ARIA-256/GCM", |
61 | | //"ARIA-128/GCM", |
62 | | //"AES-256", |
63 | | //"AES-128", |
64 | | //"3DES", |
65 | 0 | }; |
66 | 0 | } |
67 | | |
68 | | std::vector<std::string> Policy::allowed_signature_hashes() const |
69 | 74.7k | { |
70 | 74.7k | return { |
71 | 74.7k | "SHA-512", |
72 | 74.7k | "SHA-384", |
73 | 74.7k | "SHA-256", |
74 | | //"SHA-1", |
75 | 74.7k | }; |
76 | 74.7k | } |
77 | | |
78 | | std::vector<std::string> Policy::allowed_macs() const |
79 | 0 | { |
80 | | /* |
81 | | SHA-256 is preferred because the Lucky13 countermeasure works |
82 | | somewhat better for SHA-256 vs SHA-384: |
83 | | https://github.com/randombit/botan/pull/675 |
84 | | */ |
85 | 0 | return { |
86 | 0 | "AEAD", |
87 | 0 | "SHA-256", |
88 | 0 | "SHA-384", |
89 | 0 | "SHA-1", |
90 | 0 | }; |
91 | 0 | } |
92 | | |
93 | | std::vector<std::string> Policy::allowed_key_exchange_methods() const |
94 | 0 | { |
95 | 0 | return { |
96 | | //"ECDHE_PSK", |
97 | | //"PSK", |
98 | 0 | "CECPQ1", |
99 | 0 | "ECDH", |
100 | 0 | "DH", |
101 | | //"RSA", |
102 | 0 | }; |
103 | 0 | } |
104 | | |
105 | | std::vector<std::string> Policy::allowed_signature_methods() const |
106 | 72.5k | { |
107 | 72.5k | return { |
108 | 72.5k | "ECDSA", |
109 | 72.5k | "RSA", |
110 | | //"DSA", |
111 | | //"IMPLICIT", |
112 | 72.5k | }; |
113 | 72.5k | } |
114 | | |
115 | | bool Policy::allowed_signature_method(const std::string& sig_method) const |
116 | 72.5k | { |
117 | 72.5k | return value_exists(allowed_signature_methods(), sig_method); |
118 | 72.5k | } |
119 | | |
120 | | bool Policy::allowed_signature_hash(const std::string& sig_hash) const |
121 | 74.7k | { |
122 | 74.7k | return value_exists(allowed_signature_hashes(), sig_hash); |
123 | 74.7k | } |
124 | | |
125 | | bool Policy::use_ecc_point_compression() const |
126 | 14.2k | { |
127 | 14.2k | return false; |
128 | 14.2k | } |
129 | | |
130 | | Group_Params Policy::choose_key_exchange_group(const std::vector<Group_Params>& peer_groups) const |
131 | 64.7k | { |
132 | 64.7k | if(peer_groups.empty()) |
133 | 551 | return Group_Params::NONE; |
134 | | |
135 | 64.1k | const std::vector<Group_Params> our_groups = key_exchange_groups(); |
136 | | |
137 | 64.1k | for(auto g : our_groups) |
138 | 344k | { |
139 | 344k | if(value_exists(peer_groups, g)) |
140 | 63.9k | return g; |
141 | 344k | } |
142 | | |
143 | 169 | return Group_Params::NONE; |
144 | 64.1k | } |
145 | | |
146 | | Group_Params Policy::default_dh_group() const |
147 | 0 | { |
148 | | /* |
149 | | * Return the first listed or just default to 2048 |
150 | | */ |
151 | 0 | for(auto g : key_exchange_groups()) |
152 | 0 | { |
153 | 0 | if(group_param_is_dh(g)) |
154 | 0 | return g; |
155 | 0 | } |
156 | |
|
157 | 0 | return Group_Params::FFDHE_2048; |
158 | 0 | } |
159 | | |
160 | | std::vector<Group_Params> Policy::key_exchange_groups() const |
161 | 70.5k | { |
162 | | // Default list is ordered by performance |
163 | 70.5k | return { |
164 | | |
165 | 70.5k | #if defined(BOTAN_HAS_CURVE_25519) |
166 | 70.5k | Group_Params::X25519, |
167 | 70.5k | #endif |
168 | | |
169 | 70.5k | Group_Params::SECP256R1, |
170 | 70.5k | Group_Params::BRAINPOOL256R1, |
171 | 70.5k | Group_Params::SECP384R1, |
172 | 70.5k | Group_Params::BRAINPOOL384R1, |
173 | 70.5k | Group_Params::SECP521R1, |
174 | 70.5k | Group_Params::BRAINPOOL512R1, |
175 | | |
176 | 70.5k | Group_Params::FFDHE_2048, |
177 | 70.5k | Group_Params::FFDHE_3072, |
178 | 70.5k | Group_Params::FFDHE_4096, |
179 | 70.5k | Group_Params::FFDHE_6144, |
180 | 70.5k | Group_Params::FFDHE_8192, |
181 | 70.5k | }; |
182 | 70.5k | } |
183 | | |
184 | | size_t Policy::minimum_dh_group_size() const |
185 | 0 | { |
186 | 0 | return 2048; |
187 | 0 | } |
188 | | |
189 | | size_t Policy::minimum_ecdsa_group_size() const |
190 | 278 | { |
191 | | // Here we are at the mercy of whatever the CA signed, but most certs should be 256 bit by now |
192 | 278 | return 256; |
193 | 278 | } |
194 | | |
195 | | size_t Policy::minimum_ecdh_group_size() const |
196 | 671 | { |
197 | | // x25519 is smallest curve currently supported for TLS key exchange |
198 | 671 | return 255; |
199 | 671 | } |
200 | | |
201 | | size_t Policy::minimum_signature_strength() const |
202 | 626 | { |
203 | 626 | return 110; |
204 | 626 | } |
205 | | |
206 | | bool Policy::require_cert_revocation_info() const |
207 | 626 | { |
208 | 626 | return true; |
209 | 626 | } |
210 | | |
211 | | size_t Policy::minimum_rsa_bits() const |
212 | 38 | { |
213 | | /* Default assumption is all end-entity certificates should |
214 | | be at least 2048 bits these days. |
215 | | |
216 | | If you are connecting to arbitrary servers on the Internet |
217 | | (ie as a web browser or SMTP client) you'll probably have to reduce this |
218 | | to 1024 bits, or perhaps even lower. |
219 | | */ |
220 | 38 | return 2048; |
221 | 38 | } |
222 | | |
223 | | void Policy::check_peer_key_acceptable(const Public_Key& public_key) const |
224 | 987 | { |
225 | 987 | const std::string algo_name = public_key.algo_name(); |
226 | | |
227 | 987 | const size_t keylength = public_key.key_length(); |
228 | 987 | size_t expected_keylength = 0; |
229 | | |
230 | 987 | if(algo_name == "RSA") |
231 | 38 | { |
232 | 38 | expected_keylength = minimum_rsa_bits(); |
233 | 38 | } |
234 | 949 | else if(algo_name == "DH") |
235 | 0 | { |
236 | 0 | expected_keylength = minimum_dh_group_size(); |
237 | 0 | } |
238 | 949 | else if(algo_name == "ECDH" || algo_name == "Curve25519") |
239 | 671 | { |
240 | 671 | expected_keylength = minimum_ecdh_group_size(); |
241 | 671 | } |
242 | 278 | else if(algo_name == "ECDSA") |
243 | 278 | { |
244 | 278 | expected_keylength = minimum_ecdsa_group_size(); |
245 | 278 | } |
246 | | // else some other algo, so leave expected_keylength as zero and the check is a no-op |
247 | | |
248 | 987 | if(keylength < expected_keylength) |
249 | 1 | throw TLS_Exception(Alert::INSUFFICIENT_SECURITY, |
250 | 1 | "Peer sent " + |
251 | 1 | std::to_string(keylength) + " bit " + algo_name + " key" |
252 | 1 | ", policy requires at least " + |
253 | 1 | std::to_string(expected_keylength)); |
254 | 987 | } |
255 | | |
256 | | uint32_t Policy::session_ticket_lifetime() const |
257 | 22.2k | { |
258 | 22.2k | return 86400; // ~1 day |
259 | 22.2k | } |
260 | | |
261 | | bool Policy::send_fallback_scsv(Protocol_Version version) const |
262 | 6.37k | { |
263 | 6.37k | return version != latest_supported_version(version.is_datagram_protocol()); |
264 | 6.37k | } |
265 | | |
266 | | bool Policy::acceptable_protocol_version(Protocol_Version version) const |
267 | 54.3k | { |
268 | 54.3k | if(version == Protocol_Version::TLS_V12 && allow_tls12()) |
269 | 39.7k | return true; |
270 | | |
271 | 14.5k | if(version == Protocol_Version::DTLS_V12 && allow_dtls12()) |
272 | 14.4k | return true; |
273 | | |
274 | 107 | #if defined(BOTAN_HAS_TLS_V10) |
275 | | |
276 | 107 | if(version == Protocol_Version::TLS_V11 && allow_tls11()) |
277 | 0 | return true; |
278 | 107 | if(version == Protocol_Version::TLS_V10 && allow_tls10()) |
279 | 0 | return true; |
280 | 107 | if(version == Protocol_Version::DTLS_V10 && allow_dtls10()) |
281 | 0 | return true; |
282 | | |
283 | 107 | #endif |
284 | | |
285 | 107 | return false; |
286 | 107 | } |
287 | | |
288 | | Protocol_Version Policy::latest_supported_version(bool datagram) const |
289 | 36.6k | { |
290 | 36.6k | if(datagram) |
291 | 7.99k | { |
292 | 7.99k | if(acceptable_protocol_version(Protocol_Version::DTLS_V12)) |
293 | 7.99k | return Protocol_Version::DTLS_V12; |
294 | 0 | #if defined(BOTAN_HAS_TLS_V10) |
295 | 0 | if(acceptable_protocol_version(Protocol_Version::DTLS_V10)) |
296 | 0 | return Protocol_Version::DTLS_V10; |
297 | 0 | #endif |
298 | 0 | throw Invalid_State("Policy forbids all available DTLS version"); |
299 | 0 | } |
300 | 28.6k | else |
301 | 28.6k | { |
302 | 28.6k | if(acceptable_protocol_version(Protocol_Version::TLS_V12)) |
303 | 28.6k | return Protocol_Version::TLS_V12; |
304 | 0 | #if defined(BOTAN_HAS_TLS_V10) |
305 | 0 | if(acceptable_protocol_version(Protocol_Version::TLS_V11)) |
306 | 0 | return Protocol_Version::TLS_V11; |
307 | 0 | if(acceptable_protocol_version(Protocol_Version::TLS_V10)) |
308 | 0 | return Protocol_Version::TLS_V10; |
309 | 0 | #endif |
310 | 0 | throw Invalid_State("Policy forbids all available TLS version"); |
311 | 0 | } |
312 | 36.6k | } |
313 | | |
314 | | bool Policy::acceptable_ciphersuite(const Ciphersuite& ciphersuite) const |
315 | 0 | { |
316 | 0 | return value_exists(allowed_ciphers(), ciphersuite.cipher_algo()) && |
317 | 0 | value_exists(allowed_macs(), ciphersuite.mac_algo()); |
318 | 0 | } |
319 | | |
320 | 0 | bool Policy::allow_client_initiated_renegotiation() const { return false; } |
321 | 0 | bool Policy::allow_server_initiated_renegotiation() const { return false; } |
322 | 31.0k | bool Policy::allow_insecure_renegotiation() const { return false; } |
323 | 6.39k | bool Policy::allow_tls10() const { return false; } |
324 | 6.39k | bool Policy::allow_tls11() const { return false; } |
325 | 46.1k | bool Policy::allow_tls12() const { return true; } |
326 | 19 | bool Policy::allow_dtls10() const { return false; } |
327 | 15.4k | bool Policy::allow_dtls12() const { return true; } |
328 | 50.0k | bool Policy::include_time_in_hello_random() const { return true; } |
329 | 0 | bool Policy::hide_unknown_users() const { return false; } |
330 | 22.2k | bool Policy::server_uses_own_ciphersuite_preferences() const { return true; } |
331 | 6.79k | bool Policy::negotiate_encrypt_then_mac() const { return true; } |
332 | 6.63k | bool Policy::support_cert_status_message() const { return true; } |
333 | 0 | bool Policy::allow_resumption_for_renegotiation() const { return true; } |
334 | 0 | bool Policy::only_resume_with_exact_version() const { return true; } |
335 | 21.6k | bool Policy::require_client_certificate_authentication() const { return false; } |
336 | 21.6k | bool Policy::request_client_certificate_authentication() const { return require_client_certificate_authentication(); } |
337 | 0 | bool Policy::abort_connection_on_undesired_renegotiation() const { return false; } |
338 | 722 | bool Policy::allow_dtls_epoch0_restart() const { return false; } |
339 | | |
340 | 3.39k | size_t Policy::maximum_certificate_chain_size() const { return 0; } |
341 | | |
342 | | // 1 second initial timeout, 60 second max - see RFC 6347 sec 4.2.4.1 |
343 | 650 | size_t Policy::dtls_initial_timeout() const { return 1*1000; } |
344 | 650 | size_t Policy::dtls_maximum_timeout() const { return 60*1000; } |
345 | | |
346 | | size_t Policy::dtls_default_mtu() const |
347 | 650 | { |
348 | | // default MTU is IPv6 min MTU minus UDP/IP headers |
349 | 650 | return 1280 - 40 - 8; |
350 | 650 | } |
351 | | |
352 | | std::vector<uint16_t> Policy::srtp_profiles() const |
353 | 0 | { |
354 | 0 | return std::vector<uint16_t>(); |
355 | 0 | } |
356 | | |
357 | | namespace { |
358 | | |
359 | | class Ciphersuite_Preference_Ordering final |
360 | | { |
361 | | public: |
362 | | Ciphersuite_Preference_Ordering(const std::vector<std::string>& ciphers, |
363 | | const std::vector<std::string>& macs, |
364 | | const std::vector<std::string>& kex, |
365 | | const std::vector<std::string>& sigs) : |
366 | 0 | m_ciphers(ciphers), m_macs(macs), m_kex(kex), m_sigs(sigs) {} |
367 | | |
368 | | bool operator()(const Ciphersuite& a, const Ciphersuite& b) const |
369 | 0 | { |
370 | 0 | if(a.kex_method() != b.kex_method()) |
371 | 0 | { |
372 | 0 | for(size_t i = 0; i != m_kex.size(); ++i) |
373 | 0 | { |
374 | 0 | if(a.kex_algo() == m_kex[i]) |
375 | 0 | return true; |
376 | 0 | if(b.kex_algo() == m_kex[i]) |
377 | 0 | return false; |
378 | 0 | } |
379 | 0 | } |
380 | |
|
381 | 0 | if(a.cipher_algo() != b.cipher_algo()) |
382 | 0 | { |
383 | 0 | for(size_t i = 0; i != m_ciphers.size(); ++i) |
384 | 0 | { |
385 | 0 | if(a.cipher_algo() == m_ciphers[i]) |
386 | 0 | return true; |
387 | 0 | if(b.cipher_algo() == m_ciphers[i]) |
388 | 0 | return false; |
389 | 0 | } |
390 | 0 | } |
391 | |
|
392 | 0 | if(a.cipher_keylen() != b.cipher_keylen()) |
393 | 0 | { |
394 | 0 | if(a.cipher_keylen() < b.cipher_keylen()) |
395 | 0 | return false; |
396 | 0 | if(a.cipher_keylen() > b.cipher_keylen()) |
397 | 0 | return true; |
398 | 0 | } |
399 | | |
400 | 0 | if(a.auth_method() != b.auth_method()) |
401 | 0 | { |
402 | 0 | for(size_t i = 0; i != m_sigs.size(); ++i) |
403 | 0 | { |
404 | 0 | if(a.sig_algo() == m_sigs[i]) |
405 | 0 | return true; |
406 | 0 | if(b.sig_algo() == m_sigs[i]) |
407 | 0 | return false; |
408 | 0 | } |
409 | 0 | } |
410 | |
|
411 | 0 | if(a.mac_algo() != b.mac_algo()) |
412 | 0 | { |
413 | 0 | for(size_t i = 0; i != m_macs.size(); ++i) |
414 | 0 | { |
415 | 0 | if(a.mac_algo() == m_macs[i]) |
416 | 0 | return true; |
417 | 0 | if(b.mac_algo() == m_macs[i]) |
418 | 0 | return false; |
419 | 0 | } |
420 | 0 | } |
421 | |
|
422 | 0 | return false; // equal (?!?) |
423 | 0 | } |
424 | | private: |
425 | | std::vector<std::string> m_ciphers, m_macs, m_kex, m_sigs; |
426 | | }; |
427 | | |
428 | | } |
429 | | |
430 | | std::vector<uint16_t> Policy::ciphersuite_list(Protocol_Version version) const |
431 | 0 | { |
432 | 0 | const std::vector<std::string> ciphers = allowed_ciphers(); |
433 | 0 | const std::vector<std::string> macs = allowed_macs(); |
434 | 0 | const std::vector<std::string> kex = allowed_key_exchange_methods(); |
435 | 0 | const std::vector<std::string> sigs = allowed_signature_methods(); |
436 | |
|
437 | 0 | std::vector<Ciphersuite> ciphersuites; |
438 | |
|
439 | 0 | for(auto&& suite : Ciphersuite::all_known_ciphersuites()) |
440 | 0 | { |
441 | | // Can we use it? |
442 | 0 | if(!suite.valid()) |
443 | 0 | continue; |
444 | | |
445 | | // Can we use it in this version? |
446 | 0 | if(!suite.usable_in_version(version)) |
447 | 0 | continue; |
448 | | |
449 | | // Is it acceptable to the policy? |
450 | 0 | if(!this->acceptable_ciphersuite(suite)) |
451 | 0 | continue; |
452 | | |
453 | 0 | if(!value_exists(kex, suite.kex_algo())) |
454 | 0 | continue; // unsupported key exchange |
455 | | |
456 | 0 | if(!value_exists(ciphers, suite.cipher_algo())) |
457 | 0 | continue; // unsupported cipher |
458 | | |
459 | 0 | if(!value_exists(macs, suite.mac_algo())) |
460 | 0 | continue; // unsupported MAC algo |
461 | | |
462 | 0 | if(!value_exists(sigs, suite.sig_algo())) |
463 | 0 | { |
464 | | // allow if it's an empty sig algo and we want to use PSK |
465 | 0 | if(suite.auth_method() != Auth_Method::IMPLICIT || !suite.psk_ciphersuite()) |
466 | 0 | continue; |
467 | 0 | } |
468 | | |
469 | | /* |
470 | | CECPQ1 always uses x25519 for ECDH, so treat the applications |
471 | | removal of x25519 from the ECC curve list as equivalent to |
472 | | saying they do not trust CECPQ1 |
473 | | */ |
474 | 0 | if(suite.kex_method() == Kex_Algo::CECPQ1) |
475 | 0 | { |
476 | 0 | if(value_exists(key_exchange_groups(), Group_Params::X25519) == false) |
477 | 0 | continue; |
478 | 0 | } |
479 | | |
480 | | // OK, consider it |
481 | 0 | ciphersuites.push_back(suite); |
482 | 0 | } |
483 | |
|
484 | 0 | if(ciphersuites.empty()) |
485 | 0 | { |
486 | 0 | throw Invalid_State("Policy does not allow any available cipher suite"); |
487 | 0 | } |
488 | | |
489 | 0 | Ciphersuite_Preference_Ordering order(ciphers, macs, kex, sigs); |
490 | 0 | std::sort(ciphersuites.begin(), ciphersuites.end(), order); |
491 | |
|
492 | 0 | std::vector<uint16_t> ciphersuite_codes; |
493 | 0 | for(auto i : ciphersuites) |
494 | 0 | ciphersuite_codes.push_back(i.ciphersuite_code()); |
495 | 0 | return ciphersuite_codes; |
496 | 0 | } |
497 | | |
498 | | namespace { |
499 | | |
500 | | void print_vec(std::ostream& o, |
501 | | const char* key, |
502 | | const std::vector<std::string>& v) |
503 | 0 | { |
504 | 0 | o << key << " = "; |
505 | 0 | for(size_t i = 0; i != v.size(); ++i) |
506 | 0 | { |
507 | 0 | o << v[i]; |
508 | 0 | if(i != v.size() - 1) |
509 | 0 | o << ' '; |
510 | 0 | } |
511 | 0 | o << '\n'; |
512 | 0 | } |
513 | | |
514 | | void print_vec(std::ostream& o, |
515 | | const char* key, |
516 | | const std::vector<Group_Params>& v) |
517 | 0 | { |
518 | 0 | o << key << " = "; |
519 | 0 | for(size_t i = 0; i != v.size(); ++i) |
520 | 0 | { |
521 | 0 | o << group_param_to_string(v[i]); |
522 | 0 | if(i != v.size() - 1) |
523 | 0 | o << ' '; |
524 | 0 | } |
525 | 0 | o << '\n'; |
526 | 0 | } |
527 | | |
528 | | void print_bool(std::ostream& o, |
529 | | const char* key, bool b) |
530 | 0 | { |
531 | 0 | o << key << " = " << (b ? "true" : "false") << '\n'; |
532 | 0 | } |
533 | | |
534 | | } |
535 | | |
536 | | void Policy::print(std::ostream& o) const |
537 | 0 | { |
538 | 0 | print_bool(o, "allow_tls10", allow_tls10()); |
539 | 0 | print_bool(o, "allow_tls11", allow_tls11()); |
540 | 0 | print_bool(o, "allow_tls12", allow_tls12()); |
541 | 0 | print_bool(o, "allow_dtls10", allow_dtls10()); |
542 | 0 | print_bool(o, "allow_dtls12", allow_dtls12()); |
543 | 0 | print_vec(o, "ciphers", allowed_ciphers()); |
544 | 0 | print_vec(o, "macs", allowed_macs()); |
545 | 0 | print_vec(o, "signature_hashes", allowed_signature_hashes()); |
546 | 0 | print_vec(o, "signature_methods", allowed_signature_methods()); |
547 | 0 | print_vec(o, "key_exchange_methods", allowed_key_exchange_methods()); |
548 | 0 | print_vec(o, "key_exchange_groups", key_exchange_groups()); |
549 | |
|
550 | 0 | print_bool(o, "allow_insecure_renegotiation", allow_insecure_renegotiation()); |
551 | 0 | print_bool(o, "include_time_in_hello_random", include_time_in_hello_random()); |
552 | 0 | print_bool(o, "allow_server_initiated_renegotiation", allow_server_initiated_renegotiation()); |
553 | 0 | print_bool(o, "hide_unknown_users", hide_unknown_users()); |
554 | 0 | print_bool(o, "server_uses_own_ciphersuite_preferences", server_uses_own_ciphersuite_preferences()); |
555 | 0 | print_bool(o, "negotiate_encrypt_then_mac", negotiate_encrypt_then_mac()); |
556 | 0 | print_bool(o, "support_cert_status_message", support_cert_status_message()); |
557 | 0 | o << "session_ticket_lifetime = " << session_ticket_lifetime() << '\n'; |
558 | 0 | o << "minimum_dh_group_size = " << minimum_dh_group_size() << '\n'; |
559 | 0 | o << "minimum_ecdh_group_size = " << minimum_ecdh_group_size() << '\n'; |
560 | 0 | o << "minimum_rsa_bits = " << minimum_rsa_bits() << '\n'; |
561 | 0 | o << "minimum_signature_strength = " << minimum_signature_strength() << '\n'; |
562 | 0 | } |
563 | | |
564 | | std::string Policy::to_string() const |
565 | 0 | { |
566 | 0 | std::ostringstream oss; |
567 | 0 | this->print(oss); |
568 | 0 | return oss.str(); |
569 | 0 | } |
570 | | |
571 | | std::vector<std::string> Strict_Policy::allowed_ciphers() const |
572 | 0 | { |
573 | 0 | return { "ChaCha20Poly1305", "AES-256/GCM", "AES-128/GCM" }; |
574 | 0 | } |
575 | | |
576 | | std::vector<std::string> Strict_Policy::allowed_signature_hashes() const |
577 | 0 | { |
578 | 0 | return { "SHA-512", "SHA-384"}; |
579 | 0 | } |
580 | | |
581 | | std::vector<std::string> Strict_Policy::allowed_macs() const |
582 | 0 | { |
583 | 0 | return { "AEAD" }; |
584 | 0 | } |
585 | | |
586 | | std::vector<std::string> Strict_Policy::allowed_key_exchange_methods() const |
587 | 0 | { |
588 | 0 | return { "CECPQ1", "ECDH" }; |
589 | 0 | } |
590 | | |
591 | 0 | bool Strict_Policy::allow_tls10() const { return false; } |
592 | 0 | bool Strict_Policy::allow_tls11() const { return false; } |
593 | 0 | bool Strict_Policy::allow_tls12() const { return true; } |
594 | 0 | bool Strict_Policy::allow_dtls10() const { return false; } |
595 | 0 | bool Strict_Policy::allow_dtls12() const { return true; } |
596 | | |
597 | | } |
598 | | |
599 | | } |