Gitiles
Code Review Sign In
192.168.1.100 / R306 / 2dbc1526a2b84342aa5d5d2a0b7c25c960d13710 / . / ap / lib / libssl / openssl-1.1.1o / ssl / statem / statem_local.h
blob: eae88053dcd7551df5ebb044e3f99838eb099bfa [file] [log] [blame]
yuezonghe824eb0c2024-06-27 02:32:26 -0700[diff] [blame]1/*
2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*****************************************************************************
11 * *
12 * The following definitions are PRIVATE to the state machine. They should *
13 * NOT be used outside of the state machine. *
14 * *
15 *****************************************************************************/
16
17/* Max message length definitions */
18
19/* The spec allows for a longer length than this, but we limit it */
20#define HELLO_VERIFY_REQUEST_MAX_LENGTH 258
21#define END_OF_EARLY_DATA_MAX_LENGTH 0
22#define SERVER_HELLO_MAX_LENGTH 20000
23#define HELLO_RETRY_REQUEST_MAX_LENGTH 20000
24#define ENCRYPTED_EXTENSIONS_MAX_LENGTH 20000
25#define SESSION_TICKET_MAX_LENGTH_TLS13 131338
26#define SESSION_TICKET_MAX_LENGTH_TLS12 65541
27#define SERVER_KEY_EXCH_MAX_LENGTH 102400
28#define SERVER_HELLO_DONE_MAX_LENGTH 0
29#define KEY_UPDATE_MAX_LENGTH 1
30#define CCS_MAX_LENGTH 1
31/* Max should actually be 36 but we are generous */
32#define FINISHED_MAX_LENGTH 64
33
34/* Dummy message type */
35#define SSL3_MT_DUMMY -1
36
37extern const unsigned char hrrrandom[];
38
39/* Message processing return codes */
40typedef enum {
41 /* Something bad happened */
42 MSG_PROCESS_ERROR,
43 /* We've finished reading - swap to writing */
44 MSG_PROCESS_FINISHED_READING,
45 /*
46 * We've completed the main processing of this message but there is some
47 * post processing to be done.
48 */
49 MSG_PROCESS_CONTINUE_PROCESSING,
50 /* We've finished this message - read the next message */
51 MSG_PROCESS_CONTINUE_READING
52} MSG_PROCESS_RETURN;
53
54typedef int (*confunc_f) (SSL *s, WPACKET *pkt);
55
56int ssl3_take_mac(SSL *s);
57int check_in_list(SSL *s, uint16_t group_id, const uint16_t *groups,
58 size_t num_groups, int checkallow);
59int create_synthetic_message_hash(SSL *s, const unsigned char *hashval,
60 size_t hashlen, const unsigned char *hrr,
61 size_t hrrlen);
62int parse_ca_names(SSL *s, PACKET *pkt);
63const STACK_OF(X509_NAME) *get_ca_names(SSL *s);
64int construct_ca_names(SSL *s, const STACK_OF(X509_NAME) *ca_sk, WPACKET *pkt);
65size_t construct_key_exchange_tbs(SSL *s, unsigned char **ptbs,
66 const void *param, size_t paramlen);
67
68/*
69 * TLS/DTLS client state machine functions
70 */
71int ossl_statem_client_read_transition(SSL *s, int mt);
72WRITE_TRAN ossl_statem_client_write_transition(SSL *s);
73WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst);
74WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst);
75int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt,
76 confunc_f *confunc, int *mt);
77size_t ossl_statem_client_max_message_size(SSL *s);
78MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt);
79WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst);
80
81/*
82 * TLS/DTLS server state machine functions
83 */
84int ossl_statem_server_read_transition(SSL *s, int mt);
85WRITE_TRAN ossl_statem_server_write_transition(SSL *s);
86WORK_STATE ossl_statem_server_pre_work(SSL *s, WORK_STATE wst);
87WORK_STATE ossl_statem_server_post_work(SSL *s, WORK_STATE wst);
88int ossl_statem_server_construct_message(SSL *s, WPACKET *pkt,
89 confunc_f *confunc,int *mt);
90size_t ossl_statem_server_max_message_size(SSL *s);
91MSG_PROCESS_RETURN ossl_statem_server_process_message(SSL *s, PACKET *pkt);
92WORK_STATE ossl_statem_server_post_process_message(SSL *s, WORK_STATE wst);
93
94/* Functions for getting new message data */
95__owur int tls_get_message_header(SSL *s, int *mt);
96__owur int tls_get_message_body(SSL *s, size_t *len);
97__owur int dtls_get_message(SSL *s, int *mt, size_t *len);
98
99/* Message construction and processing functions */
100__owur int tls_process_initial_server_flight(SSL *s);
101__owur MSG_PROCESS_RETURN tls_process_change_cipher_spec(SSL *s, PACKET *pkt);
102__owur MSG_PROCESS_RETURN tls_process_finished(SSL *s, PACKET *pkt);
103__owur int tls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
104__owur int dtls_construct_change_cipher_spec(SSL *s, WPACKET *pkt);
105
106__owur int tls_construct_finished(SSL *s, WPACKET *pkt);
107__owur int tls_construct_key_update(SSL *s, WPACKET *pkt);
108__owur MSG_PROCESS_RETURN tls_process_key_update(SSL *s, PACKET *pkt);
109__owur WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs,
110 int stop);
111__owur WORK_STATE dtls_wait_for_dry(SSL *s);
112
113/* some client-only functions */
114__owur int tls_construct_client_hello(SSL *s, WPACKET *pkt);
115__owur MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt);
116__owur MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt);
117__owur MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt);
118__owur int tls_process_cert_status_body(SSL *s, PACKET *pkt);
119__owur MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt);
120__owur MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt);
121__owur int tls_construct_cert_verify(SSL *s, WPACKET *pkt);
122__owur WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst);
123__owur int tls_construct_client_certificate(SSL *s, WPACKET *pkt);
124__owur int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
125__owur int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt);
126__owur int tls_client_key_exchange_post_work(SSL *s);
127__owur int tls_construct_cert_status_body(SSL *s, WPACKET *pkt);
128__owur int tls_construct_cert_status(SSL *s, WPACKET *pkt);
129__owur MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt);
130__owur MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt);
131__owur int ssl3_check_cert_and_algorithm(SSL *s);
132#ifndef OPENSSL_NO_NEXTPROTONEG
133__owur int tls_construct_next_proto(SSL *s, WPACKET *pkt);
134#endif
135__owur MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt);
136__owur MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt);
137__owur int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt);
138
139/* some server-only functions */
140__owur MSG_PROCESS_RETURN tls_process_client_hello(SSL *s, PACKET *pkt);
141__owur WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst);
142__owur int tls_construct_server_hello(SSL *s, WPACKET *pkt);
143__owur int dtls_construct_hello_verify_request(SSL *s, WPACKET *pkt);
144__owur int tls_construct_server_certificate(SSL *s, WPACKET *pkt);
145__owur int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt);
146__owur int tls_construct_certificate_request(SSL *s, WPACKET *pkt);
147__owur int tls_construct_server_done(SSL *s, WPACKET *pkt);
148__owur MSG_PROCESS_RETURN tls_process_client_certificate(SSL *s, PACKET *pkt);
149__owur MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt);
150__owur WORK_STATE tls_post_process_client_key_exchange(SSL *s, WORK_STATE wst);
151__owur MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt);
152#ifndef OPENSSL_NO_NEXTPROTONEG
153__owur MSG_PROCESS_RETURN tls_process_next_proto(SSL *s, PACKET *pkt);
154#endif
155__owur int tls_construct_new_session_ticket(SSL *s, WPACKET *pkt);
156MSG_PROCESS_RETURN tls_process_end_of_early_data(SSL *s, PACKET *pkt);
157
158
159/* Extension processing */
160
161typedef enum ext_return_en {
162 EXT_RETURN_FAIL,
163 EXT_RETURN_SENT,
164 EXT_RETURN_NOT_SENT
165} EXT_RETURN;
166
167__owur int tls_validate_all_contexts(SSL *s, unsigned int thisctx,
168 RAW_EXTENSION *exts);
169__owur int extension_is_relevant(SSL *s, unsigned int extctx,
170 unsigned int thisctx);
171__owur int tls_collect_extensions(SSL *s, PACKET *packet, unsigned int context,
172 RAW_EXTENSION **res, size_t *len, int init);
173__owur int tls_parse_extension(SSL *s, TLSEXT_INDEX idx, int context,
174 RAW_EXTENSION *exts, X509 *x, size_t chainidx);
175__owur int tls_parse_all_extensions(SSL *s, int context, RAW_EXTENSION *exts,
176 X509 *x, size_t chainidx, int fin);
177__owur int should_add_extension(SSL *s, unsigned int extctx,
178 unsigned int thisctx, int max_version);
179__owur int tls_construct_extensions(SSL *s, WPACKET *pkt, unsigned int context,
180 X509 *x, size_t chainidx);
181
182__owur int tls_psk_do_binder(SSL *s, const EVP_MD *md,
183 const unsigned char *msgstart,
184 size_t binderoffset, const unsigned char *binderin,
185 unsigned char *binderout,
186 SSL_SESSION *sess, int sign, int external);
187
188/* Server Extension processing */
189int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
190 X509 *x, size_t chainidx);
191int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
192 X509 *x, size_t chainidx);
193int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
194 X509 *x, size_t chainidx);
195#ifndef OPENSSL_NO_SRP
196int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
197 size_t chainidx);
198#endif
199int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context,
200 X509 *x, size_t chainidx);
201#ifndef OPENSSL_NO_EC
202int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
203 X509 *x, size_t chainidx);
204int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
205 X509 *x, size_t chainidxl);
206#endif
207int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
208 X509 *x, size_t chainidx);
209int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context,
210 X509 *x, size_t chainidx);
211int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
212 size_t chainidx);
213#ifndef OPENSSL_NO_OCSP
214int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
215 X509 *x, size_t chainidx);
216#endif
217#ifndef OPENSSL_NO_NEXTPROTONEG
218int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
219 size_t chainidx);
220#endif
221int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
222 size_t chainidx);
223#ifndef OPENSSL_NO_SRTP
224int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
225 size_t chainidx);
226#endif
227int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
228 size_t chainidx);
229int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
230 size_t chainidx);
231int tls_parse_ctos_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
232 size_t chainidx);
233int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
234 size_t chainidx);
235int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
236 X509 *x, size_t chainidx);
237int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
238 size_t chainidx);
239int tls_parse_ctos_post_handshake_auth(SSL *, PACKET *pkt, unsigned int context,
240 X509 *x, size_t chainidx);
241
242EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt,
243 unsigned int context, X509 *x,
244 size_t chainidx);
245EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt,
246 unsigned int context, X509 *x,
247 size_t chainidx);
248EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt,
249 unsigned int context, X509 *x,
250 size_t chainidx);
251EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt,
252 unsigned int context, X509 *x,
253 size_t chainidx);
254#ifndef OPENSSL_NO_EC
255EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt,
256 unsigned int context, X509 *x,
257 size_t chainidx);
258#endif
259EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt,
260 unsigned int context, X509 *x,
261 size_t chainidx);
262EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
263 unsigned int context, X509 *x,
264 size_t chainidx);
265#ifndef OPENSSL_NO_OCSP
266EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
267 unsigned int context, X509 *x,
268 size_t chainidx);
269#endif
270#ifndef OPENSSL_NO_NEXTPROTONEG
271EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
272 unsigned int context, X509 *x,
273 size_t chainidx);
274#endif
275EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context,
276 X509 *x, size_t chainidx);
277#ifndef OPENSSL_NO_SRTP
278EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
279 X509 *x, size_t chainidx);
280#endif
281EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context,
282 X509 *x, size_t chainidx);
283EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
284 X509 *x, size_t chainidx);
285EXT_RETURN tls_construct_stoc_supported_versions(SSL *s, WPACKET *pkt,
286 unsigned int context, X509 *x,
287 size_t chainidx);
288EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt,
289 unsigned int context, X509 *x,
290 size_t chainidx);
291EXT_RETURN tls_construct_stoc_cookie(SSL *s, WPACKET *pkt, unsigned int context,
292 X509 *x, size_t chainidx);
293/*
294 * Not in public headers as this is not an official extension. Only used when
295 * SSL_OP_CRYPTOPRO_TLSEXT_BUG is set.
296 */
297#define TLSEXT_TYPE_cryptopro_bug 0xfde8
298EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt,
299 unsigned int context, X509 *x,
300 size_t chainidx);
301EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context,
302 X509 *x, size_t chainidx);
303
304/* Client Extension processing */
305EXT_RETURN tls_construct_ctos_renegotiate(SSL *s, WPACKET *pkt, unsigned int context,
306 X509 *x, size_t chainidx);
307EXT_RETURN tls_construct_ctos_server_name(SSL *s, WPACKET *pkt, unsigned int context,
308 X509 *x, size_t chainidx);
309EXT_RETURN tls_construct_ctos_maxfragmentlen(SSL *s, WPACKET *pkt, unsigned int context,
310 X509 *x, size_t chainidx);
311#ifndef OPENSSL_NO_SRP
312EXT_RETURN tls_construct_ctos_srp(SSL *s, WPACKET *pkt, unsigned int context, X509 *x,
313 size_t chainidx);
314#endif
315#ifndef OPENSSL_NO_EC
316EXT_RETURN tls_construct_ctos_ec_pt_formats(SSL *s, WPACKET *pkt,
317 unsigned int context, X509 *x,
318 size_t chainidx);
319EXT_RETURN tls_construct_ctos_supported_groups(SSL *s, WPACKET *pkt,
320 unsigned int context, X509 *x,
321 size_t chainidx);
322#endif
323EXT_RETURN tls_construct_ctos_early_data(SSL *s, WPACKET *pkt,
324 unsigned int context, X509 *x,
325 size_t chainidx);
326EXT_RETURN tls_construct_ctos_session_ticket(SSL *s, WPACKET *pkt,
327 unsigned int context, X509 *x,
328 size_t chainidx);
329EXT_RETURN tls_construct_ctos_sig_algs(SSL *s, WPACKET *pkt,
330 unsigned int context, X509 *x,
331 size_t chainidx);
332#ifndef OPENSSL_NO_OCSP
333EXT_RETURN tls_construct_ctos_status_request(SSL *s, WPACKET *pkt,
334 unsigned int context, X509 *x,
335 size_t chainidx);
336#endif
337#ifndef OPENSSL_NO_NEXTPROTONEG
338EXT_RETURN tls_construct_ctos_npn(SSL *s, WPACKET *pkt, unsigned int context,
339 X509 *x, size_t chainidx);
340#endif
341EXT_RETURN tls_construct_ctos_alpn(SSL *s, WPACKET *pkt, unsigned int context,
342 X509 *x, size_t chainidx);
343#ifndef OPENSSL_NO_SRTP
344EXT_RETURN tls_construct_ctos_use_srtp(SSL *s, WPACKET *pkt, unsigned int context,
345 X509 *x, size_t chainidx);
346#endif
347EXT_RETURN tls_construct_ctos_etm(SSL *s, WPACKET *pkt, unsigned int context,
348 X509 *x, size_t chainidx);
349#ifndef OPENSSL_NO_CT
350EXT_RETURN tls_construct_ctos_sct(SSL *s, WPACKET *pkt, unsigned int context,
351 X509 *x, size_t chainidx);
352#endif
353EXT_RETURN tls_construct_ctos_ems(SSL *s, WPACKET *pkt, unsigned int context,
354 X509 *x, size_t chainidx);
355EXT_RETURN tls_construct_ctos_supported_versions(SSL *s, WPACKET *pkt,
356 unsigned int context, X509 *x,
357 size_t chainidx);
358EXT_RETURN tls_construct_ctos_key_share(SSL *s, WPACKET *pkt,
359 unsigned int context, X509 *x,
360 size_t chainidx);
361EXT_RETURN tls_construct_ctos_psk_kex_modes(SSL *s, WPACKET *pkt,
362 unsigned int context, X509 *x,
363 size_t chainidx);
364EXT_RETURN tls_construct_ctos_cookie(SSL *s, WPACKET *pkt, unsigned int context,
365 X509 *x, size_t chainidx);
366EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt,
367 unsigned int context, X509 *x,
368 size_t chainidx);
369EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context,
370 X509 *x, size_t chainidx);
371EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt, unsigned int context,
372 X509 *x, size_t chainidx);
373
374int tls_parse_stoc_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
375 X509 *x, size_t chainidx);
376int tls_parse_stoc_server_name(SSL *s, PACKET *pkt, unsigned int context,
377 X509 *x, size_t chainidx);
378int tls_parse_stoc_early_data(SSL *s, PACKET *pkt, unsigned int context,
379 X509 *x, size_t chainidx);
380int tls_parse_stoc_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
381 X509 *x, size_t chainidx);
382#ifndef OPENSSL_NO_EC
383int tls_parse_stoc_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
384 X509 *x, size_t chainidx);
385#endif
386int tls_parse_stoc_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
387 X509 *x, size_t chainidx);
388#ifndef OPENSSL_NO_OCSP
389int tls_parse_stoc_status_request(SSL *s, PACKET *pkt, unsigned int context,
390 X509 *x, size_t chainidx);
391#endif
392#ifndef OPENSSL_NO_CT
393int tls_parse_stoc_sct(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
394 size_t chainidx);
395#endif
396#ifndef OPENSSL_NO_NEXTPROTONEG
397int tls_parse_stoc_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
398 size_t chainidx);
399#endif
400int tls_parse_stoc_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
401 size_t chainidx);
402#ifndef OPENSSL_NO_SRTP
403int tls_parse_stoc_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
404 size_t chainidx);
405#endif
406int tls_parse_stoc_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
407 size_t chainidx);
408int tls_parse_stoc_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
409 size_t chainidx);
410int tls_parse_stoc_supported_versions(SSL *s, PACKET *pkt, unsigned int context,
411 X509 *x, size_t chainidx);
412int tls_parse_stoc_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
413 size_t chainidx);
414int tls_parse_stoc_cookie(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
415 size_t chainidx);
416int tls_parse_stoc_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
417 size_t chainidx);
418
419int tls_handle_alpn(SSL *s);
420
421int tls13_save_handshake_digest_for_pha(SSL *s);
422int tls13_restore_handshake_digest_for_pha(SSL *s);