414 lines
16 KiB
C
Executable file
414 lines
16 KiB
C
Executable file
/* $OpenBSD: tls13_internal.h,v 1.96 2022/01/05 17:10:02 jsing Exp $ */
|
|
/*
|
|
* Copyright (c) 2018 Bob Beck <beck@openbsd.org>
|
|
* Copyright (c) 2018 Theo Buehler <tb@openbsd.org>
|
|
* Copyright (c) 2018, 2019 Joel Sing <jsing@openbsd.org>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
|
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
|
|
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef HEADER_TLS13_INTERNAL_H
|
|
#define HEADER_TLS13_INTERNAL_H
|
|
|
|
#include <openssl/evp.h>
|
|
#include <openssl/ssl.h>
|
|
|
|
#include "bytestring.h"
|
|
#include "tls_internal.h"
|
|
|
|
__BEGIN_HIDDEN_DECLS
|
|
|
|
#define TLS13_HS_CLIENT 1
|
|
#define TLS13_HS_SERVER 2
|
|
|
|
#define TLS13_IO_SUCCESS 1
|
|
#define TLS13_IO_EOF 0
|
|
#define TLS13_IO_FAILURE -1
|
|
#define TLS13_IO_ALERT -2
|
|
#define TLS13_IO_WANT_POLLIN -3
|
|
#define TLS13_IO_WANT_POLLOUT -4
|
|
#define TLS13_IO_WANT_RETRY -5 /* Retry the previous call immediately. */
|
|
#define TLS13_IO_USE_LEGACY -6
|
|
#define TLS13_IO_RECORD_VERSION -7
|
|
#define TLS13_IO_RECORD_OVERFLOW -8
|
|
|
|
#define TLS13_ERR_VERIFY_FAILED 16
|
|
#define TLS13_ERR_HRR_FAILED 17
|
|
#define TLS13_ERR_TRAILING_DATA 18
|
|
#define TLS13_ERR_NO_SHARED_CIPHER 19
|
|
#define TLS13_ERR_NO_CERTIFICATE 20
|
|
#define TLS13_ERR_NO_PEER_CERTIFICATE 21
|
|
|
|
#define TLS13_ALERT_LEVEL_WARNING 1
|
|
#define TLS13_ALERT_LEVEL_FATAL 2
|
|
|
|
#define TLS13_ALERT_CLOSE_NOTIFY 0
|
|
#define TLS13_ALERT_UNEXPECTED_MESSAGE 10
|
|
#define TLS13_ALERT_BAD_RECORD_MAC 20
|
|
#define TLS13_ALERT_RECORD_OVERFLOW 22
|
|
#define TLS13_ALERT_HANDSHAKE_FAILURE 40
|
|
#define TLS13_ALERT_BAD_CERTIFICATE 42
|
|
#define TLS13_ALERT_UNSUPPORTED_CERTIFICATE 43
|
|
#define TLS13_ALERT_CERTIFICATE_REVOKED 44
|
|
#define TLS13_ALERT_CERTIFICATE_EXPIRED 45
|
|
#define TLS13_ALERT_CERTIFICATE_UNKNOWN 46
|
|
#define TLS13_ALERT_ILLEGAL_PARAMETER 47
|
|
#define TLS13_ALERT_UNKNOWN_CA 48
|
|
#define TLS13_ALERT_ACCESS_DENIED 49
|
|
#define TLS13_ALERT_DECODE_ERROR 50
|
|
#define TLS13_ALERT_DECRYPT_ERROR 51
|
|
#define TLS13_ALERT_PROTOCOL_VERSION 70
|
|
#define TLS13_ALERT_INSUFFICIENT_SECURITY 71
|
|
#define TLS13_ALERT_INTERNAL_ERROR 80
|
|
#define TLS13_ALERT_INAPPROPRIATE_FALLBACK 86
|
|
#define TLS13_ALERT_USER_CANCELED 90
|
|
#define TLS13_ALERT_MISSING_EXTENSION 109
|
|
#define TLS13_ALERT_UNSUPPORTED_EXTENSION 110
|
|
#define TLS13_ALERT_UNRECOGNIZED_NAME 112
|
|
#define TLS13_ALERT_BAD_CERTIFICATE_STATUS_RESPONSE 113
|
|
#define TLS13_ALERT_UNKNOWN_PSK_IDENTITY 115
|
|
#define TLS13_ALERT_CERTIFICATE_REQUIRED 116
|
|
#define TLS13_ALERT_NO_APPLICATION_PROTOCOL 120
|
|
|
|
#define TLS13_INFO_HANDSHAKE_STARTED SSL_CB_HANDSHAKE_START
|
|
#define TLS13_INFO_HANDSHAKE_COMPLETED SSL_CB_HANDSHAKE_DONE
|
|
#define TLS13_INFO_ACCEPT_LOOP SSL_CB_ACCEPT_LOOP
|
|
#define TLS13_INFO_CONNECT_LOOP SSL_CB_CONNECT_LOOP
|
|
#define TLS13_INFO_ACCEPT_EXIT SSL_CB_ACCEPT_EXIT
|
|
#define TLS13_INFO_CONNECT_EXIT SSL_CB_CONNECT_EXIT
|
|
|
|
typedef void (*tls13_alert_cb)(uint8_t _alert_desc, void *_cb_arg);
|
|
typedef ssize_t (*tls13_phh_recv_cb)(void *_cb_arg, CBS *_cbs);
|
|
typedef void (*tls13_phh_sent_cb)(void *_cb_arg);
|
|
typedef void (*tls13_handshake_message_cb)(void *_cb_arg);
|
|
typedef void (*tls13_info_cb)(void *_cb_arg, int _state, int _ret);
|
|
typedef int (*tls13_ocsp_status_cb)(void *_cb_arg);
|
|
|
|
/*
|
|
* Secrets.
|
|
*/
|
|
struct tls13_secret {
|
|
uint8_t *data;
|
|
size_t len;
|
|
};
|
|
|
|
/* RFC 8446 Section 7.1 Page 92 */
|
|
struct tls13_secrets {
|
|
const EVP_MD *digest;
|
|
int resumption;
|
|
int init_done;
|
|
int early_done;
|
|
int handshake_done;
|
|
int schedule_done;
|
|
int insecure; /* Set by tests */
|
|
struct tls13_secret zeros;
|
|
struct tls13_secret empty_hash;
|
|
struct tls13_secret extracted_early;
|
|
struct tls13_secret binder_key;
|
|
struct tls13_secret client_early_traffic;
|
|
struct tls13_secret early_exporter_master;
|
|
struct tls13_secret derived_early;
|
|
struct tls13_secret extracted_handshake;
|
|
struct tls13_secret client_handshake_traffic;
|
|
struct tls13_secret server_handshake_traffic;
|
|
struct tls13_secret derived_handshake;
|
|
struct tls13_secret extracted_master;
|
|
struct tls13_secret client_application_traffic;
|
|
struct tls13_secret server_application_traffic;
|
|
struct tls13_secret exporter_master;
|
|
struct tls13_secret resumption_master;
|
|
};
|
|
|
|
int tls13_secret_init(struct tls13_secret *secret, size_t len);
|
|
void tls13_secret_cleanup(struct tls13_secret *secret);
|
|
struct tls13_secrets *tls13_secrets_create(const EVP_MD *digest,
|
|
int resumption);
|
|
void tls13_secrets_destroy(struct tls13_secrets *secrets);
|
|
|
|
int tls13_hkdf_expand_label(struct tls13_secret *out, const EVP_MD *digest,
|
|
const struct tls13_secret *secret, const char *label,
|
|
const struct tls13_secret *context);
|
|
int tls13_hkdf_expand_label_with_length(struct tls13_secret *out,
|
|
const EVP_MD *digest, const struct tls13_secret *secret,
|
|
const uint8_t *label, size_t label_len, const struct tls13_secret *context);
|
|
|
|
int tls13_derive_secret(struct tls13_secret *out, const EVP_MD *digest,
|
|
const struct tls13_secret *secret, const char *label,
|
|
const struct tls13_secret *context);
|
|
int tls13_derive_secret_with_label_length(struct tls13_secret *out,
|
|
const EVP_MD *digest, const struct tls13_secret *secret,
|
|
const uint8_t *label, size_t label_len, const struct tls13_secret *context);
|
|
|
|
int tls13_derive_early_secrets(struct tls13_secrets *secrets, uint8_t *psk,
|
|
size_t psk_len, const struct tls13_secret *context);
|
|
int tls13_derive_handshake_secrets(struct tls13_secrets *secrets,
|
|
const uint8_t *ecdhe, size_t ecdhe_len, const struct tls13_secret *context);
|
|
int tls13_derive_application_secrets(struct tls13_secrets *secrets,
|
|
const struct tls13_secret *context);
|
|
int tls13_update_client_traffic_secret(struct tls13_secrets *secrets);
|
|
int tls13_update_server_traffic_secret(struct tls13_secrets *secrets);
|
|
|
|
/*
|
|
* Record Layer.
|
|
*/
|
|
struct tls13_record_layer;
|
|
|
|
struct tls13_record_layer_callbacks {
|
|
tls_read_cb wire_read;
|
|
tls_write_cb wire_write;
|
|
tls_flush_cb wire_flush;
|
|
tls13_alert_cb alert_recv;
|
|
tls13_alert_cb alert_sent;
|
|
tls13_phh_recv_cb phh_recv;
|
|
tls13_phh_sent_cb phh_sent;
|
|
};
|
|
|
|
struct tls13_record_layer *tls13_record_layer_new(
|
|
const struct tls13_record_layer_callbacks *callbacks, void *cb_arg);
|
|
void tls13_record_layer_free(struct tls13_record_layer *rl);
|
|
void tls13_record_layer_allow_ccs(struct tls13_record_layer *rl, int allow);
|
|
void tls13_record_layer_allow_legacy_alerts(struct tls13_record_layer *rl, int allow);
|
|
void tls13_record_layer_rcontent(struct tls13_record_layer *rl, CBS *cbs);
|
|
void tls13_record_layer_set_aead(struct tls13_record_layer *rl,
|
|
const EVP_AEAD *aead);
|
|
void tls13_record_layer_set_hash(struct tls13_record_layer *rl,
|
|
const EVP_MD *hash);
|
|
void tls13_record_layer_set_legacy_version(struct tls13_record_layer *rl,
|
|
uint16_t version);
|
|
void tls13_record_layer_set_retry_after_phh(struct tls13_record_layer *rl, int retry);
|
|
void tls13_record_layer_handshake_completed(struct tls13_record_layer *rl);
|
|
int tls13_record_layer_set_read_traffic_key(struct tls13_record_layer *rl,
|
|
struct tls13_secret *read_key);
|
|
int tls13_record_layer_set_write_traffic_key(struct tls13_record_layer *rl,
|
|
struct tls13_secret *write_key);
|
|
ssize_t tls13_record_layer_send_pending(struct tls13_record_layer *rl);
|
|
ssize_t tls13_record_layer_phh(struct tls13_record_layer *rl, CBS *cbs);
|
|
ssize_t tls13_record_layer_flush(struct tls13_record_layer *rl);
|
|
|
|
ssize_t tls13_read_handshake_data(struct tls13_record_layer *rl, uint8_t *buf, size_t n);
|
|
ssize_t tls13_write_handshake_data(struct tls13_record_layer *rl, const uint8_t *buf,
|
|
size_t n);
|
|
ssize_t tls13_pending_application_data(struct tls13_record_layer *rl);
|
|
ssize_t tls13_peek_application_data(struct tls13_record_layer *rl, uint8_t *buf, size_t n);
|
|
ssize_t tls13_read_application_data(struct tls13_record_layer *rl, uint8_t *buf, size_t n);
|
|
ssize_t tls13_write_application_data(struct tls13_record_layer *rl, const uint8_t *buf,
|
|
size_t n);
|
|
|
|
ssize_t tls13_send_alert(struct tls13_record_layer *rl, uint8_t alert_desc);
|
|
ssize_t tls13_send_dummy_ccs(struct tls13_record_layer *rl);
|
|
|
|
/*
|
|
* Handshake Messages.
|
|
*/
|
|
struct tls13_handshake_msg;
|
|
|
|
struct tls13_handshake_msg *tls13_handshake_msg_new(void);
|
|
void tls13_handshake_msg_free(struct tls13_handshake_msg *msg);
|
|
void tls13_handshake_msg_data(struct tls13_handshake_msg *msg, CBS *cbs);
|
|
int tls13_handshake_msg_set_buffer(struct tls13_handshake_msg *msg, CBS *cbs);
|
|
uint8_t tls13_handshake_msg_type(struct tls13_handshake_msg *msg);
|
|
int tls13_handshake_msg_content(struct tls13_handshake_msg *msg, CBS *cbs);
|
|
int tls13_handshake_msg_start(struct tls13_handshake_msg *msg, CBB *body,
|
|
uint8_t msg_type);
|
|
int tls13_handshake_msg_finish(struct tls13_handshake_msg *msg);
|
|
int tls13_handshake_msg_recv(struct tls13_handshake_msg *msg,
|
|
struct tls13_record_layer *rl);
|
|
int tls13_handshake_msg_send(struct tls13_handshake_msg *msg,
|
|
struct tls13_record_layer *rl);
|
|
|
|
struct tls13_handshake_stage {
|
|
uint8_t hs_type;
|
|
uint8_t message_number;
|
|
};
|
|
|
|
struct ssl_handshake_tls13_st;
|
|
|
|
struct tls13_error {
|
|
int code;
|
|
int subcode;
|
|
int errnum;
|
|
const char *file;
|
|
int line;
|
|
char *msg;
|
|
};
|
|
|
|
struct tls13_ctx {
|
|
struct tls13_error error;
|
|
|
|
SSL *ssl;
|
|
struct ssl_handshake_st *hs;
|
|
uint8_t mode;
|
|
struct tls13_handshake_stage handshake_stage;
|
|
int handshake_started;
|
|
int handshake_completed;
|
|
int need_flush;
|
|
int middlebox_compat;
|
|
int send_dummy_ccs;
|
|
int send_dummy_ccs_after;
|
|
|
|
int close_notify_sent;
|
|
int close_notify_recv;
|
|
|
|
const EVP_AEAD *aead;
|
|
const EVP_MD *hash;
|
|
|
|
struct tls13_record_layer *rl;
|
|
struct tls13_handshake_msg *hs_msg;
|
|
uint8_t key_update_request;
|
|
uint8_t alert;
|
|
int phh_count;
|
|
time_t phh_last_seen;
|
|
|
|
tls13_handshake_message_cb handshake_message_sent_cb;
|
|
tls13_handshake_message_cb handshake_message_recv_cb;
|
|
tls13_info_cb info_cb;
|
|
tls13_ocsp_status_cb ocsp_status_recv_cb;
|
|
};
|
|
#ifndef TLS13_PHH_LIMIT_TIME
|
|
#define TLS13_PHH_LIMIT_TIME 3600
|
|
#endif
|
|
#ifndef TLS13_PHH_LIMIT
|
|
#define TLS13_PHH_LIMIT 100
|
|
#endif
|
|
|
|
struct tls13_ctx *tls13_ctx_new(int mode);
|
|
void tls13_ctx_free(struct tls13_ctx *ctx);
|
|
|
|
const EVP_AEAD *tls13_cipher_aead(const SSL_CIPHER *cipher);
|
|
const EVP_MD *tls13_cipher_hash(const SSL_CIPHER *cipher);
|
|
|
|
/*
|
|
* Legacy interfaces.
|
|
*/
|
|
int tls13_use_legacy_client(struct tls13_ctx *ctx);
|
|
int tls13_use_legacy_server(struct tls13_ctx *ctx);
|
|
int tls13_legacy_accept(SSL *ssl);
|
|
int tls13_legacy_connect(SSL *ssl);
|
|
int tls13_legacy_return_code(SSL *ssl, ssize_t ret);
|
|
ssize_t tls13_legacy_wire_read_cb(void *buf, size_t n, void *arg);
|
|
ssize_t tls13_legacy_wire_write_cb(const void *buf, size_t n, void *arg);
|
|
ssize_t tls13_legacy_wire_flush_cb(void *arg);
|
|
int tls13_legacy_pending(const SSL *ssl);
|
|
int tls13_legacy_read_bytes(SSL *ssl, int type, unsigned char *buf, int len,
|
|
int peek);
|
|
int tls13_legacy_write_bytes(SSL *ssl, int type, const void *buf, int len);
|
|
int tls13_legacy_shutdown(SSL *ssl);
|
|
int tls13_legacy_servername_process(struct tls13_ctx *ctx, uint8_t *alert);
|
|
|
|
/*
|
|
* Message Types - RFC 8446, Section B.3.
|
|
*
|
|
* Values listed as "_RESERVED" were used in previous versions of TLS and are
|
|
* listed here for completeness. TLS 1.3 implementations MUST NOT send them but
|
|
* might receive them from older TLS implementations.
|
|
*/
|
|
#define TLS13_MT_HELLO_REQUEST_RESERVED 0
|
|
#define TLS13_MT_CLIENT_HELLO 1
|
|
#define TLS13_MT_SERVER_HELLO 2
|
|
#define TLS13_MT_HELLO_VERIFY_REQUEST_RESERVED 3
|
|
#define TLS13_MT_NEW_SESSION_TICKET 4
|
|
#define TLS13_MT_END_OF_EARLY_DATA 5
|
|
#define TLS13_MT_HELLO_RETRY_REQUEST_RESERVED 6
|
|
#define TLS13_MT_ENCRYPTED_EXTENSIONS 8
|
|
#define TLS13_MT_CERTIFICATE 11
|
|
#define TLS13_MT_SERVER_KEY_EXCHANGE_RESERVED 12
|
|
#define TLS13_MT_CERTIFICATE_REQUEST 13
|
|
#define TLS13_MT_SERVER_HELLO_DONE_RESERVED 14
|
|
#define TLS13_MT_CERTIFICATE_VERIFY 15
|
|
#define TLS13_MT_CLIENT_KEY_EXCHANGE_RESERVED 16
|
|
#define TLS13_MT_FINISHED 20
|
|
#define TLS13_MT_CERTIFICATE_URL_RESERVED 21
|
|
#define TLS13_MT_CERTIFICATE_STATUS_RESERVED 22
|
|
#define TLS13_MT_SUPPLEMENTAL_DATA_RESERVED 23
|
|
#define TLS13_MT_KEY_UPDATE 24
|
|
#define TLS13_MT_MESSAGE_HASH 254
|
|
|
|
int tls13_handshake_msg_record(struct tls13_ctx *ctx);
|
|
int tls13_handshake_perform(struct tls13_ctx *ctx);
|
|
|
|
int tls13_client_init(struct tls13_ctx *ctx);
|
|
int tls13_server_init(struct tls13_ctx *ctx);
|
|
int tls13_client_connect(struct tls13_ctx *ctx);
|
|
int tls13_server_accept(struct tls13_ctx *ctx);
|
|
|
|
int tls13_client_hello_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_hello_sent(struct tls13_ctx *ctx);
|
|
int tls13_client_hello_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_hello_retry_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_hello_retry_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_end_of_early_data_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_end_of_early_data_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_certificate_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_certificate_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_certificate_verify_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_certificate_verify_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_finished_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_client_finished_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_client_finished_sent(struct tls13_ctx *ctx);
|
|
int tls13_server_hello_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_hello_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_hello_sent(struct tls13_ctx *ctx);
|
|
int tls13_server_hello_retry_request_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_hello_retry_request_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_hello_retry_request_sent(struct tls13_ctx *ctx);
|
|
int tls13_server_encrypted_extensions_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_encrypted_extensions_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_certificate_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_certificate_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_certificate_request_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_certificate_request_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_certificate_verify_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_certificate_verify_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_finished_recv(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_server_finished_send(struct tls13_ctx *ctx, CBB *cbb);
|
|
int tls13_server_finished_sent(struct tls13_ctx *ctx);
|
|
|
|
void tls13_error_clear(struct tls13_error *error);
|
|
int tls13_cert_add(struct tls13_ctx *ctx, CBB *cbb, X509 *cert,
|
|
int(*build_extensions)(SSL *s, uint16_t msg_type, CBB *cbb));
|
|
|
|
int tls13_synthetic_handshake_message(struct tls13_ctx *ctx);
|
|
int tls13_clienthello_hash_init(struct tls13_ctx *ctx);
|
|
void tls13_clienthello_hash_clear(struct ssl_handshake_tls13_st *hs);
|
|
int tls13_clienthello_hash_update_bytes(struct tls13_ctx *ctx, void *data,
|
|
size_t len);
|
|
int tls13_clienthello_hash_update(struct tls13_ctx *ctx, CBS *cbs);
|
|
int tls13_clienthello_hash_finalize(struct tls13_ctx *ctx);
|
|
int tls13_clienthello_hash_validate(struct tls13_ctx *ctx);
|
|
|
|
int tls13_error_set(struct tls13_error *error, int code, int subcode,
|
|
const char *file, int line, const char *fmt, ...);
|
|
int tls13_error_setx(struct tls13_error *error, int code, int subcode,
|
|
const char *file, int line, const char *fmt, ...);
|
|
|
|
#define tls13_set_error(ctx, code, subcode, fmt, ...) \
|
|
tls13_error_set(&(ctx)->error, (code), (subcode), __FILE__, __LINE__, \
|
|
(fmt), __VA_ARGS__)
|
|
#define tls13_set_errorx(ctx, code, subcode, fmt, ...) \
|
|
tls13_error_setx(&(ctx)->error, (code), (subcode), __FILE__, __LINE__, \
|
|
(fmt), __VA_ARGS__)
|
|
|
|
int tls13_exporter(struct tls13_ctx *ctx, const uint8_t *label, size_t label_len,
|
|
const uint8_t *context_value, size_t context_value_len, uint8_t *out,
|
|
size_t out_len);
|
|
|
|
extern const uint8_t tls13_downgrade_12[8];
|
|
extern const uint8_t tls13_downgrade_11[8];
|
|
extern const uint8_t tls13_hello_retry_request_hash[32];
|
|
extern const uint8_t tls13_cert_verify_pad[64];
|
|
extern const uint8_t tls13_cert_client_verify_context[];
|
|
extern const uint8_t tls13_cert_server_verify_context[];
|
|
|
|
__END_HIDDEN_DECLS
|
|
|
|
#endif
|