static int resolve_ecdhe_secret(SSL_HANDSHAKE *hs, int *out_need_retry,
SSL_CLIENT_HELLO *client_hello) {
SSL *const ssl = hs->ssl;
*out_need_retry = 0;
/* We only support connections that include an ECDHE key exchange. */
CBS key_share;
if (!ssl_client_hello_get_extension(client_hello, &key_share,
TLSEXT_TYPE_key_share)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
return 0;
}
int found_key_share;
uint8_t *dhe_secret;
size_t dhe_secret_len;
uint8_t alert = SSL_AD_DECODE_ERROR;
if (!ssl_ext_key_share_parse_clienthello(hs, &found_key_share, &dhe_secret,
&dhe_secret_len, &alert,
&key_share)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return 0;
}
if (!found_key_share) {
*out_need_retry = 1;
return 0;
}
int ok = tls13_advance_key_schedule(hs, dhe_secret, dhe_secret_len);
OPENSSL_free(dhe_secret);
return ok;
}
static int resolve_psk_secret(SSL *ssl) {
SSL_HANDSHAKE *hs = ssl->s3->hs;
if (ssl->s3->tmp.new_cipher->algorithm_auth != SSL_aPSK) {
return tls13_advance_key_schedule(ssl, kZeroes, hs->hash_len);
}
uint8_t resumption_psk[EVP_MAX_MD_SIZE];
if (!tls13_resumption_psk(ssl, resumption_psk, hs->hash_len,
ssl->s3->new_session) ||
!tls13_advance_key_schedule(ssl, resumption_psk, hs->hash_len)) {
return 0;
}
return 1;
}
static int resolve_psk_secret(SSL *ssl) {
SSL_HANDSHAKE *hs = ssl->s3->hs;
if (ssl->s3->tmp.new_cipher->algorithm_auth != SSL_aPSK) {
return tls13_advance_key_schedule(ssl, kZeroes, hs->hash_len);
}
/* TODO(davidben): Support PSK. */
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
return 0;
}
static enum ssl_hs_wait_t do_flush(SSL *ssl, SSL_HANDSHAKE *hs) {
/* Update the secret to the master secret and derive traffic keys. */
if (!tls13_advance_key_schedule(ssl, kZeroes, hs->hash_len) ||
!tls13_derive_traffic_secret_0(ssl) ||
!tls13_set_traffic_key(ssl, type_data, evp_aead_seal,
hs->traffic_secret_0, hs->hash_len)) {
return ssl_hs_error;
}
hs->state = state_process_client_certificate;
return ssl_hs_flush_and_read_message;
}
static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
if (!tls13_add_finished(hs) ||
/* Update the secret to the master secret and derive traffic keys. */
!tls13_advance_key_schedule(hs, kZeroes, hs->hash_len) ||
!tls13_derive_application_secrets(hs) ||
!tls13_set_traffic_key(ssl, evp_aead_seal, hs->server_traffic_secret_0,
hs->hash_len)) {
return ssl_hs_error;
}
hs->tls13_state = state_process_client_certificate;
return ssl_hs_flush_and_read_message;
}
static int resolve_ecdhe_secret(SSL *ssl, int *out_need_retry,
struct ssl_early_callback_ctx *early_ctx) {
*out_need_retry = 0;
SSL_HANDSHAKE *hs = ssl->s3->hs;
if (ssl->s3->tmp.new_cipher->algorithm_mkey != SSL_kECDHE) {
return tls13_advance_key_schedule(ssl, kZeroes, hs->hash_len);
}
CBS key_share;
if (!ssl_early_callback_get_extension(early_ctx, &key_share,
TLSEXT_TYPE_key_share)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
return ssl_hs_error;
}
int found_key_share;
uint8_t *dhe_secret;
size_t dhe_secret_len;
uint8_t alert;
if (!ssl_ext_key_share_parse_clienthello(ssl, &found_key_share, &dhe_secret,
&dhe_secret_len, &alert,
&key_share)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return 0;
}
if (!found_key_share) {
*out_need_retry = 1;
return 0;
}
int ok = tls13_advance_key_schedule(ssl, dhe_secret, dhe_secret_len);
OPENSSL_free(dhe_secret);
return ok;
}
static enum ssl_hs_wait_t do_process_server_finished(SSL *ssl,
SSL_HANDSHAKE *hs) {
static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
if (!tls13_check_message_type(ssl, SSL3_MT_FINISHED) ||
!tls13_process_finished(ssl) ||
!ssl->method->hash_current_message(ssl) ||
/* Update the secret to the master secret and derive traffic keys. */
!tls13_advance_key_schedule(ssl, kZeroes, hs->hash_len) ||
!tls13_derive_traffic_secret_0(ssl)) {
return ssl_hs_error;
}
hs->state = state_certificate_callback;
return ssl_hs_ok;
}
static enum ssl_hs_wait_t do_send_server_finished(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
if (!tls13_add_finished(hs) ||
/* Update the secret to the master secret and derive traffic keys. */
!tls13_advance_key_schedule(hs, kZeroes, hs->hash_len) ||
!tls13_derive_application_secrets(hs) ||
!tls13_set_traffic_key(ssl, evp_aead_seal, hs->server_traffic_secret_0,
hs->hash_len)) {
return ssl_hs_error;
}
if (ssl->early_data_accepted) {
/* If accepting 0-RTT, we send tickets half-RTT. This gets the tickets on
* the wire sooner and also avoids triggering a write on |SSL_read| when
* processing the client Finished. This requires computing the client
* Finished early. See draft-ietf-tls-tls13-18, section 4.5.1. */
size_t finished_len;
if (!tls13_finished_mac(hs, hs->expected_client_finished, &finished_len,
0 /* client */)) {
return ssl_hs_error;
}
if (finished_len != hs->hash_len) {
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
return ssl_hs_error;
}
/* Feed the predicted Finished into the transcript. This allows us to derive
* the resumption secret early and send half-RTT tickets.
*
* TODO(davidben): This will need to be updated for DTLS 1.3. */
assert(!SSL_is_dtls(hs->ssl));
uint8_t header[4] = {SSL3_MT_FINISHED, 0, 0, hs->hash_len};
if (!SSL_TRANSCRIPT_update(&hs->transcript, header, sizeof(header)) ||
!SSL_TRANSCRIPT_update(&hs->transcript, hs->expected_client_finished,
hs->hash_len) ||
!tls13_derive_resumption_secret(hs) ||
!add_new_session_tickets(hs)) {
return ssl_hs_error;
}
}
hs->tls13_state = state_read_second_client_flight;
return ssl_hs_flush;
}
static enum ssl_hs_wait_t do_process_server_hello(SSL *ssl, SSL_HANDSHAKE *hs) {
if (!tls13_check_message_type(ssl, SSL3_MT_SERVER_HELLO)) {
return ssl_hs_error;
}
CBS cbs, server_random, extensions;
uint16_t server_wire_version;
uint16_t cipher_suite;
CBS_init(&cbs, ssl->init_msg, ssl->init_num);
if (!CBS_get_u16(&cbs, &server_wire_version) ||
!CBS_get_bytes(&cbs, &server_random, SSL3_RANDOM_SIZE) ||
!CBS_get_u16(&cbs, &cipher_suite) ||
!CBS_get_u16_length_prefixed(&cbs, &extensions) ||
CBS_len(&cbs) != 0) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
return ssl_hs_error;
}
if (server_wire_version != ssl->version) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_VERSION_NUMBER);
return ssl_hs_error;
}
/* Parse out the extensions. */
int have_key_share = 0;
CBS key_share;
while (CBS_len(&extensions) != 0) {
uint16_t type;
CBS extension;
if (!CBS_get_u16(&extensions, &type) ||
!CBS_get_u16_length_prefixed(&extensions, &extension)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_PARSE_TLSEXT);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
return ssl_hs_error;
}
switch (type) {
case TLSEXT_TYPE_key_share:
if (have_key_share) {
OPENSSL_PUT_ERROR(SSL, SSL_R_DUPLICATE_EXTENSION);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
return ssl_hs_error;
}
key_share = extension;
have_key_share = 1;
break;
default:
OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
return ssl_hs_error;
}
}
assert(ssl->s3->have_version);
memcpy(ssl->s3->server_random, CBS_data(&server_random), SSL3_RANDOM_SIZE);
ssl->hit = 0;
if (!ssl_get_new_session(ssl, 0)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
const SSL_CIPHER *cipher = SSL_get_cipher_by_value(cipher_suite);
if (cipher == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_R_UNKNOWN_CIPHER_RETURNED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
return ssl_hs_error;
}
/* Check if the cipher is disabled. */
if ((cipher->algorithm_mkey & ssl->cert->mask_k) ||
(cipher->algorithm_auth & ssl->cert->mask_a) ||
SSL_CIPHER_get_min_version(cipher) > ssl3_protocol_version(ssl) ||
SSL_CIPHER_get_max_version(cipher) < ssl3_protocol_version(ssl) ||
!sk_SSL_CIPHER_find(ssl_get_ciphers_by_id(ssl), NULL, cipher)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CIPHER_RETURNED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
return ssl_hs_error;
}
ssl->session->cipher = cipher;
ssl->s3->tmp.new_cipher = cipher;
/* The PRF hash is now known. Set up the key schedule. */
static const uint8_t kZeroes[EVP_MAX_MD_SIZE] = {0};
size_t hash_len =
EVP_MD_size(ssl_get_handshake_digest(ssl_get_algorithm_prf(ssl)));
if (!tls13_init_key_schedule(ssl, kZeroes, hash_len)) {
return ssl_hs_error;
}
/* Resolve PSK and incorporate it into the secret. */
if (cipher->algorithm_auth == SSL_aPSK) {
/* TODO(davidben): Support PSK. */
OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
return ssl_hs_error;
} else if (!tls13_advance_key_schedule(ssl, kZeroes, hash_len)) {
return ssl_hs_error;
}
/* Resolve ECDHE and incorporate it into the secret. */
if (cipher->algorithm_mkey == SSL_kECDHE) {
if (!have_key_share) {
OPENSSL_PUT_ERROR(SSL, SSL_R_MISSING_KEY_SHARE);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_MISSING_EXTENSION);
return ssl_hs_error;
}
uint8_t *dhe_secret;
size_t dhe_secret_len;
uint8_t alert = SSL_AD_DECODE_ERROR;
if (!ext_key_share_parse_serverhello(ssl, &dhe_secret, &dhe_secret_len,
&alert, &key_share)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return ssl_hs_error;
}
int ok = tls13_advance_key_schedule(ssl, dhe_secret, dhe_secret_len);
OPENSSL_free(dhe_secret);
if (!ok) {
return ssl_hs_error;
}
} else {
if (have_key_share) {
OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNSUPPORTED_EXTENSION);
return ssl_hs_error;
}
if (!tls13_advance_key_schedule(ssl, kZeroes, hash_len)) {
return ssl_hs_error;
}
}
/* If there was no HelloRetryRequest, the version negotiation logic has
* already hashed the message. */
if (ssl->s3->hs->retry_group != 0 &&
!ssl->method->hash_current_message(ssl)) {
return ssl_hs_error;
}
if (!tls13_set_handshake_traffic(ssl)) {
return ssl_hs_error;
}
hs->state = state_process_encrypted_extensions;
return ssl_hs_read_message;
}
static enum ssl_hs_wait_t do_select_parameters(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
/* The short record header extension is incompatible with early data. */
if (ssl->s3->skip_early_data && ssl->s3->short_header) {
OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_EXTENSION);
return ssl_hs_error;
}
SSL_CLIENT_HELLO client_hello;
if (!ssl_client_hello_init(ssl, &client_hello, ssl->init_msg,
ssl->init_num)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
return ssl_hs_error;
}
/* Negotiate the cipher suite. */
ssl->s3->tmp.new_cipher = choose_tls13_cipher(ssl, &client_hello);
if (ssl->s3->tmp.new_cipher == NULL) {
OPENSSL_PUT_ERROR(SSL, SSL_R_NO_SHARED_CIPHER);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
return ssl_hs_error;
}
/* Decode the ticket if we agree on a PSK key exchange mode. */
uint8_t alert = SSL_AD_DECODE_ERROR;
SSL_SESSION *session = NULL;
CBS pre_shared_key, binders;
if (hs->accept_psk_mode &&
ssl_client_hello_get_extension(&client_hello, &pre_shared_key,
TLSEXT_TYPE_pre_shared_key)) {
/* Verify that the pre_shared_key extension is the last extension in
* ClientHello. */
if (CBS_data(&pre_shared_key) + CBS_len(&pre_shared_key) !=
client_hello.extensions + client_hello.extensions_len) {
OPENSSL_PUT_ERROR(SSL, SSL_R_PRE_SHARED_KEY_MUST_BE_LAST);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER);
return ssl_hs_error;
}
if (!ssl_ext_pre_shared_key_parse_clienthello(hs, &session, &binders,
&alert, &pre_shared_key)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return ssl_hs_error;
}
}
if (session != NULL &&
!ssl_session_is_resumable(ssl, session)) {
SSL_SESSION_free(session);
session = NULL;
}
/* Set up the new session, either using the original one as a template or
* creating a fresh one. */
if (session == NULL) {
if (!ssl_get_new_session(hs, 1 /* server */)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
ssl->s3->new_session->cipher = ssl->s3->tmp.new_cipher;
/* On new sessions, stash the SNI value in the session. */
if (hs->hostname != NULL) {
OPENSSL_free(ssl->s3->new_session->tlsext_hostname);
ssl->s3->new_session->tlsext_hostname = BUF_strdup(hs->hostname);
if (ssl->s3->new_session->tlsext_hostname == NULL) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
}
} else {
/* Check the PSK binder. */
if (!tls13_verify_psk_binder(ssl, session, &binders)) {
SSL_SESSION_free(session);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECRYPT_ERROR);
return ssl_hs_error;
}
/* Only authentication information carries over in TLS 1.3. */
ssl->s3->new_session = SSL_SESSION_dup(session, SSL_SESSION_DUP_AUTH_ONLY);
if (ssl->s3->new_session == NULL) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
ssl->s3->session_reused = 1;
SSL_SESSION_free(session);
/* Resumption incorporates fresh key material, so refresh the timeout. */
ssl_session_renew_timeout(ssl, ssl->s3->new_session,
ssl->initial_ctx->session_psk_dhe_timeout);
}
if (ssl->ctx->dos_protection_cb != NULL &&
ssl->ctx->dos_protection_cb(&client_hello) == 0) {
/* Connection rejected for DOS reasons. */
OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
/* HTTP/2 negotiation depends on the cipher suite, so ALPN negotiation was
* deferred. Complete it now. */
if (!ssl_negotiate_alpn(hs, &alert, &client_hello)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return ssl_hs_error;
}
/* The PRF hash is now known. Set up the key schedule and hash the
* ClientHello. */
size_t hash_len =
EVP_MD_size(ssl_get_handshake_digest(ssl_get_algorithm_prf(ssl)));
if (!tls13_init_key_schedule(hs) ||
!ssl_hash_current_message(ssl)) {
return ssl_hs_error;
}
/* Incorporate the PSK into the running secret. */
if (ssl->s3->session_reused) {
if (!tls13_advance_key_schedule(hs, ssl->s3->new_session->master_key,
ssl->s3->new_session->master_key_length)) {
return ssl_hs_error;
}
} else if (!tls13_advance_key_schedule(hs, kZeroes, hash_len)) {
return ssl_hs_error;
}
ssl->method->received_flight(ssl);
/* Resolve ECDHE and incorporate it into the secret. */
int need_retry;
if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
if (need_retry) {
hs->tls13_state = state_send_hello_retry_request;
return ssl_hs_ok;
}
return ssl_hs_error;
}
hs->tls13_state = state_send_server_hello;
return ssl_hs_ok;
}
static enum ssl_hs_wait_t do_select_session(SSL_HANDSHAKE *hs) {
SSL *const ssl = hs->ssl;
SSL_CLIENT_HELLO client_hello;
if (!ssl_client_hello_init(ssl, &client_hello, ssl->init_msg,
ssl->init_num)) {
OPENSSL_PUT_ERROR(SSL, SSL_R_CLIENTHELLO_PARSE_FAILED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR);
return ssl_hs_error;
}
uint8_t alert = SSL_AD_DECODE_ERROR;
SSL_SESSION *session = NULL;
switch (select_session(hs, &alert, &session, &ssl->s3->ticket_age_skew,
&client_hello)) {
case ssl_ticket_aead_ignore_ticket:
assert(session == NULL);
if (!ssl_get_new_session(hs, 1 /* server */)) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
break;
case ssl_ticket_aead_success:
/* Carry over authentication information from the previous handshake into
* a fresh session. */
hs->new_session = SSL_SESSION_dup(session, SSL_SESSION_DUP_AUTH_ONLY);
if (/* Early data must be acceptable for this ticket. */
ssl->cert->enable_early_data &&
session->ticket_max_early_data != 0 &&
/* The client must have offered early data. */
hs->early_data_offered &&
/* Channel ID is incompatible with 0-RTT. */
!ssl->s3->tlsext_channel_id_valid &&
/* The negotiated ALPN must match the one in the ticket. */
ssl->s3->alpn_selected_len == session->early_alpn_len &&
OPENSSL_memcmp(ssl->s3->alpn_selected, session->early_alpn,
ssl->s3->alpn_selected_len) == 0) {
ssl->early_data_accepted = 1;
}
SSL_SESSION_free(session);
if (hs->new_session == NULL) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
ssl->s3->session_reused = 1;
/* Resumption incorporates fresh key material, so refresh the timeout. */
ssl_session_renew_timeout(ssl, hs->new_session,
ssl->session_ctx->session_psk_dhe_timeout);
break;
case ssl_ticket_aead_error:
ssl3_send_alert(ssl, SSL3_AL_FATAL, alert);
return ssl_hs_error;
case ssl_ticket_aead_retry:
hs->tls13_state = state_select_session;
return ssl_hs_pending_ticket;
}
/* Record connection properties in the new session. */
hs->new_session->cipher = hs->new_cipher;
if (hs->hostname != NULL) {
OPENSSL_free(hs->new_session->tlsext_hostname);
hs->new_session->tlsext_hostname = BUF_strdup(hs->hostname);
if (hs->new_session->tlsext_hostname == NULL) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
}
/* Store the initial negotiated ALPN in the session. */
if (ssl->s3->alpn_selected != NULL) {
hs->new_session->early_alpn =
BUF_memdup(ssl->s3->alpn_selected, ssl->s3->alpn_selected_len);
if (hs->new_session->early_alpn == NULL) {
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
hs->new_session->early_alpn_len = ssl->s3->alpn_selected_len;
}
if (ssl->ctx->dos_protection_cb != NULL &&
ssl->ctx->dos_protection_cb(&client_hello) == 0) {
/* Connection rejected for DOS reasons. */
OPENSSL_PUT_ERROR(SSL, SSL_R_CONNECTION_REJECTED);
ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
return ssl_hs_error;
}
/* Incorporate the PSK into the running secret. */
if (ssl->s3->session_reused) {
if (!tls13_advance_key_schedule(hs, hs->new_session->master_key,
hs->new_session->master_key_length)) {
return ssl_hs_error;
}
} else if (!tls13_advance_key_schedule(hs, kZeroes, hs->hash_len)) {
return ssl_hs_error;
}
if (ssl->early_data_accepted) {
if (!tls13_derive_early_secrets(hs)) {
return ssl_hs_error;
}
} else if (hs->early_data_offered) {
ssl->s3->skip_early_data = 1;
}
ssl->method->received_flight(ssl);
/* Resolve ECDHE and incorporate it into the secret. */
int need_retry;
if (!resolve_ecdhe_secret(hs, &need_retry, &client_hello)) {
if (need_retry) {
ssl->early_data_accepted = 0;
ssl->s3->skip_early_data = 1;
hs->tls13_state = state_send_hello_retry_request;
return ssl_hs_ok;
}
return ssl_hs_error;
}
hs->tls13_state = state_send_server_hello;
return ssl_hs_ok;
}
