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tls13: server: parse pre_shared_key only when some psk is selectable

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Signed-off-by: Pengyu Lv <pengyu.lv@arm.com>
This commit is contained in:
Pengyu Lv 2023-10-30 15:26:26 +08:00
parent 7b711710b2
commit cfb23b8090
1 changed files with 2 additions and 3 deletions
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5
library/ssl_tls13_server.c
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@ -1728,9 +1728,8 @@ static int ssl_tls13_parse_client_hello(mbedtls_ssl_context *ssl,
* - The content up to but excluding the PSK extension, if present.
*/
/* If we've settled on a PSK-based exchange, parse PSK identity ext */
if (mbedtls_ssl_tls13_some_psk_enabled(ssl) &&
mbedtls_ssl_conf_tls13_some_psk_enabled(ssl) &&
(handshake->received_extensions & MBEDTLS_SSL_EXT_MASK(PRE_SHARED_KEY))) {
if (ssl_tls13_check_psk_key_exchange(ssl) ||
ssl_tls13_check_psk_ephemeral_key_exchange(ssl)) {
ret = handshake->update_checksum(ssl, buf,
pre_shared_key_ext - buf);
if (0 != ret) {