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TLS 1.3: Add selected key exchange mode field

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Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron 2022-07-20 16:44:00 +02:00
parent 7f9ccfeccc
commit 853854958f
1 changed files with 25 additions and 1 deletions
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26
library/ssl_misc.h
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@ -611,7 +611,8 @@ struct mbedtls_ssl_handshake_params
* Handshake specific crypto variables
*/
#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
int tls13_kex_modes; /*!< key exchange modes for TLS 1.3 */
uint8_t key_exchange_mode; /*!< Selected key exchange mode */
uint8_t tls13_kex_modes; /*!< key exchange modes for TLS 1.3 */
/** Number of HelloRetryRequest messages received/sent from/to the server. */
int hello_retry_request_count;
@ -1816,6 +1817,29 @@ static inline int mbedtls_ssl_tls13_some_psk_enabled( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL ) );
}
/*
* Helper functions to check the selected key exchange mode.
*/
static inline int mbedtls_ssl_tls13_key_exchange_mode_check(
mbedtls_ssl_context *ssl, int kex_mask )
{
return( ( ssl->handshake->key_exchange_mode & kex_mask ) != 0 );
}
static inline int mbedtls_ssl_tls13_key_exchange_mode_with_psk(
mbedtls_ssl_context *ssl )
{
return( mbedtls_ssl_tls13_key_exchange_mode_check( ssl,
MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL ) );
}
static inline int mbedtls_ssl_tls13_key_exchange_mode_with_ephemeral(
mbedtls_ssl_context *ssl )
{
return( mbedtls_ssl_tls13_key_exchange_mode_check( ssl,
MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ALL ) );
}
/*
* Fetch TLS 1.3 handshake message header
*/