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Change the order of key_exchange determine

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-07-22 21:49:53 +08:00
parent ba9b6e9e53
commit ce6ed7076a
1 changed files with 10 additions and 10 deletions
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20
library/ssl_tls13_server.c
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@ -775,20 +775,13 @@ static int ssl_tls13_determine_key_exchange_mode( mbedtls_ssl_context *ssl )
* The PSK-based key exchanges may additionally be used with 0-RTT.
*
* Our built-in order of preference is
* 1 ) Plain PSK Mode ( psk )
* 2 ) (EC)DHE-PSK Mode ( psk_ephemeral )
* 3 ) Certificate Mode ( ephemeral )
* 1 ) (EC)DHE-PSK Mode ( psk_ephemeral )
* 2 ) Certificate Mode ( ephemeral )
* 3 ) Plain PSK Mode ( psk )
*/
ssl->handshake->key_exchange_mode = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_NONE;
if( ssl_tls13_check_psk_key_exchange( ssl ) )
{
ssl->handshake->key_exchange_mode =
MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
MBEDTLS_SSL_DEBUG_MSG( 2, ( "key exchange mode: psk" ) );
}
else
if( ssl_tls13_check_psk_ephemeral_key_exchange( ssl ) )
{
ssl->handshake->key_exchange_mode =
@ -803,6 +796,13 @@ static int ssl_tls13_determine_key_exchange_mode( mbedtls_ssl_context *ssl )
MBEDTLS_SSL_DEBUG_MSG( 2, ( "key exchange mode: ephemeral" ) );
}
else
if( ssl_tls13_check_psk_key_exchange( ssl ) )
{
ssl->handshake->key_exchange_mode =
MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
MBEDTLS_SSL_DEBUG_MSG( 2, ( "key exchange mode: psk" ) );
}
else
{
MBEDTLS_SSL_DEBUG_MSG(
1,