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Add auth mode check

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-10-30 14:13:19 +08:00
parent 2883219edb
commit def7ae4404
1 changed files with 24 additions and 0 deletions
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24
library/ssl_tls.c
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@ -1012,6 +1012,30 @@ static int ssl_conf_check(const mbedtls_ssl_context *ssl)
if( ret != 0 )
return( ret );
#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
/* RFC 8446 section 4.4.3
*
* If the verification fails, the receiver MUST terminate the handshake with
* a "decrypt_error" alert.
*
* If the client is configured as TLS 1.3 only with optional verify, return
* bad config.
*
*/
if( mbedtls_ssl_conf_tls13_ephemeral_enabled(
(mbedtls_ssl_context *)ssl ) &&
ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT &&
ssl->conf->max_tls_version == MBEDTLS_SSL_VERSION_TLS1_3 &&
ssl->conf->min_tls_version == MBEDTLS_SSL_VERSION_TLS1_3 &&
ssl->conf->authmode == MBEDTLS_SSL_VERIFY_OPTIONAL )
{
MBEDTLS_SSL_DEBUG_MSG(
1, ( "Optional verfiy auth mode "
"is not available for TLS 1.3 client" ) );
return( MBEDTLS_ERR_SSL_BAD_CONFIG );
}
#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
/* Space for further checks */
return( 0 );