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Add ciphersuite_info check

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return null if no valid ciphersuite info

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-08-23 17:57:02 +08:00
parent 29d9faa468
commit dd1bef788e
1 changed files with 21 additions and 9 deletions
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30
library/ssl_tls13_server.c
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@ -188,6 +188,24 @@ static int ssl_tls13_offered_psks_check_binder_match( mbedtls_ssl_context *ssl,
return( SSL_TLS1_3_OFFERED_PSK_NOT_MATCH );
}
static const mbedtls_ssl_ciphersuite_t *ssl_tls13_get_ciphersuite_info_by_id(
mbedtls_ssl_context *ssl,
uint16_t cipher_suite )
{
const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
if( ! mbedtls_ssl_tls13_cipher_suite_is_offered( ssl, cipher_suite ) )
return( NULL );
ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( cipher_suite );
if( ( mbedtls_ssl_validate_ciphersuite( ssl, ciphersuite_info,
ssl->tls_version,
ssl->tls_version ) != 0 ) )
{
return( NULL );
}
return( ciphersuite_info );
}
MBEDTLS_CHECK_RETURN_CRITICAL
static int ssl_tls13_psk_external_check_ciphersuites( mbedtls_ssl_context *ssl,
const unsigned char *buf,
@ -1136,17 +1154,11 @@ static int ssl_tls13_parse_client_hello( mbedtls_ssl_context *ssl,
MBEDTLS_SSL_CHK_BUF_READ_PTR( p, cipher_suites_end, 2 );
cipher_suite = MBEDTLS_GET_UINT16_BE( p, 0 );
if( ! mbedtls_ssl_tls13_cipher_suite_is_offered( ssl, cipher_suite ) )
ciphersuite_info = ssl_tls13_get_ciphersuite_info_by_id(
ssl,cipher_suite );
if( ciphersuite_info == NULL )
continue;
ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( cipher_suite );
if( ( mbedtls_ssl_validate_ciphersuite(
ssl, ciphersuite_info, ssl->tls_version,
ssl->tls_version ) != 0 ) )
{
continue;
}
ssl->session_negotiate->ciphersuite = cipher_suite;
ssl->handshake->ciphersuite_info = ciphersuite_info;
MBEDTLS_SSL_DEBUG_MSG( 2, ( "selected ciphersuite: %04x - %s",