2 * Copyright 2018 Intel Corporation, Inc
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
25 var tlsConfig *tls.Config
27 // GetTLSConfig initializes a tlsConfig using the CA's certificate
28 // This config is then used to enable the server for mutual TLS
29 func GetTLSConfig(caCertFile string) (*tls.Config, error) {
30 // Initialize tlsConfig once
32 caCert, err := ioutil.ReadFile(caCertFile)
38 caCertPool := x509.NewCertPool()
39 caCertPool.AppendCertsFromPEM(caCert)
41 tlsConfig = &tls.Config{
42 ClientAuth: tls.RequireAndVerifyClientCert,
43 ClientCAs: caCertPool,
44 MinVersion: tls.VersionTLS12,
46 tlsConfig.BuildNameToCertificate()