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.
26 var tlsConfig *tls.Config
28 // GetTLSConfig initializes a tlsConfig using the CA's certificate
29 // This config is then used to enable the server for mutual TLS
30 func GetTLSConfig(caCertFile string) *tls.Config {
31 // Initialize tlsConfig once
33 caCert, err := ioutil.ReadFile(caCertFile)
36 log.Fatal("Error reading CA Certificate")
40 caCertPool := x509.NewCertPool()
41 caCertPool.AppendCertsFromPEM(caCert)
43 tlsConfig = &tls.Config{
44 ClientAuth: tls.RequireAndVerifyClientCert,
45 ClientCAs: caCertPool,
46 MinVersion: tls.VersionTLS12,
48 tlsConfig.BuildNameToCertificate()