throws GeneralSecurityException, IOException {
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    try (InputStream in = new FileInputStream(keystoreFile)) {
      keystore.load(in, password.toCharArray());
    }
    KeyManagerFactory keyManagerFactory =
        KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
    keyManagerFactory.init(keystore, password.toCharArray());

   * certificates.
   */
  private SSLSocketFactory defaultSslSocketFactory(X509TrustManager trustManager)
      throws NoSuchAlgorithmException, KeyManagementException {
    SSLContext sslContext = SSLContext.getInstance("TLS");
    sslContext.init(null, new TrustManager[] { trustManager }, null);

    return sslContext.getSocketFactory();
  }

  /** Returns a trust manager that trusts the VM's default certificate authorities. */

              "emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=\n" +
              "-----END CERTIFICATE-----";

      CertificateFactory cf = CertificateFactory.getInstance("X.509");
      Certificate isgCertificate = cf.generateCertificate(new ByteArrayInputStream(isgCert.getBytes("UTF-8")));

      HandshakeCertificates certificates = new HandshakeCertificates.Builder()