안드로이드 HTTPS WebView 질문드립니다

public class NewSSLSocketFactory extends SSLSocketFactory {
    private SSLContext sslContext=SSLContext.getInstance("TLS");;
    private X509Certificate cert;
    private PrivateKey privateKey;
    public PrivateKey getPrivateKey() {
        return privateKey;
    }
    public X509Certificate getCert() {
        return cert;
    }
    private KeyStore setCert(){
        String skuCertBin ="-----BEGIN CERTIFICATE-----\n"+
                "MIIE/DCCA+SgAwIBAgIQUwJ6D9WOZsKmCXsEdk/waTANBgkqhkiG9w0BAQsFADBE\n"+
                "MQswCQYDVQQGEwJVUzEWMBQGA1UEChMNR2VvVHJ1c3QgSW5jLjEdMBsGA1UEAxMU\n"+
                "R2VvVHJ1c3QgU1NMIENBIC0gRzMwHhcNMTUwNDE0MDAwMDAwWhcNMTcwNDEzMjM1\n"+
                "OTU5WjB+MQswCQYDVQQGEwJLUjEOMAwGA1UECBMFU2VvdWwxFDASBgNVBAcUC1Nl\n"+
                "b25nYnVrLWd1MR0wGwYDVQQKFBRTRU9LWUVPTkcgVU5JVkVSU0lUWTERMA8GA1UE\n"+
                "CxQIRGV2IFRlYW0xFzAVBgNVBAMUDiouc2t1bml2LmFjLmtyMIIBIjANBgkqhkiG\n"+
                "9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzIDsm/zYGvJ4CLBJDhOd5w6X93InwxZVCp9C\n"+
                "9JHXISNQi/cPG1qJZDt8uyKR+FJ8VsidMHm3oO4gsXr69hix1zNphJ7W9kFEV0kj\n"+
                "gLxoA5LgNeByf3OCbYNB1WMW+tF94i6/CnTVI42V3MgJewyJ7GOtlwuOl+vppw6a\n"+
                "Y6zJaKdcxpw2qkJXgJrT18fg/gC6nSUprWs676DxZvcO1SvvAhuO7nd6iSUEySdZ\n"+
                "W5vE5sogUXbGiaQD+/reLgufcunX1y+ZQAqoNJt85LSs4v5J5sLLuv1/mpDQEyBo\n"+
                "c6/WdAnXytYYQVV4fz95XujWZPMsi3lT2spO+kYAJo23bXn1OQIDAQABo4IBrjCC\n"+
                "AaowJwYDVR0RBCAwHoIOKi5za3VuaXYuYWMua3KCDHNrdW5pdi5hYy5rcjAJBgNV\n"+
                "HRMEAjAAMA4GA1UdDwEB/wQEAwIFoDArBgNVHR8EJDAiMCCgHqAchhpodHRwOi8v\n"+
                "Z24uc3ltY2IuY29tL2duLmNybDCBnQYDVR0gBIGVMIGSMIGPBgZngQwBAgIwgYQw\n"+
                "PwYIKwYBBQUHAgEWM2h0dHBzOi8vd3d3Lmdlb3RydXN0LmNvbS9yZXNvdXJjZXMv\n"+
                "cmVwb3NpdG9yeS9sZWdhbDBBBggrBgEFBQcCAjA1DDNodHRwczovL3d3dy5nZW90\n"+
                "cnVzdC5jb20vcmVzb3VyY2VzL3JlcG9zaXRvcnkvbGVnYWwwHQYDVR0lBBYwFAYI\n"+
                "KwYBBQUHAwEGCCsGAQUFBwMCMB8GA1UdIwQYMBaAFNJv95b0hT9yPDB9I9qFeJuj\n"+
                "fFp8MFcGCCsGAQUFBwEBBEswSTAfBggrBgEFBQcwAYYTaHR0cDovL2duLnN5bWNk\n"+
                "LmNvbTAmBggrBgEFBQcwAoYaaHR0cDovL2duLnN5bWNiLmNvbS9nbi5jcnQwDQYJ\n"+
                "KoZIhvcNAQELBQADggEBAMbyjW60yINSiCgt+4OVC3Md3riCg0NWfAb02zs0KdgN\n"+
                "px7qtTQkqb5WhbiDauU9RjicXShT3noYnkvfFuagknWbbSl/ks3OvdKh/VXQEZjM\n"+
                "PGcgsjDyg8EiGOXRjmG+q7UmkgS6YjBS9b6QC93J0rHKe3DqNHl7c+I917rJiAbh\n"+
                "twL561RhibAiQybRUqO5CoAukMga6u1ozZfGwWs3KxtAcyPHi+cCkLSGbrzvGx0n\n"+
                "kOIjonO8GIEJX1FPSeBh4X2amK4f7IluvfZ7l9zLVMw9OV3Dhmju68/gNBr4X8AU\n"+
                "h1V4RRxYnl7UqZu710ps4f3KPPaFgNDBk5q9VOGkE5Y=\n"+
                "-----END CERTIFICATE-----";
        KeyStore trustStore=null;
        try {
            ByteArrayInputStream derInputStream = new ByteArrayInputStream(skuCertBin.getBytes());
            CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
            cert = (X509Certificate) certificateFactory.generateCertificate(derInputStream);
            String alias = cert.getSubjectX500Principal().getName();
 
            trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
            trustStore.load(null, null);
            trustStore.setCertificateEntry(alias, cert);
 
            Key key = trustStore.getKey(alias, null);
            if ( key instanceof PrivateKey)
                privateKey = (PrivateKey)key;
 
        } catch (CertificateException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (UnrecoverableKeyException e) {
            e.printStackTrace();
        }
        return trustStore;
    }
    public NewSSLSocketFactory() throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {
        super();
        KeyStore trustStore = setCert();
        TrustManagerFactory tmf = TrustManagerFactory.getInstance("X509");
        tmf.init(trustStore);
        sslContext.init(null, tmf.getTrustManagers(), null);
    }
}

@Override
            public void onReceivedClientCertRequest(WebView view, ClientCertRequest request) {
                Log.d("WebViewCheck", "onReceivedClientCertRequest Call");
                request.proceed(privateKey, cert);
            }