How can I make Android Volley perform HTTPS request, using a certificate self-signed by an Unknown CA?

i have implemented https by creating new requestQueue in my volley class by the following code

public RequestQueue getRequestQueue() {
    if (mRequestQueue == null) {
        mRequestQueue = Volley.newRequestQueue(getApplicationContext(), new HurlStack(null, newSslSocketFactory()));


    return mRequestQueue;

private SSLSocketFactory newSslSocketFactory() {
    try {
        // Get an instance of the Bouncy Castle KeyStore format
        KeyStore trusted = KeyStore.getInstance("BKS");
        // Get the raw resource, which contains the keystore with
        // your trusted certificates (root and any intermediate certs)
        InputStream in = getApplicationContext().getResources().openRawResource(R.raw.keystore);
        try {
            // Initialize the keystore with the provided trusted certificates
            // Provide the password of the keystore
            trusted.load(in, KEYSTORE_PASSWORD);
        } finally {

        String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);

        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, tmf.getTrustManagers(), null);

        SSLSocketFactory sf = context.getSocketFactory();
        return sf;
    } catch (Exception e) {
        throw new AssertionError(e);

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