Custom SSLSocketFactory Implementation to enable tls 1.1 and tls 1.2 for android 4.1 (16+)

TLSSocketFactory.java

package net.cogindo.ssl;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;

/**
 * @author fkrauthan
 */
public class TLSSocketFactory extends SSLSocketFactory {

    private SSLSocketFactory internalSSLSocketFactory;

    public TLSSocketFactory() throws KeyManagementException, NoSuchAlgorithmException {
        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, null, null);
        internalSSLSocketFactory = context.getSocketFactory();
    }

    @Override
    public String[] getDefaultCipherSuites() {
        return internalSSLSocketFactory.getDefaultCipherSuites();
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return internalSSLSocketFactory.getSupportedCipherSuites();
    }
    
    @Override
    public Socket createSocket() throws IOException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket());
    }

    @Override
    public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(s, host, port, autoClose));
    }

    @Override
    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
    }

    @Override
    public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port, localHost, localPort));
    }

    @Override
    public Socket createSocket(InetAddress host, int port) throws IOException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
    }

    @Override
    public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(address, port, localAddress, localPort));
    }

    private Socket enableTLSOnSocket(Socket socket) {
        if(socket != null && (socket instanceof SSLSocket)) {
            ((SSLSocket)socket).setEnabledProtocols(new String[] {"TLSv1.1", "TLSv1.2"});
        }
        return socket;
    }
}

See the blog post to this code: http://blog.dev-area.net/2015/08/13/android-4-1-enable-tls-1-1-and-tls-1-2/

Hi @fkrauthan,

I face this issues(android enable tls).But i can't solve this .I am try to implement your example.But can't understand how i will add this code
http://imgur.com/HQZ4XRo

`public class SSLSocketFactoryEx extends SSLSocketFactory {
SSLContext sslContext = SSLContext.getInstance("TLS");

public SSLSocketFactoryEx(KeyStore truststore)
        throws NoSuchAlgorithmException, KeyManagementException,
        KeyStoreException, UnrecoverableKeyException {
    super(truststore);

    TrustManager tm = new X509TrustManager() {

        @Override
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        @Override
        public void checkClientTrusted(
                java.security.cert.X509Certificate[] chain, String authType)
                throws java.security.cert.CertificateException {

        }

        @Override
        public void checkServerTrusted(
                java.security.cert.X509Certificate[] chain, String authType)
                throws java.security.cert.CertificateException {

        }
    };

    sslContext.init(null, new TrustManager[]{tm}, null);
}

@Override
public Socket createSocket(Socket socket, String host, int port,
        boolean autoClose) throws IOException, UnknownHostException {
    return sslContext.getSocketFactory().createSocket(socket, host, port,
            autoClose);
}

@Override
public Socket createSocket() throws IOException {
    return sslContext.getSocketFactory().createSocket();
}

}
`

Prosanto, have you made any progress here. You're starting out way ahead of me. Can you send me or point me to any directions on how to add code to a phone. Can this sort of testing be done on a emulator? We're trying to restrict our web server to TLS v1.2 or better and it's breaking the mail client on Android 4 phones.
mtcstle

Hi @fkrauthan,
Can I use your code in my commercial app?
Please let me know how I can use the code for commercial distribution.
Thanks.

SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
TrustManager[] trustManagers = new TrustManager[] { new TrustManagerManipulator() };
sslContext.init(null, trustManagers, new SecureRandom());
SSLSocketFactory noSSLv3Factory = new TLSSocketFactory(sslContext.getSocketFactory());
urlConnection.setSSLSocketFactory(noSSLv3Factory);
https://github.com/IKANOW/Infinit.e/blob/master/core/infinit.e.data_model/src/com/ikanow/infinit/e/data_model/utils/TrustManagerManipulator.java

thanks, this code works for me but now Google Play Store rejected my application due to Malicious Behavior. Before adding this code my application uploaded successfully on Play Store. So, Please provide another solution.

@SahilKashyap did you get another way of doing it, since your app was rejected by play store? I need to enable TLS 1.2 support for my apps having API 16+

How to implement these SSLSocketFactory to webview in android?

You maniac, this code solves my issue EXACTLY. Thank you!!!

Works on API 19! You are a genius!

for retrofit.. please check this https://gist.github.com/Kishanjvaghela/3eb249e6bd52ba6b2b858af674fc7c3d