Java

Socket TLS Mutual Authentication (Client-Side Certificate)

See more Socket/SSL/TLS Examples

This example demonstrates how to provide a client-side certificate, also known as "two-way authentication" or "mutual authentication" for servers that require a client certificate. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Socket;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Socket sock = new Socket();

        // Set the certificate to be used for mutual TLS authentication
        // (i.e. sets the client-side certificate for two-way TLS authentication)
        try {
            sock.setSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx", "pfxPassword");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Note: The certificate used for the client-side of TLS mutual authentication
        // must have the associated private key available. (.pfx/.p12 files typically store both
        // the certificate and associated private key.)

        // Establish the connection using the socket object (with client certificate authentication).
        boolean bTls = true;
        int port = 443;
        int maxWaitMs = 5000;
        try {
            sock.connect("www.example.com", port, bTls, maxWaitMs);
        } catch (ChilkatException e) {
            System.out.println("Connect Failure Error Code: " + sock.getConnectFailReason());
            System.out.println(e.getLastErrorText());
            return;
        }

        // At this point, the Socket object is connected and authenticated using the client-side cert

        // ...
        // ...
    }
}