Java

Use Installed Cert on Windows for TLS Client Authentication

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Demonstrates how to use a certificate that has already been installed on a Windows PC for TLS client authentication. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    // On Windows, a pre-installed certificate can be loaded in a number of different ways.
    // This example loads by the common name:
    CkCert cert = new CkCert();
    success = cert.LoadByCommonName("My ECA Medium Assurance Identity Certificate");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Make sure this certificate has a private key available.  
    // It should be a private key such that when the certificate was installed, it was marked as "exportable"
    // so that authorized programs are able to access the private key.
    if (cert.HasPrivateKey() != true) {
        System.out.println("A private key is needed for TLS client authentication.");
        System.out.println("This certificate has no private key.");
        return;
        }

    // Set the certificate to be used for mutual TLS authentication
    // (i.e. sets the client-side certificate for two-way TLS authentication)
    success = http.SetSslClientCert(cert);
    if (success != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    // At this point, the HTTP object instance is setup with the client-side cert, and any SSL/TLS
    // connection will automatically use it if the server demands a client-side cert.
  }
}