(Android™) Use Installed Cert on Windows for TLS Client Authentication

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

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    CkHttp http = new CkHttp();

    boolean success;

    //  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();
    boolean success = cert.LoadByCommonName("My ECA Medium Assurance Identity Certificate");
    if (success != true) {
        Log.i(TAG, 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) {
        Log.i(TAG, "A private key is needed for TLS client authentication.");
        Log.i(TAG, "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) {
        Log.i(TAG, 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.

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}