(Android™) Load Certs from Java KeyStore into Trusted CA Roots

Demonstrates how to load a Java KeyStore containing CA root certificates that are to be trusted by the application. This can be done once at the beginning of an application, and then the trusted roots can be activated so that only these root CA certs are trusted by the application for any TLS connections.

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

    CkJavaKeyStore jks = new CkJavaKeyStore();
    jks.put_VerboseLogging(true);

    String password = "myPassword";
    boolean success = jks.LoadFile(password,"qa_data/jks/entrust_caCerts.jks");
    if (success != true) {
        Log.i(TAG, jks.lastErrorText());
        return;
        }

    CkTrustedRoots troots = new CkTrustedRoots();
    troots.put_VerboseLogging(true);

    success = troots.AddJavaKeyStore(jks);
    if (success != true) {
        Log.i(TAG, troots.lastErrorText());
        return;
        }

    int i = 0;
    int numCerts = troots.get_NumCerts();
    while ((i < numCerts)) {
        CkCert cacert = troots.GetCert(i);
        Log.i(TAG, String.valueOf(i) + ": " + cacert.subjectDN());

        i = i + 1;
        }

    // Activate this specific set of trusted roots.
    success = troots.Activate();
    if (success != true) {
        Log.i(TAG, troots.lastErrorText());
        return;
        }

    // Output:

    // 0: C=US, O=Entrust.net, OU=www.entrust.net/CPS incorp. by ref. (limits liab.), OU=(c) 1999 Entrust.net Limited, CN=Entrust.net Secure Server Certification Authority
    // 1: O=Entrust.net, OU=www.entrust.net/CPS_2048 incorp. by ref. (limits liab.), OU=(c) 1999 Entrust.net Limited, CN=Entrust.net Certification Authority (2048)
    // 2: C=US, O="Entrust, Inc.", OU=www.entrust.net/CPS is incorporated by reference, OU="(c) 2006 Entrust, Inc.", CN=Entrust Root Certification Authority

  }

  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."
  }
}