(Android™) Verify SSL Server Certificate

Demonstrates how to connect to an SSL server and verify its SSL certificate.

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.

    CkSocket socket = new CkSocket();

    boolean ssl = true;
    int maxWaitMillisec = 20000;

    // The SSL server hostname may be an IP address, a domain name,
    // or "localhost". 
    String sslServerHost;
    sslServerHost = "www.paypal.com";
    int sslServerPort = 443;

    // Connect to the SSL server:
    boolean success = socket.Connect(sslServerHost,sslServerPort,ssl,maxWaitMillisec);
    if (success != true) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    CkCert cert;

    boolean bExpired;
    boolean bRevoked;
    boolean bSignatureVerified;
    boolean bTrustedRoot;

    cert = socket.GetSslServerCert();
    if (socket.get_LastMethodSuccess() != false) {

        Log.i(TAG, "Server Certificate:");
        Log.i(TAG, "Distinguished Name: " + cert.subjectDN());
        Log.i(TAG, "Common Name: " + cert.subjectCN());
        Log.i(TAG, "Issuer Distinguished Name: " + cert.issuerDN());
        Log.i(TAG, "Issuer Common Name: " + cert.issuerCN());

        bExpired = cert.get_Expired();
        bRevoked = cert.get_Revoked();
        bSignatureVerified = cert.get_SignatureVerified();
        bTrustedRoot = cert.get_TrustedRoot();

        Log.i(TAG, "Expired: " + String.valueOf(bExpired));
        Log.i(TAG, "Revoked: " + String.valueOf(bRevoked));
        Log.i(TAG, "Signature Verified: " + String.valueOf(bSignatureVerified));
        Log.i(TAG, "Trusted Root: " + String.valueOf(bTrustedRoot));

        }

    // Close the connection with the server
    // Wait a max of 20 seconds (20000 millsec)
    success = socket.Close(20000);

  }

  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."
  }
}