Verify SSL Server Certificate

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

Download Chilkat Java Library

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[])
  {
    CkSocket socket = new CkSocket();

    boolean success;
    success = socket.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println("Failed to unlock component");
        return;
    }

    boolean ssl;
    ssl = true;
    int maxWaitMillisec;
    maxWaitMillisec = 20000;

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

    //  Connect to the SSL server:
    success = socket.Connect(sslServerHost,sslServerPort,ssl,maxWaitMillisec);
    if (success != true) {
        System.out.println(socket.lastErrorText());
        return;
    }

    CkCert cert;

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

    cert = socket.GetSslServerCert();
    if (!(cert == null )) {

        System.out.println("Server Certificate:");
        System.out.println("Distinguished Name: "
             + cert.subjectDN());
        System.out.println("Common Name: " + cert.subjectCN());
        System.out.println("Issuer Distinguished Name: "
             + cert.issuerDN());
        System.out.println("Issuer Common Name: "
             + cert.issuerCN());

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

        System.out.println("Expired: " + bExpired);
        System.out.println("Revoked: " + bRevoked);
        System.out.println("Signature Verified: "
             + bSignatureVerified);
        System.out.println("Trusted Root: " + bTrustedRoot);

    }

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


  }
}