import java.security.*;

import java.security.cert.*;

import java.io.*;

import java.util.*;



import com.pheox.jcapi.*;



public class ExportCert

{

    static public void main(String[] args)

    {

        try {

            export();

        } catch(Throwable t) {

            t.printStackTrace();

        }

    }



    static private void export()

        throws Exception

    {

        System.out.println("Export certificate to file cert.cer");



        Security.addProvider(new JCAPIProvider());

        KeyStore ks = KeyStore.getInstance("msks", "JCAPI");

        ks.load(null, null);



        //Get first certificate found.

        Enumeration aliases = ks.aliases();

        String alias = (String)aliases.nextElement();

        if(alias == null)

            throw new Exception("No certificate found.");

        X509Certificate cert = (X509Certificate)ks.getCertificate(alias);



        //Export/write certificate to file (X.509 ASN.1/DER).

        FileOutputStream fos = new FileOutputStream("cert.cer");

        try {

            fos.write(cert.getEncoded());

        } finally {

            fos.close();

        }



        System.out.println("Done!");

    }

}