The following is an example of how to instantiate an X.509 certificate: InputStream inStream = new FileInputStream(fileName-of-cert); CertificateFactory cf = CertificateFactory.getInstance(X.509); X509Certificate cert = (X509Certificate)cf.generateCertificate(inStream); inStream.close(); @author Hemma Prafullchandra @version 1.2733 @see Certificate @see CertificateFactory @see X509Extension