Java tutorial
package org.bouncycastle.cert.jcajce; import java.security.cert.CertificateEncodingException; import java.security.cert.X509Certificate; import org.bouncycastle.asn1.x509.Certificate; import org.bouncycastle.cert.X509CertificateHolder; /** * JCA helper class for converting an X509Certificate into a X509CertificateHolder object. */ public class JcaX509CertificateHolder extends X509CertificateHolder { /** * Base constructor. * * @param cert certificate to be used a the source for the holder creation. * @throws CertificateEncodingException if there is a problem extracting the certificate information. */ public JcaX509CertificateHolder(X509Certificate cert) throws CertificateEncodingException { super(Certificate.getInstance(cert.getEncoded())); } }