private String getName(X509Certificate certificate) {

        try {

            String dn = certificate.getSubjectX500Principal().getName();

            if ("dn".equalsIgnoreCase(m_nameMatchPolicy)) {

                return dn;

            }



            LdapName ldapDN = new LdapName(dn);

            for (Rdn rdn : ldapDN.getRdns()) {

                if (m_nameMatchPolicy.equalsIgnoreCase(rdn.getType())) {

                    return (String) rdn.getValue();

                }

            }

        }

        catch (InvalidNameException e) {

        }

        return null;

    }