<p>Abstract class for a revoked certificate in a CRL. This class is for each entry in the <code>revokedCertificates</code>, so it deals with the inner <em>SEQUENCE</em>. The ASN.1 definition for this is: <pre> revokedCertificates SEQUENCE OF SEQUENCE { userCertificate CertificateSerialNumber, revocationDate ChoiceOfTime, crlEntryExtensions Extensions OPTIONAL -- if present, must be v2 } OPTIONAL