This class represents each certificate in the CRL.
Use this class to manage each concrete certificate in the CRL.
The following paragraph is taken from RFC 2459 (Housley, et. al.), part 18.104.22.168:
«The revoked certificates are named by their serial numbers. Certificates revoked by the CA are uniquely identified by the certificate serial number. The date on which the revocation occurred is specified.»
Additional information about revocated certificate may be supplied in Extensions