Revocation checking methods list which is an ordered
list of certificate revocation checking methods to be
employed while verifying peer certificates issued by
the CA corresponding to this trust point entry.
The value of this object is a ordered list of one or
more 1-octet values, where each 1-octet value
corresponds to a method in the revocation checking method
enumeration:
none (1) - No revocation status checking needed;
instead consider the certificate as
not revoked.
crl (2) - Use CRL for checking the revocation
status of certificates.
ocsp (3) - Use OCSP for checking the revocation
status of certificates.
If 'none' occures in the list, it should be the last value.
The octets after the last value in the ordered list
should be zero octets.
The order in which the revocation checking methods
occur within the value of this object determines
the order the revocation checking methods are attempted
during the verification of a peer certificate.
The default value of this object (after row creation)
contains only the revocation checking method 'crl'.