| ISIS-MTT PROFILE: The responder may include this extension in a response to
send the hash of the requested certificate to the responder. This hash is
cryptographically bound to the certificate and serves as evidence that the
certificate is known to the responder (i.e. it has been issued and is present
in the directory). Hence, this extension is a means to provide a positive
statement of availability as described in T8.[8]. As explained in T13.[1],
clients may rely on this information to be able to validate signatures after
the expiry of the corresponding certificate. Hence, clients MUST support this
extension. If a positive statement of availability is to be delivered, this
extension syntax and OID MUST be used.
CertHash ::= SEQUENCE {
hashAlgorithm AlgorithmIdentifier,
certificateHash OCTET STRING
}
|