A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : OCSP Extensions to IKEv2
Author(s) : M. Myers, H. Tschofenig
Filename : draft-myers-ikev2-ocsp-02.txt
Pages : 14
Date : 2006-6-29
While IKEv2 supports public key based authentication (PKI), the
corresponding use of in-band CRLs is problematic due to unbounded CRL
size. The size of an OCSP response is however well-bounded and
small. This document defines two extensions to IKEv2 which enable
the use of OCSP for in-band signaling of certificate revocation
status. Two new content encodings are defined for use in the CERTREQ
and CERT payloads: OCSP Responder Hash and OCSP Response. An OCSP
Responder Hash CERTREQ payload triggers transmission of an OCSP
Response CERT payload.
When certificates are used with IKEv2, the communicating peers need a
mechanism to determine the revocation status of the peer's
certificate. OCSP is one such mechanism. This document applies when
OCSP is desired and security policy prevents one of the IKEv2 peers
from accessing the relevant OCSP responder directly. Firewalls are
often deployed in a manner that prevents such access by IKEv2 peers
outside of an enterprise network.
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