2004-05-05 2004-07-22 IETF Standards Action This is the official IANA registry of Proxy Certificate Policy Languages that may be contained in X.509 Proxy Certificates as defined in . Authors of additional policy languages are encouraged to publicly document their policy language and list it in this registry. Each policy language is identified by an OID. The reference must define both the syntax and the semantics of the policy language. 1.3.6.1.5.5.7.21.1 id-ppl-inheritALL 1.3.6.1.5.5.7.21.2 id-ppl-independent