IETF内のエリア Apprication Area _ General Area _ Internet Area _ Operations and Management Area _ Routing Area _ Security Area _ Transport Area _ User Service Area _
セキュリティエリア _ An Open Specification for Pretty Good Privacy (openpgp) Authenticated Firewall Traversal (aft) Common Authentication Technology (cat) Domain Name System Security (dnssec) IP Security Protocol (ipsec) One Time Password Authentication (otp) Public-Key Infrastructure (X. 509) (pkix) S/MIME Mail Security (smime) Secure Shell (secsh) Simple Public Key Infrastructure (spki) Transport Layer Security (tls) _ Web Transaction Security (wts) _ _ _ _ _
CAインフラ(PKIX) CA End Entity Operational transactions /Management transactions RA CA Cert publish Cert, CRL Publish Cert / CRL Repository
draft-kikuchi-web-cert-repository _ HTTPベースのCA Management Protocol を提案 _ PA間についてはCA階層を利用した2つの 通信方式を提案 _ ICAP 2. x では改良を加え実装し、実験中 1 PA 2 3 4 PA 1 PA target PA PA 4 3 2 target PA