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Revocation in WebPKI

Revocation in WebPKI. Phill Hallam -Baker Comodo. Standards intersection. PKIX. OTHER. PKIX but not RFC5280. Semantics of Revocation Reasons Says what tag to use Not what tag means or when to use it [X.509 spec has definitions]. Servers. Is OCSP stapling supported?

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Revocation in WebPKI

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  1. Revocation in WebPKI PhillHallam-Baker Comodo

  2. Standards intersection PKIX OTHER

  3. PKIX but not RFC5280 • Semantics of Revocation Reasons • Says what tag to use • Not what tag means or when to use it • [X.509 spec has definitions]

  4. Servers • Is OCSP stapling supported? • Yes (Apache, IIS, LiteSpeed, ngnix) • [Is OCSP stapling on by default?] • [Does server check cert status regularly?] • [Are frequent certificate updates supported?]

  5. Clients • Supported Revocation Checking Mechanisms • CRL / OCSP? • User Experience for Certificate Status Invalid? • User Experience for Certificate Status Valid? • What sources are trusted to sign CRLs or OCSP responses? • Does this vary for DV/EV?

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