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A PKI in support of secure Internet routing was first proposed in and refined in later papers. In this "Resource" PKI (RPKI) the resources managed are IP address allocations and Autonomous System number assignments. In a typical PKI the validation problem for each relying party is fairly simple in principle, and is well defined in the standards, e.g. RFC 3280 . The RPKI presents a very different challenge for relying parties with regard to efficient certificate validation. In the RPKI every relying party needs to validate every certificate at fairly frequent intervals (e.g., daily). In addition, certificates on the validation path may be acquired from multiple repositories in an arbitrary order.
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