For user certificates, each organization attains certificates from an approved, shared service provider, as required by OMB policy. For federal agencies operating a legacy public key infrastructure cross-certified with the Federal Bridge Certification Authority at medium assurance or higher, this Certification Authority will suffice. This requirement focuses on certificates with a visibility external to the information system and does not include certificates related to internal system operations, for example, application-specific time services. This requirement is applicable to network device management and is not applicable to the routing function. |