Delegated Path Discovery

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For the German parcel service DPD, see: Deutscher Paket Dienst

Delegated Path Discovery (DPD) is a method for querying a trusted server for information about a public key certificate.

DPD allows clients to obtain collated certificate information from a trusted DPD server. This information may then be used by the client to validate the subject certificate.

The requirements for DPD are described in RFC 3379.

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