Basic Socket Interface Extensions for the Host Identity Protocol (HIP)

This document defines extensions to the current sockets API for the Host Identity Protocol (HIP). The extensions focus on the use of public-key-based identifiers discovered via DNS resolution, but also define interfaces for manual bindings between Host Identity Tags (HITs) and locators. With the extensions, the application can also support more relaxed security models where communication can be nonHIP-based, according to local policies. The extensions in this document are experimental and provide basic tools for further experimentation with policies.