RFC 5201

Host Identity Protocol, April 2008

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Obsoleted by:
RFC 7401
Updated by:
RFC 6253
R. Moskowitz
P. Nikander
P. Jokela, Ed.
T. Henderson
hip (int)

Cite this RFC: TXT  |  XML

DOI:  http://dx.doi.org/10.17487/RFC5201

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This memo specifies the details of the Host Identity Protocol (HIP). HIP allows consenting hosts to securely establish and maintain shared IP-layer state, allowing separation of the identifier and locator roles of IP addresses, thereby enabling continuity of communications across IP address changes. HIP is based on a Sigma-compliant Diffie- Hellman key exchange, using public key identifiers from a new Host Identity namespace for mutual peer authentication. The protocol is designed to be resistant to denial-of-service (DoS) and man-in-the- middle (MitM) attacks. When used together with another suitable security protocol, such as the Encapsulated Security Payload (ESP), it provides integrity protection and optional encryption for upper- layer protocols, such as TCP and UDP. This memo defines an Experimental Protocol for the Internet community.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

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