Hash Based Addresses (HBA)

Document Type Expired Internet-Draft (multi6 WG)
Last updated 2004-12-27
Stream IETF
Intended RFC status (None)
Expired & archived
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo describes a mechanism to provide a secure binding between the multiple addresses with different prefixes available to a host within a multihomed site. The main idea is that information about the multiple prefixes is included within the addresses themselves. This is achieved by generating the interface identifiers of the addresses of a host as hashes of the available prefixes and a random number. Then, the multiple addresses are generated by prepending the different prefixes to the generated interface identifiers. The result is a set of addresses, called Hash Based Addresses (HBAs), that are inherently bound.


Marcelo Bagnulo (marcelo@it.uc3m.es)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)