Requirements on Fast Message Authentication Codes

Document Type Expired Internet-Draft (cfrg RG)
Last updated 2008-02-22
Stream IRTF
Intended RFC status (None)
Expired & archived
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Stream IRTF state (None)
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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This Internet-Draft is no longer active.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 outlines requirements guiding the development of a fast Message Authentication Code (MAC) algorithm suitable for use with many IETF protocols, but in particular routing protocols that use a MAC for packet authentication. It is widely conjectured that secure MACs that are fast in software are possible, and many interesting MACs have appeared in the literature. Nevertheless, none of these MACs have seen broad adoption, and none are a good match for the routing protocol case. We hope that this memo brings together MAC designers and MAC users for a fruitful discussion.


David McGrew (
Brian Weis (

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