RFC 4418 on UMAC: Message Authentication Code using Universal Hashing

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        RFC 4418

        Title:      UMAC: Message Authentication Code using 
                    Universal Hashing 
        Author:     T. Krovetz,  Ed.
        Status:     Informational
        Date:       March 2006
        Mailbox:    [e-mail]
        Pages:      27
        Characters: 51304
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-krovetz-umac-07.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc4418.txt

This specification describes how to generate an authentication tag
using the UMAC message authentication algorithm.  UMAC is designed
to be very fast to compute in software on contemporary
uniprocessors.  Measured speeds are as low as one cycle per
byte.  UMAC relies on addition of
32-bit and 64-bit numbers and multiplication of 32-bit numbers,
operations well-supported by contemporary machines.

To generate the authentication tag on a given message, a "universal" hash
function is applied to the message and key to produce a short,
fixed-length hash value, and this hash value is then xor'ed with a
key-derived pseudorandom pad.  UMAC enjoys a rigorous security
analysis, and its only internal "cryptographic" component is a block
cipher used to generate the pseudorandom pads and internal key
material.  This memo provides information for the Internet community.


INFORMATIONAL: This memo provides information for the Internet community. 
It does not specify an Internet standard of any kind. Distribution
of this memo is unlimited.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

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