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Paper 2002/159

Related-Key and Key-Collision Attacks Against RMAC

Tadayoshi Kohno

Abstract

In [JJV02] Jaulmes, Joux, and Valette propose a new randomized message authentication scheme, called RMAC, which NIST is currently in the process of standardizing [NIS02]. In this work we present several attacks against RMAC. The attacks are based on a new protocol-level related-key attack against RMAC and can be considered variants of Biham's key-collision attack [Bih02]. These attacks provide insights into the RMAC design. We believe that the protocol-level related-key attack is of independent interest.

Metadata
Available format(s)
PDF PS
Category
Cryptographic protocols
Publication info
Published elsewhere. Unknown where it was published
Keywords
RMACkey-collision attacksrelated-key attacks.
Contact author(s)
tkohno @ cs ucsd edu
History
2002-12-03: last of 4 revisions
2002-10-21: received
See all versions
Short URL
https://ia.cr/2002/159
License
Creative Commons Attribution
CC BY
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