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CRYPTO
2005
Springer

A Practical Attack on a Braid Group Based Cryptographic Protocol

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A Practical Attack on a Braid Group Based Cryptographic Protocol
In this paper we present a practical heuristic attack on the Ko, Lee et al. key exchange protocol introduced at Crypto 2000 [10]. One of the ideas behind our attack is using Dehornoy’s handle reduction method as a counter measure to diffusion provided by the Garside normal form, and as a tool for simplifying braid words. Another idea employed in our attack is solving the decomposition problem in a braid group rather than the conjugacy search problem.
Alexei G. Myasnikov, Vladimir Shpilrain, Alexander
Added 26 Jun 2010
Updated 26 Jun 2010
Type Conference
Year 2005
Where CRYPTO
Authors Alexei G. Myasnikov, Vladimir Shpilrain, Alexander Ushakov
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