Cryptanalysis of the Shpilrain-Ushakov Protocol in Thompson's Group

Details Cryptanalysis of the Shpilrain-Ushakov Protocol in Thompson's Group Cryptanalysis of the Shpilrain-Ushakov Protocol in Thompson's Group

2006-07-07

arxiv.org/abs/math/0607184v2

Journal of Cryptology 21(3) (2008) 458--468

Mathematics

Group Theory

12 pages, 4 figures; final version

Scientific paper

This paper shows that an eavesdropper can always recover efficiently the
private key of one of the two parts of the public key cryptography protocol
introduced by Shpilrain and Ushakov in [9]. Thus an eavesdropper can always
recover the shared secret key, making the protocol insecure.

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