Cryptology ePrint Archive: Report 2006/094

Cryptanalysis of the MEM Mode of Operation

Peng Wang and Dengguo Feng and Wenling Wu

Abstract: The MEM mode is a nonce-based enciphering mode of operation proposed by Chakraborty and Sarkar, which was claimed to be secure against symmetric nonce respecting adversaries. We show that this is not correct by using two very simple attcks. One attack need one decryption and one decryption queries, and the other only need one encryption query.

Category / Keywords: secret-key cryptography /

Date: received 9 Mar 2006

Contact author: wp at is ac cn

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Version: 20060309:151313 (All versions of this report)

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