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Algebraic Techniques in Differential Cryptanalysis
Finally, our paper on algebraic techniques in differential cryptanalysis is available as pre-print. From the abstract:
“In this paper we propose a new cryptanalytic method against block ciphers, which combines both algebraic and statistical techniques. More specifically, we show how to use algebraic relations arising from differential characteristics to speed up and improve key-recovery differential attacks against block ciphers in some situations. To illustrate the new technique, we apply it to reduced round versions of the cipher PRESENT, an ultra lightweight block cipher proposed at CHES 2007, particularly suitable for deployment in RFID tags.”
Since the results of that paper rely on experimental data, we also publish the source code used to execute our experiments. I’m going to present this paper at SCC 2008, whichs schedule is now available, btw.
