Simultaneous attacks in differential cryptanalysis (getting more pairs per encryption)
One aspect of differential cryptanalysis that appears to have been largely overlooked is the use of several differences to attack a cipher simultaneously. While the use of quartets and octets have been briefly described by Biham and Shamir , this was not carried to its logical conclusion — namely, how many different attacks can you use and still get an improvement. The issues involved are briefly covered here.
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- 1.E. Biham and A. Shamir, “Differential Cryptanalysis of DES-like Cryptosystems,” Journal of Cryptology, vol. 4, no. 1, 1991.Google Scholar