Differential cryptanalysis is based on distinguishers, any attack should prove that the events that triggers the analysis has not the same probability for the cipher than for a random function. In particular, the composition of differential for successive parts of a cipher should be done very carefully to lead to an attack.
This revised version of the paper includes the exact computations of some probabilities and repairs the attack of the first half of Skipjack.
Category / Keywords: secret-key cryptography / block ciphers, cryptanalysis Publication Info: FSE'01 proceedings, LNCS, Springer, 2001. Date: received 9 May 2001 Contact author: Louis Granboulan at ens fr Available formats: Postscript (PS) | Compressed Postscript (PS.GZ) | BibTeX Citation Version: 20010513:175054 (All versions of this report) Discussion forum: Show discussion | Start new discussion