UPPER BOUNDS FOR THE AVERAGE PROBABILITIES OF DIFFERENCE CHARACTERISTICS OF BLOCK CIPHERS WITH ALTERNATION OF MARKOV TRANSFORMATIONS AND GENERALIZED
Markov Transformations · 2014
A new method is proposed to find the average probabilities of differential characteristics of block ciphers, which allows us to use branch number even in case where the cipher is not Markov and has different operations in key adder. The upper bounds are obtained for the average probabilities of differential characteristics of block ciphers with alternation of Markov transformations and generalized Markov transformations.