  Differential cryptanalysis is one of the most popular methods in attacking
block ciphers. However, there still some limitations in traditional
differential cryptanalysis. On the other hand, researches of quantum algorithms
have made great progress nowadays. This paper proposes two methods to apply
quantum algorithms in differential cryptanalysis, and analysis their
efficiencies and success probabilities. One method is using quantum algorithm
in the high probability differential finding period for every S-Box. The second
method is taking the encryption as a whole, using quantum algorithm in this
process.
