Journal on Communications ›› 2015, Vol. 36 ›› Issue (5): 167-173.doi: 10.11959/j.issn.1000-436x.2015112

• Academic communication • Previous Articles     Next Articles

Efficient algorithm for computing Walsh spectrum and differential probability

IUYan L,UBin H,ULi-ping X   

  1. School of Cryptography Engineering,Information Engineering University,Zhengzhou 450001,China
  • Online:2015-05-20 Published:2015-07-17
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China

Abstract:

According to the characteristic of T-functions,along with the definition of narrow T-functions,the linear prop-erty and differential property were studied.Markov chain and transition matrices were constructed to propose fast algo-rithm for computing Walsh spectrum and differential probability,of which the time complexity is O(n).In addition,the algorithm is applied in the T-functions in TSC-family and finally the result expression is given.

Key words: T-function, narrowness, Walsh spectrum, differential probability, Markov chain

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