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Secure lightweight block ciphers have become an important aspect due to the fact that they are a popular choice for providing security in ubiquitous devices. Two of the most important attacks on block ciphers are differential cryptanalysis  and linear cryptanalysis  . Calculating the number of active S-boxes is one of the method to examine the security of block ciphers against differential attack. In this paper, we count the minimum number of active S-boxes for several rounds of thedoi:10.31449/inf.v45i6.3427 fatcat:epk2ezmha5ftxcfyst3zpjryru