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Zero-correlation linear attack is a new method developed by Bogdanov et al. (ASIACRYPT 2012. LNCS, Springer, Berlin, 2012) for the cryptanalysis of block ciphers. In this paper we adapt the matrix method to find zero-correlation linear approximations. Then we present several zero-correlation linear approximations for 14 rounds of LBlock and describe a cryptanalysis for a reduced 22-round version of...
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