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Title:
Improved Multi-Dimensional Meet-in-the-Middle Cryptanalysis of KATAN
Authors: Shahram Rasoolzadeh, Håvard Raddum
Abstract:We study multidimensional meet-in-the-middle attacks on the KATAN block cipher family. Several improvements to the basic attacks are introduced and explained. The most noteworthy of these is the technique of guessing only non-linearly involved key bits, which reduces the search space by a significant factor. The optimizations decreases the complexity of multidimensional meet-in-the-middle attacks, allowing more rounds of KATAN to be efficiently attacked than previously reported.
ePrint: https://eprint.iacr.org/2016/077
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