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- W351251939 abstract "Impossible differential attacks are among the most powerful forms of cryptanalysis against block ciphers. We present in this paper an in-depth complexity analysis of these attacks. We show an unified way to mount such attacks and provide generic formulas for estimating their time, data and memory complexities. LBlock is a well studied lightweight block cipher with respect to impossible differential attacks. While previous single-key cryptanalysis reached up to 22 rounds, by applying our method we are able to break 23 rounds with time complexity $2^{75.36}$ and data complexity $2^{59}$. Other time/data trade-offs are equally possible. This is to our knowledge the best (non-exhaustive search like) cryptanalysis of this function in the single-key model." @default.
- W351251939 created "2016-06-24" @default.
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- W351251939 date "2014-04-09" @default.
- W351251939 modified "2023-10-06" @default.
- W351251939 title "Improved Impossible Differential Attacks against Round-Reduced LBlock" @default.
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