Cryptology ePrint Archive: Report 2021/379

A Note on the Bias of Rotational Differential-Linear Distinguishers

Yunwen Liu and Zhongfeng Niu and Siwei Sun and Chao Li and Lei Hu

Abstract: This note solves the open problem of finding a closed formula for the bias of a rotational differential-linear distinguisher proposed in IACR ePrint 2021/189 (EUROCRYPT 2021), completely generalizing the results on ordinary differential-linear distinguishers due to Blondeau, Leander, and Nyberg (JoC 2017) to the case of rotational differential-linear distinguishers.

Category / Keywords: secret-key cryptography / Rotational Differential-linear, Differential-linear Attacks, Rotational Cryptanalysis, Multidimensional Differential-linear Attacks

Date: received 21 Mar 2021

Contact author: univerlyw at hotmail com, siweisun isaac at gmail com, niuzhongfeng at iie ac cn, lichao_nudt at sina com, hulei at iie ac cn

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Version: 20210322:194006 (All versions of this report)

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