Cryptology ePrint Archive: Report 2020/775

Improved Differential-Linear Attacks with Applications to ARX Ciphers

Christof Beierle and Gregor Leander and Yosuke Todo

Abstract: We present several improvements to the framework of differential-linear attacks with a special focus on ARX ciphers. As a demonstration of their impact, we apply them to Chaskey and ChaCha and we are able to significantly improve upon the best attacks published so far.

Category / Keywords: secret-key cryptography / Symmetric Cryptanalysis, ARX, Chaskey, ChaCha

Original Publication (with major differences): IACR-CRYPTO-2020

Date: received 23 Jun 2020

Contact author: todo yosuke at gmail com

Available format(s): PDF | BibTeX Citation

Note: This article is the full version of the paper to appear at CRYPTO 2020.

Version: 20200624:075726 (All versions of this report)

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