Improved Differential-Linear Attacks with Applications to ARX Ciphers

2020

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Authors

Yosuke Todo Gregor Leander Christof Beierle

Research Hub

Research Hub A: Kryptographie der Zukunft - CASA 1.0, 2019-2025

Research Challenges

RC 1: Cryptography against Mass Surveillance

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.

Awards

Best Paper Award