Improved Differential-Linear Attacks with Applications to ARX Ciphers2020
Research Hub A: Kryptographie der Zukunft
RC 1: Cryptography against Mass Surveillance
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.