Boosting differential-linear cryptanalysis of ChaCha7 with MILP

• Main Authors: Bellini, Emanuele, Gerault, David, Grados, Juan, Makarim, Rusydi H., Peyrin, Thomas
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2023
• 主題: Science::Mathematics; Cryptanalysis; Differential-Linear Attack
• 在線閱讀: https://hdl.handle.net/10356/171650
• 機構: Nanyang Technological University

In this paper, we present an improved differential-linear cryptanalysis of the ChaCha stream cipher. Our main contributions are new differential-linear distinguishers that we were able to build thanks to the following improvements: a) we considered a larger search space, including 2-bit differences...