Welcome to the resource topic for 2021/1238
Title:
Generic Framework for Key-Guessing Improvements
Authors: Marek Broll, Federico Canale, Antonio Flórez-Gutiérrez, Gregor Leander, María Naya-Plasencia
Abstract:We propose a general technique to improve the key-guessing step of several attacks on block ciphers. This is achieved by defining and studying some new properties of the associated S-boxes and by representing them as a special type of decision trees that are crucial for finding fine-grained guessing strategies for various attack vectors. We have proposed and implemented the algorithm that efficiently finds such trees, and use it for providing several applications of this approach, which include the best known attacks on NOKEON, GIFT, and RECTANGLE.
ePrint: https://eprint.iacr.org/2021/1238
Talk: https://www.youtube.com/watch?v=ylBvf9Iu7x8
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