Welcome to the resource topic for 2015/134
Title:
From Related-Key Distinguishers to Related-Key-Recovery on Even-Mansour Constructions
Authors: Pierre Karpman
Abstract:We show that a distinguishing attack in the related key model on an Even-Mansour block cipher can readily be converted into an extremely efficient key recovery attack. Concerned ciphers include in particular all iterated Even-Mansour schemes with independent keys. We apply this observation to the Caesar candidate Prøst-OTR and are able to recover the whole key with a number of requests linear in its size. This improves on recent forgery attacks in a similar setting.
ePrint: https://eprint.iacr.org/2015/134
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