Welcome to the resource topic for 2007/043
Title:
Reflection Attacks on Product Ciphers
Authors: Orhun Kara
Abstract:In this paper we describe a novel attack method on product ciphers, the {\em reflection attack}. The attack method exploits certain similarities among round functions which have not been utilized in previous self similarity attacks. We give practical examples illustrating the power of the reflection attack on several ciphers such as GOST, DEAL and some variants of DES and Magenta. Many interesting and exceptional properties of the attack are also presented in these examples. In addition, we discuss new design criteria that make product ciphers resistant to self similarity attacks and introduce a definition of similarity degree.
ePrint: https://eprint.iacr.org/2007/043
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