Publication

Linear Cryptanalysis of DES

Pascal Junod
2004
Student project
Abstract

The main goal of this diploma work is the implementation of Matsui's linear cryptanalysis of DES and a statistical and theoretical analysis of its complexity and success probability. In order to achieve this goal, we implement first a very fast DES routine on the Intel Pentium III MMX architecture which is optimised for linear cryptanalysis. New implementation concepts are applied, resulting in a speed increase of almost 50% towards the best known classical implementation. The experimental results suggest strongly that the attack is in average about 10 times faster (O(239) DES computations) as expected with 243 known plaintext-ciphertext at disposal; furthermore, we have achieved a complexity of O(243) by using only 242.5 known pairs. Last, we propose a new analytical expression which approximates success probabilities; it gives slightly better results than Matsui's experimental ones.

About this result
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.