World Library  
Flag as Inappropriate
Email this Article

Rotational cryptanalysis

Article Id: WHEBN0026122724
Reproduction Date:

Title: Rotational cryptanalysis  
Author: World Heritage Encyclopedia
Language: English
Subject: Rebound attack, Threefish, Block cipher, Skein (hash function), Cobra ciphers
Collection: Cryptographic Attacks
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Rotational cryptanalysis

In cryptography, rotational cryptanalysis is a generic cryptanalytic attack against algorithms that rely on three operations: modular addition, rotation and XORARX for short. Algorithms relying on these operations are popular because they are relatively cheap in both hardware and software and run in constant time, making them safe from timing attacks in common implementations.

The term "rotational cryptanalysis" was coined by Dmitry Khovratovich and Ivica Nikolić in 2010 paper "Rotational Cryptanalysis of ARX", which presented the best cryptanalytic attacks at that time against a reduced-round Threefish cipher — part of Skein (hash function), a SHA-3 competition candidate.[1][2] A follow-up attack from the same authors and Christian Rechberger breaks collision resistance of up to 53 of 72 rounds in Skein-256, and 57 of 72 rounds in Skein-512. It also affects the Threefish cipher.[3]

References

  1. ^ Dmitry Khovratovich and Ivica Nikolić (2010). "Rotational Cryptanalysis of ARX". University of Luxembourg. 
  2. ^  
  3. ^ Dmitry Khovratovich, Ivica Nikolic, Christian Rechberger (2010-10-20). "Rotational Rebound Attacks on Reduced Skein". 


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.