NDLI: Improved Practical Attacks on Round-Reduced Keccak

Content Provider	Springer Nature Link
Author	Dinur, Itai Dunkelman, Orr Shamir, Adi
Copyright Year	2012
Abstract	The Keccak hash function is the winner of NIST’s SHA-3 competition, and so far it showed remarkable resistance against practical collision finding attacks: After several years of cryptanalysis and a lot of effort, the largest number of Keccak rounds for which actual collisions were found was only 2. In this paper, we develop improved collision finding techniques which enable us to double this number. More precisely, we can now find within a few minutes on a single PC actual collisions in the standard Keccak-224 and Keccak-256, where the only modification is to reduce their number of rounds to 4. When we apply our techniques to 5-round Keccak, we can get in a few days near collisions, where the Hamming distance is 5 in the case of Keccak-224 and 10 in the case of Keccak-256. Our new attack combines differential and algebraic techniques, and uses the fact that each round of Keccak is only a quadratic mapping in order to efficiently find pairs of messages which follow a high probability differential characteristic. Since full Keccak has 24 rounds, our attack does not threaten the security of the hash function.
Starting Page	183
Ending Page	209
Page Count	27
File Format	PDF
ISSN	09332790
Journal	Journal of Cryptology
Volume Number	27
Issue Number	2
e-ISSN	14321378
Language	English
Publisher	Springer US
Publisher Date	2012-12-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cryptanalysis SHA-3 Keccak Collision Near-collision Practical attack Coding and Information Theory Computational Mathematics and Numerical Analysis Combinatorics Probability Theory and Stochastic Processes Communications Engineering, Networks
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Computer Science Applications Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Improved Cryptanalysis of AES-like Permutations

Rotational Rebound Attacks on Reduced Skein

Cryptanalysis of SHA-0 and Reduced SHA-1

Practical Collisions for EnRUPT

Collision attacks on up to 5 rounds of sha-3 using generalized internal differentials.

A Practical Attack on KeeLoq

Collision Attack on Grindahl

Cryptanalysis of MD2

A.: New Attacks on Keccak-224 and Keccak-256 (2012)

Improved Practical Attacks on Round-Reduced Keccak

Similar Documents

Improved Cryptanalysis of AES-like Permutations

Rotational Rebound Attacks on Reduced Skein

Cryptanalysis of SHA-0 and Reduced SHA-1

Practical Collisions for EnRUPT

Collision attacks on up to 5 rounds of sha-3 using generalized internal differentials.

A Practical Attack on KeeLoq

Collision Attack on Grindahl

Cryptanalysis of MD2

A.: New Attacks on Keccak-224 and Keccak-256 (2012)

Improved Practical Attacks on Round-Reduced Keccak