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- Title
Dynamic cube attack on Grain‐v1.
- Authors
Rahimi, Majid; Barmshory, Mostafa; Mansouri, Mohammad Hadi; Aref, Mohammad Reza
- Abstract
This study presents a dynamic cube attack on the algorithm Grain‐v1 which has resisted all the key‐recovery attacks in the single key model. The dynamic cube attack finds the secret key by using distinguishers obtained from structural weaknesses of a cipher. The main idea of the attack lies in simplifying the cipher's output function. After making it simpler, the attack is able to exploit a distinguishing attack to recover the secret key. In this study, the authors first find the appropriate simplifications for Grain‐v1. Then, they apply their attack to the algorithm by using a new framework and a new smart choice technique for the classification of initial value bits. Finally, the authors simulate the attack to find the suitable attack parameters having 73% success rate. Their attack runs in a practical time and recovers all the key bits when the number of initialisation rounds in Grain‐v1 is reduced to 100 of 160. The attack is faster than exhaustive search by a factor of 238.
- Publication
IET Information Security (Wiley-Blackwell), 2016, Vol 10, Issue 4, p165
- ISSN
1751-8709
- Publication type
Article
- DOI
10.1049/iet-ifs.2014.0239