Cryptanalysis of Simplified-AES using Particle Swarm Optimisation
R. Vimalathithan, Muniyappan Lakshapalam Valarmathi · Defence Science Journal · 2012
Particle swarm optimisation (PSO) based cryptanalysis has gained much attention due to its fast convergence rate. This paper proposes a PSO-based cryptanalysis scheme for breaking the key employed in simplified-advance encryption standard (S-AES). The cost function is derived using letter frequency analysis. The novelty in our approach is to apply ciphertext-only attack for an S-AES encryption system, where we obtained the key in a minimum search space compared to the Brute-Force attack. Experimental results prove that PSO can be used as an effective tool to attack the key used in S-AES. Defence Science Journal, 2012, 62(2), pp.117-121 , DOI:http://dx.doi.org/10.14429/dsj. 62.778