Cryptanalysis of Vigenere Cipher Using Particle Swarm Optimization With Markov Chain Random Walk

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Provided by: Engg Journals Publications
Topic: Data Management
Format: PDF
Vigenere cipher is a polyalphabetic substitution cipher with a very large key space. In this paper, the authors have investigated the use of PSO for the cryptanalysis of vigenere cipher and proposed PSO with Markov chain random walk in which some of the worst particles are replaced with new better random particles to enhance the efficiency of PSO algorithm. Based on their experimental results, it is shown that the proposed algorithm is more effective than PSO for the analysis of Vigenere cipher.
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