Authors: N. Nalini, G. Raghavendra Rao
Addresses: Department of Computer Science and Engineering, Siddaganga Institute of Technology, Tumkur 572103, Karnataka, India. ' National Institute of Engineering, Mysore 570008, Karnataka, India
Abstract: For the cryptanalysis of ciphers, other than brute-force methods, several optimisation heuristics have been tried; these efforts are computer-intensive in nature. To demonstrate the power of simple heuristic techniques not based on any optimisation formulation, we present a simple algorithm for the known ciphertext attack of 160-bit Software Encryption Algorithm (SEAL) cipher. We attempt differential and Chi-square cryptanalysis of SEAL. The concepts developed in the paper are useful in the cryptanalysis of block and stream ciphers.
Keywords: cryptanalysis; stream ciphers; software encryption algorithm; SEAL; differential cryptanalysis; chi-square cryptanalysis; cryptanalysis heuristics; ciphertext attack; block ciphers.
International Journal of Information and Communication Technology, 2008 Vol.1 No.2, pp.171 - 184
Published online: 28 Jun 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article