Simple cryptanalysis studies of a stream cipher

Authors:
N. Nalini;G. Raghavendra Rao
Affiliations:
Department of Computer Science and Engineering, Siddaganga Institute of Technology, Tumkur 572103, Karnataka, India.;National Institute of Engineering, Mysore 570008, Karnataka, India
Venue:
International Journal of Information and Communication Technology
Year:
2008

Citing 3
Cited 1

A Software-Optimised Encryption Algorithm

Fast Software Encryption, Cambridge Security Workshop
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FSE '97 Proceedings of the 4th International Workshop on Fast Software Encryption
Simple cryptanalysis studies of a stream cipher

International Journal of Information and Communication Technology

Simple cryptanalysis studies of a stream cipher

International Journal of Information and Communication Technology

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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.