Abstract

The Four Stage Encryption System introduced by Acharyulu and Appaji provides secrecy even when the attacker has some samples of plain texts and their corresponding cipher texts obtained with the same key, because the cipher text generated each time, for the same plain text with the same key, is different. In other words, the system is secure against adaptive chosen-plain text attack. Another interesting feature is that even the size of the cipher text, for given plain text under a given key, is unpredictable. In this paper the four stage encryption system is generalized as Generated Partitioned Output Crypto System and some variations that can be taken up are suggested. A pure mathematical system called Partitioned Output Crypto System is introduced as a further step of generalization in order to study the properties of the system. A correlation with the existing systems is taken up as a part of the study of the properties. It's observed that the system shares the properties of multifunction.

References

• Gomatam V S Acharyulu, Sangapu V Appaji, "Analysis of Four Stage Encryption", International Journal of Research in Computer and Communication Technology, Vol. 6, Issue 4, pp. 338-339, Nov. 2012.
• Gomatam V S Acharyulu, Sangapu V Appaji, "Four Stage Encryption", International Journal of Research in Computer and Communication Technology, Vol. 1, Issue 4, pp. 129-132, sep. 2012.
• Gomatam V S Acharyulu, Matrix Representable SO-Rings, Semigroup Forum, Vol. 46, pp. 37-47, 1993.
• C. A. Henk, "Introduction", in Fundamentals of cryptology a professional reference and interactive tutorial van Tilborg", Eindhoven University of Technology, The Netherlands kluwer academic publishersboston/dordrecht/London,pp. 3, http://hyperelliptic. org/tanja//teaching/cryptoI13/cryptodict. pdf.
• J. Hoffstein, J. Jipher, J. H. Silverman, "Intrduction to Cryptography" in Introduction to Mathematical Cryptography, Springer-Verlag, 2008, pp. 38.
• C. Kaufman, R. Perlman, M. Speciner, "Network Security. Upper Saddle River", NJ: Prentice Hall, 2002
• Moses Liskov, L. Ronald Rivest, David Wagner. "Tweakable Block Ciphers". Journal of Cryptology, 24(3), pp. July, 2011.
• E. G. Manes, M. A. Arbib, "Algebraic Approaches to Prgram Semantics", Spriger-Verlag, New ork, Inc. , 1986.
• E. G. Manes, D. B. Benson, "Inverse semigroup of sum-ordered semi ring", Semigroup Forum, Vol. 31, pp. 129-152, 1985
• M. E. Streenstrup E. , Sum-Ordered Partial Semirings, Doctoral Thesis, Department of Computer and Information Science, University of Massachusetts, 1985.
• William Stallings, "Cryptography and Network Security Principles and Practice Fifth Edition", Prentice Hall, pp. 68, 198-214, 2011.
• Sangapu Venkata Appaji, Dr. Gomatham V S Acharyulu, "A Study of Four stage encryption: Experimental results". Accepted by IEEE International Conference on Computational Intelligence and Computing research", Coimbatore, 2014.