doi: 10.7763/IJCTE.2009.V1.95
A Modified Playfair Cipher for a Large Block of Plaintext
V. Umakanta Sastry1
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- 1Department of Computer Science and Engineering, Sreenidhi Institute of Science and Technology, India.
- 2Department of Computer Science and Engineering, Sreenidhi Institute of Science and Technology, Hyderabad, India.
- 3School of Information Technology, J.N.T. University, Hyderabad, India.
Abstract
In this paper, we have extended the analysis of the modified Playfair cipher, which includes interweaving and iteration, by considering a plaintext of any size. Here, we have carried out cryptanalysis and examined the avalanche effect. From this analysis, we have found that the cipher is a strong one and it cannot be broken by any cryptanalytic attack.
Keywords
- interweaving
- inverse interweaving
- substitution matrix
How to Cite
V. Umakanta Sastry, N. Ravi Shankar, and S. Durga Bhavani, "A Modified Playfair Cipher for a Large Block of Plaintext," International Journal of Computer Theory and Engineering, vol. 1, no. 5, pp. 592-596, 2009. https://doi.org/10.7763/IJCTE.2009.V1.95
Copyright & License
Copyright © 2009 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).