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A Simple Algebraic Model based Polyalphabetic Substitution Cipher
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 39 - Number 8 |
| Year of Publication: 2012 |
| Authors: Sukalyan Som, Sabyasachi Ghosh |
10.5120/4844-7111
|
Sukalyan Som, Sabyasachi Ghosh . A Simple Algebraic Model based Polyalphabetic Substitution Cipher. International Journal of Computer Applications. 39, 8 ( February 2012), 53-56. DOI=10.5120/4844-7111
Abstract
Cryptography is considered to be a disciple of science of achieving security by converting sensitive information to an un-interpretable form such that it cannot be interpreted by anyone except the transmitter and intended recipient. An innumerable set of cryptographic schemes persist in which each of it has its own affirmative and feeble characteristics. In this paper we have we have developed a traditional or character oriented Polyalphabetic cipher by using a simple algebraic equation. In this we made use of iteration process and introduced a key K0 obtained by permuting the elements of a given key seed value. This key strengthens the cipher and it does not allow the cipher to be broken by the known plain text attack. The cryptanalysis performed clearly indicates that the cipher is a strong one.
References
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- Sukalyan Som, Saikat Ghosh, “A Survey of Traditional or Character Oriented Symmetric Key Cryptography”, International Journal of Advanced Research in Computer Science, Vol. 2, No. 4, July-August 2011
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