Modified Version of Playfair Cipher Using Linear Feedback Shift Register and Transpose Matrix Concept

Provided by: International Journal of Innovative Technology and Exploring Engineering (IJITEE)
Topic: Security
Format: PDF
In this paper the authors are presenting a new technique for secure transmission of message by modified version of playfair cipher combining with random number generator and transpose of matrix concept. To develop such method of encryption technique they have used one of the simplest methods of random number generator called linear feedback shift register and transpose matrix concept has been used. The previous playfair cipher method is based on poly-alphabetic cipher which is relatively easy to break because it leaves much of loop hole and a small hundreds of letters of cipher text are sufficient.

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