A Modified Version of Extended PlayFair Cipher (8X8)

ABSTRACT-

In this paper we have some modification in Playfair Cipher Substitution Technique. We have proposed a method to enhance the Playfair cipher for more secure and efficient cryptography. We use 8X8 Playfair cipher and  have made use of a Simple Columnar Transposition Technique with Multiple Rounds in 8X8 Playfair Cipher Substitution Technique and  arranged a special symbol by overall Character Frequency Analysis (CFA) .

Keywords- Playfair Cipher, Simple Columnar Transposition Technique,Special Symbols, CFA 

Publication Details -

Title

A Modified Version of Extended PlayFair Cipher (8X8)

Main Author	Gaurav Shrivastava*
Publications	International Journal of Engineering And Computer Science
Date & Year	1 May 2013
Volume	Volume 2 Issue 4, Page No. 956 -961
ISSN No.	ISSN: 2319-7242

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