The Impact Of Cryptanalysis Using Advanced 3d Playfair Cipher Essay

2097 WordsOct 5, 20169 Pages
Impact of Cryptanalysis using Advanced 3D Playfair Cipher Gaurav Kumawat1, Sandeep Upadhyay2 1 Department of Computer Sc. & Engg, Techno India NJR Institute of Technology 1gaurav_kumawat2002@yahoo.com 2 Department of Computer Sc. & Engg, Techno India NJR Institute of Technology 2sandeepupadhyay30@gmail.com Abstract. The Playfair cipher is a manual symmetric encryption technique and was the first literal digraph substitution cipher. The cryptanalysis of the Playfair cipher is also aided by the fact that a diagram and its reverse will encrypt in a similar fashion. The paper proposes to encrypt/decrypt by choosing 216 ASCII characters out of 256 ASCII characters. The 216 characters includes the most frequently & popularly usable characters like 26 upper & lower case alphabets, 10 numerals and 154 most commonly used special characters of ASCII character set. 40 special characters that are less frequently used are exempted. 2D-Playfair cipher is a case sensitive cipher, as it requires only 26 alphabets rather than 52 alphabets (including lower and upper case both).The theme of this paper is to provide security for the data that contains a wider coverage of alphabets numerals and special characters in compare to 2D playfair cipher. 1 Introduction Cryptography is the practice and study of techniques for secure communication in the presence of third parties. The art of protecting information by transforming it (encrypting it) into an unreadable format is called cipher text.

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