![]() ![]() Index Terms-Affine cipher, monoalphabetic cipher, polyalphabetic cipher, Vigenère cipher, complex transformation. Polyalphabetic substitution ciphers implemented by a class of rotor- based machines were the dominant cryptographic tool in World War II. Our proposed technique can also be considered as a complex transformation technique from Affine cipher known as a monoalphabetic cipher technique to a new polyalphabetic cipher technique that is called Vigenère-Affine cipher. It uses multiple substitution alphabets for encryption. In Polyalphabetic Substitution, Cipher is a method of encrypting alphabetic texts. Thus, in this paper we propose a polyalphabetic cipher that is a new encryption and decryption technique with diffusion and confusion properties based on the concept of the complex cipher used by combining of Vigenère cipher with Affine cipher for the increase of data security in data storage and transmission on public communication networks. Polyalphabetic Cipher is also known as Vigenere Cipher, which Leon Battista Alberti invents. ![]() It includes autokey, Playfair, Vigenere, Hill. As the Vigenère cipher does not have the properties of diffusion and confusion, it is longer vulnerable to Kasiski and Friedman attacks based on letter frequency analysis. Polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. It is a polyalphabetic cipher technique which uses the Vigenère table for the process of encryption of alphabets. One of the most popular cipher techniques is the Vigenère cipher. The process of encryption of alphabets is the converting original message into non readable form. They are methods of encrypting plain text message into cipher text protecting it from adversaries. to support data confidentiality as security mechanisms. In cryptography, there are various cipher techniques such as monoalphabetic cipher, polyalphabetic cipher, etc. Cryptography has come up as a solution which plays a vital role in information security system against malicious attacks. ![]() Tun Myat Aung, Htet Htet Naing, and Ni Ni HlaĪbstract-Fast progression of digital data exchange in electronic way, information security is becoming much more important in data storage and transmission on public communication networks. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |