Modified Caesar Cipher for Better Security Enhancement

SD-AREE-I Cipher: Amalgamation of Bit Manipulation, Modified VERNAM CIPHER & Modified Caesar Cipher (SD-AREE)

This paper presents a new combined symmetric key cryptographic technique, which is generally an amalgamation of Bit Manipulation, generalized Modified Vernam Cipher, Single Bit Manipulation and Modified Caesar Cipher. The technique proposed here is basically an advanced and upgraded module of SD-AREE cryptographic method, which is based on Modified Caesar Cipher along with Bit Manipulation and ...

Enhancing the security of caesar cipher substitution method using a randomized approach for more secure communication

Caesar cipher is an ancient, elementary method of encrypting plain text message into cipher text protecting it from adversaries. However, with the advent of powerful computers, there is a need for increasing the complexity of such techniques. This paper contributes in the area of classical cryptography by providing a modified and expanded version for Caesar cipher using knowledge of mathematics...

Novel Hardware Implementation of Modified RC4 Stream Cipher for Wireless Network Security

This paper presents novel hardware implementation of modified RC4 stream cipher for wireless network security. The Modified RC4 algorithm proposes two changes in conventional RC4 stream cipher algorithm, one in Key Scheduling Algorithm (KSA) stage and other in Pseudorandom Generation Algorithm (PRGA) stage. This modification in KSA removed many weakness and produces random states, so that it wi...

A Modified Feistel Cipher Involving

In this paper, we have developed a modification to the Feistel cipher by taking the plaintext in the form of a pair of matrices and introducing a set of functions namely, substitute, shifting of rows, mixing of columns and XOR operation with a key. Further we have supplemented this process by using another function called shuffling at the end of each round of the iteration process. In this anal...

Enhancement the Security of AES Against Modern Attacks by Using Variable Key Block Cipher