This is a simple web application that implements the Vigenère cipher. It allows users to encrypt a message using a specific keyword. The project was created to demonstrate fundamental concepts of ...

1. Caesar's Cipher: Description: Caesar's Cipher is a substitution cipher that shifts each letter in the plaintext by a fixed number of positions. The shift value, known as the key, determines the ...

Introduction: In this lab activity you will use MatLab and write functions to decrypt a message that is encoded with a Vigenere cipher. This lab is available at www ...

Abstract: Cryptanalysis is the technique of analysing and breaking an encrypted text (ciphertext) to obtain the clear text (plaintext). Cryptanalysis analyses all the information available about the ...

Abstract: This paper proposes a cipher algorithm of order /spl theta/ using the Vigenere principle. A cipher method with numerical data is used. The cipher depends on the key that is composed by the ...