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 ...

"暗号学は秘密の芸術に触発された数学の芸術です。" ベンジャミン・フランクリン(Benjamin Franklin) 本日はヴィジュネール暗号(The Vigenère Cipher)にしましょう。 ヴィジェネール暗号 ヴィジェネール暗号は、単純な多表式代替の形を使ってアルファベットの ...

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 ...

The Vigènere Cipher is a method of encrypting alphabetic text by using a form of polyalphabetic substitution, which was developed in the 16th century by French cryptographer Blaise de Vigenère. It ...

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 ...

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 ...