In the Vigenere cipher, unlike in Ceasar cipher, the displacement involved for each character is different. The sequence of displacement is decided by a keyword, which is known to both the ...

In 1586 he combined the table of Trithemius, the key of Belaso and the mixture of letters of Porta into what is generally called the Vigenère Cipher or Chiffre Indéchiffrable. In all the literature of ...