To implement a program to encrypt a plain text and decrypt a cipher text using play fair Cipher substitution technique. Testing algorithm with different key values. ALGORITHM DESCRIPTION: The Playfair ...

To implement a program to encrypt a plain text and decrypt a cipher text using play fair Cipher substitution technique. Testing algorithm with different key values. ALGORITHM DESCRIPTION: The Playfair ...

3D-Playfair cipher is multiple letter encryption cipher. In this, trigraphs of plaintext are treated as single units and converted into corresponding cipher text trigraphs. 3D-Playfair Ciphers ...

The Double Playfair Cipher Back to Crack the Ciphers The Double Playfair is an extension of the Playfair to use two separate keys and to encipher each pair of letters twice.

His controllers have been unable to read it. Although it clearly uses his backup cipher, the Playfair, the keys assigned to him do not work.