This project aims to develop an innovative, real-time secure encryption system combining the strengths of two encryption techniques: the Advanced Encryption Standard (AES) and the Polybius cipher ...

Cipher #1: Caesar (shift 4) Cipher #2: Caesar (shift 14) Cipher #3: Vigenere (key: BERIKUT) Cipher #4: Route Cipher (interval 4) Cipher #5: Transposition (Samuel Morland) ...

Abstract: Security of information is one of the most concerned issues during data transmission wherein cryptographic schemes are needed. This paper intends to improve the encryption scheme of the 3D ...

The Playfair cipher is an incredibLe code system that is both difficult to decrypt without a computer and easily solvable by hand. You might be familiar with the Cryptoquip in the comics section of a ...

In 1854, Sir Charles Wheatstone invented the cipher known as "Playfair," named for his friend Lyon Playfair, first Baron Playfair of St. Andrews, who popularized and promoted the cipher. Its ...

Abstract: 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 ...

The Double Playfair is an extension of the Playfair to use two separate keys and to encipher each pair of letters twice. The German police made the mistake in late 1941 of switching from the rather ...