2CLASSICAL CRYPTOGRAPHIC ALGORITHMS
SHEIKH SHAUGAT ABDULLAH AND SAIFUL AZAD
2.1 Caesar Cipher
2.2 Monoalphabetic Cipher
2.3 Playfair Cipher
2.4 Polyalphabetic Cipher
The history of cryptography starts from the ancient era when it was practiced by the secret societies or by the troops on the battlefield. The necessity of such an approach has increased with time. In the current information era, there is indeed no time at which information ...