Cryptography
4 tools available · Caesar, Vigenère, Playfair, Hill
Caesar Cipher
Encrypt or decrypt text using a classic shift cipher with adjustable rotation.
Vigenère Cipher
Encrypt or decrypt text using a keyword-based polyalphabetic substitution cipher.
Playfair Cipher
Encrypt or decrypt text using a 5×5 digraph cipher square built from a keyword.
Hill Cipher (2×2)
Encrypt or decrypt text using a 2×2 matrix cipher over the alphabet (mod 26).