Cryptography

The Affine Cipher

The affine cipher is a type of monoalphabetic substitution cipher, wherein each letter in an alphabet is mapped to its numeric…

The Vernam Cipher

The Playfair cipher or Playfair square cipher is a manual symmetric encryption…

The Vigenère Cipher

The Vigenère cipher is a method of encrypting alphabetic text by using a series of interwoven Caesar ciphers, based on the…

The Atbash Cipher

The Atbash cipher is another type of substitution cipher. It entails replacing each letter in the plaintext with the…

The Caesar Cipher

The Caesar cipher, also known as the shift cipher, is a type of substitution cipher. Each letter in the plaintext is replaced…

The Null Cipher

The null cipher adds noise to the plaintext,
with the goal of making the plaintext hard to isolate.