Hill Cipher
Alphabet
Key
Hill Cipher is a polygraphic substitution cipher based on linear algebra. Invented by Lester S. Hill in 1929, it was the first polygraphic cipher in which it was practical (though barely) to operate on more than three symbols at once. It used matrices and matrix multiplication to mix up the plaintext. [Wikipedia]
Related Tools
ADFGVX Cipher
ADFGVX Cipher is a transposition and substitution cipher used during World War I by the German Army. The name "ADFGVX" comes from the six possible letters used in the cipher: A, D, F, G, V, and X.
ADFGX Cipher
The ADFGX Cipher is a fractionating transposition cipher which combined a modified Polybius square with a single columnar transposition. It is closely related to the ADFGVX Cipher.
Affine Cipher
Affine Cipher is a type of monoalphabetic substitution cipher. It encrypts a text using an affine function (f(x) = ax + b).
Autokey Cipher
Autokey Cipher is a polyalphabetic substitution cipher. It is closely related to the Vigenere cipher, but uses a different method of generating the key.