Supported Ciphers
Affine
A monoalphabetic substitution cipher. Each letter in the alphabet is mapped to a number, then encrypted/decrypted using a math formula, and finally converted back to a letter. Learn more
Atbash
A simple substitution cipher originally created for the Hebrew alphabet. When used with the English alphabet, this cipher reverses the alphabet. Learn more
Caesar
A popular substitution cipher, where the alphabet is shifted up or down a specified number of positions. Learn more
Keyed Substitution
A monoalphabetic substitution cipher, where a keyword placed into beginning of the alphabet, and any duplicated letters are removed. Learn more
Masonic
A geometric simple substitution cipher which exchanges letters for symbols which are fragments of a grid. Learn more
Playfair
Encrypts pairs of letters, using a 5x5 grid. Learn more
Polybius Square
A cipher where each alphanumeric (a-z, 0-9) character is represented by it’s coordinates in a grid. Learn more
Vigenère
A simple polyalphabetic substitution cipher which uses a tableau composed of each of the 26 options of the Caesar Cipher. Learn more
🎨 Design
Catalog of various redesigns over time as I got the itch to work on this again.
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