In 1854, Sir Charles Wheatstone invented the cipher known as "Playfair," named for his friend Lyon Playfair, first Baron Playfair of St. Andrews, who popularized and promoted the cipher.

This was one of the most secure hand ciphers used in the Second World War. It was used by both the Allies and the Axis, and served both well. Its main weakness was that if the attacker intercepted ...

If you have ever been to the web corners where people enjoy animated creations, one mysterious symbol might be familiar to you: Bill Cipher. This menacing yellow cartoon character who sports a top ...

CYB-AES implements Rijndael cipher encoding and decoding in compliance with the NIST Advanced Encryption Standard. It supports all of the available key-sizes (128 ...

This time, it’ll be a decoding machine! We'll be doing a lot of cool coding tricks here, so we will use the Python editor for this part of the mission. The Caesar Cipher is a simple encryption ...