The Autokey Cipher is one such example. In general, the term autokey refers to any cipher where the key is based on the original plaintext. In its simplest form, it was first described by Girolamo ...

Vigenere Autokey Cipher Decryption using Brute Force This Python script is designed to decrypt a ciphertext that has been encoded using the Vigenere cipher in Autokey mode. In this mode, the key ...