autokey
Adjective
Meaning
autokey (not comparable)
(cryptography) Being a cipher that incorporates the plaintext into the key.
Synonyms
Examples
During the Crimean War of the 1850s, Babbage broke Vigenère's autokey cipher as well as the much weaker cipher that is called Vigenère cipher today. citation His discovery was kept a military secret, and was not published.
Such schemes are known as self-synchronizing stream ciphers, asynchronous stream ciphers or ciphertext autokey (CTAK).