Editing WAKE (cipher) (section)

{{Short description|Stream cipher}}
In [[cryptography]], '''WAKE''' is a [[stream cipher]] designed by [[David Wheeler (computer scientist)|David Wheeler]] in 1993.

WAKE stands for '''Word Auto Key Encryption'''. The cipher works in ''cipher feedback'' [[Block cipher modes of operation|mode]], generating [[keystream]] blocks from previous [[ciphertext]] blocks. WAKE uses an [[S-box]] with 256 entries of 32-[[bit]] words.

The cipher is fast, but vulnerable to [[chosen plaintext attack|chosen plaintext]] and [[chosen ciphertext attack]]s.<ref>Bruce Schneier, ''Applied Cryptography'', Second Edition, page 402.</ref>