ICE (encryption algorithm)
From Just Solve the File Format Problem
ICE (Information Concealment Engine) is a a 64-bit private key block cipher, in the tradition of DES. However, unlike DES, it was designed to be secure against differential and linear cryptanalysis, and has no key complementation weaknesses or weak keys. In addition, its key size can be any multiple of 64 bits, whereas the DES key is limited to 56 bits.
It is implemented in SNOW/stegsnow, icecrypt, and gifshuffle.
