Twofish is a symmetric block cipher operating on 128 bit blocks with keys up to 256 bits, combining a Feistel network structure with key-dependent S-boxes, a pseudo-Hadamard transform and a complex key schedule to resist a wide range of cryptanalytic attacks. It was designed by a team including Bruce Schneier as an entrant in the United States National Institute of Standards and Technology's competition to select the Advanced Encryption Standard, and it was one of five finalists, ultimately losing to Rijndael. It remains free to use with no licensing restrictions and continues to see use in some encryption software.
Facts
Credited ToBruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall and Niels Ferguson 1 Connections
Associated With
Twofish was one of the five finalists in the AES competition (narrowed from fifteen candidates in August 1999); Rijndael, represented here as the AES Algorithm entity, was the eventual winner.
Source Wikipedia: Advanced Encryption Standard Algorithm
Sources
1. Wikipedia: Twofish
Lead section, design sentenceQuote, Lead section, design sentence
Twofish was designed by Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson
Wikipedia: Advanced Encryption Standard Algorithm
Wikimedia FoundationAssociated With: Advanced Encryption Standard Algorithm, Advanced Encryption Standard processQuote, Associated With: Advanced Encryption Standard Algorithm, Advanced Encryption Standard process
In August 1999 they announced that they were narrowing the field from fifteen to five: MARS, RC6, Rijndael, Serpent, and Twofish.
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