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General | |
---|---|
Designers | Bruce Schneier, Matt Blaze |
First published | 1994-12-14 |
Derived from | DES |
Cipher detail | |
Key sizes | 128 bits |
Block sizes | 64 bits |
Structure | Unbalanced Feistel network |
Rounds | 32 |
In cryptography, MacGuffin is a block cipher created in 1994 by Bruce Schneier and Matt Blaze at a Fast Software Encryption workshop. It was intended as a catalyst for analysis of a new cipher structure, known as Generalized Unbalanced Feistel Networks (GUFNs). The cryptanalysis proceeded very quickly, so quickly that the cipher was broken at the same workshop by Vincent Rijmen and Bart Preneel.