Red Pike
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Red Pike is a classified United Kingdom government cipher, proposed for use by the National Health Service by GCHQ, but designed for a "broad range of applications in the British government" [link]. Little is publicly known about Red Pike, except that it is a block cipher with a 64-bit block size and 64-bit key length. According to the academic study of the cipher cited below and quoted in a paper by Ross Anderson and Markus Kuhn, it "uses the same basic operations as RC5" (add, XOR, and left shift) and "has no look-up tables, virtually no key schedule and requires only five lines of code"; "the influence of each key bit quickly cascades" and "each encryption involves of the order of 100 operations".
Thames Bridge and Rambutan are names of other classified UK ciphers; Rambutan is the most secret and Thames Bridge second-most.
See also
References
- C Mitchell, S Murphy, F Piper, P Wild. (1996). Red Pike — an assessment. Codes and Ciphers Ltd 2/10/96.
- [Paper by Anderson and Kuhn which includes excerpts from (Mitchell et. al., 1996)]
- ["The use of encryption and related services with the NHSnet"]
| Block ciphers [edit] |
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| Design: Feistel network | Key schedule | Product cipher | S-box | SPN Attacks: Brute force | Linear / Differential cryptanalysis | Mod n | Related key | XSL Standardization: AES process | CRYPTREC | NESSIE Misc: Avalanche effect | Block size | IV | Key size | Modes of operation | Piling-up lemma | Weak key |
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