- Red Pike
Red Pike is a classified
United Kingdom government cipher, proposed for use by theNational Health Service byGCHQ , but designed for a "broad range of applications in the British government" [http://www.cs.berkeley.edu/~daw/rja/GCHQ/25_2_97.htm] . Little is publicly known about Red Pike, except that it is ablock cipher with a 64-bit block size and 64-bitkey length . According to the academic study of the cipher cited below and quoted in a paper byRoss Anderson andMarkus 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".Red Pike is available to approved British government contractors in software form, for use in confidential (not classified) government communication systems. GCHQ also designed the Rambutan cryptosystem for the same segment.
ee also
*
Type 1 product References
* C Mitchell, S Murphy, F Piper, P Wild. (1996). Red Pike — an assessment. Codes and Ciphers Ltd 2/10/96.
* [http://www.ftp.cl.cam.ac.uk/ftp/users/rja14/dfa Paper by Anderson and Kuhn which includes excerpts from (Mitchell et. al., 1996)]
* [http://www.cypherspace.org/adam/ukexport/zergo.html "The use of encryption and related services with the NHSnet"]
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