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Red Pike is a classified United Kingdom government encryption algorithm, proposed for use by the National Health Service by GCHQ, but designed for a "broad range of applications in the British government" [1] Archived 2004-04-23 at the Wayback Machine. 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".

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  • Red Pike (fr)
  • Red Pike (cipher) (en)
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  • Red Pike is a classified United Kingdom government encryption algorithm, proposed for use by the National Health Service by GCHQ, but designed for a "broad range of applications in the British government" [1] Archived 2004-04-23 at the Wayback Machine. 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". (en)
  • Red Pike est un algorithme de chiffrement par bloc classifié par le gouvernement britannique. L'algorithme a été proposé par le GCHQ pour une utilisation au sein du National Health Service sans toutefois restreindre son utilisation à cette seule entité gouvernementale. Il a été certifié comme apte à chiffrer les données Restricted. et sont les noms d'autres chiffrements classifiés par le Royaume-Uni. (fr)
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  • Red Pike est un algorithme de chiffrement par bloc classifié par le gouvernement britannique. L'algorithme a été proposé par le GCHQ pour une utilisation au sein du National Health Service sans toutefois restreindre son utilisation à cette seule entité gouvernementale. Il a été certifié comme apte à chiffrer les données Restricted. Peu d'informations ont filtré à son sujet sauf qu'il s'agit d'un chiffrement sur un bloc de 64 bits avec une clé de 64 bits. D'après un rapport émanant de quatre experts académiques qui ont été cités à leur tour dans un papier de et Markus Kuhn, Red Pike utilise « les mêmes opérations basiques que celles de RC5 » (addition, XOR et décalage à gauche) et « ne possède pas de tables, pratiquement pas de key schedule et ne demande qu'environ 5 lignes de code ». De plus, « l'influence de chaque bit de la clé produit rapidement un effet avalanche » et « chaque chiffrement nécessite environ 100 opérations ». et sont les noms d'autres chiffrements classifiés par le Royaume-Uni. (fr)
  • Red Pike is a classified United Kingdom government encryption algorithm, proposed for use by the National Health Service by GCHQ, but designed for a "broad range of applications in the British government" [1] Archived 2004-04-23 at the Wayback Machine. 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". Red Pike is available to approved British government contractors in software form, for use in confidential (not secret) government communication systems. GCHQ also designed the Rambutan cryptosystem for the same segment. Given that Red Pike is a British encryption algorithm, its name likely refers to a particular fell in the western English Lake District. (en)
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