Red Pike is a classifiedUnited 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" [1] (http://www.cs.berkeley.edu/~daw/rja/GCHQ/25_2_97.htm). 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.
It gives one the feeling, as do the summits of Catstye Cam and Kidsty Pike, of being on top of the world.
Retrace your steps to Scoat Fell bypassing the summit and continuing southeast to RedPike.
Keep near the edge of the escarpment to the true summit - you'll miss the rugged northeast face of RedPike if you take the path that by-passes the summit to the right.
Red is the color of the passion (emotion), romance and sex, (because of its association with blood, which is responsible for arousal) thus the red of a Valentine heart and of a "red-light district".
Red is the color used for critical or important systems (such as emergency lighting) that operate in low-light or night-time conditions, as rod cells in the human eye do not respond to it and therefore does not interfere in the eye's ability to focus in dim environments.
Red light is the first to be absorbed by sea water, so that many fish and marine invertebrates that appear bright red are fl in their native habitat.
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