“Communication Theory of Secrecy Systems.” Contained in The Bell System Technical Journal, Volume XXVII, No. 4 (October, 1949), pp. 656-715.
Shannon, Claude Elwood.

The first analysis of cryptology, the basis for today’s computer security. This paper was based on classified work on secrecy systems undertaken by Shannon in the final year of World War II. Spine worn, with loss of some of the title. Library rubberstamp on front and back cover and first page. A very good copy. The complete volume, in original printed wrappers. Octavo. (Item ID: 12076)

$650.00

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