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Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.

Capstone is a U.S. Government's program to develop cryptography and security standards for protecting government communications as specified in FIPS (Federal Information Processing Standard). These standards must be used by government agencies and private companies that do business with the government. NIST (National Institute of Standards and Technology) and NSA (National Security Agency) are responsible for Capstone. Capstone's major components include an encryption algorithm called Skipjack (and a Skipjack encryption chip called Clipper), a hash function called SHA-1 (Secure Hash Standard-1), and DSA (Digital Signature Algorithm), which is the algorithm used in DSS (Digital Signature Standard). Capstone is also working on a key exchange protocol.

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