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SLIDESHOW: CIO Blast from the Past - 60 years of cryptography
CIO magazine has a slideshow showing the 60 years of crypto, starting with the Enigma, an electric rotor machine that was used by Germany to encrypt and decrypt messages during World War II. Arthur Scherbius developed the Enigma around 1920. It goes through RSA, info on Schneier and Phil Zimmerman, and more.
The link for this article located at CIO is no longer available.