Timeline Cryptography - Introduction

Besides oral conversations and written language many other ways of information-transport are known: like the bush telegraph, drums, smoke signals etc. Those methods are not cryptography, still they need en- and decoding, which means that the history of language, the history of communication and the history of cryptography are closely connected to each other
The timeline gives an insight into the endless fight between enciphering and deciphering. The reasons for them can be found in public and private issues at the same time, though mostly connected to military maneuvers and/or political tasks.

One of the most important researchers on Cryptography through the centuries is David Kahn; many parts of the following timeline are originating from his work.

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UNIVAC

Built by Remington Rand in 1951 the UNIVAC I (Universal Automatic Computer) was one of the first commercially available computers to take advantage of the development of the central processing unit (CPU). Both the U.S. Census bureau and General Electric owned UNIVACs. Speed: 1,905 operations per second; input/output: magnetic tape, unityper, printer; memory size: 1,000 12-digit words in delay line; technology: serial vacuum tubes, delay lines, magnetic tape; floor space: 943 cubic feet; cost: F.O.B. factory U.S.$ 750,000 plus U.S.$ 185,000 for a high speed printer.

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