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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Examples of Mainly Corporate Funded Think Tanks: Cato Institute Founded in 1977 the Cato Institutes 1998 budget made up US$ 11 million. Its funding consists of corporate and private donations (especially from corporations and executives in the highly regulated industries of financial services, telecommunications and pharmaceuticals industries) and sales of publications. Catos corporate donors include tobacco firms: Philip Morris (Rupert Murdoch sits on Philip Morris board of directors) and R.J. Reynolds. Financial firms: American Express, Chase Manhattan Bank, Chemical Bank, Citicorp/Citibank, Commonwealth Fund, Prudential Securities and Salomon Brothers. Energy conglomerates: Chevron Companies, Exxon Company, Shell Oil Company and Tenneco Gas, as well as the American Petroleum Institute, Amoco Foundation and Atlantic Richfield Foundation. Furthermore the Cato Institute is funded by pharmaceutical firms: Eli Lilly & Company, Merck & Company and Pfizer, Inc., foundations, like Koch, Lambe and Sarah Scaife and companies from the telecommunications sector: Bell Atlantic Network Services, BellSouth Corporation, Microsoft, NYNEX Corporation, Sun Microsystems and Viacom.

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Mark A mark (trademark or service mark) is "... a sign, or a combination of signs, capable of distinguishing the goods or services of one undertaking from those of other undertakings. The sign may particularly consist of one or more distinctive words, letters, numbers, drawings or pictures, emblems, colors or combinations of colors, or may be three-dimensional..." (WIPO) To be protected a mark must be registered in a government office whereby generally the duration is limited in time, but can be periodically (usually every 10 years) renewed.

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