Timeline 1600 - 1900 AD 17th century Cardinal Richelieu invents an encryption-tool called grille, a card with holes for writing messages on paper into the holes of those cards. Afterwards he removes the cards and fills in the blanks, so the message looks like an ordinary letter. The recipient needs to own the same card - Bishop John Wilkins invents a cryptologic system looking like music notes. In a book he describes several forms of steganographic systems like secrets inks, but also the string cipher. He mentions the so-called Pig Latin, a spoken way of encryption that was already used by the ancient Indians - the English scientist, magician and astrologer John Dee works on the ancient Enochian alphabet; he also possesses an encrypted writing that could not been broken until today 1605/1623 Sir Francis Bacon (= Francis Tudor = William Shakespeare?) writes several works containing ideas about cryptography. One of his most important advises is to use ciphers in such a way that no-one gets suspicious that the text could be enciphered. For this the steganogram was the best method, very often used in poems. The attempt to decipher Shakespeare's sonnets (in the 20th century) lead to the idea that his works had been written by Francis Bacon originally. 1671 Leibniz invents a calculating machine that uses the binary scale which we still use today, more advanced of course, called the ASCII code 18th century this is the time of the Black Chambers of espionage in Europe, Vienna having one of the most effective ones, called the "Geheime Kabinettskanzlei", headed by Baron Ignaz von Koch. Its task is to read through international diplomatic mail, copy letters and return them to the post-office the same morning. Supposedly about 100 letters are dealt with each day. 1790's Thomas Jefferson and Robert Patterson invent a wheel cipher 1799 the Rosetta Stone is found and makes it possible to decipher the Egyptian Hieroglyphs 1832 or 1838 Sam Morse develops the Morse Code, which actually is no code but an enciphered alphabet of short and long sounds. The first Morse code-message is sent by telegraph in 1844. 1834 the Braille Code for blind people is developed in today's form by Louis Braille 1844 the invention of the telegraph changes cryptography very much, as codes are absolutely necessary by then 1854 the Playfair cipher is invented by Sir Charles Wheatstone 1859 for the first time a tomographic cipher gets described 1861 Friedrich W. Kasiski does a cryptoanalysis of the Vigenère ciphers, which had been supposed to be uncrackable for ages 1891 Major Etienne Bazeries creates a new version of the wheel cipher, which is rejected by the French Army 1895 the invention of the radio changes cryptography-tasks again and makes them even more important

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Digital Signatures, Timestamps etc Most computer systems are far from being secure. A lack of security - it is said - might hinder the developments of new information technologies. Everybody knows electronic transactions involve a more or less calculated risk. Rumors about insecurity let consumers doubt whether the commodity of e-commerce is bigger or its risks. First of all the market depends on the consumer's confidence. To provide that another application for public key cryptography gets essential: the digital signature, which is used to verify the authenticity of the sender of certain data. It is done with a special private key, and the public key is verifying the signature. This is especially important if the involved parties do not know one another. The DSA (= Digital Signature Algorithm) is a public-key system which is only able to sign digitally, not to encrypt messages. In fact digital signature is the main-tool of cryptography in the private sector. Digital signatures need to be given for safe electronic payment. It is a way to protect the confidentiality of the sent data, which of course could be provided by other ways of cryptography as well. Other security methods in this respect are still in development, like digital money (similar to credit cards or checks) or digital cash, a system that wants to be anonymous like cash, an idea not favored by governments as it provides many opportunities for money laundry and illegal transactions. If intellectual property needs to be protected, a digital signature, together with a digital timestamp is regarded as an efficient tool. In this context, the difference between identification and authentication is essential. In this context smartcards and firewalls are relevant, too. A lot of digital transactions demand for passwords. More reliable for authentication are biometric identifiers, full of individual and unrepeatable codes, signatures that can hardly be forged. For more terms of cryptography and more information see: http://poseidon.csd.auth.gr/signatures http://www.dlib.org/dlib/december97/ibm/12lotspiech.html http://www.cryptography.com/technology/technology.html http://www.cdt.org/crypto/glossary.shtml http://www.oecd.org//dsti/sti/it/secur/prod/GD97-204.htm

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Extract of AOL Time Warner’s Content Production and Distribution Holdings The following selection does not claim to present an exhaustive listing, but rather picks some of the company's most important assets. Due to the rapid developments in the world of media giants the list is also subject to changes. Cable TV Systems and Channels/Networks Time Warner Cable has 12.6 million subscribers in the U.S. and also runs 5 local 24-hour news stations. Cable TV channels/networks (some part-owned): HBO, HBO Plus, HBO Signature, HBO Family, HBO Comedy, HBO Zone, Cinemax, MoreMAX, ActionMAX, ThrillerMAX, HBO en Espa-ol, Comedy Central, Court TV, HBO Ole, HBO Asia, HBO Central Europe, CNN, CNN Headline News, CNN International, CNNfN, CNN/Sports Illustrated, CNN en Espa-ol, CNN Airport Network, CNN Radio, CNN Radio Noticias, CNN Interactive TBS Superstation, Turner Network Television, Cartoon Network, Turner Classic Movies, TNT Europe, Cartoon Network Europe, TNT Latin America, Cartoon Network Latin America, TNT & Cartoon Network/Asia Pacific, CNN+, n-tv Movies, TV, Video Production, and Movie Theaters Warner Bros. film studio Warner Bros. Television production studios Warner Bros. Home Video Turner worldwide Home Video Turner Pictures Castle Rock Entertainment movie production company New Line Cinema movie production company Warner Bros. film library Turner Film Library Hanna Barbera Cartoons Owns many movie houses, with over 1,000 screens, around the world Book Publishing Time Life Inc. Book-of-the-Month Club Warner Books Little, Brown and Company Oxmoor House Leisure Arts Sunset Books Magazines Time, People, Sports Illustrated, Fortune, Life, Money, Parenting, In Style, Entertainment Weekly, Cooking Light, Baby Talk, First Moments, Coastal Living, Health, Progressive Farmer, Southern Accents, Southern Living, Sports Illustrated, For Kids, Sunset, Teen People, Time for Kids, Weight Watchers, Mutual Funds, Your Company, Asiaweek, President, Wallpaper. Hippocrates Recorded Music Warner Music Group The Atlantic Group Elektra Entertainment Group Rhino Entertainment Sire Records Group Warner Bros. Records Warner Music International WEA Inc. WEA Corp. WEA Manufacturing Ivy Hill Corp. Warner Special Products Alternative Distribution Alliance Giant Merchandising Deals with record labels include: Maverick records Tommy Boy Sub Pop Qwest 143 Records Internet and New Media About 130 Websites including: CNN.com, AllPolitics.com, CNNSI.com, Time Digital, People, Southern Living, Sports Illustrated Turner New Media Online Services including: Compuserve, Netscape, Netcenter Pro Sports Teams and Promotions Atlanta Braves major league baseball team Atlanta Hawks NBA basketball team World Championship Wrestling Goodwill Games Other Six Flags entertainment/excursion parks Warner Bros. Movie World theme park Over 150 Warner Bros. stores, plus Turner Retail Group 25 % stake in Atari 14 % stake in Hasbro Business Connections with Other Media Companies Joint ventures, equity interests or major arrangements with Viacom, Sony, Bertelsmann, News Corp., Kirch, EMI, Tribune Co., and others.

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Java Applets Java applets are small programs that can be sent along with a Web page to a user. Java applets can perform interactive animations, immediate calculations, or other simple tasks without having to send a user request back to the server. They are written in Java, a platform-independent computer language, which was invented by Sun Microsystems, Inc. Source: Whatis.com

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Medieval universities and copying of books The first of the great medieval universities was established at Bologna. At the beginning, universities predominantly offered a kind of do-it-yourself publishing service. Books still had to be copied by hand and were so rare that a copy of a widely desired book qualified for being invited to a university. Holding a lecture equaled to reading a book aloud, like a priest read from the Bible during services. Attending a lecture equaled to copy a lecture word by word, so you had your own copy of a book, thus enabling you to hold a lecture, too. For further details see History of the Idea of a University, http://quarles.unbc.edu/ideas/net/history/history.html http://quarles.unbc.edu/ideas/net/history/his...

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Gottfried Wilhelm von Leibniz b. July 1, 1646, Leipzig d. November 14, 1716, Hannover, Hanover German philosopher, mathematician, and political adviser, important both as a metaphysician and as a logician and distinguished also for his independent invention of the differential and integral calculus. 1661, he entered the University of Leipzig as a law student; there he came into contact with the thought of men who had revolutionized science and philosophy--men such as Galileo, Francis Bacon, Thomas Hobbes, and René Descartes. In 1666 he wrote De Arte Combinatoria ("On the Art of Combination"), in which he formulated a model that is the theoretical ancestor of some modern computers.

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