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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Key-Systems As stated, telecommunication is seen as an unreliable media for transporting secret messages. Therefore today, cryptography is needed more than ever before, especially for e-commerce. Key cryptosystems try to provide more privacy. symmetric-key cryptosystems: The same key is used for both encryption and decryption. In this case the encipherer and the recipient of the message/text have to agree on a common key before the enciphering-process can start. And most of all they should trust each other. And exactly this is the main problem of this system: how to exchange the key without offering an opportunity for stealing it? In former times messengers or pigeons were doing the exchange of those keys. Symmetric-key systems make sense in small entities. If a lot of people are spread over a wide area and belong to the same network, distributing the keys starts getting complicated. Today, those cryptosystems get controlled by other keys, based on highly complex mathematical algorithms. some symmetric-key systems are: - DES (Data Encryption Standard), the standard for credit cards - Triple-DES, which is a variation of DES, encrypting the plaintext three times. - IDEA (International Data Encryption Standard) - blowfish encryption algorithm, which is said to be faster than DES and IDEA Security and confidence are the key-words for a popular key-system: As DES and its successors have been used for so many years and by many people without having been broken, they are considered safe - safer than others, not used that frequently, no matter whether they are actually safer or not. For further information see: http://www.sbox.tu-graz.ac.at/home/j/jonny/projects/crypto/symmetr/content.htm

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Adi Shamir Adi Shamir was one of three persons in a team to invent the RSA public-key cryptosystem. The other two authors were Ron Rivest and Leonard M. Adleman.

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Calculator Calculators are machines for automatically performing arithmetical operations and certain mathematical functions. Modern calculators are descendants of a digital arithmetic machine devised by Blaise Pascal in 1642. Later in the 17th century, Gottfried Wilhelm von Leibniz created a more advanced machine, and, especially in the late 19th century, inventors produced calculating machines that were smaller and smaller and less and less laborious to use.

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