According to social critic and philosopher
The system of the public sphere is extremely complex, consisting of spatial and communicational publics of different sizes, which can overlap, exclude and cover, but also mutually influence each other. Public sphere is not something that just happens, but also produced through social norms and rules, and channeled via the construction of spaces and the media. In the ideal situation the public sphere is transparent and accessible for all citizens, issues and opinions. For democratic societies the public sphere constitutes an extremely important element within the process of public opinion formation.
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During the last 20 years the old
"Digital divide" describes the fact that the world can be divided into people who
do and people who do not have access to (or the education to handle with) modern information technologies, e.g. cellular telephone, television, Internet. This digital divide is concerning people all over the world, but as usually most of all people in the formerly so called third world countries and in rural areas suffer; the poor and less-educated suffer from that divide.
More than 80% of all computers with access to the Internet are situated in larger cities.
"The cost of the information today consists not so much of the creation of content, which should be the real value, but of the storage and efficient delivery of information, that is in essence the cost of paper, printing, transporting, warehousing and other physical distribution means, plus the cost of the personnel manpower needed to run these `extra' services ....Realizing an autonomous distributed networked society, which is the real essence of the Internet, will be the most critical issue for the success of the information and communication revolution of the coming century of millennium."
(Izumi Aizi)
for more information see:
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~ 1900 BC: Egyptian writers use non-standard
1500 an enciphered formula for the production of pottery is done in Mesopotamia
parts of the Hebrew writing of Jeremiah's words are written down in "
4th century
487 the Spartans introduce the so called "
170
50-60
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To be able to participate in community life and make political choices citizens heavily rely on information. They need to know what is going on and the options that they should weigh, debate and act upon. An essential element for a functioning public sphere therefore is information.
Whereas formerly communication mostly happened on a face-to-face basis in large and complex societies (mass) media have evolved as the principal source of information. They act as a transport medium for the information necessary for a citizen's participation in the public sphere. Ideally there should be a wide range of media, that represent the diverse opinions and viewpoints on issues of public interest existent in a society and which are independent of the state and society's dominant economic forces.
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"All nature is merely a cipher and a secret writing."
Blaise de Vigenère
In the (dis-)information age getting information but at the same time excluding others from it is part of a power-game (keeping the other uneducated). The reason for it eventually has found an argument called security.
Compared to the frequency of its presence in articles, the news and political speeches security seems to be one of the most popular words of the 90's. It must be a long time ago when that word was only used for and by the military and the police. Today one can find it as part of every political issue. Even development assistance and nutrition programs consider it part of its work.
The so-called but also real need for information security is widespread and concerning everybody, whether someone uses information technology or not. In any case information about individuals is moving globally; mostly sensitive information like about bank records, insurance and medical data, credit card transactions, and much much more. Any kind of personal or business communication, including telephone conversations, fax messages, and of course e-mail is concerned. Not to forget further financial transactions and business information. Almost every aspect of modern life is affected.
We want to communicate with everybody - but do not want anybody to know.
Whereas the market already depends on the electronic flow of information and the digital tools get faster and more sophisticated all the time, the rise of privacy and security concerns have to be stated as well.
With the increase of digital communication its vulnerability is increasing just as fast. And there exist two (or three) elements competing and giving the term digital security a rather drastic bitter taste: this is on the one hand the growing possibility for criminals to use modern technology not only to hide their source and work secretly but also to manipulate financial and other transfers. On the other hand there are the governments of many states telling the population that they need access to any kind of data to keep control against those criminals. And finally there are those people, living between enlightening security gaps and at the same time harming other private people's actions with their work: computer hackers.
While the potential of global information is regarded as endless, it is those elements that reduce it.
There is no definite solution, but at least some tools have been developed to improve the situation: cryptography, the freedom to encode those data that one does not want to be known by everybody, and give a possibility to decode them to those who shall know the data.
During the last 80 years cryptography has changed from a mere political into a private, economic but still political tool: at the same time it was necessary to improve the tools, eventually based on mathematics. Hence generally cryptography is regarded as something very complicated. And in many ways this is true as the modern ways of enciphering are all about mathematics.
"Crypto is not mathematics, but crypto can be highly mathematical, crypto can use mathematics, but good crypto can be done without a great reliance on complex mathematics." (W.T. Shaw)
For an introduction into cryptography and the mathematical tasks see:
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the original, legible text
Headquartered in San Jose, USA, AboveNet Communications is a
http://www.above.net
the study of breaking others' codes to transform a message back into a legible form without knowing the key from the beginning
b. July 13, 1527, London, England
d. December 1608, Mortlake, Surrey
English alchemist, astrologer, and mathematician who contributed greatly to the revival of interest in mathematics in England. After lecturing and studying on the European continent between 1547 and 1550, Dee returned to England in 1551 and was granted a pension by the government. He became astrologer to the queen, Mary Tudor, and shortly thereafter was imprisoned for being a magician but was released in 1555. Dee later toured Poland and Bohemia (1583-89), giving exhibitions of magic at the courts of various princes. He became warden of Manchester College in 1595.
an algorithm for bringing a legible message into an illegible form. There has to exist some sort of code book to encode/decode it.
DARPA (Defense Advanced Research Projects Agency) is the independent research branch of the U.S. Department of Defense that, among its other accomplishments, funded a project that in time was to lead to the creation of the Internet. Originally called ARPA (the "D" was added to its name later), DARPA came into being in 1958 as a reaction to the success of Sputnik, Russia's first manned satellite. DARPA's explicit mission was (and still is) to think independently of the rest of the military and to respond quickly and innovatively to national defense challenges.
In the late 1960s, DARPA provided funds and oversight for a project aimed at interconnecting computers at four university research sites. By 1972, this initial network, now called the
http://www.darpa.mil