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:
TEXTBLOCK 1/4 // URL: http://world-information.org/wio/infostructure/100437611776/100438659015
Today the talk about the so-called "information society" is ubiquitous. By many it is considered as the successor of the industrial society and said to represent a new form of societal and economical organization. This claim is based on the argument, that the information society uses a new kind of resource, which fundamentally differentiates from that of its industrial counterpart. Whereas industrial societies focus on physical objects, the information society's raw material is said to be knowledge and information. Yet the conception of the capitalist system, which underlies industrial societies, also continues to exist in an information-based environment. Although there have been changes in the forms of manufacture, the relations of production remain organized on the same basis. The principle of property.
In the context of a capitalist system based on industrial production the term property predominantly relates to material goods. Still even as in an information society the raw materials, resources and products change, the concept of property persists. It merely is extended and does no longer solely consider physical objects as property, but also attempts to put information into a set of property relations. This new kind of knowledge-based property is widely referred to as "
TEXTBLOCK 2/4 // URL: http://world-information.org/wio/infostructure/100437611725/100438659429
As we have seen in the latest wars and in art, propaganda and disinformation are taking place on all sides. No contemporary political system is immune against those two. All of them utilize them if it seems to be useful and appropriate. Democracy, always pretending to be the most liberal and most human system is no exception in that - especially not a good one.
Democracy might give us more chances to escape censorship - but only as long as the national will is not disturbed. Then disinformation and propaganda come in ...
NATO-members gave us a very sad example for this during the Kosovo crisis.
It is our hunger for sensations and glory, for rumors and shows which makes disinformation so powerful. Many books and WebPages give informations about how to overcome disinformation and propaganda - but in vain. We somehow seem to like it - or at least we need it for getting through our interests.
There is a lot what we could try to do, but very little that will succeed as people prefer to believe that disinformation is an issue of the past.
At this moment the only appropriate measure to get rid of disinformation's influence seems to be the putting side by side of different aspects and ideas, especially of opinions telling the contrary, or are at least not the same. In any other case the model will probably commit the crime it is fighting against. Because how would we be able to know?
TEXTBLOCK 3/4 // URL: http://world-information.org/wio/infostructure/100437611661/100438658764
An important change in the development of computers occurred in 1948 with the invention of the
Stretch by
Throughout the early 1960s there were a number of commercially successful computers (for example the IBM 1401) used in business, universities, and government and by 1965 most large firms routinely processed financial information by using computers. Decisive for the success of computers in business was the stored program concept and the development of sophisticated high-level
TEXTBLOCK 4/4 // URL: http://world-information.org/wio/infostructure/100437611663/100438659439
At the beginning of the story of today's global data networks is the story of the development of
In 1955 President Eisenhower announced the USA's intention to launch a
In the same year the USA launched their first
Today's