Abstract rettelse?

<p>Hey ville lige h&oslash;rer om der var nogle der gider rette mit abstract? Jeg skriver om kryptering i det 20. &aring;hrhundrede og om RSA kryptering</p> <p>This paper examines encryption in the 20th century. It especially studies the RSA-cipher system and the math behind it. The paper shows an example on how to make a RSA-cipher system so that you can encrypt a secret message with a public key and then decrypt it with a secret key that both have been created. It also discusses the importance of cipher systems in the 20th century according to states, companies and the private people.<br /> To outline the history of cryptology throughout the 20th century the paper focuses on the development from it being only for military purposes, where the cipher systems were simple and easy to decrypt, to the public key cipher system that private persons also use today, which is much safer. To explain the RSA-cipher system the paper examines the structure of the system and demonstrates the mathematics in RSA and gives examples to make the theory more understandable. The RSA-cipher system example is made based on the theory in the previous paragraph and it&rsquo;s used to show that you can put the theory into practice. When the paper goes through the discussion it uses examples to describe the situation in the different cases. The main example is Phil Zimmerman and PGP and how his trail infected the world and started the debate of free encryption vs. government controlled encryption and protection of the legal rights.<br /> The paper concludes, against the background of the theory and the example, that the RSA-cipher system is insoluble. It&rsquo;s based on the prime factorization problem and finding the two primes is impossible in a reasonable matter of time. It&rsquo;s therefore safe to use in our society. The debate of whether or not free encryption should be allowed is a debate that will never find a definitive answer. But the paper concludes that the law will fluctuate between free encryption until a serious crime occurs and an encryption policy with limits until the authorities exploit their power and the people will demand free encryption back. And so it will go back and forth. <br /> &nbsp;</p> <p>P&aring; forh&aring;nd tak.</p>