Public Key Cryptosystems and Applications
Introduction
Cryptography is the term used to refer to the practice of studying hidden information. The public-key cryptography, on the other hand, pertains to a system of cryptography which requires two separate keys in order to access hidden information. While the locking key is used to encrypt the plaintext, the unlocking key is used to decrypt the cyphertext even if it is evident that none of these keys can be used alone nor can either of the two perform both duties of locking and unlocking.
Public-Key Cryptosystems and Applications
According to Piper and Sean (2002), the public key cryptography involves the publication of one key while holding the other key in privacy, where each end generates a pair of keys kin wherein one is used for the encryption of essential information while the other one is used for the decryption of the same information. Apparently, the parties involved generate a mathematically linked key pair in which the encrypting key transforms information into an unreadable form which can only be decrypted by the different matching key.
Evidently, the publication of a matching key therefore empowers any individual that is able to access the key to transform information into what he can read. While the locking key is the one that is made public, this gives license to the general pubic to render communication to the holder of the private key which is used as a signature verifier for the information received from the general public (Rice, 2009).
According to Clawson (1996), the application of this system has been made unique in order to ensure that information is only accessible to the parties involved and that accountability and safety are ensured by the fact that each party has to consult the other while accessing important information which needs to be either encrypted or decrypted. Apparently, the distinction technique which is used in this system employs an asymmetric system of key logarithms such that the key that is used to lock or encrypt information is not the one that is used to unlock or decrypt information.
Although the public key id widely distributed, this ensures a wide range of communication from the general public to the recipient while the private unlocking key is only known to the recipient in order to ensure the safety of sensitive and important information. As explained by Foerstel (1993), even as it is evident that the two keys are related mathematically, the public is widely used by anyone who has access to it in converting information in an unreadable format in order to ensure that it can only be accessed by the person holding the private key whose purpose is to decrypt any encrypted information.
According to Moore (1995), the sender’s key which is made public is normally made available to the general public. Because of this, anyone who has access to the sender’s key verifies the encrypted information, and consequently, the verification sign is used to determine the person that is associated with the sender’s public key as well as the verifier of the encrypted message which had not yet been tampered with. This verification is rendered through digital signatures provided by the sender, and the content is only accessible to the recipient possessing the private key. In order to deliver the encrypted message to the recipient, the public key which entails a locked mailbox is exposed to the public by locating it in the street address. Thus, anyone knowing the street address is allowed to go and drop a message in the mailbox slot, which is only accessible to the person having the key to unlock the mailbox (Andress, 2003).
Conclusion
It is therefore evident that the public-key cryptosystems involves the use of two different matching keys essential for locking and unlocking information. The public key, which locks or encrypts information, is to verify information that is dropped in the locked street address that only the receiver who holds the private decrypting key can unlock to access the encrypted information.
References
Andress, A. (2003). Surviving Security: How to Integrate People, Process and Technology. Auerbach Publications. Boca Raton.
The scope of this book includes security studies in business ventures. The book particularly provides a description of the various methods through which the general public can be integrated in the system of policing and security maintenance by use of technology. A statement describing his publication details renders his work to be dependable. Apparently, his other works in the similar field shows that the author isan expert infield. Although in this particular article he has given a description of how the system works, Andress has written a wide range of published articles which do not only cover cryptosystems but on the other hand they look at public policing as a way of enhancing security. This article which is a published book purely looks at cryptosystems. The author has however provided supportive evidence from other authors among whom is Moore. Apparently, this article is relevant in this area of research since Andress has provided systematic approaches in enhancing security. He has also presented cryptosystems as part of the methods which adapt technology to integrate security systems with the general public. It has given a description of how the public and private keys work in alternation. The author has rendered authority for the employability of his ideas in enhancing security in different organizations but he has prohibited the users who do not have patent rights from photocopying or other wise attaining unauthorized copies.
Clawson, C.C. (1996). Mathematical Mysteries: The Beauty of Magic and Numbers. Pursue Books. Cambridge
This is magazine article which gives a description of how the cryptosystems are established. Basically, the scope of this article includes the broader view of security issues in sensitive government departments. In this article, Clawson has shown specific procedures in which the mathematical codes in both the locking and the unlocking key are related. Evidently, the author has written other articles which talk about cryptosystems and although this particular article is magazine based, other articles are journals which have been published. Apparently, the author is an expert in this field as all his articles talk about this particular approach to security enhancement and although this specific article explains how cryptosystem works, the author has gone further to explain how this process can be employed in different entities which may employ different approaches depending on how crucial their operations are. Evidently, the information provided by the author in this article is reliable. He not only has provided his own points of view but n the other hand, he has provided reliable evidence particularly from the US federal government where this system has widely been employed. The author holds a PhD degree and as such he is bound to hold reliable skills applicable in the field of research. The author has however not written any other articles related to the topic. This article is not a scholarly journal but a published book with a list of other scholarly articles from which the author has drawn his reliable evidence. The content of his book is reliable in that it does not only provide a description how this system is developed but on the contrary, he looks into a wide range of views on areas where the system can be employed, the various ways in which the system can be advanced from one level of technology to another as well as a definition of various precautions which might pose the potential security to a threat. The content of the article raises relevance of the article in the area of research in that it defines the mathematical formula through which the locking and the unlocking systems are developed.
Foerstel, H.N. (1993). Secret Science: Federal Control of American Science and Technology. Praeger Publishers. Westport.
Moore, M.S. (1995). The Role of Cryptography in Network Security. Business Communications Review. Vol. 25, September 1995.
This is a business article that has been written by Moore to describe a more scientific and technology based approach in enhancing security particularly in business. Although this article is the first published work by the author, he has written other unpublished contribution to business related security. Even though the article has been written in relation to American based business, the concepts included therein can be implied into any other business from other parts of the globe. The author has generally sought to render ideas to business entity on how they can enhance security within their enterprises, but it is equally evident that the ideas contained therein can be applicable in other institutions since he has only given generalized ideas of how public key approach to security can work. Although the author has looked at just one point of how this process can work, he has supported it with facts and evidence from various business enterprises particularly from china. Although the author has provided evidence from China and even though is other articles have been published, this particular article may not be reliable. The author has not provided a list of supportive scholarly journals. On the other hand, the author has only looked at only one point which may not provide enough evidence on issues related to security.
Piper, F. & Sean, M. (2002). Cryptography: A Very Short Introduction. Oxford University Press. England.
Rice, B. et al. (2009). The Elgamal Cryptosystem on the Ti-83. Journal of Mathematics and Computer Education. Vol. 43.
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