Symmetric cryptography, Other Subject

Symmetric Cryptography

Until recently, symmetric encryption techniques were used to secure information transmitted on public networks. Traditional, symmetric cryptographic systems are based on the idea of a shared secret. In such a system, two parties that want to communicate securely first agree in advance on a single "secret key" that allows each party to both encrypt and decrypt messages.

Symmetric cryptography has several drawbacks. Exchanging secret keys is awkward in large networks. Furthermore, the distribution of secret keys requires both senders and recipients to trust, and, therefore, to be recognizable with, every person they communicate with firmly. Also, symmetric systems need a secure channel to deal out the "secret" keys in the first place. If there is certainly such a secure channel, why not use it to send the entire secret message?

In today's Web-based systems concerning many transitory and participant's interactions with strong cryptography necessities, such symmetric key-based systems are highly not practical as a means for approving upon the necessary secrets to begin communicating firmly. This problem, the key contract, or key allocation problem, is part of a larger problem that is middle to the modern understanding of cryptographic systems-the key management problem (described in greater feature later in the chapter). Together, they represent the primary challenge in designing efficient cryptography systems for current computing systems. Symmetric key encryption plays an important role in the SSL protocol, along with asymmetric public key encryption.

Posted Date: 10/12/2012 8:18:02 AM | Location : United States







Related Discussions:- Symmetric cryptography, Assignment Help, Ask Question on Symmetric cryptography, Get Answer, Expert's Help, Symmetric cryptography Discussions

Write discussion on Symmetric cryptography
Your posts are moderated
Related Questions
Question 1: Discuss the ‘criteria-based evaluation' approach to the selection of areas for conservation. Question 2: Outline the conservation management undertaken on t

choose an economic theory of your choice, quantify it, assign figures to it and then the regression process

Perform a White test for heteroskedasticity using auxiliary regressions. Attach your results, and write out the form of the test as well as the value of the statistic and its inter

Write a essay on what you deem to be the judgement of "the search for god and life''s meaning" in the movie, Life of pi

Future Trends in Integrated Library Systems: The definition of an integrated system is starting to change from a system that shares bibliographic records amongst modules and local

The pharmacist evaluates the available prescription before it can be filled and will review the client's allergies as well as the drug facts. The evaluation involves reviewing pote

ELECTRONIC DATA INTERCHANGE Electronic Data Interchange (EDI) refers to the planned transmission of data between organizations by electronic funds. It is used to transmit elect

what are the challenges faced when cataloguing periodical publications?

Question 1: (a) List any ten rules for making good design. (b) Elaborate on any five of those. Give visual examples as appropriate to illustrate each rule and use written

Help with the ACT