Symmetric cryptography, Other Subject

Assignment Help:

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.


Related Discussions:- Symmetric cryptography

New media, New Media: We define "new media" as interactive forms of commun...

New Media: We define "new media" as interactive forms of communication that use the Internet, including podcasts, RSS feeds, social networks, text messaging, blogs, wikis, virtual

Utilitarian point of view and kantian-type analysis, Question 1: "There...

Question 1: "There is only one social responsibility of business: to use its resources and engage in activities designed to increase its profits" (Milton Friedman, 1970) (a

Term project, i need to do term project and i am running out of time. if yo...

i need to do term project and i am running out of time. if you guys do it for me how much would you charge??

EXCEL , I need help with excel

I need help with excel

Advantages of internet - services, Services Many services are now provi...

Services Many services are now provided on the internet such as job seeking, purchasing tickets for your favorite movies, online banking, guidance services on array of topics e

Please check this small paragraph, To: The General hospitals From: Salma ...

To: The General hospitals From: Salma Umme, 7717 hough ave, Cleveland, oh-44103 Date: March 7, 2012 Subject: Some issues that I feel is important in my Nursing Area Throughout

Write a long note on ecosoc, Question 1 Write a long note on Human Rights ...

Question 1 Write a long note on Human Rights and Female Foeticide (Introduction and elaboration of women and their rights. Prevention of sex determination in USA Question 2 W

Examine the role of the community, (a) How far can schools institutionalis...

(a) How far can schools institutionalise local action through transformational empowerment and social cohesion and help low attaining schools in socially disadvantaged areas? Give

Microeconomics, There are 2 brands of cell phones that are almost identical...

There are 2 brands of cell phones that are almost identical except for some minor features: the A-Phone and the Pomegranate. Part I Draw the demand curve for the A-Phone. Explain

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd