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

Knowledge-Based Decision Support (Intelligent Guidance) Appl, Suggested Pap...

Suggested Paper Outline Organization Description • Overview • Description - Department / Operational Area Studied Detail Definition of Situation / Problem / Opportunity • Backgroun

Server operating systems, Server Operating Systems A number of well-lik...

Server Operating Systems A number of well-liked operating systems for servers - such as FreeBSD, Solaris, and Linux  are derived from or are alike to UNIX. UNIX was initially a

Institution, Why have schools endured over time?

Why have schools endured over time?

Student from Denmark, Hello I''m a student from Denmark. I write pretty go...

Hello I''m a student from Denmark. I write pretty good assignments but my gramma isn''t so good allways. Could I send a whoule taks to you on say 1-3 pages, and would you make the

Apply relevant legislation and guidance - law, Jim and Maureen Stewart live...

Jim and Maureen Stewart live with their two children, Hamish aged 11 and Alexandra aged 13, in a council owned property within an inner London borough. Jim has a long standing diag

Options for trading between businesses and consumers, Question : (i) O...

Question : (i) Outline the main options for trading between businesses and consumers. (ii) Outline the reasons why a business may wish to adopt e-commerce. (iii) De

Writing , i have 3 pages reflection paper and i dont know how to do it

i have 3 pages reflection paper and i dont know how to do it

Responsible for bacterial motility, 1.  How does true motility differ from ...

1.  How does true motility differ from Brownian movement? 2.  What morphological structure is responsible for bacterial motility? 3.  Why is a wet preparation discarded in di

Applications of data encryption standard, Applications- Data encryptio...

Applications- Data encryption (cryptography) is utilized in a variety of environments and applications. The exact utilization of encryption and the implementation of the DES w

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