Explain protocol for sending encrypted message

Assignment Help Computer Network Security

Reference no: EM1366953

Q1) Consider the following protocol for sending an encrypted message from Alice to Bob in the presence of a Key Distribution Center (KDC).

Alice sends to KDC { Alice;Bob;E_KDC(R) }. That is, her identity, Bob's identity and also a random session key encrypted with the KDC's public key (of which it has a trusted copy).

The KDC decrypts the random session key R and then encrypts the same with Bob's public key (of which it has a trusted copy) and sends to Alice { E_Bob(R) }.

Alice sends to Bob E_R(M), that is the message M encrypted with the random session key R and also { E_Bob(R) } which it received from the KDC.

Bob decrypts { E_Bob(R) } to get R and then ER(M) to get M.

Reference no: EM1366953

Questions Cloud

Examples of conflict as a project manager : Share three examples of conflict that you have experienced (or can think of) in a project. Also, discuss how you would attempt to resolve those conflicts if you were the project manager.

Interpreting elasticity coefficients : Price elasticity of demand and Income elasticity of demand What impacts will have the construction of a new natural gas company on oil demand. And on electricity demand? Justify.

New technologies using sophisticated anti-copying measures : Which is more probably to be effective in protecting intellectual property in digital media like CDs and DVDs: tougher copyright laws or new technologies incorporating more sophisticated anti-copying measures?

Restructure of united state health care delivery system : As the country focuses on the restructure of the U.S. health care delivery system, nurses will carry on to play an important role.

Explain protocol for sending encrypted message : Consider following protocol for sending an encrypted message from Alice to Bob in presence of Key Distribution Center (KDC).

Strategic failures in the health care or biotechnology : Search of media reports on apparent strategic failures in the health care or biotechnology industries (e.g. divestment of a business, layoff of a large proportion of the workforce, very large losses over several years).

Determine unethical the controller actions : Puebla Corporation is a medium-sized wholesaler of automotive parts. It has ten stockholders, who have been paid a total of $1 million in cash dividends for 8 consecutive years.

Job satisfaction-sample question : Job Satisfaction - what do you think makes people want to feel satisfied on the job and therefore more productive?

Calculate rsa signature on long message by computing mod : Calculate RSA signature on long message by ?rst computing what the message equals mod n, for some ?xed n and then signing this computed value only. Why or why not?

User Account

All Pages