Compare and contrast between block and stream ciphers, Computer Network Security

Assignment Help:

Problem 1

Solve the following Caesar cipher by showing your working: EM KIUM EM AIE EM KWVYCMZML

Problem 2

Compare and contrast between block and stream ciphers, listing the relative advantages and disadvantages.

Problem 3

(a) What the 3 main steps in DES encryption?

(b) Explain how triple DES works.

Problem 4

Critically assess the given statement:

"The longer the key, the stronger the encryption." Give examples and justifications.

Related Discussions:- Compare and contrast between block and stream ciphers

Operation of the signature based intrusion detection system, Question : ...

Question : (a) State whether the following statement is FALSE or TRUE: It is always better to have various access points to the Internet so that if a hacker takes one down you

Quote, How much would it cost to have a project completed by tomorrow night...

How much would it cost to have a project completed by tomorrow night?

Difference between synchronous tdm and statistical tdm, Question (a) A CRC...

Question (a) A CRC is constructed to generate a 4-bit FCS for an 11-bit message. The divisor polynomial is X 4 + X 3 + 1 (i) Encode the data bit sequence 00111011001 using po

It service support within the itil framework, Problem (a) IT Service Suppo...

Problem (a) IT Service Support within the ITIL framework is divided in a number of processes. Compare and contrast the following processes: i. Incident Management and Problem M

Risk control strategies-risk management, Risk Control Strategies Once th...

Risk Control Strategies Once the ranked vulnerability risk worksheet has created, they should choose one of following 4 strategies to control each risk: • Apply safeguards wh

Spambot detection - spam mail, Spambot Detection: The previous studie...

Spambot Detection: The previous studies in this field have focused on content and meta-content based features. The main assumption in this area of spam detection of late is

Growth of lan technology, GROWTH OF LAN TECHNOLOGY The production of s...

GROWTH OF LAN TECHNOLOGY The production of shared communication channels (LANs) started in 1960s and early 1970. The basic idea behind was to reduce the number of connectio

Describe how a cellular network works, Problem 1 . Show various features of...

Problem 1 . Show various features of a 1G network Total three features for each feature of 1G Problem 2. Describe how a cellular network works with functional block diagram

Softbank theft of consumer data -information security, Example : Softbank –...

Example : Softbank – theft of consumer data for extortion Softbank of Japan offers broadband Internet services across Japan through 2 subsidiaries – Yahoo! BB and Softbank BB. I

Firewall architectures-screened subnet architecture, Screened Subnet Archit...

Screened Subnet Architecture This setup provides an extra security layer to screened host architecture by creating a perimeter subnet which further isolates internal network f

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages