Symmetric encryption algorithms

Assignment Help Computer Network Security

Reference no: EM133323

QUESTION 1:

(a) What are the indispensable ingredients of a symmetric cipher?

(b) What are the two basic meanings used in symmetric encryption algorithms?

(c)How many keys are needed for two people to communicate via a cipher?

(d) What is the disparity between a block cipher and a stream cipher?

(e) What are the two approaches to attacking a cipher?

(f) What is the disparity between an unconditionally secure cipher and a computationally secure cipher?

(g) Briefly express the Caesar cipher?

QUESTION 2:

(a) What is the dissimilarity between diffusion and confusion?

(b) Which parameters and design choices determine the actual algorithm of a feistel cipher?

(d) File the types of cryptanalytic attacks.

(e) What is the disparity between a mono alphabetic cipher and a poly alphabetic cipher?

QUESTION 3

(a) Briefly illustrate

i. Mix Columns.

ii. Add Round key.

(b) Confer the Key Expansion Algorithm.

QUESTION 4

(a) Why is it not enviable to reuse a stream cipher key?

(b) Evaluate and contrast link and end-to-end encryption?

(d) What are the overhauls provided by PGP services?

Reference no: EM133323

Questions Cloud

Access control list : DNS Cache Poisoning attack, Turtle Shell Architecture,

Why might a best fit approach be more helpful : What are the severe limitations of the best practice approach What is meant by the best fit approach to the design and development of a human resource strategy Why might a best fit approach be more helpful

Define service recovery : Define service recovery Discuss the impact of the service recovery efforts on customer loyalty

Turtle shell architecture : Turtle Shell Architecture, zero-byte representation, Access Control List, DNS Cache Poisoning attack, 16-pass iterative and 9-pass recursive PHP function

Symmetric encryption algorithms : block cipher and a stream cipher, Caesar cipher, cryptanalytic attacks, mono alphabetic cipher and a poly alphabetic cipher, Mix Columns, Add Round key, PGP services, traffic padding, contrast link and end-to-end encryption

Discretionary and mandatory access control : Logic bombs, War dialing, Ping of death attack, steganography, RSA scheme, digital signature, A chain of certificates, A certificate revocation list, A trust anchor, asymmetric algorithm used by PGP, IPSec mode, IP virtual Private Networks

Network security : SLE, ARO, and ALE, behavioural biometric technology, Enterprise Information Security Policy, Issue Specific Security Policy, System Specific Security Policy, firewalls protect network, creating a DMZ during firewall implementation, use of SSL to se..

Digital forensic investigation : computer security incident, Trojan Defence, anti-forensics technique, chain of custody, FAT file system, SQLOracleHacks.txt, SQLOracleAttacks.txt, SQLInjection.html

Computer security incident : Locard's Exchange Principle, electronic crime scene, modules or DLLs a process, router forensics, Configuration and user, Local logs process and memory, Network Information, File system, Portray the NTP vulnerability of some Cisco IOS routers

User Account

All Pages