Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

problem 1:

a) Using Vigenere cipher and given the key abc, find out the ciphertext for the message:

Simplicity

Only the 26 lower-case alphabetical characters are used in the messages.

b) Compare and contrast Data Encryption Standard (DES) with AES (Advanced Encryption Standard) with respect to:

i) Their classification.
ii) Their encryption or decryption structure and algorithm.
iii) Their cryptographic strength.
iv) Types of attacks.
v) Hardware or software implementation.

c) Consider a Diffie-Hellman scheme with a common prime q = 11 and a primitive root α = 2.

i) If user A has public key YA = 9, what is A's private key XA?
ii) If user B has public key YB = 3, what is the shared secret key K, shared with A?
d) What are the characteristics of the ‘one-time pad’ cryptosystem as compared to the Vigenere Cipher?

Give one advantage and two problems with one-time pad cryptosystems.

e) S/MIME (Secure/Multipurpose Internet Mail Extensions) is a standard for public key encryption and signing of e-mail encapsulated in MIME.  What are the cryptographic security services for electronic messaging applications given by S/MIME?

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96468

Have any Question? 


Related Questions in Computer Network & Security

Networking trendsnetworking trends paper in this paper you

Networking trends. Networking Trends Paper: In this paper, you will research and report on network design and management trends over the last three years (present year minus 2) in the areas of virtualization, security, h ...

Lab assignment- assessment questions1 explain the two

Lab Assignment- Assessment Questions 1. Explain the two different types of attacks that can be performed in Cain and Abel to crack user account passwords. Which do you think is the most effective and why? 2. Compare and ...

Discussiontroubleshooting please respond to the followingas

DISCUSSION Troubleshooting" Please respond to the following: ?As explained throughout the text, troubleshooting is a structured methodology that requires personal fine-tuning. With that in mind, suppose a user at your co ...

Module discussion questionpersonal factors such as anger

Module Discussion Question Personal factors, such as anger, revenge, and lack of rewards and recognition, may increase the risk of someone stealing from or spying against employees. Organizations should apply adequate se ...

Assignmentsummarize the principles of public-key

Assignment Summarize the principles of public-key encryption. In what way is an unprotected idle PC a danger to the internet? Suppose a PC owner leaves the PC connected to the Internet where it ultimately is used by anot ...

Or the purpose of the first part of this project you are

Or the purpose of the first part of this Project, you are still the InfoSec Specialist for the Greenwood Company. Consider this project a continuation of the work you performed in Projects 1 and 2. After seeing you searc ...

Develop a network security plan for a medical record

Develop a Network Security Plan for a Medical Record Company. As a network administrator you are required to develop a brand new security plan. The medical record company consists of the following individuals: Doctors, N ...

Assignmentwan technologies paper research point-to-point

Assignment WAN Technologies Paper: Research Point-to-Point (dedicated), Packet Switched, and Circuit Switched WAN protocols/circuits/types. Define each protocol and describe at least two data transmission technologies as ...

Security in wireless lans wans and telephonyactions for

Security in Wireless LANs, WANs, and Telephony Actions for 'Security in Wireless LANs, WANs, and Telephony A very challenging issue in IT industry is wireless security. Because of the specific technical principles involv ...

Assignment services in your arearesearch dsl and cable

Assignment: Services in Your Area Research DSL and cable modem services available closest to your community. You may use neighboring communities or regions if your community does not have access to DSL or cable modem ser ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen