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

Cloud computing assignmentq1 you need to prepare a short

Cloud Computing Assignment Q1. You need to prepare a short report that describes the benefits of Cloud Computing for smartphone-like devices apps development and growing in the marketplace. Your discussion should be 400- ...

Short papercompare and contrast cat 6 unshielded twisted

Short Paper Compare and contrast cat. 6 unshielded twisted pair (UTP), coaxial, and single mode fiber optic cabling types. Describe one or two of the advantages and/or disadvantages associated with using each cable type ...

Benefits of cloud-based office productivity softwarebased

Benefits of Cloud-based Office Productivity Software Based on what you have learned about using cloud-based office productivity software, create a 5-slide presentation to the department head or CEO to convince him or her ...

Short paperwan technologies paper research point-to-point

Short Paper 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 a ...

1 assume a system with two processors in series where each

1. Assume a system with two processors in series where each processor has an unlimited queue in front of it; also assume FIFO queue disciplines for both servers. We need to collect data on individual entity total time in ...

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 ...

Networking and server landscape of rays foodusing the

Networking and server landscape of Ray's Food. Using the Configuration Scenario Instructions, create a 1-page Systems Diagram in Microsoft Visio, or another diagramming tool, that shows the technical networking and serve ...

Threat management and disaster recovery final paper this is

Threat Management and Disaster Recovery Final Paper This is a two part assignment that will be submitted as one final paper Part 1 I would like you to complete a limited Risk Assessment for a fictional enterprise. This a ...

Write one paragraph only for each questions1- can a

Write one paragraph only for each questions. 1- Can a business survive in today's world without a website or a poorly maintained website? Why or Why not? 2- What's your biggest fear about using the Internet? Why? Can you ...

Network securitythe focus of the reseach paper is host

Network Security The focus of the reseach paper is Host Intrusion Detection Systems (HIDS) or AntiVirus Systems. Computer Virus creates major headaches for most organizations, as this list of 10 worst PC virus outbreaks ...

  • 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