Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

1) In real world, driver licenses are used to do authentication. Describe why a scanned-in digital copy of the driver license can’t be used by the server to authenticate owner (of the driver license) and let him login into the server?

2) Both encryption algorithms and hash algorithms transform messages, but why do encryption algorithms always need a key while hash algorithms do not?

3) Propose one method which uses a clock to generate one-time passwords. Describe your method with sufficient details.

4) Time-synchronized authentication could handle which of the following threats. Select all the threats that time-synchronized authentication could handle: __________

A) The long-term password is stolen by the hacker
B) Some used one-time passwords are stolen by the hacker
C) Replay attack
D) The clock is stolen
E) The hand-held authenticator is stolen

5) In challenge-response authentication, both the User ID (i.e., message 1) and the Challenge (i.e., message 2) are in cleartext, but why is challenge-response authentication still a secure authentication method that can defeat replay attacks? Please describe your reason with sufficient details.

6) Suppose Alice uses S/Key and a seed x to generate 200 one-time passwords for her to login into the EBay server. Please answer the following problems:

6.1) What is the 106th password that will be used for Alice to login into the EBay server? Please justify your answer with sufficient details.

6.2) When Alice logins into the server the 6th time (i.e., when the 6th password used to login is used by Alice), what is stored in the EBay server’s password file? Please justify your answer with sufficient details.

6.3) After the 22nd password used to login into the server is used by Alice, Mallory, the bad guy, steals her 87th password. Among the 200-22=178 passwords left for Alice to use, how many can still be used by Alice without worrying about attacks? Please justify your answer with sufficient details.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M94620
  • Price:- $80

Guranteed 48 Hours Delivery, In Price:- $80

Have any Question? 


Related Questions in Computer Network & Security

In order to provide for the new services at the akron ohio

In order to provide for the new services at the Akron, Ohio facility, the site must be added to the existing domain and configured. Create a security matrix spreadsheet and security strategy summary. Include the user rol ...

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 ...

Assignmentyou have been asked by a local charity retail

Assignment You have been asked by a local charity retail organization to install a network in its downtown office. It currently has seven PCs running Windows XP Home Edition. They are configured as follows: Pentium 4 at ...

Project infrastructure and securitythis assignment consists

Project: Infrastructure and Security This assignment consists of two sections: an infrastructure document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of t ...

1 when an organization undertakes an infosec-driven review

1. When an organization undertakes an InfoSec-driven review of job descriptions, which job descriptions must be reviewed? Which IT jobs not directly associated with information security should be reviewed? 2. List and de ...

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 ...

Technical paper project disseminating organizational it

Technical Paper Project: Disseminating Organizational IT Security and Troubleshooting Best Practices Part 1 Write a ten to fifteen page paper in which you analyze and solve the following issues: Imagine you are a senior ...

Assignmentyou have been hired as the chief security officer

Assignment You have been hired as the Chief Security Officer for a local University. For this role you will be responsible for establishing and maintaining an enterprise wide information security program to ensure that a ...

Pros amp cons of very simple vs very planned networkwrite a

Pros & Cons of Very Simple Vs Very Planned Network Write a 3-5 page report that discusses the pros and cons of very simple plans versus detailed plans, although the standards mandate very specific requirements for the pl ...

Assignment description1overview of the assessmentthe

Assignment Description 1 Overview of the assessment: The purpose of this assignment is to develop skills to independently think of a situation and Apply skills to analyze complex problems in network security under superv ...

  • 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