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

Topic 1 wireless technologiescreate a short essay 1 to 3

Topic 1: Wireless Technologies Create a short essay (1 to 3 pages) that describes how you will set up a wireless network for the Nardi Pardy Corporation (a fictitious company). In this simple scenario, the company office ...

Technical paper risk assessmentglobal finance inc network

Technical Paper: Risk Assessment Global Finance, Inc. Network Diagram Above is the Global Finance, Inc. (GFI) network diagram. A hypothetical company, GFI has grown rapidly this past year and implemented a number of netw ...

Assignment designing compliance within the lan-to-wan

Assignment: Designing Compliance within the LAN-to-WAN Domain Note: Review the page requirements and formatting instructions for this assignment closely. Graphically depicted solutions, as well as the standardized format ...

Computer scienceunauthorized access to networks and the

Computer Science Unauthorized access to networks and the information they contain can present significant problems to an organization. Part of a good network improvement includes a review of system security and identific ...

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 ...

Lab questions1 when running snort ids why might there be no

Lab Questions 1. When running Snort IDS why might there be no alerts? 2. If we only went to a few web sites, why are there so many alerts? 3. What are the advantages of logging more information to the alerts file? 4. Wha ...

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 ...

Current attack vectors and secure network designa friend

Current Attack Vectors and Secure Network Design A friend has recently started a business that has a large amount of intellectual property that he wants to ensure is kept secure and confidential. He plans to hire 75-100 ...

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 ...

Discussion window media servicebulldiscuss sharepoint

Discussion Window Media Service • Discuss SharePoint services and various SharePoint options as well as Windows Media Rights Management to handle the requirements of different enterprise scenarios, such as one that requi ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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