Cryptography – Week #6 Assignment 1

CrypTool and Diffie-Hellman Exchange

Go to http://www.cryptool.org/ and click on CrypTool Online.

Use different methods to encrypt messages, and then try to use the analysis tools to analyze the entropy such as floating frequency, histogram, N-Gram, autocorrelation, and periodicity, etc. Also try to use symmetric key ciphers such as DES and asymmetric ciphers such as RSA, DH, etc.

Capturing the Screen Image

· Press the PrntScn key to copy whole screen to the clipboard.

· Copy the image into a word processing file.

· Save it with the filename YourName_IS461_CrypTool.

Analysis

· Compare and contrast the different methods you used based on the analysis tools.

· Note the implications of any differences.

Reflection

· What are some of the benefits to using this product? What are some of the risks? Include this in your lab write up.

· How was your experience with this? Did you have any issues?

Turning in your Project

· Include these things with your file:

o A lab write up answering the questions in the reflection section.

o The images you captured above, as an attachment

· Submit to the dropbox.

In addition to completing the CrypTool Lab, also submit the following:

Solve problem 10.1 on page 319 and solve problem 10.3 on page 319 of the textbook. Show all required work and include a short paragraph that provides your reasoning for how you arrived at your answer. Also include a paragraph about how the content of these problems can be used in a real life situation.

Grading Criteria	Maximum Points
Used CrypTool according to instructions	40
Understands meaning and implications of CrypTool results (Analysis section of report)	25
Understands benefits and risks of CrypTool (Reflection section of report)	10
Problem 10.1 - Shows detailed work with explanation as applicable with correct answer	10
Problem 10.3 - Shows detailed work with explanation as applicable with correct answer	10
Paragraph on Relevancy - Good example and explanation of application to a real-life situation for both Problems.	5
Total	100