11 Feb a. Identify the digital signat
a. Identify the digital signature schemes and MAC schemes that are supported by CrypTool. For each scheme, determine the key sizes supported by CrypTool and which key sizes are recommended by NIST.
b. Encrypt text using two digital signature schemes, measure the execution time for key generation (if applicable), signature generation, and signature verification. Measurements should be performed multiple times and then the analysis should use the average time for comparisons. In order to obtain measurable results, you will likely need to use long messages (i.e. 5 MB or larger). A sample document is available under Doc Sharing if student is unable to find a suitable document to use.
c. Record results and draw conclusions. Identify the encryption algorithm used. Discuss the results of the measurements and any variations or trends observed when comparing the results from the group members. Report the results and the analysis. Be sure to include details on the measured results and details on each member’s computer (e.g., processor type, speed, cache size, RAM size, OS, etc.).
Part 1.2
a. Using CrypTool, generate a MD5 hash for a small plaintext document.
b. Record the hash result (Cut and paste).
c. Change one character in the plaintext and regenerate a hash on the changed text.
d. Record the hash (Cut and paste into your report).
e. Do you think you could find a hash collision? (That is, can you find two different texts that produce the same hash? Experiment a few times and draw a conclusion about whether this can be done easily.)
Part 1.3
a. Generate a large prime (at least 20 digits long) and a short prime (less than 10 digits in length) (HINT Individual Procedures \ RSA Cryptosystem \ Generate prime numbers).
b. Determine which factorization algorithms are implemented within CrypTool (Individual Procedures -> RSA Demonstration -> Factorization of a Number).
c. Identify the characteristic features of these algorithms by reading the “Factorization algorithms” help within the tutorials section of CrypTool’s built in help.
d. Try to factor the primes using some of these methods.
e. Report your results, identifying the methods you used. Be sure to include how long the factorization took (or how long it was estimated to take if it did not complete in a reasonable time).
f. Now, just enter numeric values to be factored (again one long number and one short one).
g. What are the results? Were factors found? Are you good at guessing prime numbers?
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteEdu. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
Do you need help with this question?
Get assignment help from WriteEdu.com Paper Writing Website and forget about your problems.
WriteEdu provides custom & cheap essay writing 100% original, plagiarism free essays, assignments & dissertations.
With an exceptional team of professional academic experts in a wide range of subjects, we can guarantee you an unrivaled quality of custom-written papers.
Chat with us today! We are always waiting to answer all your questions.