MN502 Laboratory 5 Advanced Cryptography Assessment Answer

MN502 Network Security

Laboratory 5: Advanced Cryptography

Description of the laboratory exercise:

In this laboratory, student will observe and analyse different topics on advanced cryptography. Student will examine and analyse the security of webserver and local server, and also understand and analyse digital certificates on the computer.

Task 1: SSL Server and Client Tests

After completing all the steps in the manual for exercise one answer the following questions:

1. Compare the security features of website that received good rating (A and above) and not good rating (below A). Analyse the information and explain why some of the websites did not receive good rating.
2. Explain what you learnt about digital certificate from this exercise.

Task 2: Viewing Digital Certificate Revocation Lists (CRL) and Untrusted Certificates

After completing all the steps in the manual for exercise two, answer the following questions:

1. After doing the step 4, what is your understanding of Trusted Root Certification Authorities ?
2. After doing step 9 on Certificate Revocation List, why do you think this certificate has been revoked? 
3. Read the information about the Certificates for Untrusted Certificates (click the fields for more detail if necessary). Why do you think this certificate is no longer trusted?