Case Study
Digital Signatures and PKI
Examine Digital Certificates
In this assignment you will examine the digital certificates of a google web site, find the certification path, and answer the questions below.
• Open a Chrome browser and go to gmail.com.
• Note that the url starts with https. This means that this is a secure communication.
• Notice also the lock by the url. (Visit https://support.google.com/chrome/answer/95617?hl=en)
• Click on the lock and the details.
• View the certificate for the site and answer these questions:
• Who is the certificate authority on this certificate?
• Who is the certificate issued to?
• What is the associated public key?
• When does the certificate expire?
Find the Certification Path
• Look at the path of the certification. Click on the immediate parent of google.com, Google Internet Authority G2.
• View the certificate for Google Internet Authority G2 and answer these questions:
• Who is the certificate authority on this certificate?
• Who is the certificate issued to?
• What is the associated public key?
• When does the certificate expire?
• Proceed with this until you view the certificates of all intermediate authorities and the root authority.
• Try at least two other different website and follow the same steps mentioned above and answer the same questions again about each one of them!