1. Brief the origin of PGP.
2. What is meant by ‘signing’ a document?
3. Explain the importance of random numbers in PGP message generation.
1. List out the components contained in the outcome of PGP encryption.
2. What are the shortcomings of S/MIME, and how can it be rectified?
3. Mention any features to add with S/MIME or enhance any feature of S/MIME and How?