1 What are two different uses of public-key cryptography related to key distribution? 2 List four general categories of schemes for the distribution of public keys. 3 What are the essential...

1
What are two different uses of public-key cryptography related to key distribution?

2
List four general categories of schemes for the distribution of public keys.

3
What are the essential ingredients of a public-key directory?

4
What is a public-key certificate?

5
What are the requirements for the use of a public-key certificate scheme?