Review Questions

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

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

3. What are the essential ingredientes 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?

6. Briefly explain Diffie-Hellman key exchange.

7. What is an elliptic curve?

8. What is the zero point of an elliptic curve?

9. What is the sum of three points on an elliptic curve that lie on a straight line?