1.One of the most fundamental underpinnings in the field of cryptography is how to generate, exchange, or distribute the keys involved in the different cryptographic schemes and algorithms.

Discuss the different methods used to exchange and distribute the keys involved in the different cryprtographic schemes and algorithms.

2.The third tenet of cryptography is authentication; that is, assuring the two parties who are engaged in a secure communication that they are indeed communicating with whom they think they are communicating. There are several methods that can achieve this goal.

Discuss the similarities and differences between different MAC functions.