Question 3 a) Discuss the basic components of Cryptography CR (8) b) Describe the sequence of steps the sender of a message takes when sending a message with a digital signature, what steps does the...

Question 3
a) Discuss the basic components of Cryptography CR (8)
b) Describe the sequence of steps the sender of a message takes when sending a message with a digital signature, what steps does the receiver of such a message take to recover the message. EV (7)
c) Explain why PKI is so important in modern communications