Suppose that Alice and Bob need to communicate, and have decided to use asymmetric (public key) encryption.

a. Using only asymmetric encryption algorithms, describe a process that would allow Alice to send a message that can only be read by Bob. You should include any steps taken by Bob that allow him to read the message.

b. Using only asymmetric encryption algorithms, describe a process that would allow Alice to send a message and Bob could be confident that it was sent by Alice. You should include any steps taken by Bob to determine whether or not Alice actually sent the message.