Consider the following secure channel used by Alice and Bob to communicate.
a. If the message number is a 128 bits long. How many messages could be uniquely numbered?
b.Choose an authentication function for the secure channel, the security factor required is 256 bits.
C. Choose an encryption function, the security factor required is 256 bits.
d. How many keys are needed/ stablish for Authentication and Encryption when considering the secure channel?
