Can you modify the encryption specified in §5.2.3.2 mixing in the plaintext so that instead of bi = md(kab|ci-1) we use bi = md(kab|pi-1)? how do you decrypt it? why wouldn't the modified scheme be as secure?

Write a program that reads a set of floating-point values. ask the user to enter the values, then print • the average of the values. • the smallest of the values. • the largest of the values. • the range, that is the difference between the smallest and largest. of course, you may only prompt for the values once.