PLS NO PLAGIARISM AND LET YOUR ANSWER BE SHORT AND SIMPLE

6. A nonce is in most cases a pseudorandom number.

(a) Explain why this means that we cannot guarantee that a particular nonce has not been used before.

(b) What should we do if we require a guarantee that each nonce is used at most once?

(c) The terms nonce and salt are used in different areas of cryptography (and not always consistently). Conduct some research on the use of these terms and suggest, in general, what the difference is between them.