1.In class we have learned about how to perform challenge-response authentication using public key digital signature. As mentioned, there is a similar scheme that uses public key encryption. could you help me design that scheme? in the scheme the responder still has to perform an operation only he/she can do.
2.Advances in technology allow both people who design algorithm and hackers to have computers that work faster than the old ones. Does this increase in computer speeds works to the advantage of algorithm developers , hackers or it makes no difference at all.