6.11

6.11. A function (6,1)n(0,1)n is chosen uniformly at random. What is the probability that the function is invertible? 6.12. Let F be a secure PRP with blocklength Wen = 128. Then for each k. the function F(k,) is a permatation on (0,1)12t, Suppose I choose a permutation on (0,1)th uniformly at random. What is the probability that the permutation I chnse aerpes with a nermutation