CSPRNG has one input, a 128 bit seed. It produces 128 bit pseudo random numbers everytime it is run. a) Construct a 128 bit encryption function that breaks the input into 128 bit chunks and encrypts them. Show a block diagram and short explanation. b) Construct a 128 bit hash function from the random number generator. It takes data and breaks it into 128 bit chunks and finally generates a 128 bit hash. Show block diagram and explain.