Exercise 2: Prove formally that the definition of indistinguishable encryptions in the pre of an eavesdropping adversary) cannot be satisfied if II can encrypt arbitrary-length messag the adversary is not restricted to output equal-length messages in experiment Privk Exercise 2: Prove formally that the definition of indistinguishable encryptions in the pre of an eavesdropping adversary) cannot be satisfied if II can encrypt arbitrary-length messag the adversary is not restricted to output equal-length messages in experiment Privk