Computer Science, Cryptography.
Alice and Bob’s numbers, she can easily reverse-engineer them. In the first case, if Eve knows that aδ is (2³) = 8, to calculate a, she would simply work out 3 = log2 8. In the second example, if Eve knows that aδ is 7^a mod 11 = 2, she would need to run through powers of P mod 11 until she arrives