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Which of the following statements are true?
1. Given a large modulus n, the exponential operation mod n is computationally difficult.
2. Given a large modulus n, the discrete logarithm problem is computationally difficult.
3. The discrete logarithm mod p always exists and is unique if p is a prime number.
4. Using the primitive roots of a prime modulus p yields the maximum p-1 possible outcome values for the
discrete logarithm, which is desired for cryptography.
A. 1 & 2
B. 1 & 3
C. 1 & 4
D. 2 & 3
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E. 2 & 4
FUO nish the exam
F. 3 & 4
