Answer the following statements true (T) or false (F)

Question

1. A trap-door one-way function is easy to calculate in one direction and infeasible to calculate in the other direction unless certain additional information is known.
2. A public-key encryption scheme is not vulnerable to a brute-force attack.
3. Before the application of the public-key cryptosystem each participant must generate a pair of keys.
4. The defense against the brute-force approach for RSA is to use a large key space.
5. Timing attacks are ciphertext attacks that are only applicable to RSA.

Answer 1

1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE