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

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.


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

Computer Science & Information Technology

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