Ethical Hacking Quiz

Which of the following can be used as countermeasures to prevent hardware-based attacks?

• Encrypt data stored in register and buses.

• Add dummy circuit to generate random noise.

• Provide authentication using PUF.

• Use secure cryptographic algorithm

Which of the following statement(s) is/are false for side channel attacks?

• They exploit some weakness in the algorithm.

• They exploit some weakness in the implementation of the algorithm.

• They require physical access to the device.

• They only require the set of inputs/outputs to the algorithm.

Which of the following is/are typically exploited in side-channel attacks?

• Electromagnetic emissions.

• Timing analysis of an operation.

• Space complexity of an algorithm.

• Power consumed during computation.

• All of these.

For modular exponentiation computation of x^13, how many squaring and multiplication operations would be required?

• 3 and 2.

• 3 and 3.

• 3 and 4.

• 4 and 2.

What does power analysis do?

• It measures variation in power consumption during a computation.

• It attacks the power supply and feeds new power supply to the circuit.

• It relies on the use of a hardware Trojan in the circuit.

• All of these.

Which of the following statements describes the unclonable property of PUF?

• Given a PUF, it is hard to construct a procedure PUF’, where PUF ≠ PUF’, and PUF’(x) = PUF(x) for all x.

• Given only y and corresponding PUF instance, it is hard to find x such that PUF(x) = y.

• Given PUF and x, it should be easy to evaluate y = PUF(x).

• None of these.

Which of the following is/are applications of PUF?

• Identification.

• Key generation.

• Side channel analysis.

• Power analysis.

• None of these.

Consider the following statements: (i) Hardware Trojans are small modifications in the circuit. (ii) Hardware Trojans can be used for defensive purpose.

• Only (i) is true.

• Only (ii) is true.

• Both (i) and (ii) are true.

• Both (i) and (ii) are false.

In which of the following lifecycle stage(s) of an IC, insertion of the Hardware Trojan is not possible?

• Specification.

• Deployment.

• Fabrication.

• None of these.

Which of the following statement(s) is/are true about Hardware Trojan?

• It cannot replicate itself.

• It is difficult to detect.

• It does nothing harmful to the user’s computer system.

• None of these.