CompTIA CASP+ (CAS-004) — Question 71
An attack team performed a penetration test on a new smart card system. The team demonstrated that by subjecting the smart card to high temperatures, the secret key could be revealed.
Which of the following side-channel attacks did the team use?
Answer options
- A. Differential power analysis
- B. Differential fault analysis
- C. Differential temperature analysis
- D. Differential timing analysis
Correct answer: B
Explanation
The correct answer is B, Differential fault analysis, because it involves causing faults in the system to extract sensitive information, which is what was done by exposing the smart card to high temperatures. The other options do not pertain to the method of inducing faults through temperature variations, as they focus on different aspects of side-channel attacks.