Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

While validating the CSPRNG that seeds session-establishment keys in a new mobile payment application, you must produce solid evidence that the generator meets accepted entropy requirements. According to current NIST guidance, which test activity provides the most reliable proof of adequate entropy?

  • Collect 100 MB of output and run the NIST SP 800-22 statistical test suite looking for failed randomness tests.

  • Perform an entropy-source assessment and health-testing regimen in accordance with NIST SP 800-90B/800-90C, including review of seeding and reseeding logic.

  • Conduct mutation-based fuzzing of the CSPRNG API to detect crashes or hangs during number generation.

  • Benchmark the average CPU cycles required per random byte and compare the result to performance baselines.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Testing
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