Crucial Exams

ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question

Your team receives a critical patch library as a compressed file from a third-party supplier. To satisfy internal policy requiring proof of both integrity and authenticity before integration, which action provides the strongest cryptographic assurance in a single step?

  • Download the file again over HTTPS and compare byte counts between copies.

  • Perform a vulnerability scan of the library with the latest CVE database.

  • Recompute the SHA-256 checksum and compare it with the value on the supplier's website.

  • Validate the file's detached digital signature using the supplier's published public key.

ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Supply Chain
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