Crucial Exams

ISC2 Certified Cloud Security Professional (CCSP) Practice Question

Your organization is building a customer analytics application on a public IaaS platform. Order records include payment card primary account numbers (PANs). Compliance requires that (a) no real PANs be stored in any cloud-hosted component, (b) authorized finance staff must be able to recover the original PANs from headquarters when needed, and (c) the cloud database must still support joining transaction records on a persistent surrogate value. Which data-protection design best fulfills these requirements?

  • Replace each PAN with a random, format-preserving surrogate generated by an on-premises tokenization vault that retains the mapping table, and store only the tokens in the cloud.

  • Encrypt each PAN in the application using format-preserving AES-FFX and store the ciphertext in the cloud; keep the master key in an on-premises HSM.

  • Apply deterministic client-side encryption to the PANs so identical values can still be joined in the cloud database.

  • Hash each PAN with SHA-256 and a secret salt before uploading the record, storing the salt securely on-premises.

ISC2 Certified Cloud Security Professional (CCSP)
Cloud Data Security
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