Crucial Exams

ISC2 Certified Cloud Security Professional (CCSP) Practice Question

A cloud security architect must ensure that each tenant's data stored in a multi-tenant SaaS platform can be checked for unauthorized modification at any time without requiring the platform operator to decrypt the data. Which of the following approaches best satisfies this requirement while minimizing computational overhead?

  • Append an MD5 checksum with a static salt to every file and periodically recalculate the value for comparison.

  • Calculate a SHA-256 digest of each object at upload and store the hash in a separate, tamper-evident metadata repository for later comparison.

  • Encrypt the files with AES-256 in Galois/Counter Mode so the authentication tag can be used to confirm integrity when needed.

  • Apply reversible Base64 encoding to each file and verify integrity by decoding and comparing sizes.

ISC2 Certified Cloud Security Professional (CCSP)
Cloud Data Security
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