AWS Certified Security – Specialty (SCS-C02) — Question 180

A security engineer is implementing a solution to allow users to seamlessly encrypt Amazon S3 objects without having to touch the keys directly. The solution must be highly scalable without requiring continual management. Additionally, the organization must be able to immediately delete the encryption keys.

Which solution meets these requirements?

Answer options

• A. Use AWS KMS with AWS managed keys and the ScheduleKeyDeletion API with a PendingWindowInDays set to 0 to remove the keys if necessary.
• B. Use KMS with AWS imported key material and then use the DeleteImportedKeyMaterial API to remove the key material if necessary.
• C. Use AWS CloudHSM to store the keys and then use the CloudHSM API or the PKCS11 library to delete the keys if necessary.
• D. Use the Systems Manager Parameter Store to store the keys and then use the service API operations to delete the keys if necessary.

Correct answer: B

Explanation

Option B is correct because using KMS with AWS imported key material allows for the key material to be deleted using the DeleteImportedKeyMaterial API, fulfilling the requirement for immediate key deletion. Options A and C do not provide the same level of immediate deletion flexibility, and option D does not involve a dedicated key management service, making it less suitable for encryption key management in this context.