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Question 19 - Professional Cloud Security Engineer discussion

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You need to follow Google-recommended practices to leverage envelope encryption and encrypt data at the application layer.

What should you do?

A.
Generate a data encryption key (DEK) locally to encrypt the data, and generate a new key encryption key (KEK) in Cloud KMS to encrypt the DEK. Store both the encrypted data and the encrypted DEK.
Answers
A.
Generate a data encryption key (DEK) locally to encrypt the data, and generate a new key encryption key (KEK) in Cloud KMS to encrypt the DEK. Store both the encrypted data and the encrypted DEK.
B.
Generate a data encryption key (DEK) locally to encrypt the data, and generate a new key encryption key (KEK) in Cloud KMS to encrypt the DEK. Store both the encrypted data and the KEK.
Answers
B.
Generate a data encryption key (DEK) locally to encrypt the data, and generate a new key encryption key (KEK) in Cloud KMS to encrypt the DEK. Store both the encrypted data and the KEK.
C.
Generate a new data encryption key (DEK) in Cloud KMS to encrypt the data, and generate a key encryption key (KEK) locally to encrypt the key. Store both the encrypted data and the encrypted DEK.
Answers
C.
Generate a new data encryption key (DEK) in Cloud KMS to encrypt the data, and generate a key encryption key (KEK) locally to encrypt the key. Store both the encrypted data and the encrypted DEK.
D.
Generate a new data encryption key (DEK) in Cloud KMS to encrypt the data, and generate a key encryption key (KEK) locally to encrypt the key. Store both the encrypted data and the KEK.
Answers
D.
Generate a new data encryption key (DEK) in Cloud KMS to encrypt the data, and generate a key encryption key (KEK) locally to encrypt the key. Store both the encrypted data and the KEK.
Suggested answer: A

Explanation:

Envelope Encryption: https://cloud.google.com/kms/docs/envelope-encryption

Here are best practices for managing DEKs:

-Generate DEKs locally.

-When stored, always ensure DEKs are encrypted at rest.

- For easy access, store the DEK near the data that it encrypts.

The DEK is encrypted (also known as wrapped) by a key encryption key (KEK). The process of encrypting a key with another key is known as envelope encryption.

Here are best practices for managing KEKs:

-Store KEKs centrally. (KMS )

-Set the granularity of the DEKs they encrypt based on their use case. For example, consider a workload that requires multiple DEKs to encrypt the workload's data chunks. You could use a single KEK to wrap all DEKs that are responsible for that workload's encryption.

-Rotate keys regularly, and also after a suspected incident.

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asked 18/09/2024
Syed Hasan Rizvi
29 questions
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