Crucial Exams

GCP Professional Cloud Security Engineer Practice Question

Your security team must ensure that encryption keys used for a new Cloud Storage bucket remain exclusively in the company's on-premises HSM cluster. You have deployed the vendor's Cloud External Key Manager (EKM) connector and obtained the key's URI (ekm://…). However, when you try to create the first symmetric CryptoKeyVersion in Cloud KMS with protection level EXTERNAL and the external_key_uri field set to that URI, the request fails with the error message:

"PERMISSION_DENIED: external key URI is not allowed by any EkmConnection".

Which prerequisite action in Google Cloud did you most likely omit, causing this error?

  • Grant the Cloud KMS service account the CryptoKey Encrypter/Decrypter role on the on-premises HSM that holds the key.

  • Create an EkmConnection resource in the same Cloud KMS location that explicitly lists the external key's URI.

  • Enable Private Service Connect for the project and add the external key URI to a VPC Service Controls perimeter.

  • Import the external key material into Cloud KMS by creating an import job and using the key's wrapped representation.

GCP Professional Cloud Security Engineer
Ensuring data protection
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