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Data room terms / Document protection

Customer-managed keys (CMK)

The short version

An option in which the client, not the provider, controls the encryption keys for its data, often through its own cloud key service. Sometimes called bring your own key.

How it plays out on a deal

With customer-managed keys, the client can cut off the provider's ability to decrypt its data by revoking the key. Banks, defense suppliers and some life sciences companies ask for it to meet internal policies on third-party access.

It adds operational weight. If the client loses or revokes the key by mistake, the room becomes unreadable. It is usually limited to enterprise tiers and quoted separately, so it is worth confirming early whether a requirement truly exists before paying for it.

What to check in a review or demo

  1. 1Whether the option exists and on which plans.
  2. 2Which key services are supported and who handles rotation.
  3. 3What happens to the room and its archive if the key is revoked.

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Where this comes up on Data Room Review