OBS allows users to encrypt objects on the server side so that the objects can be securely stored in OBS.
In the region where the OBS is deployed, add the KMS Administrator permission to the user group. For details about how to add permissions, see the IAM User Guide.
After HTTPS and KMS encryption are enabled, objects uploaded to OBS are encrypted with keys provided by KMS. By default, the key obs/default is selected for encryption.
After objects are uploaded, click on the right of the object list. In the Properties dialog box that is displayed, you can view the object encryption status. Yes indicates that server-side encryption has been implemented for the object. No indicates that server-side encryption has not been implemented for the object. The object encryption status cannot be changed.
HTTPS must be enabled when you enable KMS encryption to upload objects. Therefore, if you deselect Enable HTTPS, Enable KMS encryption is deselected automatically.