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Using KMS to Encrypt and Decrypt Data for Cloud Services/
Encrypting a DDS DB Instance
Encrypting a DDS DB Instance
Updated on 2022-09-15 GMT+08:00
Overview
After encryption is enabled, disk data will be encrypted and stored on the server when you create a DB instance or expand disk capacity. When you download encrypted objects, the encrypted data will be decrypted on the server and displayed in plaintext.
Restrictions
- The KMS Administrator right must be added in the region of RDS using IAM. For details about how to assign permissions to user groups, see "How Do I Manage User Groups and Grant Permissions to Them?" in Identity and Access Management User Guide.
- To use a user-defined key to encrypt objects to be uploaded, create a key using DEW. For details, see .
- Once the disk encryption function is enabled, you cannot disable it or change the key after a DB instance is created. The backup data stored in OBS will not be encrypted.
- After a Document Database Service (DDS) DB instance is created, do not disable or delete the key that is being used. Otherwise, DDS will be unavailable and data cannot be restored.
- If you scale up a DB instance with disks encrypted, the expanded storage space will be encrypted using the original encryption key.
Using KMS to Encrypt a DB Instance (on the Console)
When you purchase a DB instance in DDS, you can set Disk Encryption to Enable and use the key provided by KMS to encrypt the disk of the DB instance. For more information, see .
Figure 1 Encrypting data in DDS
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Using KMS to Encrypt a DB Instance (Through an API)
You can also call the required API of DDS to purchase encrypted DB instances. For details, see Document Database Service API Reference.
Parent topic: Using KMS to Encrypt and Decrypt Data for Cloud Services
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