| Parameter | Type | Description | Example |
|---|---|---|---|
| object | The data structure of the user-defined encryption configuration. | ||
| cmk_key_id | string | The ID of the customer master key (CMK) if you use the bring-your-own-key (BYOK) key. | f5136b95-2420-ab31-xxxxxxxxx |
| arn | string | The Alibaba Cloud Resource Name (ARN) of the Resource Access Management (RAM) role. | acs:ram::13234:role/logsource |
| region_id | string | The ID of the region where the CMK resides. | cn-hangzhou |