Configuring the Start Time and End Time of Access to Objects in a Bucket

Procedure

1. In the bucket list, click the bucket to be operated. The Overview page of the bucket is displayed.
2. In the navigation pane on the left, click Permissions to go to the permission management page.
3. Choose Bucket Policies > Custom Bucket Policies.
4. Click Create Bucket Policy. The Create Bucket Policy dialog box is displayed.
5. Configure the parameters according to the following table:

   Table 1 Parameters for authorizing the permission to access a specified bucket

   Parameter	Value
   Policy Mode	Customized
   Effect	Allow
   Principal	Include Select Other account, and enter an asterisk (*) as the account ID, indicating all anonymous users.
   Resources	Include Set the resource name to *, indicating all resources in the bucket. NOTE: In this example, the policy configures permissions only for resources in the bucket. If you need to configure permissions for the entire bucket (for example, the permission to list objects in the bucket), you need to create another custom bucket policy for the entire bucket.
   Actions	Include Select * as the action name, which indicates all action permissions. NOTE: Selecting all action permissions may cause resources to be deleted. To avoid this risk, you are advised to set the action name to Get*, indicating all read permissions.
   Conditions	Condition Operator: DateGreaterThan Key: CurrentTime Value: 2019-03-26T12:00:00Z (UTC format)
   Conditions	Condition Operator: DateLessThan Key: CurrentTime Value: 2019-03-26T15:00:00Z (UTC format)

   

   The preceding two conditions must be configured in the same bucket policy.

6. Click OK.

Verification

During the specified time period, any user can access the specified resources in the bucket. Outside the specified time period, only the bucket owner can access the bucket.