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Authorization Cases
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Last updated: 2024-03-25 15:11:17
Authorization Cases
Last updated: 2024-03-25 15:11:17
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Granting Permission via Bucket Policy

Preparations

1. Create a bucket. Granting permissions through a bucket policy involves specific buckets, so you need to create a bucket first. For authorization at the account level, see Granting Permission via CAM in this document.
2. Prepare the UIN of the account to be authorized. This document assumes that the root account that owns the target bucket has a UIN of 100000000001 and its sub-account has a UIN of 100000000011. The sub-account needs to be authorized to access the destination bucket.
Note:
To query sub-accounts created under the root account, log in to the CAM console and view them in the User List.
To create a sub-account, see Creating Sub-user.
3. Open the Add Policy dialog. Click the destination bucket and select Permission Management > Permission Policy Settings > Visual Editor > Add Policy. Then, you can configure a policy as instructed in the authorization cases below. For detailed directions, see Adding a Bucket Policy.
The following lists several authorization cases, which you can configure as needed.

Authorization cases

Case 1: Granting a sub-account full permissions for a specified directory

The configuration information is as follows:
Configuration Item
Description
Effect
Select Allow.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Select a specific resource path, such as folder/sub-folder/*.
Actions
Select All Actions.

Case 2: Granting a sub-account read permission for all files in a specified directory

The configuration information is as follows:
Configuration Item
Description
Effect
Select Allow.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Select a specific resource path, such as folder/sub-folder/*.
Actions
Select Read Operation (listing objects is included).

Case 3: Granting a sub-account read/write permission for specified files

The configuration information is as follows:
Configuration Item
Description
Effect
Select Allow.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Select a specific object key, such as folder/sub-folder/example.jpg.
Actions
Select All Actions.

Case 4: Granting a sub-account read/write permission for all files in a specified directory while denying read/write permission for specified files in the directory

For this case, you need to add an allow policy and a deny policy.
1. First, add the allow policy. The configuration information is as follows:
Configuration Item
Description
Effect
Select Allow.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Specify a directory prefix, such as folder/sub-folder/*.
Actions
Select All Actions.
2. Then, add the deny policy. The configuration information is as follows:
Configuration Item
Description
Effect
Select Deny.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Specify the object key to be denied access, such as folder/sub-folder/privateobject.
Actions
Select All Actions.

Case 5: Granting a sub-account read/write permission for files with a specified prefix

The configuration information is as follows:
Configuration Item
Description
Effect
Select Allow.
User
Select Sub-account and enter a sub-account UIN, which must be a sub-account under the current root account, such as 100000000011.
Resource
Specify a prefix, such as folder/sub-folder/prefix.
Actions
Select All Actions.


Granting Permission via CAM

If you need to grant permissions at the account level, see the following documents:
Authorizing Sub-account Full Access to Specific Directory
Authorizing Sub-account Read-only Access to Files in Specific Directory
Authorizing Sub-account Read/Write Access to Specific File
Authorizing Sub-account Read-only Access to COS Resources
Authorizing a Sub-account Read/Write Access to All Files in Specified Directory Except Specified Files
Authorizing Sub-account Read/Write Access to Files with Specified Prefix
Authorizing Another Account Read/Write Access to Specific Files
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