Updated on 2023-01-31 GMT+08:00

Creating a Grant

You can create grants for other IAM users or accounts to use the CMK. You can create a maximum of 100 grants on a CMK.

Prerequisites

  • You have obtained the ID of the grantee (user to whom permissions are to be authorized).
  • The desired CMK is in Enabled status.

Constraints

The owner of a CMK can create a grant for the CMK on the KMS console or by calling APIs. The IAM users or accounts who have the grant creation permission assigned by the owner of the CMK can create grants for the CMK only by calling APIs.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner of the management console and select a region or project.
  3. Click . Choose Security & Compliance > Data Encryption Workshop.
  4. Click the alias of the desired CMK to go to the page displaying its details to create a grant on it.
  5. Click the Grants tab.

    Figure 1 Grant tab page

  6. Click Create Grant. The Create Grant dialog box is displayed.

    Figure 2 Creating a grant (for a user)
    Figure 3 Creating a grant (for an account)

  7. In the dialog box that is displayed, enter the ID of the user to be authorized and select permissions to be granted. For more information, see Table 1.

    A grantee can perform the authorized operations only by calling the necessary APIs. For details, see the .

    Table 1 Parameter description

    Parameter

    Description

    Example Value

    Key ID

    ID of a CMK (automatically read by the system)

    -

    User or Tenant

    Whether a user or an account is authorized.

    • User

      User ID: Enter the IAM user ID. To obtain the ID, click the username in the upper right corner of the page, choose My Credentials. Choose API Credentials from the navigation pane, and copy the value of IAM User ID.

      After the authorization is complete, the IAM user can use the specified keys.

    • Account

      Account ID: Enter the IAM user ID. To obtain the ID, click the username in the upper right corner of the page, choose My Credentials. Choose API Credentials from the navigation pane, and copy the value of Account ID.

      After the authorization is complete, all IAM users under the account can use specified keys.

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    Operations

    The following permissions can be authorized:

    NOTE:
    • You can create multiple grants on a CMK to provide different permissions to the same user. The user's permissions on the CMK are the combination of all the grants.
    • This parameter cannot be left blank.
    • Selecting only Create Grant is not allowed.
    • Create Data Key Without Plaintext
    • Create Data Key
    • Encrypt Data Key
    • Decrypt Data Key
    • Query Key Information
    • Create Grant
    • Retire Grant
      • A grantee can retire a grant if the grantee does not need that permission.
      • If, before retiring a grant, the grantee has granted the permission to another user, that user's permission will not be affected by the grant retirement.
    • Encrypt Data
    • Decrypt Data

    -

  8. Click OK. When message Grant created successfully is displayed in the upper right corner, the grant has been created.

    In the list of grants, you can view the grant ID, grant type, grantee ID, granted operation, and creation time of the grant.