Enabling Custom Identity Broker Access with an Agency

Prerequisites

• Your enterprise has an enterprise management system.
• You have registered an account (for example, DomainA) in Huawei Cloud as an enterprise administrator and has created a user group (for example, GroupC) and assigned it the Agent Operator role. (For details, see Creating a User Group and Assigning Permissions.)

Procedure

1. Use the DomainA account to create an IAM user (for example, UserB) and add the user to GroupC by following the instructions in Adding Users to a User Group.
   

   Ensure that the IAM user can programmatically access Huawei Cloud services. For details about how to change the access type, see Viewing or Modifying IAM User Information.

2. Configure the access key (recommended) or username and password of UserB in the configuration file of your enterprise IdP so that the user can obtain a token for calling APIs. For account security, encrypt the password and access keys before you store them.
3. In the navigation pane of the IAM console, choose Agencies. Then, click Create Agency in the upper right corner.
4. Set agency parameters.

   For example, set the agency name to testagency, agency type to Account, and delegated account to DomainA. Set the validity period and click Next.

   Figure 1 Creating an agency
   

5. Set the authorization scope, and select the permissions you want to grant to the agency.
6. In the enterprise IdP, create a user group named testagency (same as the name of the agency created in 4), add enterprise users to the group, and grant the users permissions to log in to Huawei Cloud through a custom identity broker. For details, see the documentation of the enterprise IdP.
7. After an enterprise user logs in to the enterprise management system, the user can access the custom identity broker of the enterprise IdP by selecting an agency from the agency list. The user can obtain the agency from the security administrator or root user. For details, see the documentation of the enterprise management system.
   

   The agencies of the identity broker must exist in Huawei Cloud and have the same names as some user groups created in the enterprise IdP.

8. The custom identity broker uses the token of userB to call the API POST /v3.0/OS-CREDENTIAL/securitytokens used to obtain a temporary security token. For details, see Obtaining a Temporary Access Key and Security Token Through an Agency.
   

   When obtaining a security token with an agency, set the session_user.name parameter in the request body.

9. The custom identity broker uses the temporary access key, security token, and global domain name of IAM (iam.myhuaweicloud.com) to call the API POST /v3.0/OS-AUTH/securitytoken/logintokens for obtaining a login token. The value of X-Subject-LoginToken in the response header is a login token. For details, see Obtaining a Login Token.
   

   • To obtain a login token by calling the API POST /v3.0/OS-AUTH/securitytoken/logintokens, use the global domain name (iam.myhuaweicloud.com) of IAM.
   • A login token is issued to a user to log in through a custom identity broker and contains identity and session information about the user. A login token is valid for 10 minutes by default. Login tokens are required for authentication when users log in to a service console using the FederationProxyUrl.
   • You can set the validity period of a login token by calling the API POST /v3.0/OS-AUTH/securitytoken/logintokens. The validity period ranges from 10 minutes to 12 hours. If the value you have specified is greater than the remaining validity period of the temporary security token, the remaining validity period of the temporary security token is used.

10. The custom identity broker generates a FederationProxyUrl and returns it to the browser through Location. The FederationProxyUrl will be in the following format:

    https://auth.huaweicloud.com/authui/federation/login?idp_login_url={enterprise_system_loginURL}&service={console_service_region_url}&logintoken={logintoken}

    Example:

    https://auth.huaweicloud.com/authui/federation/login?idp_login_url=https%3A%2F%2Fexample.com&service=https%3a%2f%2fconsole.huaweicloud.com%2fapm%2f%3fregion%3dcn-north-4%23%2fapm%2fatps%2ftopology&logintoken=******

    Table 1 Parameter description

    Parameter	Description
    idp_login_url	Login URL of the enterprise management system.
    service	Access address of a Huawei Cloud service.
    logintoken	Login token of the custom identity broker.

    The preceding three parameters must be encoded using URLEncode to ensure that they can be identified by the browser.

    For details about how to create a FederationProxyUrl, view the example provided in Creating a FederationProxyUrl Using an Agency.

    

    The FederationProxyUrl contains the login token that has been obtained from IAM, and must be encoded using UrlEncode.

11. If the login token is authenticated successfully, federated users will be automatically redirected to the Huawei Cloud service address specified in the service parameter.

    If the login token fails to be authenticated, federated users will be redirected to the address specified in idp_login_url.