Obtaining a Temporary Access Key and Security Token Through an Agency

Function

This API is used to obtain a temporary access key and security token by using an agency.

Temporary access keys and security tokens are issued by the system to IAM users, and can be valid for 15 minutes to 24 hours. The temporary access key and security token follow the principle of least privilege. A temporary access key must be used together with a security token, and the x-security-token field must be included in the request header. For details, see How Do I Use a Temporary AK/SK to Sign Requests?

The API can be called using both the global endpoint and region-specific endpoints. For IAM endpoints, see Regions and Endpoints.

Debugging

You can debug this API in API Explorer.

URI

POST /v3.0/OS-CREDENTIAL/securitytokens

Request Parameters

**Table 1** Parameters in the request header
Parameter	Mandatory	Type	Description
Content-Type	Yes	String	Fill application/json;charset=utf8 in this field.
X-Auth-Token	Yes	String	Token with Agent Operator permissions.

**Table 2** Parameters in the request body
Parameter	Mandatory	Type	Description
auth	Yes	Object	Authentication information.

**Table 3** auth
Parameter	Mandatory	Type	Description
identity	Yes	Object	Authentication parameters.

**Table 4** auth.identity
Parameter	Mandatory	Type	Description
methods	Yes	Array of strings	Authentication method. Set this parameter to ["assume_role"].
assume_role	Yes	Object	Details about the delegating account and agency.
policy	No	Object	Permissions to be assigned to the temporary access key and security token (currently the policy only applies to OBS). The final permissions of the temporary access key and security token are all the permissions assigned to the specified agency and defined in this parameter. For details about the format and syntax of IAM policies, see Policies.

**Table 5** auth.identity.assume_role
Parameter	Mandatory	Type	Description
agency_name	Yes	String	Agency name. For details about how to obtain the agency name, see Obtaining Account, IAM User, Group, Project, Region, and Agency Information.
domain_id	No	String	Account ID of the delegating party. Either domain_id or domain_name must be set. You are advised to specify domain_id.
domain_name	No	String	Account name of the delegating party. Either domain_id or domain_name must be set. You are advised to specify domain_id.
duration_seconds	No	Integer	Validity period (in seconds) of the AK/SK and security token. The value ranges from 15 minutes to 24 hours. The default value is 15 minutes.
session_user	No	Object	Enterprise user information of the delegating party.

**Table 6** auth.identity.assume_role.session_user
Parameter	Mandatory	Type	Description
name	No	String	Enterprise user name of the delegating party. The name must consist of 5 to 64 characters, containing only letters (case-sensitive), digits, spaces, hyphens (-), underscores (_), and periods (.) and must start with a letter.

**Table 7** auth.identity.policy
Parameter	Mandatory	Type	Description
Version	Yes	String	Policy version. When creating a custom policy, set this parameter to 1.1. NOTE: 1.1: Policy. A policy defines the permissions required to perform operations on a specific cloud resource under certain conditions.
Statement	Yes	Array of objects	Statement of the policy. A policy can contain a maximum of eight statements.

**Table 8** auth.identity.policy.Statement
Parameter	Mandatory	Type	Description
Action	Yes	Array of strings	Specific operation permissions on a resource. For details about supported actions, see "Permissions and Supported Actions" in the API Reference of cloud services. NOTE: The value format is Service name:Resource type:Operation, for example, vpc:ports:create. Service name: indicates the product name, such as ecs, evs, or vpc. Only lowercase letters are allowed. Resource types and operations are not case-sensitive. You can use an asterisk (*) to represent all operations.
Effect	Yes	String	Effect of the permission. The value can be Allow or Deny. If both Allow and Deny statements are found in a policy, the authentication starts from the Deny statements. Options: Allow Deny
Condition	No	Map<String,Map<String,Array<String>>>	Conditions for the permission to take effect. For details, see Creating a Custom Policy. NOTE: Take the condition in the sample request as an example, the values of the condition key (obs:prefix) and string (public) must be equal (StringEquals). "Condition": { "StringEquals": { "obs:prefix": [ "public" ] } }
Resource	No	Array of strings	Cloud resource. NOTE: Format: Service name:Region:Account ID:Resource type:Resource path. Wildcard characters () are supported. For example, obs:::bucket: indicates all OBS buckets. The region segment can be * or a region accessible to the user. The specified resource must belong to the corresponding service that actually exists.

Response Parameters

**Table 9** Parameters in the response body
Parameter	Type	Description
credential	Object	Authentication result.

**Table 10** credential
Parameter	Type	Description
expires_at	String	Expiration time of the access key and security token. The response is UTC time.
access	String	AK.
secret	String	SK.
securitytoken	String	Obtained access key in ciphertext.

Example Request

Request with session_user specified (containing the enterprise user name of the delegating party)

POST https://iam.myhuaweicloud.com/v3.0/OS-CREDENTIAL/securitytokens

{
    "auth": {
        "identity": {
            "methods": [
                "assume_role"
            ],
            "assume_role": {
                "domain_name": "IAMDomainA",
                "agency_name": "IAMAgency",
                "duration_seconds": 3600,
                "session_user": {
                    "name": "SessionUserName"
                }
            }
        }
    }
}

Request with policy set to control the permissions assigned to the obtained temporary access key and security token (currently the policy applies only to OBS). The final permissions of the temporary access key and security token are the intersection of permissions assigned to the specified agency and defined in policy.

POST https://iam.myhuaweicloud.com/v3.0/OS-CREDENTIAL/securitytokens

{
    "auth": {
        "identity": {
            "methods": [
                "assume_role"
            ],
            "policy": {
                      "Version": "1.1",
		       "Statement": [{
			 "Effect": "allow",
			 "Action": [
                         "obs:object:*"
                         ],
			 "Resource": ["obs:*:*:object:*"],
			 "Condition": {
			    "StringEquals": {
				"obs:prefix": ["public"]
				}
			}
		}]
             },
            "assume_role": {
                "domain_name": "IAMDomainA",
                "agency_name": "IAMAgency",
                "duration_seconds": 3600

            }
        }
    }
}

Request without session_user and policy specified

POST https://iam.myhuaweicloud.com/v3.0/OS-CREDENTIAL/securitytokens

{
    "auth": {
        "identity": {
            "methods": [
                "assume_role"
            ],
            "assume_role": {
                "domain_name": "IAMDomainA",
                "agency_name": "IAMAgency",
                "duration_seconds": 3600
            }
        }
    }
}

Example Response

Status code: 201

The request is successful.

The responses to all the preceding requests are the same regardless of whether session_user is specified or not. If session_user is specified, the security token contains the corresponding enterprise user information.

{
    "credential": {
        "access": "E6DX0TF2ZREQ4Z...",
        "expires_at": "2020-01-08T02:56:19.587000Z",
        "secret": "w9ePum0qdfac39ErLD0UdjofYkqort6Iw....",
        "securitytoken": "gQpjbi1ub3J0aC0..."
    }
}