Authentication

Token Authentication

A token is valid for 24 hours. When using a token for authentication, cache it to avoid frequent calling.

A token is used to acquire temporary permissions. During API authentication using a token, the token is added to the request header to get permissions for calling the API. You can obtain a token by calling the API used to obtain a user token.

A cloud service can be deployed as either a project-level service or global service.

• For a project-level service, you need to obtain a project-level token by setting auth.scope in the request body to project.
• For a global service, you need to obtain a global token by setting auth.scope in the request body to domain.

A project-level token is required for calling APIs of the VPN service. As such, set auth.scope in the request body to project when you call the API for obtaining a user token.

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{
    "auth": {
        "identity": {
            "methods": [
                "password"
            ],
            "password": {
                "user": {
                    "name": "username",
                    "password": "********",
                    "domain": {
                        "name": "domainname"
                    }
                }
            }
        },
        "scope": {
            "project": {
                "name": "xxxxxxxx"
            }
        }
    }
}

After obtaining a token, add the X-Auth-Token field specifying the token to the request header when calling other APIs. For example, when the token is ABCDEFJ...., add X-Auth-Token: ABCDEFJ.... to the request header as follows:

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POST https://iam.cn-north-1.myhuaweicloud.com/v3/auth/projects
Content-Type: application/json
X-Auth-Token: ABCDEFJ....

AK/SK Authentication

AK/SK authentication supports API requests with a body size not larger than 12 MB. For API requests with larger sizes, use token authentication.

In AK/SK-based authentication, AK/SK is used to sign requests, and the signature is then added to the request header for authentication.

• AK: access key, which is a unique identifier used together with an SK to sign requests cryptographically.
• SK: secret access key, which is used together with an AK to sign requests cryptographically. It identifies a request sender and prevents the requests from being modified.

In AK/SK authentication, you can use an AK/SK to sign requests based on the signature algorithm or using the signing SDK.

Different from the SDKs provided by services, the signing SDK is used only for signing.