Authentication

AK/SK Authentication

• AK/SK authentication supports API requests with a body not larger than 12 MB. For API requests with a larger body, token authentication is recommended.

• The AK/SK can be either a permanent access key or a temporary access key. If it is a temporary access key, the X-Security-Token field must be added to the request. The value is the security_token of the temporary access key.

In AK/SK authentication, AK/SK is used to sign requests and the signature is then added to the requests 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 request 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. For details about how to sign requests and use the signing SDK, see AK/SK Signing and Authentication Guide.

The signing SDK is only used for signing requests and is different from the SDKs provided by services.

Token Authentication

• A token is valid for 24 hours. When using a token for authentication, cache it to avoid frequent calling.
• To avoid token expiration during an API call, ensure that the time taken to complete a call is shorter than the time left before a token expires.

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 Obtaining User Token API. Global Accelerator is a global service. When you call the API, set auth.scope in the request body to domain.

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

After a token is obtained, the X-Auth-Token header field must be added to requests to specify the token when calling other APIs. For example, if the token is ABCDEFJ...., X-Auth-Token: ABCDEFJ.... can be added to a request as follows:

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POST https://iam.myhuaweicloud.eu/v3/auth/projects
Content-Type: application/json
X-Auth-Token: ABCDEFJ....