关于阿里云oss临时授权sts的疑惑

Question

按照sdk我已经生成了临时凭证

stdClass Object
(
    [RequestId] => 值
    [AssumedRoleUser] => stdClass Object
        (
            [AssumedRoleId] => 值
            [Arn] => 值
        )

    [Credentials] => stdClass Object
        (
            [AccessKeySecret] => 值
            [AccessKeyId] => 值
            [Expiration] => 2018-10-01T07:44:30Z
            [SecurityToken] => 值
        )

)

现在就拿生成的AccessKeyId和AccessKeySecret去上传吗？

返回的其他的信息有什么用呢？