Hello,
I understand that you would like to know if there is a way to authenticate to Google Cloud Storage without using tokens.
You mentioned you wish to use a User name and password but OAuth can use these. For example, the client may place these credentials to you and the code you implement may process
these.
Cloud Storage uses OAuth 2.0 for API authentication and authorization. Authentication is the process of determining the identity of a client.
There are other ways to authenticate to Google Cloud Storage. You may use cookies as described in this
document:
Authenticated browser downloads use cookie-based authentication. Cookie-based authentication asks users to sign in to their Google account to establish their identity. The specified Google account must have appropriate permission to download the object.
The answer to your question may be better explained by providing your use case.