Patent attributes
The present disclosure relates to computer-implemented methods, software, and systems for generating access tokens at an authentication server based on authorization codes. A first authorization server from a set of authorization servers receives a request for authorization of a request to access a resource by a resource owner. The first authorization server validates the request for authorization of the request to generate an authorization code. In response to successful validation of the request for authorization to generate the authorizaction code, the first authorization server generates a single-use authorization code by signing the generated authorization code with a unique private key. A unique public key is maintained for verifying the signed authorization code. The single-use authorization code is generated in a self-contained format. The single-use authorization code is provided to the client application for generation of an access token by one of the authorization servers from the set of authorization servers.