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Abstract

Bifurcated authentication token techniques are described in which sign-on credentials are separated from corresponding privilege data for resources. During client authentication, a determination is made regarding whether a service provider is configured to support bifurcated authentication token techniques. If the techniques are supported, a lightweight token is issued to the client and corresponding privilege data is stored separately from the token in a centralized authentication database. If a service provider does not support bifurcated authentication token techniques, a traditional, combined authentication token that includes privilege data is issued to the client. The lightweight token contains identity information and a reference to the privilege data, but does not contain the actual privilege data. Therefore, the lightweight cookie token alone is not sufficient to gain access to corresponding resources. Moreover, privileges associated with a lightweight token may be revoked or altered without having to change or invalidate the lightweight token itself.

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First Claim