METHOD AND SYSTEM FOR WEB-BASED CROSS-DOMAIN SINGLE-SIGN-ON AUTHENTICATION

摘要

A method, system, or computer program product is presented for cross-domain, single-sign-on, authentication functionality. The methodology uses an introductory authentication token to introduce an already authenticated user from one domain to a new domain. This token is passed from one domain to the other domain using HTTP-redirection. This token is protected by encryption with a cryptographic key shared only between the two domain in a secure manner such that an external user cannot generate a counterfeit introductory token. An introductory token is further protected by enabling it with a limited lifetime so that an unauthorized user would not be able to use or reuse the introductory token within the token s lifetime. After a user has been introduced to a new security domain, then all of the user's resource requests are authorized by the new domain.