Method and system for authenticating service providers to communicate with a primary service provider

A system comprising:

• an electronic identity provider reading service comprising a first electronic circuit;
• an electronic external service provider comprising a second electronic circuit receiving a request to access content from a user device through a network and communicating the request to access content to the identity provider reading service, said request to access content comprising cookie data that comprises identity provider data, said external service provider requesting cookie data corresponding to an identity provider token corresponding to the identity provider data from the identity provider reading service based on the request to access;
• said identity provider reading service communicating the identity provider token to the external service provider through the network;
• an identity provider comprising a third electronic circuit in communication with the external service provider through a network;
• said external service provider generating and communicating an authentication request and cookie data to the identity provider having the identity provider token and a service provider identifier;
• said identity provider communicating an assertion signal to the external service provider when the cookie data is resolved at the identity provider with the authentication request;
• and
• said external service provider granting access to content to the user device in response to the assertion signal.