Microsoft Technology Licensing, LLC

David J Nicholson

Ariel Nicolas Gordon

Chun-Hung Lin

Kavitha Radhakrishnan

David Lewis Fisher

Michael D Ritche

Christopher B Dove

The authentication of identities within a realm in which some identities are authenticated using direct authentication, and some identities are authenticated using federated authentication. Requests for service from valid identities in the realm that are to be authenticated by direct authentication are responded to with a direct authentication interface. Requests for service from valid identities in the realm that are to be authenticated by federated authentication are responded to with a federated authentication interface. Requests for service from invalid identities are responded to pseudo-randomly with either the direct authentication interface or the federated authentication interface.

Home realm discovery in mixed-mode federated realms

Embodiments are directed to establishing the integrity of a portion of data on at least one level of a plurality of network stack levels and automatically continuing an established federation relationship between at least two federation computer systems. In an embodiment, a first federation computer system receives a digital signature corresponding to a computer system signed by a digital signature which includes the computer system's identity and other federation relationship information configured to establish a trusted federation relationship between a first federation computer system and a second federation computer system. The first federation computer system attempts to validate the received digital signature at a first level of a network stack and determines that the validation at the first network stack layer was unsuccessful. The first federation computer system then validates the received digital signature at a second, different level of the network stack.

Automatic configuration and continuation of federation relationships

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Seattle, WA, United States of America

David J Nicholson