International Business Machines Corporation

Moses Samson Charikar

Andrew Stephen Tomkins

Shanmugasundaram Ravikumar

Sridhar Rajagopalan

Ran Canetti

Amit Sahai

An anonymous credential system which requires a user who is asserting a credential to have knowledge of the master key of the user who was originally granted that credential. In order for a user to transfer the ability to assert any one of their credentials to another user, they must also transfer their master key to that same user. The master key, however, provides such unlimited rights to its holder that a user is strongly motivated not to share their master key with anyone else. In this manner, anonymous credentials become non-transferrable because a user cannot transfer a credential without transferring their entire electronic identity.

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Stanford, CA, United States of America

Moses Samson Charikar