The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2007
Filed:
May. 15, 2000
Ran Canetti, New York, NY (US);
Moses Samson Charikar, Stanford, CA (US);
Sridhar Rajagopalan, San Jose, CA (US);
Shanmugasundaram Ravikumar, San Jose, CA (US);
Amit Sahai, Thousand Oaks, CA (US);
Andrew S. Tomkins, San Jose, CA (US);
Ran Canetti, New York, NY (US);
Moses Samson Charikar, Stanford, CA (US);
Sridhar Rajagopalan, San Jose, CA (US);
Shanmugasundaram Ravikumar, San Jose, CA (US);
Amit Sahai, Thousand Oaks, CA (US);
Andrew S. Tomkins, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
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.