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:
Oct. 12, 2010
Filed:
Aug. 31, 2005
Craig B. Gentry, Mountain View, CA (US);
Zulfikar Amin Ramzan, San Mateo, CA (US);
Bernhard Bruhn, Stuttgart, DE;
Craig B. Gentry, Mountain View, CA (US);
Zulfikar Amin Ramzan, San Mateo, CA (US);
Bernhard Bruhn, Stuttgart, DE;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
Different targets (c, N) of a digital certificate are mapped into a 'super-target' using methods allowing a certificate validity verifier () to compute the super-target. The certificate includes the super-target instead of the targets. Also, a certificate with multiple targets can be signed with a redactable signature by the certification authority (CA). When the certificate's owner provides the certificate to a verifier together with a validity proof, the owner redacts the certificate to delete unnecessary targets. A single validity proof (c(F)) may be provided to certificate owners for a set (F) of the certificates via a multicast transmission if a multicasting group () is formed to correspond to the set.