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:
Sep. 01, 2026
Filed:
May. 01, 2023
Ntt Research, Inc., Sunnyvale, CA (US);
Hoeteck Wee, Sunnyvale, CA (US);
NTT Research, Inc., Sunnyvale, CA (US);
Abstract
A candidate broadcast encryption scheme for N users with parameter size poly(log N) is disclosed. Security of the scheme can be proved under a non-standard variant of the learning with errors (LWE) assumption, yielding a broadcast encryption scheme that is post-quantum secure with a security reduction to a simple assumption. Also disclosed is a ciphertext policy attribute-based encryption (CP-ABE) scheme for circuits of a-priori bounded polynomial depth where the parameter size is independent of the circuit size, where security can be proved under an additional non-standard assumption.
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