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. 05, 2017
Filed:
May. 15, 2013
Mitsubishi Electric Corporation, Tokyo, JP;
Katsuyuki Takashima, Tokyo, JP;
Yutaka Kawai, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
It is an object to provide predicate encryption that can conceal both attribute information being set in a ciphertext and predicate information being set in a decryption key even in a public key setting. An encryption devicegenerates a ciphertext ctin which attribute information x is set as a basis vector of a basis D. A conversion deviceconverts with conversion information W the basis D of the ciphertext ctgenerated by the encryption deviceto a basis B so as to generate a ciphertext CT. A decryption devicedecrypts the ciphertext CTgenerated by the conversion devicewith a token tkin which predicate information v is set as a coefficient of a basis vector of a basis B* corresponding to the basis B.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile