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:
Aug. 14, 2018
Filed:
Dec. 31, 2014
Shenzhen University, Shenzhen, Guangdong, CN;
Shenzhen University, Shenzhen, CN;
Abstract
A method for access control of shared data includes a data access requester transmitting a request for accessing a shared data to a data storage dealer, obtaining a cipher text of the shared data, a cipher text of an encryption key, an access strategy, and a cipher text attribute component from the data storage dealer, and transmitting a request for obtaining the user attribute component of the data access requester respectively to the attribute authorizers. The attribute authorizers generate the user attribute components of the data access requester respectively and transmit the user attribute components of the data access requester to the data access requester. The data access requester restores the encryption key, and decrypts the cipher text of the shared data according to the encryption key for obtaining the shared data requested to be accessed.