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. 13, 2025
Filed:
Jun. 23, 2021
Sony Group Corporation, Tokyo, JP;
SONY GROUP CORPORATION, Tokyo, JP;
Abstract
A method for sharing encrypted data including encrypting first data with at least one first attribute. The first attribute satisfies a first access policy of a first cryptographic key to enable one or more first users holding the first cryptographic key to decrypt the encrypted first data using the first cryptographic key. The method includes encrypting second data with at least one second attribute of the second data. The method includes generating a second cryptographic key based on a second access policy including at least one logical connective of the first attribute and the second attribute for decrypting the encrypted first data and the encrypted second data using the second cryptographic key and providing the second cryptographic key to one or more second users to enable the second users to decrypt the encrypted first data and the encrypted second data.