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:
Nov. 27, 2018
Filed:
Dec. 11, 2013
Mitsubishi Electric Corporation, Tokyo, JP;
Takumi Mori, Tokyo, JP;
Sachihiro Ichikawa, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A data storage system () uses an encryption scheme in which an encrypted file can be decrypted using a decryption key when a decryption condition set in the encrypted file is satisfied by a user attribute set in the decryption key. The data storage system () stores encrypted files encrypted by the encryption scheme in a file storage apparatus (). When user attribute is specified from a user terminal (), the data storage system () extracts the encrypted file of which the decryption condition is satisfied by the specified user attribute from among the encrypted files stored in the file storage apparatus (), and displays the extracted encrypted files classified by decryption condition.