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:
Dec. 26, 2023
Filed:
May. 20, 2021
Nec Corporation, Tokyo, JP;
Jens-Matthias Bohli, Heidelberg, DE;
Ghassan Karame, Heidelberg, DE;
Frederik Armknecht, Heidelberg, DE;
NEC CORPORATION, Tokyo, JP;
Abstract
A method for storing data on a storage entity (SE) includes: computing a file identifier for a file to be stored on the SE; checking if the file has already been stored using the file identifier; generating a user-specific private and public identifier, wherein generating the user-specific private identifier is based on using an oblivious key generation protocol between the client and a trusted entity, and wherein the user-specific private identifier is a deterministic private identifier; updating or computing tags of the file by the client such that the updating or computing is homomorphic in the user-specific private identifier and in parts of the file; and providing the user-specific public identifier, the updated tags and a proof of possession of the secret identifier to the SE to enable the SE to store information associated with the file.