Patent · US Active

Method for storing a data file

US11595188B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Ghassan Karame · Heidelberg, DE
Claudio Soriente · Madrid, ES
Hubert Ritzdorf · Zürich, CH
Srdjan Capkun · Zürich, CH

Key dates

Filing date	Sep 14, 2020
Grant date	Feb 28, 2023
Priority date	—
Expiry date	Jun 5, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0631
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for storing a data file (DF) on a storage entity (SE) includes receiving, by a proxy (PE) and from a computing entity (CE), a plurality of hash values corresponding to a plurality of blocks of the DF. The PE may check whether the plurality of blocks of the DF are stored in the SE based on the plurality of hash values. Based on determining that at least a subset of the plurality of blocks of the DF are not being stored in the SE, the PE may compute a secret associated with an encryption key. The PE may transmit, to the CE, the secret. The PE may receive, from the CE, information including storage locations of the subset of the plurality of blocks within the SE and one or more hash values, of the plurality of hash values, associated with the subset of the plurality of blocks.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.