Patent · US Active

Method for storing a data file

US10819506B2 · kind B2 · utility

0Cited by

4References

15Claims

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	Oct 7, 2015
Grant date	Oct 27, 2020
Priority date	—
Expiry date	Jun 2, 2036

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 a computing entity, ‘CE’, chunking the DF into a number of blocks using a one-way-function and a chunking key. The CE may compute a hash value for each of the blocks. One or more proxies, ‘PE’, may check whether the blocks are already stored, resulting in a first number of already stored blocks and a second number of blocks not being stored. The CE may encrypt the blocks not being stored using an encryption key, transmit the encrypted blocks to the SE for storing, and inform the PE about the hash value of each of the transmitted blocks and corresponding storage location information of the transmitted blocks.

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