US 11,240,243 B2 · Preventing statistical inference attacks on data that is shared among multiple stakeholders with disjoint access privileges

Abstract

According to one embodiment, a method, computer system, and computer program product for preventing statistical inference attacks is provided. The present invention may include splitting records into items, and classifying these items into shared items and private items; grouping the private items according to privacy and confidentiality requirements; restricting access of the private items to stakeholders based on the confidentiality requirements using cryptographic keys; generating and encrypting one or more placeholders for both existent and non-existent stakeholders; storing private items in private storage as indicated by links; creating shared records comprising links, placeholders, and shared items; adding integrity signatures to the shared records; and publishing the shared records to a shared medium.

Claims20

Dependent claims

A processor-implemented method for updating a shared medium comprising:

determining a uniform size of a data structure for all entries in the shared medium;
updating an entry to the shared medium comprising:
creating a first data structure of the size of the data structure for entries;
adding content to the first data structure;
and
adding dummy content to the first data structure until the size of the content and the size of the dummy content are the uniform size of the data structure for entries;
and
storing the entry in the shared medium.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/703,331Filed 13 Sep 2017

Published

US 2019/0081950 A114 Mar 2019

Granted

1 Feb 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

H04L 63/10
Network architectures or network communication protocols for network security: for controlling access to devices or network resources
G06F 21/6245
To a system of files or objects, e.g. local or distributed file system or database: protecting personal data, e.g. for financial or medical purposes
G06F 21/64
Protecting data: protecting data integrity, e.g. using checksums, certificates or signatures
H04L 9/088
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: usage controlling of secret information,…

Preventing statistical inference attacks on data that is shared among multiple stakeholders with disjoint access privileges

Life of this patent

Preventing statistical inference attacks on data that is shared among multiple stakeholders with disjoint access privileges

Life of this patent

Abstract

Claims20