Secure acknowledgment device for one-way data transfer system
US8732453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for relaying a hashed message from a first node to a second node, comprising an inlet interface for receiving a message from the first node, a hash number calculator for hashing the message from the inlet interface, an outlet interface for sending the hashed message to the second node, a first one-way data link for unidirectional transfer from the inlet interface to the hash number calculator, and a second one-way data link for unidirectional transfer from the hash number calculator to the outlet interface, is provided. The apparatus provides a secure mechanism and communication channel for relaying hashed acknowledgment messages from a receive node to a send node to inform the status of data transfer from the send node to the receive node across a one-way data link. The apparatus may be further implemented with the capability of comparing hashed messages from the two nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.