Industrial protocol system authentication and firewall
US9054863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/1105
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the present invention provide machines, systems, and methods in which industrial control systems may be secured from compromise and/or disruption via authentication and firewall. In particular, an industrial controller may: randomly generate an exchange key and send the exchange key to a client device in response to a transaction request originating from the client device; combine the exchange key with a locally stored pass key to produce an authentication code; and compare a challenge key received from the client device to the authentication code to determine a match between the challenge key and the authentication code. A successful match between the challenge key and the authentication code may allow the client device to further access the industrial controller using a common industrial protocol (CIP), and a failed match between the challenge key and the authentication code may prevent the client device from further access to the industrial controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.