Patent · US Active

Removable security modules and related methods

US8977851B2 · kind B2 · utility

36Cited by

19References

30Claims

0Family size

Assignee

FISHER-ROSEMOUNT SYSTEMS, INC. · US

Inventors

Lee Allen Neitzel · Austin, US
Gary K. Law · Georgetown, US
Godfrey R. Sherriff · Austin, US

Key dates

Filing date	Jan 21, 2009
Grant date	Mar 10, 2015
Priority date	—
Expiry date	Jan 22, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06F12/1408
WIPO fieldControl
WIPO sectorInstruments

Abstract

Example removable security modules for use with process control devices and related methods are disclosed. An example removable security module includes a body configured to be removably coupled to the process control device and a memory disposed in the body with a shared secret stored in the memory. The example removable security module also includes a processing unit disposed in the body, coupled to the memory and configured to read information from the process control device, compare the information to the shared secret and authenticate the process control device based on the comparison.

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