Rosemount Inc.

Khoi Minh Nguyen

Dirk Willy Bauschke

Scott Gregory Holm-Hansen

Scott Andrew Johansen

Field devices used to measure process parameters can also function as a data historian by storing process data and associated time stamps. In response to a request for stored process data, the field device uses a cipher and a secret method to generate an encrypted validation string that is provided along with unencrypted information including the process data and time stamps. A validation service that maintains a secure database of field devices and their associated ciphers and secret methods can validate the unencrypted information by using the validation string.

Growing community of inventors

Eden Praire, MN, United States of America

Khoi Minh Nguyen