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1. (WO2018204471) AUTOMATED CERTIFICATE ENROLLMENT FOR DEVICES IN INDUSTRIAL CONTROL SYSTEMS OR OTHER SYSTEMS

Pub. No.:    WO/2018/204471    International Application No.:    PCT/US2018/030608
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu May 03 01:59:59 CEST 2018
IPC: H04L 9/32
H04L 29/06
G05B 19/418
Applicants: HONEYWELL INTERNATIONAL INC.
Inventors: HOJSIK, Michal
POHANKA, Lukas
HARIDAS, Harshal S.
Title: AUTOMATED CERTIFICATE ENROLLMENT FOR DEVICES IN INDUSTRIAL CONTROL SYSTEMS OR OTHER SYSTEMS
Abstract:
A method includes receiving (610, 712), from a device (302), (i) a certificate request for a certification authority (304) and (ii) a first digital certificate (404). The certificate request is digitally signed by the first device, and the first digital certificate is stored in the device. The method also includes verifying (612, 714), at the certification authority, the first digital certificate using a second digital certificate of another certification authority (320). The method further includes verifying (614, 718) a digital signature of the certificate request using the first digital certificate. In addition, the method includes, after verifying the first digital certificate and the digital signature, transmitting (618, 722) a second digital certificate (406) to the device.