BRUCE D DRAKE
Engineers in Cary, NC
License number
Pennsylvania PE054788E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Cary, NC 27513
Pennsylvania
Pennsylvania
Personal information
See more information about BRUCE D DRAKE at radaris.comName
Address
Phone
440 Askin Brick Rd, Ernul, NC 28527
39361 Centerville Rd, Centerville, PA 16404
566 Porter Trace Dr, Kernersville, NC 27284
913 Edinborough Dr, Durham, NC 27703
7903 Walkup Rd, Waxhaw, NC 28173
Professional information
Security Systems For Programmable Logic Controllers
US Patent:
2006008, Apr 20, 2006
Filed:
Oct 12, 2005
Appl. No.:
11/248656
Inventors:
Bruce Drake - Cary NC, US
Joseph Mall - Clayton NC, US
Kartik Subramanian - Raleigh NC, US
Nishant Bhatia - San Francisco CA, US
Joseph Mall - Clayton NC, US
Kartik Subramanian - Raleigh NC, US
Nishant Bhatia - San Francisco CA, US
International Classification:
H04N 7/167
US Classification:
380203000
Abstract:
A security system encrypts the password on an operator interface terminal without storing the password and sends the encrypted password to a programmable logic controller, where the password is again encrypted. The multiple-encrypted password is stored on the programmable logic controller. Even if an unauthorized individual were able to see the multiple-encrypted password, it would be difficult for the unauthorized individual to deduce the original password from the multiple-encrypted password. Accesses and changes of parameters are tracked and reportable.