Secure Ubiquitious House and Facility Control Solution

Transcription

1 Secure Ubiquitious House and Facility Control Solution Robin Acker and Michael Massoth Hochschule Darmstadt University of Applied Sciences Department of Computer Science Germany ICIW: 13th May 2010, Barcelona, Spain

2 Agenda 1. Introduction and System Design a. Motivation and Requirements b. System Architecture c. Components 2. Implementation and Security a. Security in GSM/GPRS Networks b. Security with BlackBerry-Infrastrucure c. Controlling Sensorboxes d. Graphical User Interface 3. Results and evaluation a. Testing and Service Access Time Benchmarking b. Conclusion and Evaluation c. Outlook on Future Work 2

3 Motivation and Requirements Many different standards on the home automation market User has to deal with many different control solutions Usability (1): Build a simple and secure solution for the user Usability (2): Control different systems with one remote UE 3

4 System Architecure 4

5 KNX Home Automation System Component (1): KNX Home Automation System KNX Bus System International standard (ISO/IEC 14543) Widely used Over 100 manufacturer companies 5

6 KNX Bus System Backbone Line Backbone Coupler Backbone Coupler Main Line 1 Main Line 2 Main Line 3 Main Line 15 Line Coupler Line Coupler Line 1 Line 2 Line 15 Line 1 Line 2 Line 15 End Device 6

7 KNX Addressing (1) Bit 15 Bit 0 M M M M L L L L D D D D D D D D Main Line Number Line Number Device Number 7

8 KNX Addressing (2) Backbone Line Backbone Coupler Backbone Coupler Main Line Main Line 2 Main Line Main Line 15 Line Coupler Line Coupler Line Line 2 Line End Device Line 1 Line 2? Line 15 Bit 15 Bit 0 M M M M L L L L D D D D D D D D Main Line Number Line Number Device Number 8

9 Inhouse Sensorbox Component (2): Sensorbox Allnet ALL4000 Ethernet Sensormeter 8 Sensorports, LAN interface Switching 16 wireless Poweroutlets Controllable via web interface 9

10 BlackBerry-Infrastructure Component (3): BlackBerry-Infrastrucure Connection between mobile device and BlackBerry- Enterprise-Server (BES) 10

11 Middleware Component (4): Middleware DCConnector Stores messages until mobile connection is available Asynchronous data exchange between smartphone and BES Conversion: Java-Objects XML (Content) Modular expandable (Content-Types) Client Server: HTTP-POST Server Client: PUSH 11

12 BlackBerry Smartphone Component (5): RIM BlackBerry Smartphone Business smartphone High security connection Java ME capable 12

13 Agenda 1. Introduction and System Design a. Motivation and Requirements b. System Architecture c. Components 2. Implementation and Security a. Security in GSM/GPRS Networks b. Security with BlackBerry-Infrastrucure c. Controlling Sensorboxes d. Graphical User Interface 3. Results and evaluation a. Testing and Service Access Time Benchmarking b. Conclusion and Evaluation c. Outlook on Future Work 13

14 Security (1) Security in GSM/GPRS Networks Encryption between mobile device and basestation No encryption between basestation and home appliance 14

15 Security (2) Security with BlackBerry-Infrastructure Fully encrypted End-to-End connection Using TripleDES or AES 15

16 Controlling Sensorboxes (1) 16

17 Controlling Sensorboxes (2) Get sensor values: Establish the HTTP connection Fetch XML-file Display information 17

18 Graphical User Interface 18

19 Agenda 1. Introduction and System Design a. Motivation and Requirements b. System Architecture c. Components 2. Implementation and Security a. Security in GSM/GPRS Networks b. Security with BlackBerry-Infrastrucure c. Controlling Sensorboxes d. Graphical User Interface 3. Results and evaluation a. Testing and Service Access Time Benchmarking b. Conclusion and Evaluation c. Outlook on Future Work 19

20 Testing and Benchmarking Service Access Time Testing and Benchmarking: Start trigger: HTTP request to fetch XML-file Stop trigger: Incoming http-response-code [N=100] 20

21 Conclusion Protoype of a secure ubiquitious house and facility control solution by using a BlackBerry Smartphone and the international KNX standard for home automation 21

22 Future Work and Outlook Use features of Next Generation Networks => SIP, Presence and IP Multimedia Subsystem Build a middleware between the mobile device and the KNX home automation system Use other mobile devices besides BlackBerry (like e.g. Android based) 22

23 Thank you very much for your attention! Any questions? Questions and discussion 23

24 Security Device access: Access protection by password Local data encrypted (SD-Card as well) Device- / Passwordprotection Repeated false passwords results in a lost of all data on the device. 24