WMS Resources Protection Prototype illustrating paper "Protection Mechanisms for Geographic Data

Full reference map of Moorea island (French Polynesia) with all objects and no Security or Protection Rule

Click image above to view using OpenLayers

Zoomed-in map of Moorea island (French Polynesia) with all objects and no Security or Protection Rule

Click image above to view using OpenLayers

Legend:

Main Roads
Secondary Roads
Buildings B1, B2, B3, B4
Military areas Mil1 and Mil2
Military Hospital Mh
Pre-defined user positions P1 and P2 and a 400m circle around

Security Rules

In this demo and since the paper focuses on Protection mecanisms, we assume that : the security policy denies all objects to be displayed (except roads).

Protection Rules (see paper for details)

Rule 29 : Default Protection mechanism is hide
Rule 30 : If a taxi driving at 100 km is forbidden to display an object then his query should be rejected (reject_query)
Rule 31 : If a subject is forbidden to display a building within a radius of 40 km (400 meters for the present prototype) then the resolution of this building should be lowered (pixelizate)
Rule 32 : If a subject is forbidden to display a military area within a radius of 40 km (400 meters for the present prototype) then this military area should be masked (mask)
Rule 33 : If an ambulance is forbidden to display a military hospital within a radius of 40 km (400 meters for the present prototype) then the zoom-in factor should be lowered to 5 (zoom_in)
Protection rules priorities : Rule 30 > Rule 33 > Rule 32 >= Rule 31 > 29

Test our Prototype

Step 1 : Build your context

Select your role

Taxi Driver Ambulance Driver

Enter your speed

Select your zoom factor

Enter your distances to objects :

Predefined Position P1

Predefined Position P2

Customized Position

Building1	m
Building2	m
Building3	m
Building4	m
Military Hospital 1	m
Military Area 1	m
Military Area 2	m

Step 2 : Build your WMS query

Select your WMS Server

Select your Objects/Layers

Use Ctrl or shift to select multiple Objects

Select your Bounding Box

Min X :	* 189867.587<MinX<207673.324		Min Y :	* 8052574.945<MinY<8065936.066
Max X :	* 189867.587<MaxX<207673.324		Max Y :	* 8052574.945<MaxY<8065936.066

Select your output Width/Height

Width :

Height :

* locked to avoid inconsistencies

Select your output image format

Choose OpenLayers to zoom and pan

Select your Coordinate System (SRS)

Step 3 : Generate your WMS queries





ORIGINAL WMS Request	Protection rules applied	SECURED WMS Request

Step 4 : View your maps


Non Protected Map	Protected Map

All maps displayed on this page are dynamically built using WMS requests on a GeoServer 2.0.2 Map engine	Successfully tested on FireFox 3.5 and MS© Internet Explorer 8

Last modified : May 2011- © P. Capolsini