Nanchang, China May 22 - 24, 2009

Nanchang, China May 22 - 24, 2009

WISA 2009

WISA 2009

Second International Symposium on

Web Information Systems and Applications

Second International Symposium on

Web Information Systems and Applications

Home > Table of Contents

 

Proceedings of the 2nd International Symposium on Web Information Systems and Applications (WISA 2009)

Nanchang, China, May 22-24, 2009

Editors: Fei Yu, Jiexian Zeng, and Guangxue Yue

AP Catalog Number: AP-PROC-CS-09CN001

ISBN: 978-952-5726-00-8 (Print), 978-952-5726-01-5 (CD-ROM)

Page(s): 190-193

Data Security Analysis of WebGIS Based on Tile-Map Technique

Li Haiting, Peng Qingshan, Li Yanhong

Full text: PDF

Abstract

With the increasing popularity of global on-line mapping web applications (e.g. Google Maps, Microsoft Virtual Earth, Yahoo Maps), Tile-Map technique is widely used. Map tiles are a set of map images that have been pre-generated based on geographic vector data and the adoption of tile-map technique in the developed system dramatically decreases the loading time consumed for high quality image visualizations. With this technique, the geographic data (including raster data, vector data and attribute data) of WebGIS face great potential security challenge. This paper analyzed the publishing mode based on Tile-Map technique and discussed the security technology which need adopt, such as information hiding, digital watermarking, vector data encryption and restrictive rule of attribute data request. This paper also analyzed the disastrous result that the security leak may bring. From the different aspects, this paper gives the suggestions of the corresponding security mechanism. In particular, this paper gives the implementation to encrypt the http request URL and vector data using relatively simple JavaScript program language. Finally, this paper emphasizes the importance of improving the data security based on Tile-Map technique for the second time.

Index Terms

Tile-Map, WebGIS, security mechanism, tile caches, encode algorithm, digital watermarking

Copyright @ 2009 ACADEMY PUBLISHER All rights reserved