Data Security Analysis of WebGIS Based on Tile-Map Technique

Abstract

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 pregenerated 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

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