关键词: 矢量地图, 脆弱数字水印, 完整性

Abstract: The method of integrity authentication for vector maps are described at fist，then digital watermarking for vector digital are introduced.Finally，a fragile watermarking algorithm for vector maps is proposed，which is based on that the vector map is divided into a series of smaller subareas，and watermarking information is embedded in this subareas.The extraction procedure not only verifies integrity of the watermarked vector map，but also locates modification.The watermarked vector map can be used for its data that has been modified slightly，and the original vector map can be restored by extraction procedure for special application.

Key words: vector map, fragile watermarking, integrity