Research In Security Protection Of Vector-map

With the development of electronic mapping technology, the digital vector maps are usedmore and more widely. Due to the vector maps cost expensively and they are easy to copy,more and more people begin to pay attention to the security of the digital vector map. Ifneglecting the protection of the vector map, it will bring loss to enterprise, even threat to ourcountry. The security of vector map has become the focus of Information Security currently.The tradition way to protect the security of the vector map is by manual encryption.Although manual encryption can protect the vector map, and prevent the illegal users usingmap files, it’s very complex, and it will delay user’s efficiency. It can’t prevent peoplestealing the map files in the company.With the analysis above, this paper used Windows File Filter Driver technology andCloud Model technology to protect vector map files, combining with the format of SHP filewhich is a major vector map file. Using file filter driver to intercept the user’s operation to amap file. Using drops which generated by cloud model to encrypt\decrypt the points of themap. Using double-buffing technology to solve security access control between authorizedusers and non-authorized users. The whole process is automatic, it doesn’t need to change theuser’s custom when using map files. And the security and efficiency are ensured because thewhole process is running in the Windows kernel.Finally, I have experimentalized the Vector-Map Security Protecting System in my Lab.By the result of testing in the local network where we install our security system, we can usethe encrypted vector file normally. But when we took the files out of the environment whereour security system not exist, because of lacking of the decrypting mechanism, we can’t usethe vector map.