Vector map data protection and access control method based on file filter driver

Abstract

The invention belongs to the fields of cryptography, information security, geographic information systems and digital image processing, and relates to a vector map data protection and access control method based on a file filter driver for carrying out data protection and file access control on a digital vector map. The method comprises the following steps: judging whether a file is a vector map file or not; putting the file into a control list; controlling rule integrity authentication; carrying out the file access control; encrypting and decrypting the file content; hiding the file size and control information; preventing data leakage when closing. According to the vector map data protection and access control method disclosed by the invention, the file filter driver is combined, transparent encryption and decryption and the file access control are carried out on vector map data at the bottom layer of an operating system, so that user operation habits are not affected, and the vector map data on a disk are ensured to be stored in a cipher text form to protect the security of the vector map data. Compared with data watermarking, the vector map data protection and access control method disclosed by the invention protects the vector map more thoroughly and reliably.

Description

technical field [0001] The invention belongs to the fields of cryptography, information security, geographic information system and digital image processing, and relates to a vector map data protection and access control method based on file filter drive for data protection and file access control of digital vector maps. Background technique [0002] With the rapid development of information processing technology and surveying and mapping technology, the application of spatial information is becoming more and more extensive. Digital vector maps have many advantages such as high precision, high-quality scaling, accurate positioning, convenient operation, and convenient update. It has become a geographic information system. , intelligent transportation system, digital city and digital national defense construction and other necessary support resources. At the same time, digital information and data are always facing security issues of being illegally copied, maliciously tamper...

AI Technical Summary

Problems solved by technology

First, the data information of the vector map is not well protected. Most of the watermarking technology only embeds the copyright to damage the accuracy of some data. Pirates can still steal the vector map and use it. Such an effect cannot be achieved at all. Prevent misappropriation of vector map data

Second, most watermark embedding methods are manual embedding, but according to relevant surveys, 80% of data information leakage is due to internal reasons

A few scholars have used transparent encryption and decryption in vector maps, but there are three flaws: First, the situation of copying data to existing files is not considered. If a vector map file is created in the mobile device in advance, and then Copy the vector map data to this file, the traditional filter driver will not process it, resulting in data leakage

Second, it does not take into account the characteristics of multiple outgoing vector maps, and cannot control the file opening time, opening times, etc., so that the security of the map cannot be effectively guaranteed

Third, operations such as renaming and deletion of vector map files cannot be controlled

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