Method for controlling file access of GIS vector data

Abstract

The invention discloses a method for controlling the file access of GIS (geographical information system) vector data. The method comprises three technical links: the insertion of the copyright mark m into the GIS vector data file, the extraction of the copyright mark m and the data recovery, and the data application monitoring and the data access control, wherein, the copyright mark m is divided into copyright marks for indication and certification. When the GIS vector data products are published, an excessive amount of copyright marks are inserted into the published products by the reversible watermark algorithm and the data accuracy is intentionally reduced, therefore, on one hand, the application of data-sharing among subscribers for educational and general purposes can be supported by directly downloading the data, and on the other hand, the commercial use of data can be limited by reducing the data accuracy. When the data is applied among high-end subscribers for research and commercial purposes, the extraction of the copyright mark and the data recovery can be realized in a real-time and open manner by installing the monitoring program based on the filter driver technology, thereby not only realizing the copyright certification on a real-time basis and acquiring the original lossless data products, but also limiting the unauthorized operation of validated subscribers.

Description

technical field [0001] The invention relates to a GIS vector data file access control method based on a copyright mark and file filtering drive, which belongs to the copyright protection technology of geographic information. Background technique [0002] The characteristics of easy copying and dissemination of geospatial data products, and the rapid development of the Internet / Intranet provide a faster dissemination channel for geospatial data sharing, which makes the illegal use of geospatial data products very rampant and seriously affects geospatial data products. The healthy and sustainable development of the market. How to regulate the geospatial data product market based on copyright protection technology and legislation, protect the legitimate interests of data producers, prove the copyright ownership of data, and promote shared applications has become a top priority for the research and application of geographic information security and copyright protection. The pro...

AI Technical Summary

Problems solved by technology

Although certain copyright authentication and access control have been achieved based on the above two technologies, due to the isolated use of the two technologies, there are still the following deficiencies: (1) The pure copyright marking technology is mainly used in copyright authentication, while the most important aspect of copyright protection The appropriate way should be to implement access control based on copyright authentication, so as to be able to stop the occurrence of illegal user infringement and legal user ultra vires in real time; (2) The access control method based on GIS vector digital content encryption, although for illegal users However, it is difficult to restrict the unauthorized operation of legitimate users, and it is difficult to prove the copyright ownership of digital content and track the distribution of digital content

Moreover, due to the encryption of GIS vector data content, the data sharing application of teaching users is limited, the trial and initial experience of data products are limited, and the curiosity and attention of attackers will also be aroused.

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