空间数据文件的实时版权保护  

Real-time Copyright Protection for Spatial Data Files

作　　者：李安波[1] 闾国年[1] 周良辰[1] 林冰仙[1] 顾竹[1] 

机构地区：[1]南京师范大学虚拟地理环境教育部重点实验室,南京210046

出　　处：《地球信息科学》2009年第1期18-23,共6页Geo-information Science

基　　金：国家"863计划"专题课题"GIS矢量数据产品版权保护的关键技术研究"(2006AA12Z222)。

摘　　要：地理空间数据是国家重要的战略性信息资源,是经济、国防建设和社会发展的基础数据,因此,其版权保护问题至关重要。面向空间数据文件的版权保护的需求,本文在利用传统版权标记技术,特别是数字水印技术进行文件认证的基础上,通过文件系统过滤驱动技术及加密技术,实现了数据文件的动态加解密和版权标记的实时检测功能,形成了空间数据文件的实时版权保护方案。该方案有效弥补了目前版权标记技术仅用于认证的不足,可进一步实现对空间数据文件的内容保密、实时版权标记检测与访问控制,客观上降低了对版权标记嵌入容量及嵌入算法鲁棒性的要求。Geospatial data is a kind of strategic information resource and is widely used in economic, social and environmental applications. GIS vector data is closely related to the overall situation of socio-economic development and national security due to its high production cost and high precisions. In recent years, researches about copy- right protection of GIS vector data mainly focus on copyright marking techniques. To meet the requirements of copyright protection for spatial data files, a real-time copyright protection scheme for spatial data files is proposed in this study, based on the Copyright Marking technology, especially on the Digital Watermarking technology which was only used for the authentication, file system filter driver technology and encryption technology, which can be used for dynamic encryption and decryption of data files and real-time detection of copyright marking. This scheme achieves the purposes to keep confidential, detect copyright marking in a real-time way and control access. In addition, it lowers the limitations on the capacity of copyright marking information and the robustness of embedding algorithms.

关 键 词：过滤驱动 实时版权保护 GIS 空间数据文件 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]