Research on key technologies for data-interoperability-based metadata, data compression and encryption, and their application

Xu Yu; Quanqin Shao; Yunhai Zhu; Yuejin Deng; Haijun Yang

doi:10.1117/12.712647

28 October 2006 Research on key technologies for data-interoperability-based metadata, data compression and encryption, and their application

Xu Yu, Quanqin Shao, Yunhai Zhu, Yuejin Deng, Haijun Yang

Author Affiliations +

Proceedings Volume 6421, Geoinformatics 2006: Geospatial Information Technology; 64210D (2006) https://doi.org/10.1117/12.712647
Event: Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 2006, Wuhan, China

Abstract

With the development of informationization and the separation between data management departments and application departments, spatial data sharing becomes one of the most important objectives for the spatial information infrastructure construction, and spatial metadata management system, data transmission security and data compression are the key technologies to realize spatial data sharing. This paper discusses the key technologies for metadata based on data interoperability, deeply researches the data compression algorithms such as adaptive Huffman algorithm, LZ77 and LZ78 algorithm, studies to apply digital signature technique to encrypt spatial data, which can not only identify the transmitter of spatial data, but also find timely whether the spatial data are sophisticated during the course of network transmission, and based on the analysis of symmetric encryption algorithms including 3DES,AES and asymmetric encryption algorithm - RAS, combining with HASH algorithm, presents a improved mix encryption method for spatial data. Digital signature technology and digital watermarking technology are also discussed. Then, a new solution of spatial data network distribution is put forward, which adopts three-layer architecture. Based on the framework, we give a spatial data network distribution system, which is efficient and safe, and also prove the feasibility and validity of the proposed solution.

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Xu Yu, Quanqin Shao, Yunhai Zhu, Yuejin Deng, and Haijun Yang "Research on key technologies for data-interoperability-based metadata, data compression and encryption, and their application", Proc. SPIE 6421, Geoinformatics 2006: Geospatial Information Technology, 64210D (28 October 2006); https://doi.org/10.1117/12.712647

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KEYWORDS

Digital watermarking

Data compression

Data storage

Databases

Image compression

Computer security

Network security

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