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Proceedings Paper

Research on key technologies for data-interoperability-based metadata, data compression and encryption, and their application
Author(s): Xu Yu; Quanqin Shao; Yunhai Zhu; Yuejin Deng; Haijun Yang
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Paper 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.

Paper Details

Date Published: 28 October 2006
PDF: 13 pages
Proc. SPIE 6421, Geoinformatics 2006: Geospatial Information Technology, 64210D (28 October 2006); doi: 10.1117/12.712647
Show Author Affiliations
Xu Yu, Institute of Geographical Sciences and Natural Resources Research (China)
Chinese Academy of Sciences (China)
Quanqin Shao, Institute of Geographical Sciences and Natural Resources Research (China)
Yunhai Zhu, Institute of Geographical Sciences and Natural Resources Research (China)
Chinese Academy of Sciences (China)
Yuejin Deng, Wuhan Univ. (China)
Haijun Yang, Institute of Geographical Sciences and Natural Resources Research (China)
Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 6421:
Geoinformatics 2006: Geospatial Information Technology
Huayi Wu; Qing Zhu, Editor(s)

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