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Journal of Inforamtion Science and Engineering, Vol.18 No.3, pp.373-379 (May 2002)

Broadcasting Cryptosystem in Computer Networks Using
Geometric Properties of Lines*

Min-Shiang Hwang, Cheng-Chi Lee* and Ting-Yi Chang**
Department of Information Management
Chaoyang University of Technology
Taichung Hsien, 413 Taiwan
*Department of computer and Information Science
National Chiao Tung University
**Department of Information and Communication Engineering
Chaoyang University of Technology
Taichun Hsien, 413 Taiwan

In 1997, Wu and Wu proposed an improvement of the Chang-Wu broadcasting cryptosystem using geometric properties of lines. The Wu-Wu scheme gave a better performance and required fewer public parameters than the Chang-Wu scheme. In this paper the authors propose an improvement to the Wu-Wu scheme using geometric properties of line. This improvement reduces the computation and significantly decreases the parameters required as compared to the Wu-Wu scheme.

Keywords: broadcasting, cryptosystem, security, geometric, secret sharing

Full Text () Retrieve PDF document (200205_03.pdf)

Received September 6, 2001; revised January 8, 2002; accepted February 19, 2002.
Communicated by Chi Sung Laih
*This reseach was partially supported by the National Science Council, Taiwan, R.O.C., under contract no. NSC90-2213-e.324-004.