Cryptanalysis and Improvement of Key Distribution System for VSAT Satellite Communications

Article type: Research Article

Authors: Tseng, Yuh-Min^;

Affiliations: Department of Information Management, Nan-Kai College, Nantou, Taiwan 542, R.O.C. E-mail: tym@nkc.edu.tw

Note: [] This research was partially supported by National Science Council, Taiwan, R.O.C., under contract no. NSC89-2213-E-252-008.

Abstract: Recently, Park and Lim (1998) proposed two key distribution systems for secure VSAT satellite communications. One provides indirect authentication, and another scheme enables that two parties can directly authenticate each other. However, this article will show that the proposed schemes are insecure enough by presenting two impersonation attacks on them. Besides, an improved scheme will be proposed, which is secure against the impersonation attack and provides direct mutual authentication between two parties.

Keywords: satellite communication, key distribution, cryptanalysis

DOI: 10.3233/INF-2002-13308

Journal: Informatica, vol. 13, no. 3, pp. 369-376, 2002