Cryptanalysis and Improvement of Key Distribution System for VSAT Satellite Communications
Volume 13, Issue 3 (2002), pp. 369–376
Pub. online: 1 January 2002
Type: Research Article
This research was partially supported by National Science Council, Taiwan, R.O.C., under contract no. NSC89-2213-E-252-008.
Received
1 June 2002
1 June 2002
Published
1 January 2002
1 January 2002
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.