CONFERENCE KEY DISTRIBUTION SCHEMES FOR SECURE DIGITAL MOBILE COMMUNICATIONS

In this paper, we propose a new service for digital mobile communicati on systems, The service enables two or more users to hold a secure con ference, Two requirements must be considered: privacy and authenticati on. Privacy involves ensuring that an eavesdropper cannot intercept th e conversations of the parties holding the conference. Authentication involves ensuring that service is not obtained fraudulently in order t o avoid usage charges. We present two new conference key distribution schemes for digital mobile communication systems. In these schemes, a group of users can generate a common secret key over a public channel so that they may hold a secure conference.