The Key Distribution Protocol for Moible Communication Systems with Untrusted Centers

Abstract

In this paper, we propose a verifiable server-aided computation protocol to help a user with small computation power compute the module P operation, where P is a large strong prime. Utilizing the protocol, we propose a new key distribution protocol used in mobile systems without trusted centers. In this new protocol , and two users can share the session key via the help of a untrusted center. The center has no chance to know the session key. Therefore, this key distribution protocol is more practical than those previous ones that require trusted centers.