AUTHENTICATION SYSTEM AND METHOD FOR A REMOTE KEYLESS ENTRY SYSTEM

摘要

An authentication system and method changes (407) a symbolic value of a challenge count and encodes (411) it into an authentication symbol using an encoding process. Then, the symbolically-changed challenge count and the authentication symbol are transmitted (415). When received, the symbolically-changed challenge count is encoded (507) using the encoding process, and a receive-side derived authentication symbol is formed therefrom. Authentication is indicated (511) when the authentication symbol and the receive-side derived authentication symbol match.