Fast Password Authentication Protocol in Auto-guard of Car Based on Cellphone

Due to the shortcoming of existing auto-guard of car, we propose its new design philosophy. First, the car can be controlled and locked by a cellphone, in which the user identity is confirmed by password, and the data are transferred through the Bluetooth or RF channel. Then, we present a secure and fast mutual password authentication protocol. Accordingly, the system architecture of car's auto-guard is designed, which consists of an embedded system in server and a cellphone software in client. Our experiments show that the new proposal is efficient and convenient which can solve most of the existing security problems.