The invention discloses a 
security management method and a 
system for the vehicular 
mobile Internet. When an application program accesses a vehicular terminal, the vehicular terminal judges the 
authorization of the application program. When the 
authorization of the application program is the runtime 
authorization of a local access, the application program directly accesses the vehicular terminal information. When the authorization of the application program is the remote authorization of a remote access, the vehicular terminal authenticates the access authority of the application program through a 
server side. If the authorization is passed, the application program accesses the vehicular terminal information. The 
server side provides register, application, safe 
key management and application audit service for application developers of a 
third party, and the application access authority of the 
third party is saved in the 
server side. Through the interaction of the vehicular terminal and the 
server side and the own management of the vehicular terminal, the method and the 
system adopt a high-efficiency 
authentication mechanism and an 
encryption communication mechanism, so that the safety management of vehicular application is easily realized, and the critical data of the vehicular terminal cannot be embezzled by illegal application. Thus, a car accesses the 
mobile Internet to share the convenience and fast of the network, and while the privacy data of users cannot be stolen.