106results about How to "Avoid malicious access" patented technology

The invention provides a car networking CAN data collection method. The method comprises the steps that a DBC file and a configuration file for car body information collection are generated according to the collection item of the car body information; a car networking back-end server sends the configuration file to a vehicle-mounted terminal; the vehicle-mounted terminal collects the car body information data on a bus according to the configuration file; a data package is generated for a car body information data group; the data package is transmitted back to the car networking back-end server; and the car networking back-end server parses the data package to acquire the car body information. According to the invention, the method has the advantages of high adaptability, small dependence on the terminal, high data security and rapid and efficient acquisition of the car body information, is free of manual field operation, is simple and efficient, and is not error-prone; the configuration file is universal, can dynamically match different vehicle models in a car networking system, and can meet the collection requirements of multiple CAN bus interfaces in a vehicle model; and the car networking system has high compatibility.

The invention relates to an access control method of a multimedia system on a secure operating system and a mobile terminal for achieving the method.The method comprises the steps that an application access request for selecting dependable applications is initiated for the secure operating system from client side applications of the multimedia system; whether the current client applications initiating calling are vicious applications or not is judged, if not, the next step continues, and if yes, the information that selection fails is returned to the client side applications, and processing is interrupted; the application access request is sent to the secure operating system from the multimedia system; the dependable applications are obtained in the secure operating system according to the application access request and returned to the multimedia system.According to the method, vicious access initiated by the vicious applications to the dependable applications in the secure operating system can be prevented under the condition of not switching the systems, and the problem that access to the dependable applications cannot be achieved due to vicious access can be avoided.

The invention provides an isolation method and an isolation device for an application program. The method comprises steps as follows: when a to-be-isolated application program stored in a storage path in a non-isolation region is detected, the storage path of application data of the to-be-isolated application program is modified to be a storage path in an isolation region; the access right of the application data in the storage path in the isolation region is modified, and only the application program has the access right to the application data. According to the technical scheme, the application data of the application program which needs to be protected are independently stored in the isolation region, so that only the isolated application program in the isolation region has the access right to the application data, and any application program outside the isolation region has no access right to the application data of the isolated application program in the isolation region; the probability that a malicious application program in the non-isolation region has access to private data of a user in the application data of the isolated application program is avoided; the safety of the isolated application program and the data safety and the property safety of a user are protected better.