Vehicle-mounted domain controller chip system and method for improving safety of vehicle-mounted domain controller

The invention relates to a vehicle-mounted domain controller chip system and a method for improving the safety of a vehicle-mounted domain controller. The method comprises the steps that a main controller end and an HSM end are designed on the top layer of a vehicle-mounted domain controller chip, the main controller end is used for processing vehicle-mounted tasks and comprises a kernel, a basic software layer, a runtime environment and an application layer, and the HSM end is used for processing service requests related to information safety and comprises a session layer, an HSM connection layer, an HSM driving layer and HSM hardware. Through the HSM with the independent core, the main controller end and multiple application programs can share security service and hardware resources provided by the HSM, interaction between the HSM end and the main controller end is achieved through a hardware mechanism of process synchronization and data exchange, and physical isolation of the HSM end and the main controlle