Trusted platform module (TPM) fine-grained permission-based Android system security enhancement system and method

The invention discloses trusted platform module (TPM) fine-grained permission-based Android system security enhancement system and method. The system comprises an application layer, an application framework layer, a kernel layer and a hardware layer, wherein the application layer comprises a common application and an administrator application; the application framework layer comprises a user audit module, an installation program module and an application package file (APK) security instruction module; the kernel layer comprises a private data module, a privacy permission management module, a common data module and a shared region; and the hardware layer comprises a TPM. The TPM fine-grained permission-based Android system security enhancement system and method have the beneficial effects that the defects in traditional coarse-grained permission control are overcome through a fine-grained privacy permission distribution module; a multi-application and multi-permission distribution strategy is achieved; through the TPM, trusted storage, trusted identification and trusted reporting of the privacy permission can be achieved; with the TPM as a trusted root, the data security is ensured through a trust chain; a malicious application or progress elevation permission is prevented from accessing privacy data of other applications or progresses; the security mechanism is high; and the TPM fine-grained permission-based Android system security enhancement system and method can be widely applied to the environment with high demands on the security level.