Secure inter-process data identification method and system based on shared memory

The invention provides a secure inter-process data identification method and system based on a shared memory, belongs to the technical field of communication, and aims to solve the problems that an operating system must open access ways of multiple processes to the shared memory, illegal applications can often detect the existence of the shared memory, and the security is poor. In the prior art, an inspection mechanism of an operating system can be bypassed in various modes, and potential safety hazards exist, and the scheme comprises the following steps: starting SecSBI; the SecSBI hides a part of a physical memory area from an operating system, and the part of the physical memory area is reserved as a shared memory; the SecSBI checks the legality of the process and establishes a process of mapping the address of the shared memory: for the legal process, the page table of the legal process can be directly modified, so that the mapping of the shared memory is established in the address space of the process, a