Trusted Computing Base (TCB)

Trusted computing base (TCB) is the collection of the hardware, firmware and software within a given computer system that contains all the elements of the overall system that are responsible for supporting the security policy and the isolation of objects.

Trusted computing base (TCB) is a hardware, software and firmware based security solution designed to create secure computing platform. It is useful to enforce security policies through security perimeters, reference monitors and security kernels.