Application and Verification of Trusted Computing for Substation Automation Equipment

This paper proposes a method for applying trusted computing on substation automation equipment. The method builds trusted hardware and integrates the TPCM module on the CPU board of the substation automation equipment, making the TPCM the root of trust and gradually passing on the trust chain through the trust chain construction method. At the same time, dynamic and static trustworthiness methods are used to enable the device to eventually enter a trusted execution environment. A trusted computing management method for embedded automation equipment in substations has also been implemented. The trusted verification test shows that this method can achieve trusted verification without affecting the original functions and performance of the device, and the trusted verification accuracy reaches 100%.