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. Author manuscript; available in PMC: 2020 Feb 28.
Published in final edited form as: ACM Transact Des Autom Electron Syst. 2019;24(3):10.1145/3315571. doi: 10.1145/3315571

Figure 5:

Figure 5:

A decentralized “ledger” composed of several certificate authority (CA) nodes (denoted with the black dot •). Each CA node keeps a local database for the chip ID enrollment and verification, in which the detailed information like marking, ECID, PCB ID (PID), system ID (SID), transaction time and stage of an electronic component are stored. Upon the deployment, this CA network can serve for mutual authentication with each other, and provide verification service to different electronics supply chain participants.