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This article presents the first-ever blockchain which can simultaneouslyhandle device and data security, which is important for the emergingInternet-of-Everything (IoE). This article presents a unique concept ofblockchain that integrates hardware security primitives called PhysicalUnclonable Functions (PUFs) to solve scalability, latency, and energyrequirement challenges and is called PUFchain. Data management and security(and privacy) of data, devices, and individuals, are some of the issues in theIoE architectures that need to be resolved. Integrating the blockchain into theIoE environment can help solve these issues and helps in the aspects of datastorage and security. This article introduces a new blockchain architecturecalled PUFchain and introduces a new consensus algorithm called "Proof ofPUF-Enabled Authentication" (PoP) for deployment in PUFchain. The proposed PoPis the PUF integration into our previously proposed Proof-of-Authentication(PoAh) consensus algorithm and can be called "Hardware-AssistedProof-of-Authentication (HA-PoAh)". However, PUF integration is possible in theexisting and new consensus algorithms. PoP utilizes PUFs which are responsiblefor generating a unique key that cannot be cloned and hence provide the highestlevel of security. A PUF uses the nanoelectronic manufacturing variations thatare introduced during the fabrication of an integrated circuit to generate thekeys. Hence, once generated from a PUF module, the keys cannot be cloned orgenerated from any other module. PUFchain uses a PUF and Hashing module whichperforms the necessary cryptographic functions. Hence the mining process isoffloaded to the hardware module which reduces the processing times. PoP isapproximately 1,000X faster than the well-established Proof-of-Work (PoW) and5X faster than Proof-of-Authentication (PoAh).

PUFchain: Hardware-Assisted Blockchain for Sustainable Simultaneous Device and Data Security in the Internet of Everything (IoE)