| Title | Decentralizing loT Public- Key Storage using Distributed Ledger Technology |
| Publication Type | Conference Paper |
| Year of Publication | 2022 |
| Authors | Dreyer, Julian, Tönjes, Ralf, Aschenbruck, Nils |
| Conference Name | 2022 International Wireless Communications and Mobile Computing (IWCMC) |
| Date Published | may |
| Keywords | compositionality, distributed ledger, Distributed Ledger Technology, file storage, loT, Metrics, Performance analysis, Protocols, pubcrawl, Public key, public-key, resilience, Resiliency, Resistance, Scalability, scalable verification, smart contracts, Tamper-Resistance, Wireless communication |
| Abstract | The secure Internet of Things (loT) increasingly relies on digital cryptographic signatures which require a private signature and public verification key. By their intrinsic nature, public keys are meant to be accessible to any interested party willing to verify a given signature. Thus, the storing of such keys is of great concern, since an adversary shall not be able to tamper with the public keys, e.g., on a local filesystem. Commonly used public-key infrastructures (PKIs), which handle the key distribution and storage, are not feasible in most use-cases, due to their resource intensity and high complexity. Thus, the general storing of the public verification keys is of notable interest for low-resource loT networks. By using the Distributed Ledger Technology (DLT), this paper proposes a decentralized concept for storing public signature verification keys in a tamper-resistant, secure, and resilient manner. By combining lightweight public-key exchange protocols with the proposed approach, the storing of verification keys becomes scalable and especially suitable for low-resource loT devices. This paper provides a Proof-of-Concept implementation of the DLT public-key store by extending our previously proposed NFC-Key Exchange (NFC-KE) protocol with a decentralized Hyperledger Fabric public-key store. The provided performance analysis shows that by using the decentralized keystore, the NFC- KE protocol gains an increased tamper resistance and overall system resilience while also showing expected performance degradations with a low real-world impact. |
| Notes | ISSN: 2376-6506 |
| DOI | 10.1109/IWCMC55113.2022.9824878 |
| Citation Key | dreyer_decentralizing_2022 |
Decentralizing loT Public- Key Storage using Distributed Ledger Technology