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arXiv · 2406.19042

Towards Credential-based Device Registration in DApps for DePINs with ZKPs

Jonathan Heiss·Fernando Castillo·Xinxin Fan
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Abstract

Decentralized Physical Infrastructure Networks (DePINS) are secured and governed by blockchains but beyond crypto-economic incentives, they lack measures to establish trust in participating devices and their services. The verification of relevant device credentials during device registration helps to overcome this problem. However, on-chain verification in decentralized applications (dApp) discloses potentially confidential device attributes whereas off-chain verification introduces undesirable trust assumptions. In this paper, we propose a credential-based device registration (CDR) mechanism that verifies device credentials on the blockchain and leverages zero-knowledge proofs (ZKP) to protect confidential device attributes from being disclosed. We characterize CDR for DePINs, present a general system model, and technically evaluate CDR using zkSNARKs with Groth16 and Marlin. Our experiments give first insights into performance impacts and reveal a tradeoff between the applied proof systems.

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Jonathan Heiss, Fernando Castillo, Xinxin Fan. 2024-06-27. Towards Credential-based Device Registration in DApps for DePINs with ZKPs. https://arxiv.org/abs/2406.19042

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