Published Paper Details:

This paper focuses on integrating Zero-Trust Architecture (ZTA) and blockchain technology to improve the security and reliability of Secure Multi-Party Computation (MPC) in Decentralized Finance (DeFi). Traditional security models are unsuited to the decentralized and trustless nature of the DeFi model where MPC can take place providing privacy-preserving financial operations whilst still absorbing sensitive data which is exposed. By pairing together ZTA's "never trust, always verify" philosophy and blockchain's immutable, transparent ledger, we propose a many layered architectural schema that would provide for continuity in verification, decentralized policy enforcement and tamper proof auditing. The integration addresses important security issues like the misbehavior of nodes, input corruption, and collusion, and encouraged scalability, compliance, and resilience. Practical feasibility of the approach is demonstrated by case studies of projects such as Chainlink DECO and Threshold Network. Besides its application in finance, the proposed model provides potential implications for DeFi and other privacy-sensitive fields that require clinicians' trust when storing and accessing data.