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Oracles in Decentralized Finance: Attack Costs, Profits and Mitigation Measures.
Ayana T Aspembitova1, Michael A Bentley1
1Euler Labs, London EC1V 2NX, UK.
Entropy (Basel, Switzerland)
|January 21, 2023
Summary
Decentralized finance (DeFi) oracles are crucial for blockchain apps needing real-world data. This study models decentralized exchange oracles to prevent price manipulation attacks in DeFi.
Area of Science:
- Blockchain Technology
- Decentralized Finance (DeFi)
- Financial Cryptography
Background:
- Decentralized finance (DeFi) is a rapidly growing application of blockchain technology.
- DeFi protocols require external data, such as asset prices, necessitating the use of oracles.
- Existing oracle solutions in DeFi have limitations, with a specific focus on decentralized exchange (DEX) oracles being underexplored.
Purpose of the Study:
- To analyze the limitations of oracles in decentralized finance (DeFi).
- To investigate the mechanisms of decentralized exchanges (DEXs) serving as price oracles.
- To introduce a novel algorithmic model for designing secure decentralized oracles and mitigating price manipulation risks.
Main Methods:
- Review of existing oracle types within DeFi applications.
- Detailed explanation of the operational mechanisms of decentralized exchanges (DEXs).
- Development of an algorithmic model for decentralized oracle design and parameter adjustment.
Main Results:
- Identified decentralized exchange (DEX) protocols as an under-researched but critical type of oracle in DeFi.
- Presented a functional algorithmic model for constructing decentralized oracles.
- Demonstrated how the model's logic can help in parameter adjustment to enhance oracle security.
Conclusions:
- Understanding and implementing the proposed algorithmic model can significantly improve the security of DeFi oracles.
- The research contributes to reducing vulnerabilities against price manipulation attacks, a common threat in DeFi.
- This work provides a framework for safer decentralized oracle design, enhancing the overall integrity of decentralized financial systems.
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