X-NegoBox: An Explainable Privacy-Budget Negotiation Framework for Secure Peer-to-Peer Energy Data Exchange
The increasing decentralization of modern energy systems is leading to a shift in roles among participants, where consumers are becoming prosumers—individuals who both consume and produce energy. This transformation is driving a continuous exchange of data among prosumers, aggregators, and market operators. However, the sensitive nature of this data poses significant privacy risks, as it can reveal household patterns and behaviors. Traditional data-sharing mechanisms often rely on fixed policies or predefined differential privacy budgets, which fail to accommodate the dynamic nature of data sensitivity and reliability. Consequently, prosumers are frequently left without clear explanations regarding the acceptance, rejection, or modification of their data-sharing requests, undermining trust and participation in these systems.
To tackle these critical challenges, researchers have developed a novel framework known as X-NegoBox, designed to provide explainable negotiation for adaptive privacy budgeting and transparent decision-making in peer-to-peer energy data exchange.
Key Features of X-NegoBox
X-NegoBox introduces several innovative components aimed at enhancing data privacy while maintaining usability and transparency:
- Local Data Management: Each prosumer’s data is securely stored within a private DataBox, ensuring that raw data remains confined and protected from unauthorized access.
- Autonomous Privacy Budget Negotiation Protocol (APBNP): This protocol evaluates incoming data requests and determines an appropriate privacy budget by considering various factors, including trust levels, feature sensitivity, stated purpose, historical behavior, and risk-aware pricing strategies.
- Privacy-Preserving Counter-Offers: In situations where data requests exceed acceptable privacy thresholds, APBNP can generate counter-offers that maintain privacy, such as offering reduced data resolution or shorter time durations.
- Explainable Agreement Layer (X-Contract): This layer provides both human- and machine-readable justifications for each decision made during the negotiation process, enhancing transparency and trust among participants.
- Sandbox Execution for Requesters: Upon reaching an agreement, the requester’s code is executed in a secure sandbox environment, where only sanitized outputs are shared, further safeguarding the prosumer’s data.
Experimental Results
Initial experiments conducted within realistic energy market settings have demonstrated the efficacy of the X-NegoBox framework. Results indicate a significant reduction in privacy leakage, alongside higher acceptance rates of data-sharing requests. Additionally, the framework has been shown to improve the interpretability of decisions made, thereby fostering greater trust among prosumers.
In conclusion, X-NegoBox presents a promising solution to the challenges faced in the peer-to-peer energy data exchange landscape. By prioritizing explainability and adaptability in privacy budgeting, it not only protects sensitive household information but also encourages active participation from prosumers in the energy market. As the energy sector continues to evolve towards decentralization, frameworks like X-NegoBox are crucial for ensuring secure and efficient data exchanges.
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