| 尹鑫,田有亮,王海龙.公平理性委托计算协议.软件学报,2018,29(7):1953-1962 |
| 公平理性委托计算协议 |
| Fair and Rational Delegation Computation Protocol |
| 投稿时间：2017-05-30 修订日期：2017-07-13 |
| DOI：10.13328/j.cnki.jos.005362 |
| 中文关键词: 理性委托计算 子博弈精炼纳什均衡 比特币 Micali-Rabin随机向量表示技术 博弈论 |
| 英文关键词:rational delegation computation sub-game perfect Nash equilibrium bitcoin Micali-Rabin's random vector representation technique game theory |
| 基金项目:国家自然科学基金（61363068，61662009，61772008）；贵州省教育厅科技拔尖人才支持项目（黔教合KY字[2016]060）；贵州大学研究生创新基金（院创201702） |
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| 中文摘要: |
| 传统委托计算的验证过程计算和通信开销较高，且参与者要么诚实，要么邪恶；理性委托计算是引入理性参与者，通过效用函数来保障计算结果的可靠性.首先在委托计算中引入博弈论，给出了唯一稳定均衡解.其次，基于比特币和Micali-Rabin的随机向量表示技术，设计一种新的理性委托计算协议.针对协议的公平性问题，参与双方分别提交特殊构造的比特币押金，保障参与者双方的利益；针对验证复杂问题，运用Micali-Rabin的随机向量表示技术，验证过程简单、高效，且不会泄漏关于计算结果的任何信息.最后，安全性和性能分析结果表明，该协议不但解决了传统委托计算的验证复杂问题，同时保证了诚实者的利益. |
| 英文摘要: |
| The verification process of the traditional delegation computation has higher computation and communication overhead as the participants are either honest or malicious. The rational delegation computation is the introduction of rational participants, and the utility function is used to guarantee the reliability of the computational results. This paper first introduces game theory into the delegation computation, and gives the only stable equilibrium solution. Second, based on the bitcoin and Micali-Rabin's random vector representation technique, a new rational delegation computation protocol is devised. The involved players, for the protocol's fairness, commit a special structured bitcoin deposit respectively, which guarantees the interests of both parties. The Micali-Rabin's technique is used for tackling the protocol's complex verification, and the verification is simple and efficient without any leak about the results. Finally, the security and performance analysis results show that the proposed protocol not only solves the complex traditional verification problem, but also ensures the interests of the honest parties. |
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