项目名称: 隐私信息共享的秘密集合交集协议研究
项目编号: No.61300204
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 自动化技术、计算机技术
项目作者: 温雅敏
作者单位: 广东财经大学
项目金额: 23万元
中文摘要: 在许多网络应用中,用户往往一方面需要主动或被动去共享个人信息,另一方面又要保护敏感数据的机密性。在隐私保护的用户信息共享这一课题上,目前学术界和工业界研究的重点在于如何设计保护隐私信息的集合操作方式来实现隐私信息共享。在各种集合操作中,秘密集合交集运算可以使得符合要求的参与方能够计算交集实现信息共享,同时保证交集之外信息的机密性和隐私性。因此秘密集合交集协议成为了实现隐私信息共享的重要技术之一。 本项目首先研究基于不经意签名的授权秘密集合交集协议,尝试设计出复杂度线性优化的两方秘密集合交集协议。随后通过探索集合元素与策略的特定编码方式,构造支持复杂策略的秘密集合交集协议。最后深入研究多用户应用环境下隐私信息共享问题,设计并实现安全高效的多方秘密集合交集协议。
中文关键词: 信息共享;隐私保护;秘密集合交集;秘密握手;
英文摘要: In many newtork applications, users are required to share private information in active or passive, while the confidentiality of the sensitive data must be protected at the same time. On the topic of users information sharing with privacy-preserving properties, currently research and industry communities are focusing on how to design specific privacy information set operations. Private set intersection (PSI) protocols are proposed for solving the above problem in practical applications. Among set operations, private set intersections allow the participants who satisfy the requirments can share data through the set intersection, while the data outside the intersection can keep confidential and private. Thus PSI protocols become an important technique for realizing privacy-preserving information sharing. In this proposal, first we focus on the authorized private set intersection protocol based on oblivious signatures, and attemp to design two-party PSI with better performance. By exploiting the specific encoding method for data elements and policies, policy-enhanced PSI protocols will be constructed. Finally, based on the further research on the private information sharing problem in multi-user setting, we will try to design and implement secure and feasible multi-party PSI for group-oriented privacy information
英文关键词: Information sharing;Privacy preserving;Private set intersection;Secret handshakes;