一种实用的多数据库量子信息检索协议

A Practical Multi-Database Quantum Private Queries Protocol

针对目前量子私有信息检索不能适用与云存储的多数据库问题,基于现在成熟的量子密钥分发方法,提出了一种适合在多数据库环境下,实用的量子私有信息检索协议。对于不同大小的数据库,协议可通过调节参数θ和k,在保证数据库安全及用户隐私的情况下,完成信息的检索。性能分析结果表明,协议的通信复杂度低,检索成功率高、易于实施。

This paper,based on the QKD technology which is mature now,proposes a practical QPQ protocol for multi-database retrieval optimized for current multi-databases in cloudy storage. For different sizes of the database,by adjusting the parameters θ and k,the information can be retrieved,while the safety of database and privacy of the user are ensured. Performance analyses indicate that the protocol has a low communication complexity and a high success ratio in information retrieval,and is easy to implement.