摘要
针对现有多用户密文检索方案的安全隐患,提出了一种可撤销的云安全多用户密文检索方案。陷门包含长期私钥和时间私钥,用户对时间私钥进行周期性更新,当用户想要撤销对云服务器的授权时,仅需停止分发时间私钥。同时,所提方案可以通过公共信道传输时间私钥,极大地减少了信道建立的代价。最后,给出了性能和仿真实验分析。结果表明,所提方案在实现授权撤销功能的同时,具有安全性高、检索速度快等优点。
A revocable public key encryption with equality test scheme is proposed for the potential security threats.The trapdoor contains a long-term private key and a private time key.The user is responsible to periodically update the private time key.When he/she wants to revoke the cloud server’s test right,he/she only needs to stop distributing the private time key to the cloud server.Furthermore,the private time key can be transmitted through the public channel,which reduces the cost of channel establishment.Finally,the performance and simulation experiment of this scheme are analyzed.The result shows that the proposed scheme has higher security and better computational efficiency while achieves revocation of authorization.
作者
马莎
杨钿
杜皎皎
凌云浩
MA Sha;YANG Tian;DU Jiaojiao;LING Yunhao(College of Mathematics and Informatics,South China Agricultural University,Guangzhou 510642,China;Software Engineering Institute,East China Normal University,Shanghai 200062,China)
出处
《实验室研究与探索》
CAS
北大核心
2024年第2期18-22,共5页
Research and Exploration In Laboratory
基金
广东省自然科学基金项目(2020A1515010751)。
关键词
云安全
公钥加密
多用户密文检索
撤销
cloud security
public key encryption
equality test
revocation
