计算机科学
加密
时间戳
客户端
密码学
方案(数学)
对称密钥算法
密码原语
数据库
计算机安全
计算机网络
密码协议
公钥密码术
数学分析
数学
作者
Hanqi Zhang,Chang Xu,Rongxing Lu,Liehuang Zhu,Chuan Zhang,Yunguo Guan
出处
期刊:IEEE Transactions on Services Computing
[Institute of Electrical and Electronics Engineers]
日期:2023-11-01
卷期号:16 (6): 3972-3985
标识
DOI:10.1109/tsc.2023.3301712
摘要
Considerable attention has been paid to dynamic searchable symmetric encryption (DSSE) which allows users to search on dynamically updated encrypted databases. To improve the performance of real-world applications, recent non-interactive multi-client DSSE schemes are targeted at avoiding per-query interaction between data owners and data users. However, existing non-interactive multi-client DSSE schemes do not consider forward privacy or backward privacy, making them exposed to leakage abuse attacks. Besides, most existing DSSE schemes with forward and backward privacy rely on keeping a keyword operation counter or an inverted index, resulting in a heavy storage burden on the data owner side. To address these issues, we propose a non-interactive multi-client DSSE scheme with small client storage, and our proposed scheme can provide both forward privacy and backward privacy. Specifically, we first design a lightweight storage chain structure that binds all keywords to a single state to reduce the storage cost. Then, we present a Hidden Key technique, which preserves non-interactive forward privacy through time range queries, ensuring that data with newer timestamps cannot match earlier time ranges. We conduct extensive experiments to validate our methods, which demonstrate computational efficiency. Moreover, security analysis proves the privacy-preserving property of our methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI