计算机科学
加密
云计算
服务器
同义词(分类学)
密码学
密文
正确性
模幂
云存储
计算机安全
理论计算机科学
情报检索
数据库
公钥密码术
计算机网络
算法
操作系统
生物
属
植物
作者
Chengjin Yang,Dongdong Xie,Linxi Cai,Pinghui Wang
标识
DOI:10.1109/dasc/picom/cbdcom/cy55231.2022.9927832
摘要
Searching directly on encrypted data is a fundamental problem with many real-world applications, including cloud storage retrieval and image recognition. Most traditional searchable encryption schemes assume that cloud servers are honest and curious. However, in real applications, cloud servers can also be malicious. We establish a trust system through blockchain technology to enable fair transactions between several untrusted entities. In this paper, we design a reliable smart contract to perform ciphertext retrieval instead of a central cloud server to ensure the correctness of retrieval results and fairness of transactions. We further utilize Word2Vec to train the semantic model to transfer each keyword to the corresponding vector and map synonyms to the approximate vector to support synonym search. We propose a blockchain-based forward and backward private fuzzy multi-keyword searchable encryption (FBPB-SE). In terms of security, we show that FBBP-SE can provide both forward and backward security proofs. We experimentally show the feasibility and efficiency of the scheme.
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