Searchable public key encryption- (SPE-) supporting keyword search plays an important role in cloud computing for data confidentiality. The current SPE scheme mainly supports conjunctive or disjunctive keywords search which belongs to very basic query operations. In this paper, we propose an efficient and secure SPE scheme that supports Boolean keywords search, which is more advanced than the conjunctive and disjunctive keywords search. We first develop a keyword conversion method, which can change the index and Boolean keywords query into a group of vectors. Then, through applying a technique so-called dual pairing vector space to encrypt the obtained vectors, we propose a concrete scheme proven to be secure under chosen keyword attack. Finally, we put forward a detailed theoretical and experimental analysis to demonstrate the efficiency of our scheme.

中文翻译：

---

在公钥设置中对加密的云数据进行有效的布尔关键字搜索

支持关键字搜索的可搜索公钥加密（SPE）在云计算中为数据机密性起着重要作用。当前的SPE方案主要支持连接或分离关键字搜索，属于非常基本的查询操作。在本文中，我们提出了一种支持布尔关键字搜索的有效且安全的SPE方案，该方案比联合和非联合关键字搜索都先进。我们首先开发一种关键字转换方法，该方法可以将索引和布尔关键字查询更改为一组向量。然后，通过应用所谓的双配对向量空间技术对获得的向量进行加密，我们提出了一种被证明在选择的关键词攻击下是安全的具体方案。最后，