ABKS has drawn much attention from research and industry in recent years, an ABKS scheme is an encryption scheme that supports keyword search and access control. Attribute-Based Encryption is a public key encryption that enables users to encrypt and decrypt message based on attributes. In a typical implementation, the size of the ciphertext is proportional to the number of attributes associated with it and the decryption time is proportional to the number of attributes used during decryption. Inherit from ABE technology, the computation cost and ciphertext size in most ABKS schemes grow with the complexity of the access policy. On the other hand, we found that the traditional ABKS schemes cannot resist our secret-key-recovery attack. To deal with the above problems, we present new ciphertext policy attribute based encryption with fast keyword search constructions. Our constructions preserve the fine-grained access control inherited from the ABE system while supporting hidden policy and fast keyword search. Our constructions feature multi-value-independent compared with the existing attribute based searchable encryption schemes. The performance analysis demonstrates the efficiency of our constructions. We offer rigorous security proof of our second scheme, which is IND-CKA and IND-CPA secure.

中文翻译：

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具有快速关键字搜索的多值独立的基于密文策略属性的加密

ABKS近年来受到了研究和工业界的广泛关注，ABKS方案是一种支持关键字搜索和访问控制的加密方案。基于属性的加密是一种公钥加密，使用户能够根据属性对消息进行加密和解密。在典型的实现中，密文的大小与其关联的属性数量成正比，解密时间与解密期间使用的属性数量成正比。继承了 ABE 技术，大多数 ABKS 方案中的计算成本和密文大小随着访问策略的复杂性而增长。另一方面，我们发现传统的 ABKS 方案无法抵抗我们的密钥恢复攻击。针对以上问题，我们提出了具有快速关键字搜索结构的新的基于密文策略属性的加密。我们的结构保留了从 ABE 系统继承的细粒度访问控制，同时支持隐藏策略和快速关键字搜索。与现有的基于属性的可搜索加密方案相比，我们的结构具有多值独立性。性能分析证明了我们构造的效率。我们为我们的第二个方案提供严格的安全证明，即 IND-CKA 和 IND-CPA 安全。性能分析证明了我们构造的效率。我们为我们的第二个方案提供严格的安全证明，即 IND-CKA 和 IND-CPA 安全。性能分析证明了我们构造的效率。我们为我们的第二个方案提供严格的安全证明，即 IND-CKA 和 IND-CPA 安全。