A searchable encryption of CP-ABE scheme in cloud storage

Cloud storage is an important service of cloud computing, which offers services for data owners to host their data in the cloud. But cloud computing also brings new and challenging security threats to the outsourced data. In order to regain security assurances and access control in the cloud storage, we analyzes the access control algorithm of Ciphertext-policy attribute-based encryption. In this paper, we combining a security homomorphic encryption algorithm with the traditional CP-ABE algorithm, we constructed a Searchable Encryption CP-ABE (SE-CP-ABE) access control scheme, and give the security analysis and experimental analysis for the scheme. The experimental results show that SE-CP-ABE scheme is not only ensures the security of CP-ABE, but also implements ciphertext retrieval and reduces the retrieval time.