Visible to the public Policy Based on Homomorphic Encryption and Retrieval Scheme in Cloud Computing

TitlePolicy Based on Homomorphic Encryption and Retrieval Scheme in Cloud Computing
Publication TypeConference Paper
Year of Publication2017
AuthorsDing, Y., Li, X.
Conference Name2017 IEEE International Conference on Computational Science and Engineering (CSE) and IEEE International Conference on Embedded and Ubiquitous Computing (EUC)
KeywordsAccess Control, attribute encryption, attribute revocation, authorisation, ciphertext retrieval, cloud computing, cloud servers, collusion attack, cryptography, data access, data privacy, data privacy security, data retrieval scheme, Encryption, file servers, fully homomorphic encryption scheme, homomorphic encryption, human factors, LSSS matrix, matrix algebra, Metrics, pubcrawl, Public key, query processing, query-response mechanism, Resiliency, Scalability, security analysis

Homomorphic encryption technology can settle a dispute of data privacy security in cloud environment, but there are many problems in the process of access the data which is encrypted by a homomorphic algorithm in the cloud. In this paper, on the premise of attribute encryption, we propose a fully homomorphic encrypt scheme which based on attribute encryption with LSSS matrix. This scheme supports fine-grained cum flexible access control along with "Query-Response" mechanism to enable users to efficiently retrieve desired data from cloud servers. In addition, the scheme should support considerable flexibility to revoke system privileges from users without updating the key client, it reduces the pressure of the client greatly. Finally, security analysis illustrates that the scheme can resist collusion attack. A comparison of the performance from existing CP-ABE scheme, indicates that our scheme reduces the computation cost greatly for users.

Citation Keyding_policy_2017