Key Policy-Attribute Based Fully Homomorphic Encryption (KP-ABFHE) Scheme for Securing Cloud Application in Multi-users Environment

• Main Authors: Tan Soo Fun, Azman Samsudin
• Format: Article
• Language: English; English
• Published: 2016
• Online Access: https://eprints.ums.edu.my/id/eprint/22210/1/Key%20Policy-Attribute%20Based%20Fully%20Homomorphic%20Encryption%20%28KP-ABFHE%29%20Scheme%20for%20Securing%20Cloud%20Application%20in%20Multi-users%20Environment.pdf; https://eprints.ums.edu.my/id/eprint/22210/7/Key%20Policy-Attribute%20Based%20Fully.pdf; https://eprints.ums.edu.my/id/eprint/22210/

Recently, cloud technologies has become a cost-effective data solution among the small and medium-sized enterprises (SMEs). However, there is a raising concern on its security. This paper proposed the Key Policy-Attribute Based Fully Homomorphic Encryption (KP-ABFHE) scheme for providing an end-to end data protection in multi-users cloud environments. The proposed KP-ABFHE scheme is able to perform the computation while providing fine-grained access on the encrypted data. The proposed scheme is able to handle a monotonic access structure over a set of authorized attributes, without sacrificing the computation capabilities of homomorphic encryption. In addition, this paper proves that the proposed scheme is secure under a selective-set model with the hardness of Decision Ring-LWE\({_{d,q, \chi } }\) problem.