Secured Data Sharing in Groups Using Attribute-Based Broadcast Encryption in Hybrid Cloud

Abstract

Data sharing in the cloud has several benefits to the organization as well as the users. With the advent of cloud services, Google Docs provides data sharing, such that the users can share the documents and collaborate with the other users effectively. In this paper, we addressed the challenging security issues associated with the data sharing in the cloud. Broadcasting is an efficient way of sharing files securely to several receivers. In our proposed work, we proposed a solution based on Attribute-Based Broadcast Encryption, secure data sharing in groups using Attribute-Based Broadcast Encryption, which is both secure and efficient. The importance of data sharing and the necessity to ensure security and privacy is discussed with existing literature. Review of existing methods of achieving data sharing in the cloud is discussed. The primary difference between the proposed solution and traditional broadcast encryption is that security is achieved dynamically based on the parameters supplied during the encryption and decryption process. Our solution allows selecting and revoking the users based on the attributes. We propose three algorithms, namely, Secured Encryption using Group-Based Signature Generation (SEGB-SG), Secure Verification using Group-Based Signature Verification (SVGB-SV), and Revocation List based on Group Signature (RL-GS). The results for the proposed solution show a significant improvement in providing security for data sharing in the cloud. The experiments were conducted and the results are compared with the existing work on KP-ABE, and the proposed solution shows that our solution is both secure and efficient.