Authorization Scheme for Secure Data Retrieval Using Lls-haval With Gkld-ecc in the Cloud

Abstract

Abstract The cloud platform is the best choice to provide more space for storing and transmitting data from one location to another in a fast manner for internet users. Nevertheless, while using cloud storage, several risks like data leakage and external attacks arise, especially owing to unauthorized users. Thus, to tackle these problems, this paper proposes Cued Click Points (CCPs) of the fused image with Galois KullbackLeibler Divergence-Elliptic Curve Cryptography(GKLD-ECC) and Log Left Shift-Hash of Variable Length(LLS-HAVAL) for secure data uploading along with retrieval in the cloud. Firstly, the users register their details in the database with the multiple CCPs on the fused image. During registration, the user should login with the provided details for uploading or retrieving data. Next, by employing GKLD-ECC in the cloud, Data Owners (DOs) securely upload data. Afterward, hashed access policy with LSS-HAVAL hash is created based on the features and attributes selected by the Interpolated-Sun Flower Optimization Algorithm (I-SFOA) to enhance the authorization process; also, the hashcode is shared with selected data users. The data can be retrieved successfully if the hashcode gets matched during retrieval. The performance of the proposed framework is verified by achieving a higher security level and lesser time.