Enhanced Convergent Encryption Key Generation for Secured Data Deduplication in Cloud Storage
G. V. Uma, L. Jayasimman · Journal of Physics Conference Series · 2018
Data deduplication is broadlyfor maintaining asole copy of user's data in cloud storage servers. Data Deduplication is a process of verify that whether the data are already stored in the cloud storage or not and maintain a single copy of data in the cloud. Deduplication is possible in cloud only with the use of convergent encryption (CE) technique. This technique is used to generate convergent encryption key from the user data which is to be uploaded to the cloud and the user's data are encrypted with this convergent encryption key. This CE is exposed to different cryptography attacks. To maintain secure deduplication with convergent encryption in cloud, this paper proposes enhanced convergent encryption key generation technique. The paper introduces scheme with Key Generation and Management as a Service (KGMaaS) mechanism for generating and maintaining key for convergent encryption and deduplication process. Generation of convergent encryption key takes place in user's side. In this process, a key is used for generating the convergent encryption key unlike existing method. Key used to generate convergent encryption key is received from KGMaaS. KGMaaS is assumed to be a trusted party for key generation and sharing. The proposed technique is analyst for security vulnerability, and it is ensure the security and efficient deduplication by procedure used in the overall data deduplication process.