A novel archival system with dynamically balanced security, reliability and availability
A. H. Shanthakumara, N. R. Sunitha · 2016
This paper presents a design of an efficient archival system which dynamically balances three crucial features such as security, reliability and availability. Research in archival system has focused very little on dynamic data replication to serve availability, but has instead been directed more at improving system availability through static replications. We propose an archival system, which automatically avoids unnecessary replicas and also places them to a read intensive node dynamically, instead of previously defined static locations. Traditionally, same security mechanism is used to secure all archival data objects. Our designed archival system applies different security levels for different data objects depending on their sensitivity and also varies the security level accordingly as sensitivity of the data objects varies from time to time. We have reduced the operational load by using light weight cryptographic algorithm and there is a tremendous change in the speed of data object retrieval. We have designed a periodical re-encryption mechanism to highly sensitive data objects which provides security against slow attack. Research in the recent past has comparatively focused very little on using survivability of a node to distribute the right information but has instead been directed more to estimate the life time of the data being stored. We have designed a system which dynamically places the right information in the right node.