Securing Multi-cloud Using Secret Sharing Algorithm

Cloud computing is an emerging technology which is at the peak in the IT industry. Storing, accessing and processing of data in cloud environment are the cutting edge technology used all over the world. Cloud computing provides several service models and deployment models. These features provide easy data outsourcing with the help of third party storage service providers. The storage provider must assure that the data stored by the user is secure, they can query on the data and the result of the query must also be secure and not visible to the provider. Data encryption, homomorphic encryption, secret sharing algorithms is the techniques extensively used for securing data outsourcing. Main issues associated with data storage management are CIA (Confidentiality, Integrity, and Availability). But due to the reason that single cloud suffers from many security issues, users and customers are opting for “multi-cloud” otherwise known as “cloud of clouds” or “interclouds”. These multi-clouds are secured by various techniques and one of them is Secret Sharing Algorithms. There are many different Secret Sharing Algorithms. This paper applies Shamir's secret sharing scheme to secure data outsourcing in Multi-cloud.