Combined security framework for multi-cloud environment

Cloud computing is a field which has been rapidly developing over the past few years. The fact that cloud can offer both storage and computation at low rates makes it popular among corporations and IT industries. This also makes it a very attractive proposition for the future. But in spite of its promise and potential, security in the cloud proves to be a cause for concern to the business sector. This is due to the outsourcing of data onto third party managed cloud platform. These security concerns also make the use of cloud services less flexible. In this paper, we provide a secure framework that allows data to be stored securely in the cloud while at the same time allowing operations to be performed on it without any compromise of the sensitive parts of the data. A combination of searchable encryption with Partial Homomorphism is proposed. The strengths and practicality of the suggested solution have been tested experimentally and results are discussed.