Data Security in Cloud for Health Care Applications

With the proliferation of data in medical field and health care systems towards cloud, maintaining the huge volume of sensitive data becomes mandatory. This paper describes into the benefit of cloud computing for healthcare organizations and examines the availability and security considerations that healthcare data requires. The proposed model strengthens the availability and security of data using metadata. The metadata created based on DCMI standards provides easy access of data by locating the server and secure the data resting in the cloud. In this paper security is enforced by cipher key which is generated from the attributes of metadata by providing two novel features. 1. Security is provided, where the encryption and decryption keys cannot be compromised without the involvement of data owner and health care organization, hence makes the data secured 2. The cipher key generated using modified feistel network increases the complexity of the key which strengthens the security effect.