Encryption as a service for data healthcare cloud security

Data security continues to be one of the top concerns for cloud computing, an issue that's been intensified by recent high-profile attacks in healthcare. The encryption solution have to be quick and easy to provision and provides high levels of protec- tion without sacrificing network performance. It's another way to provide a critical layer of security to protect the customers. In this work, we are interested in data encryption in healthcare cloud. We propose a hybrid architecture based on Cryptography as a Service (CaaS) included the private cloud OpenStack platform. This architecture authorizes the cloud clients to be in control of their cryptographic operations and keys that they deploy in the cloud independently of the cloud provider. Firstly, we explore healthcare cloud environment and then we analyze some encryption algorithms. Secondly, we design and implement two cryptography algorithms (homomorphic encryption and RSA) in our proposed architecture for providing security to information based on OpenStack platform.