An Efficient Role-based Access Control on Encrypted Data in Cloud

Cloud Computing is a virtualized compute power and storage delivered via platform-agnostic infrastructures of abstracted hardware and software accessed over the Internet. Cloud Computing involves delivering hosted services over the internet. These services are broadly categorized into three types, Infrastructure-as-a –Service (IaaS), Platform-as-a-Service(PaaS) and Software-as-a-Service(SaaS). It is a shared pool of resources, multiple users can share their information via cloud, and security is the main issue for use and shares their data. In this proposed work, an Efficient Role Based Access Control technique uses a public key cryptosystem is considered. First phase involves a user Identity Registration and Identity Token issuance and Role Based Key Generation for all the users assigned to a roles in a system. Second phase involves Data Encryption, along with roles and TokenID for that file, data are encrypting with appropriate role public keys. Third phase involves a Data Decryption, in which role based on their access policies can decrypt the data, and it is done by using their private key. This proposed work deployed in Cloud-Stack private cloud (IaaS). The entire system will enhance the confidentiality and authentication for the cloud users.