Identity-based cloud authentication protocol

Cloud computing is a recently developed new technology for complex systems with massivescale services sharing among many users. One of the most important security objectives is to achieve secure user authentication. If it is breached, confidentiality and integrity of the data may be compromised. We propose an identity-based mutual authentication protocol, where identity verification is carried out by multiple servers applying secret sharing technology on the cloud provider side. Robustness and elasticity of the cloud are ensured by its hierarchical structure