A User Authentication Scheme Based on Trusted Platform for Cloud Computing

摘要

Cloud Computing develops rapidly and has been widely used in recent years. Remote user security authentication plays an important role in Cloud Computing security mechanism. Some of remote authentication protocols have high computational cost, and they have much interaction rounds, the credibility of remote user's platform could not be guaranteed. In this paper, we put forward a user identity authentication scheme based on trusted platform for Cloud Computing. In this scheme, the cloud user registers in the trusted certificate authority (CA), and obtains the certificate issued by CA. Afterwards, the certificate is sent to the cloud server, and the cloud server verifies the validity of the remote user identity according to the certificate. At the same time, this scheme provides mutual authentication while it establishes communication key between the remote user and cloud server. The analysis shows that this scheme is secure against insider attack, replay attack, backward/forward attack, and forgery attack. Compared with the related work, the scheme has higher computing efficiency and less interaction rounds.