A Practical Privacy-preserving Password Authentication Scheme for Cloud Computing

An era of cloud computing allows users to profit from many privileges. However, there are several new security challenges. In fact, anonymous password authentication in the traditional setting has been suffered from many inherent drawbacks such as ease of exposure to malicious attacks and users registered their passwords in the server. Our scheme proposes the phenomenal context according to three main components: data owner, users, and service provider in cloud where users do not need to register their passwords in the service provider. Moreover, the data owner is contributed to make secure decisions; so that he manages the significant keys to other components distributedly. The proposal enjoys several advantages such as preserving privacy of password, unlinkability and secrecy of session key. We have given a mechanism to prove the identity of the users authenticated without a need to reveal their passwords. Our approach has been achieved good results of reliability, and validity for cloud password authentication. The experimental results show an effective level of performance.