International Journal of Engineering and Advanced Technology (IJEAT)
Now-a-days, cloud computing considers an important topic for small, medium and large e-commences alike. The security is a constitutive trouble that hinders its widespread adoption. The password authentication is a first level of security in cloud computing, aiming to guarantee that only legitimate users are allowed to be used data that stored in the cloud server. The demeanor of multi-factor authentication schemes such as token, biometric provided a promising password authentication solution. There are many challenging matters that raise fears of using multi-factor are the high cost, not easy to carry, does not provide the functionalities of revocation, and fails to resist well-known attacks such as off-line guessing password, Man-In-The-Middle (MITM) seed-tracing.