'SMART CARD BASED FOUR ENTITY CLOUD COMPUTING AUTHENTICATION SYSTEM AND METHOD THERE OFF'

摘要

This invention relates to a four entity cloud computing authentication system and in particular, this invention relates to thefour entity cloud computing authentication system based on smart card. More particularly, this present invention also relates to thefour entity cloud computing authentication system having four different phases, consisting of user enrollment phase, user authentication Phase, network authentication phase and user password change Phase. Furthermore, this invention also relates to a four entity cloud computing authentication system in which a cloud computing service can provide a consistent user authentication experience and a relatively high authentication security level and effectively ensures the privacy security of the user when being used by the user.