A compromised method by into the blockchain into the cloud storage accepted at provided in a private way, which cannot be seen as a true, is discovered. The cloud server and the data privacy of users are necessary to encrypt the data before outsourcing the cloud in order to realize secure keyword search over encrypted data. Additionally, it is believed that the cloud server would emphasize the value of keeping the data in a public chain right away

Login, Registration, Create Secret Key, Authentication Scheme, Two-Side Verification