QR Code based public cloud data protection: A review

Encryptions and Decryptions are done using the public key and private key. These both keys are not stored on the client side or server side but only in the users devices like mobile, tablet in the form of Quick Response (QR) codes. This quick response codes can be used to Decrypt the users information and data. The Cloud computing standard as a new computing model which aim to provide reliable, Custom and quality of service certification in dynamic computing for the end users. Cloud computing enables customers with limited computational resources to out resource with their Big computational workload to the cloud, and storage, bandwidth power and even relevant software that can be shared in pay- per –use way. In this paper we must design a mechanism for protect information or data by using the encryption and decryption technique. And also protect the customers data and information from malicious Attacks or Behaviors.