Engineering Research Publication
In its most simple description, cloud computing is taking services ("Cloud services") and sending them to the customer outside an organization firewall on shared systems. Instead of their hard drive like pen drive applications and services are accessed via the internet. This paper shows how to securely, efficiently and flexibly store data with others in cloud storage, because securely storing data in cloud has become security concern. This can achieved using cryptography, it is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it.