As described in [8], data gets produced, transferred and
stored at one or more remote storage servers; it becomes
vulnerable to unauthorized disclosures and modifications.
So data must be prevented from an unauthorized access.
Therefore, for the security issue we have used symmetric
cryptography. It provides the integrity as well as the
confidentiality of the data. Symmetric encryption techniques
[9] works with same key i.e. we will have the same key for
both encryption and decryption. Only those who know the
key are able to make the message readable. Thus, it is
important to make the key only available to those who
should have access to the message.