  In our proposed work we mainly focus on data security of tenants so that only
the authorized user can access the data. To provide this feature we use
encryption and decryption process of data so that the only legal tenant can
access their particular data. Hence, for security related to data of tenants we
implement AES (advanced encryption standard) using cloud SQL. The result
obtained from experimental methodology proved that AES gives protection for the
data stored in the cloud. We make use of AES algorithm and Google App Engine to
supply secured data storage, efficiency, assure availability in the condition
of cloud denial-of-service attacks and data security in the cloud. This
Approach is basically implemented by tenants who are going to store their data
in the cloud.
