Abstract

The cloud services are openly available for all kinds of the organizations to store and access their data\nfrom the cloud using their mobile devices. Mobile cloud security has become a major concern for most of the\norganizations to store and access their sensitive or critical data from the cloud. In the cloud, data is stored in a\ncentralized manner, where malicious users can easily access the information and modify the data. So far to provide data\nconfidentiality among number of users or tenants, we classify the data into various levels of security and apply our\nproposed algorithm by means of upgrading the key size based on the levels chosen.