Cloud Computing is a new paradigm of distributed computing which provides data and other resources to users on demand over the network. Cloud applications offer reliability, utility, scalability and availability. A lot of cloud servers provide cloud services. The cloud provides a number of services like Software as a service (SaaS), Platform as a service (PaaS), and Infrastructure as a service (IaaS). Each service has their own associated security issue. With this comes a number of challenges in its implementation. This paper focuses on the major challenge on Security & Privacy related with Cloud Computing. The issues related to privacy have been addressed along with a proposal of a new implementation of cloud computing architecture. We have used segmentation technique to apply different encryption algorithms on different segments on the basis of odd even index values of segments.