Abstract: Cloud computing brings out a wide range of benefits including configurable computing resources, economic savings, and service flexibility. However, security concerns are shown to be the primary obstacles to a wide adoption of clouds. The new concepts that clouds introduce, such as multi-tenancy, resource sharing and outsourcing, create new challenges to the cloud data security. To address these challenges, it is necessary to tune the security measures developed for traditional computing systems and proposing a new security algorithms. In this paper a new cloud security algorithm is proposed by combining different cryptographic techniques in a hybrid manner.

Keywords: Cloud Computing, Cloud Computing Architecture, Data Security and issues in cloud computing, TERM.