Cloud computing is an open structure which have complexity, on-demand services, virtualization, resource pooling, rapid elasticity and multi-tenant architecture, etc. The security issues have become a bottleneck restricting the development of cloud computing. This paper analyzes the characteristics of cloud computing services, security requirements and security issues, given security strategies and a cloud computing model. It requires the use of cloud computing architecture data centers, virtualization platforms, cloud services, cloud terminal interfaces and cloud terminal to establish a secure cloud computing model. It needs considerations from prevention, surveillance and response to ensure the implementation and management. Cloud computing security is not just technical issues, it also involves many standardization, regulatory approach, laws and regulations and follow the existing security best practices can enhance the security of cloud computing.
Cloud Computing Security Model with Combination of Data Encryption Standard Algorithm (DES) and Least Significant Bit (LSB)
