Inter-cloud data security for secure cloud-based business collaborations

With the advent of cloud computing, the boundary separating internal and external data has become increasingly blurred due to the utilization of external services. As a result, existing methods of preventing data leakage, such as only using a gateway to block the outflow of confidential data, have become insufficient. Therefore, there is increased demand for new security technology to allow confidential data to be safely used even in the cloud. We have developed new cloud information gateway and access gateway technologies that can mask confidential information contained within data before it is processed in the cloud. They can also transfer applications from the cloud to inside the company for internal processing. In this way, they make it possible to utilize cloud services without transmitting actual data. These technologies enable users to safely utilize confidential data in the cloud, encouraging new uses of cloud computing, such as cross-industry collaborations and specialized uses in specific industries. This paper outlines information gateway and access gateway and describes their applications.