Wei-Fu Hsien

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Cloud computing has been popular as the IT architecture. Cloud service providers offer many services based on cloud computing. Cloud storage service is the cloud services which can provide a huge storage space to solve the bottleneck of the storage space of local end users. However, cloud storage service may have data security because the users' data is not(More)
Cloud computing technology has matured, so cloud computing produces a wide range of cloud service. Cloud storage services are one of cloud services where cloud service provider can provide storage space to customers. Because cloud storage services bring a lot of convenience, many enterprises and users store the data to the cloud storage. However, the user(More)
In the letter, we propose an improved model, which is built on AdjointVM. Our model can improve the situation where attackers can successfully intrude two adjacent virtual machines. Because of this situation, it will lead to the collapse of the entire cloud services. This model uses a double circular chain concept, which can be a virtual machine capable of(More)
Cloud storage service is one of cloud services where cloud service provider can provide storage space to customers. Because cloud storage service has many advantages which include convenience, high computation and capacity, it attracts the user to outsource data in the cloud. However , the user outsources data directly in cloud storage service that is(More)
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