International Association of Computer Science & Information Technology (IACSIT)
Cloud storage is a model of networked online storage based on cloud computing, and provides users with immediate access to a broad range of resources and applications. Although a lot of cloud storage providers adopt encryption to protect costumer data, but users still suspect the security and privacy of their data. The paper analyzed Information Dispersal Algorithms (IDAs), and proved that it can better address the issues of confidentiality, integrity and availability of data. On this basis, the paper presented a cloud storage system adopting IDAs, and illustrated its key component and the process of writing file in cloud storage.