中文摘要：

针对数据安全分片存储系统使用了数据分片存储和数据分片加密技术.数据采用分片存储策略,存储于文件系统的不同节点,以提高数据传输的效率并提升数据的安全性.分片存储策略建立在分片可用率模型上,通过分析模型中M、P和R三个因子对文件可用率的影响,设计了具体存储方案.为了保障数据的安全,结合文件分片存储的特点,对数据进行了分片加密,设计了密钥安全生成方法.通过实验对模型性能进行测试与分析.

英文摘要：

Security file-slice storage system uses file-slice storage and file-slice encryption techniques. File data adopts slice storage strategy, stores in different nodes of file system in order to enhance data transmission efficiency and data security. Slice storage strategy is based on patch availability model, and concrete storage strategy is designed by analysing the effect of three factors M, P and R of model on file availability, and the storage scheme is designed. With the purpose of ensuring file data security, data-slice encryption scheme is adopted according to the features of file-slice storage, and the generation of secret key is designed. Moreover, the performance of the presented model is analyzed through experiments.