目前，云计算应用日益普及，其中云存储是使用比较广泛的云应用之一，它的便利性毋庸置疑，已经成为数据存储的一种趋势。但是，其安全问题也日益突出，本文在对云存储系统结构进行介绍的同时，重点分析了与云存储系统安全性相关的重要技术，主要包括数据加密、身份认证和访问控制等。经过深入分析，提出使用混合加密算法、挑战-应答身份验证、Kerberos身份验证、基于角色的访问控制等安全技术可以有效提高云存储系统的安全性。%Currently,with the rapid growth of the cloud computing applications,the cloud storage is one of more widely cloud applications. As the tendency of data storages,the convenience of cloud storage is no doubt. However,the secu-rity issue of cloud storage is increasingly prominent. In this paper,the structure of the cloud storage is introduced,and the technology related to the security of the cloud storage system is analyzed on focus. The technologies mainly include data encryption, authentication and access control, etc. Hybrid encryption algorithm, challenge-response authentication, Kerberos authentication and role based access control technology can effectively improve the security of cloud storage system.
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