关键词: 云计算, 聚合签名, eCryptfs, 私有云, 文件加密系统

Abstract: At present, many enterprises have expressed interests in private clouds and have an optimistic attitude about the future prospects of private clouds. And more and more enterprises want to have their own private cloud computing center or the data center to optimize operation and save money. But there are many technical problems that need to be considered in the framework of the enterprise private cloud platform, such as protecting sensitive data, which has become the focus of the enterprise. In order to protect business sensitive data not to leak, this paper carries on a deep research to the main file encryption system and introduces the aggregate signature authentication into the private cloud. A secure private cloud encryption system combined with the overall architecture of the private cloud system is implemented. This system is run on the system environment of ubuntu10.04 of the enterprise private cloud file storage server. This solution achieves the security of storage resource by using eCryptfs file system non-interactively and solves the main security and efficiency problems that private cloud system face in large scale application environment.

Key words: cloud computing, aggregate signature, eCryptfs, private cloud, file encryption system