基于云存储的无可信中心的属性密钥分发算法

Cloud Storage Based Attribute Key Distribution Algorithm without Trusted Center

随着现代通信技术的发展,云计算越来越受到人们的青睐,并且已经发展成为一项成熟的应用技术,得到了极大推广,云存储作为云环境下的应用也应运而生。云存储的主要目的是为用户共享空间资源,但是数据的安全共享如何保证,是云存储面临的一个主要问题。由于现有的密钥技术为云存储的数据共享提供有效访问控制的同时,也带来了共享数据服务提供商和密钥管理方的信任问题。针对以上问题,提出了无可信中心的属性密钥算法。对其进行的安全及性能分析表明,该算法不仅解决了云存储的信任依赖问题,而且在属性密钥分发过程中完成了用户的身份认证。

With the development of modern communication technology,cloud computing has developed into a mature application technology which is greatly promoted,and cloud storage as an application in cloud environment is also emerging. Cloud storage is intended to provide shared space resources for users,while how to ensure the safety of data sharing is a major challenge for cloud storage.The existing key techniques provide efficient access control for data sharing of cloud storage,while at the same time,they also bring trust problems of data sharing service providers and key managers.To address the above issues,an attribute key algorithm without a trusted center is proposed.Security and performance analysis shows that the algorithm not only solves the trust reliance problem of cloud storage,but also accomplishes user identity authentication in the process of attribute key distribution.