代理重加密技术在云计算中的应用

云计算中的数据机密性风险极大地阻碍了云计算的应用,而在用户端加密的模式对于数据共享来说非常不便,用户频繁的获取和释放授权将使得用户端数据加解密工作繁重。代理重加密技术在云端进行数据的密文转换,减轻了用户端的负担,同时加强了云端数据的保密性。文中研究了云计算中代理重加密的应用模式,并简要描述了在云计算中使用代理重加密实现数据共享、授权管理、访问控制等安全机制的方法,能够提高云计算的安全性。

Application of Proxy Re-encryption in Cloud Computing

The data protection risks in cloud computing severely hinders the application of cloud computing greatly,while the encryption mode by the client is quite inconvenient to the data sharing,and the frequent acquisition and release of authorization make the client＇ s encryption work more heavy. The proxy re-encryption transforms cipher text in the cloud,thus reducing the burden of the client and increasing the security of the data in the cloud. This paper discusses the application mode of proxy re-encryption in cloud computing,and describes how to use the proxy re-encryption for realizing data sharing,authorization management and access control in cloud computing. And these would improve the cloud computing security.