一种基于密文策略属性加密技术的云安全存储方案

A Security Cloud Storage Scheme Based on Cipertext Policy Attribute-based Encryption

针对云存储数据共享特性安全问题,提出了一种基于可信第三方密文策略属性加密技术的云存储共享方案.利用可信第三方有效地解决了用户端负载量过大、密钥分发与管理负担等问题.采用密文控制访问技术,保证了数据在不完全可信云环境下的安全性.分析结果表明能保证数据安全性,而且有效地减少了用户端的工作量,符合云存储的发展趋势.

Regarding the security problem with cloud storage,it proposed a security cloud storage scheme,based on cipertext policy attribute-based encryption. A trusted third party was introduced between the terminal and the cloud server in order to solve the problems of large load,heavy burden of key distribution and management. It ensured the data security of the cloud storage system in an incomplete security environment. The results show that it can keep the data security and reduce the load on the terminal,which is in accordance with the developing trend of cloud storage service.