计算机应用研究2018，Vol.35Issue(3)：905-910,6.DOI:10.3969/j.issn.1001-3695.2018.03.056
云环境中基于信任分散策略的数据共享方案
Data sharing scheme based on trust decentralization in cloud environment
摘要
Abstract
According to the security problem of data sharing in the environment of incomplete credible cloud,this paper proposed a data sharing scheme based on the decentralization strategy of credit.This scheme divided the original data into dynamic and static data.The dynamic data's encryption used ciphertext-policy attribute-based encryption algorithm that added the personal identification in the user's private key,and then a cloud stored it.At the same time,this scheme used the proxy reencryption technology to change the access structure when the user revoked.The static data's encryption used a symmetric encryption algorithm,and another cloud stored it.The security analysis and experiments show that the proposed scheme can effectively prevent the collusion attack of dynamic data and guarantee the backward security of users,which can meet the requirement of data security sharing in the real cloud environment.关键词
数据共享/信任分散/云环境/属性加密/代理重加密Key words
data sharing/trust decentralization/cloud environment/attribute encryption/proxy re-encryption分类
信息技术与安全科学引用本文复制引用
张光华,刘会梦,陈振国,许向阳..云环境中基于信任分散策略的数据共享方案[J].计算机应用研究,2018,35(3):905-910,6.基金项目
国家自然科学基金资助项目(61572255) （61572255）
中国博士后科学基金资助项目(2015M582622) （2015M582622）
物联网信息安全技术北京市重点实验室开放课题(J6V0011104) （J6V0011104）
河北省科技计划支撑项目(15210338) （15210338）
