摘要
针对云服务提供商的可信状态和云环境数据服务的安全需求,提出了云环境数据服务的可信重加密安全模型,即在云环境下的数据安全需要云服务提供商满足一定的可信程度,再结合有效的重加密算法才能得以保证。通过对重加密模型进行安全分析,并用密码算法对重加密模型进行验证,得到实现重加密算法的约束条件,同时提出可信评价模型,对云服务提供商的可信状态进行动态评价,为建立云环境数据服务的可信安全提供理论基础和实现依据。
For trusted status of cloud service provider （CSP） and security requirements for data services in cloud com-puting, the trusted re-encryption secure model （TRSM） for cloud data services was proposed. Only with a certain trusteddegree in CSP, cloud data security can be ensured by taking effective re-encryption schemes. The re-encryption securemodel is verified by the classical cryptographic algorithms and analyzed by random oracles. Thus, the basic requirementsof realizing re-encryption algorithm are got. Moreover, trusted evaluation model is proposed and used to dynamicallyevaluate CSP＇s trusted status, provides theoretical basis and realization for establishment of trusted secure data services incloud computing.
出处
《通信学报》
EI
CSCD
北大核心
2014年第10期127-137,144,共12页
Journal on Communications
基金
国家重点基础研究发展计划("973"计划)基金资助项目(2011CB302306
2011CB302204)
国家自然科学基金资助项目(41371402
41101416)
国家教育部博士点基金资助项目(20110141110056)~~
关键词
云数据服务
重加密
数据安全
可信模型
cloud data services
re-encryption scheme
data security
trusted model
