| 面向云存储的高效动态密文访问控制方法 |
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| 引用本文： | 洪 澄,张 敏,冯登国.面向云存储的高效动态密文访问控制方法[J].通信学报,2011,32(7):125-132. |
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| 作者姓名： | 洪 澄 张 敏 冯登国 |
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| 作者单位： | 中国科学院软件研究所信息安全国家重点实验室,北京,100190 |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)基金资助项目(2007AA120404)~~ |
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| 摘 要： | 针对云存储中敏感数据的机密性保护问题,在基于属性的加密基础上提出了一种密文访问控制方法HCRE。其思想是设计一种基于秘密共享方案的算法,将访问控制策略变更导致的重加密过程转移到云端执行,从而降低权限管理的复杂度,实现高效的动态密文访问控制。实验分析表明HCRE显著降低了权限管理的时间代价,而且没有向云端泄露额外的信息,保持了数据机密性。
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| 关 键 词： | 云存储 云计算 密文访问控制 基于属性的加密 代理重加密 |
Achieving efficient dynamic cryptographic access control in cloud storage |
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| HONG Cheng,ZHANG Min,FENG Deng-guo.Achieving efficient dynamic cryptographic access control in cloud storage[J].Journal on Communications,2011,32(7):125-132. |
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| Authors: | HONG Cheng ZHANG Min FENG Deng-guo |
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| Institution: | HONG Cheng,ZHANG Min,FENG Deng-guo(State Key Laboratory of Information Security,Institute of Software,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | To keep the data in the cloud confidential against unauthorized parties,a cryptographic access control solution called hybrid cloud re-encryption(HCRE) based on attribute-based encryption(ABE) was introduced.HCRE designed a secret sharing scheme to delegate the task of ABE re-encryption to the cloud service provider(CSP),which alleviates the administering burdens on the data owner.Experiments show that HCRE can handle dynamic access policies in a more ef-ficient way.Additionally,HCRE does not reveal extra i... |
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| Keywords: | cloud storage cloud computing cryptographic access control attributes-based encryption proxy re-encryption |
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