前向安全的密文策略基于属性加密方案
发布时间：2019-06-14 08:52
【摘要】：为降低密文策略基于属性加密(CP-ABE,ciphertext-policy attribute-based encryption)体制中私钥泄漏带来的损害,首先给出了前向安全CP-ABE体制的形式化定义和安全模型,然后构造了一个前向安全的CP-ABE方案。基于判定性l-BDHE假设,给出了所提方案在标准模型下的安全性证明。从效率和安全性2个方面讨论了所提方案的性能,表明所提方案在增强CP-ABE体制安全性的同时,并没有过多地增加计算开销和存储开销,更适合在实际中应用。
[Abstract]:In order to reduce the damage caused by private key leakage in ciphertext strategy based on attribute encryption (CP-ABE,ciphertext-policy attribute-based encryption) scheme, the formal definition and security model of forward secure CP-ABE scheme are given, and then a forward secure CP-ABE scheme is constructed. Based on the deterministic l-BDHE hypothesis, the security proof of the proposed scheme under the standard model is given. The performance of the proposed scheme is discussed from two aspects of efficiency and security. It is shown that the proposed scheme not only enhances the security of CP-ABE system, but also does not increase the computing overhead and storage overhead too much, so it is more suitable for practical application.
【作者单位】： 解放军信息工程大学数学工程与先进计算国家重点实验室;
【基金】：国家重点基础研究发展计划(“973”计划)基金资助项目(2012CB315905,2012CB315901) 中国博士后基金资助项目(2014M552524)~~
【分类号】：TN918.4
[Abstract]:In order to reduce the damage caused by private key leakage in ciphertext strategy based on attribute encryption (CP-ABE,ciphertext-policy attribute-based encryption) scheme, the formal definition and security model of forward secure CP-ABE scheme are given, and then a forward secure CP-ABE scheme is constructed. Based on the deterministic l-BDHE hypothesis, the security proof of the proposed scheme under the standard model is given. The performance of the proposed scheme is discussed from two aspects of efficiency and security. It is shown that the proposed scheme not only enhances the security of CP-ABE system, but also does not increase the computing overhead and storage overhead too much, so it is more suitable for practical application.
【作者单位】： 解放军信息工程大学数学工程与先进计算国家重点实验室;
【基金】：国家重点基础研究发展计划(“973”计划)基金资助项目(2012CB315905,2012CB315901) 中国博士后基金资助项目(2014M552524)~~
【分类号】：TN918.4
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