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解密成本为常数的具有追踪性的密文策略属性加密方案

王建华 王光波 徐旸 胡一笑 张越 樊理文

王建华, 王光波, 徐旸, 胡一笑, 张越, 樊理文. 解密成本为常数的具有追踪性的密文策略属性加密方案[J]. 电子与信息学报, 2018, 40(4): 802-810. doi: 10.11999/JEIT170198
引用本文: 王建华, 王光波, 徐旸, 胡一笑, 张越, 樊理文. 解密成本为常数的具有追踪性的密文策略属性加密方案[J]. 电子与信息学报, 2018, 40(4): 802-810. doi: 10.11999/JEIT170198
WANG Jianhua, WANG Guangbo, XU Yang, HU Yixiao, ZHANG Yue, FAN Liwen. Traceable Ciphertext-policy Attribute-based Encryption Scheme with Constant Decryption Costs[J]. Journal of Electronics and Information Technology, 2018, 40(4): 802-810. doi: 10.11999/JEIT170198
Citation: WANG Jianhua, WANG Guangbo, XU Yang, HU Yixiao, ZHANG Yue, FAN Liwen. Traceable Ciphertext-policy Attribute-based Encryption Scheme with Constant Decryption Costs[J]. Journal of Electronics and Information Technology, 2018, 40(4): 802-810. doi: 10.11999/JEIT170198

解密成本为常数的具有追踪性的密文策略属性加密方案

doi: 10.11999/JEIT170198
基金项目: 

国家973计划项目(2013CB338001)

Traceable Ciphertext-policy Attribute-based Encryption Scheme with Constant Decryption Costs

Funds: 

The National 973 Program of China (2013CB 338001)

  • 摘要: 该文针对单调访问结构提出了一个解密成本为常数的具有追踪性的密文策略属性加密(CP-ABE)方案,该方案基于合数阶双线性群实现了标准模型下的适应安全性。在所有已知的追踪性CP-ABE方案中,都使用线性秘密共享方案(LSSS)来表示单调访问结构,并用LSSS矩阵加密明文数据。因此,其加密成本都随着LSSS矩阵的大小成线性增长,同时解密成本则随着满足要求的属性数量成线性增长。而在该文提出的追踪性CP-ABE方案中,使用最小授权子集集合来表示单调访问结构,并用该子集集合加密明文数据。因此,其加密成本随着最小授权子集的集合大小成线性增长,对于某些单调访问结构,该文方案具有更短的密文长度和更小的加密成本。最重要的是,该文方案进行解密时,只需要3个双线性对操作和2个指数操作,解密成本为常数,实现了更快更高效的数据解密。最后基于合数阶双线性群下的3个静态假设对方案进行了安全性证明,并进行了性能分析与实验验证。
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出版历程
  • 收稿日期:  2017-03-06
  • 修回日期:  2018-01-10
  • 刊出日期:  2018-04-19

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