具有固定密文长度的多授权属性基密钥协商协议  

Key agreement protocol with constant ciphertext length based on multi-authority attribute-based encryption

作　　者：胡声洲[1] 刘志勇 何华[2] 王幸福 章银娥[1] Hu Shengzhou;Liu Zhiyong;He Hua;Wang Xingfu;Zhang Yin’e(Gannan Normal University,Ganzhou Jiangxi 341000,China;First Affiliated Hospital of Gannan Medical University,Ganzhou Jiangxi 341000,China)

机构地区：[1]赣南师范大学,江西赣州341000 [2]赣南医学院第一附属医院,江西赣州341000

出　　处：《计算机应用研究》2021年第2期567-571,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(61562003,31660321);江西省科技厅重点研发计划项目(20171BBE50065);江西省教育厅科技项目(GJJ170817,GJJ201402,GJJ160961)。

摘　　要：为适应云环境中移动手机等资源限制型设备的使用,降低基于多授权属性基加密的会话密钥协议的计算和通信代价,提出一种能生成固定密文长度交换消息的协议。该协议基于多值访问结构,加强了数据拥有者对系统模型的权限控制;在基于属性的BJM(Blake-Johnson-Menezes)模型和选择访问结构安全模型下,基于判定性q并行双线性Diffie-Hellman指数(q-PBDHE)假设证明了该协议的安全性。通过实验比较分析了类似协议的性能,表明该协议具有较高效率和安全性,适合在轻量级应用场景上使用。In order to adapt to the use of resource-limited devices such as mobile phones in the cloud environment and reduce the computation and communication cost of the session key protocol based on multi-authority attribute-based encryption,this paper proposed a protocol that generated exchange messages with ciphertexts of constant length.This protocol visited data on the basis of the multi-value access structure,which strengthened the controlling abilities of the data owners over the system.Under attribute-based Blake-Johnson-Menezes(BJM)model and selective access structure security model,the protocol made security proving based on q parallel Diffie-Hellman exponent(q-PBDHE)hypothesis.The experimental results show that the proposed protocol has lower computational and communication costs and is suitable for the application of resource-constrained devices.

关 键 词：固定密文长度 多授权 属性基加密 密钥协商协议 多值访问结构 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]