摘要
为减少属性基加密算法占用的资源,在安全数据访问控制的属性基加密算法的基础上提出了一种改进的属性基外包加密算法。改进算法将加密算法中的复杂双线性对计算外包给雾节点以减少用户的计算开销;同时通过简化系统参数,减少属性中心为属性生成的随机因子以缩短密文和密钥长度,降低了用户和雾节点的存储和通信开销。同时对提出的改进算法进行了安全性证明,证明了该改进算法是安全的。
In order to reduce the resources occupied by the attribute-based encryption algorithm,this paper introduced an improved attribute-based outsourced encryption algorithm based on secure data access control attribute-based encryption.It outsourced the complex bilinear pairings in the encryption computing to the fog node to reduce the user’s computation overhead.By simplifying the system parameters,it reduced the random number generated by attribute authority for every attribute to shorten the length of ciphertext and the key,as well as the storage cost of the system.And it gave the security proof of the scheme.
作者
曾萍
钱进
穆成新
高原
胡荣磊
Zeng Ping;Qian Jin;Mu Chengxin;Gao Yuan;Hu Ronglei(Beijing Electronics Science&Technology Institute,Beijing 100000,China;School of Telecommunications Engineering,Xidian University,Xi'an 710000,China;Dept.of Theoretical Training,People’s Liberation Army Air Force Harbin Flight Academy,Harbin 150001,China)
出处
《计算机应用研究》
CSCD
北大核心
2020年第2期498-500,504,共4页
Application Research of Computers
基金
国家自然科学基金青年基金资助项目(61201159)
国家自然科学基金面上项目(61772047).
关键词
属性基加密
加密外包
雾计算
安全性证明
门限分割
attribute-based encryption
outsourcing encryption
fog computing
security analysis
threshold segmentation
