基于格的属性签密方案  

Attribute-based signcryption scheme for lattice

作　　者：汤海婷 汪学明[1] TANG Hai-ting;WANG Xue-ming(College of Computer Science and Technology,Guizhou University,Guyang 550025,China)

机构地区：[1]贵州大学计算机科学与技术学院,贵州贵阳550025

出　　处：《计算机工程与设计》2018年第10期3034-3038,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目([2011]61163049);贵州省自然科学基金项目(黔科合J字[2014]7641)

摘　　要：为提高密码体制中签密的运算效率和安全性,减少传统属性签密的双线性对的运算量,利用格理论构建基于格的属性签密方案,提高计算效率的同时,抵抗量子攻击。为验证该方案的安全性,在随机预言机模型下,利用格理论中带错误学习困难问题和小整数解困难问题分别分析该方案需要满足的安全性要求。分析结果表明,该方案是可行的且具有高安全性。To improve the operating efficiency and security of cryptosystem and reduce the computational complexity of bilinear pairings of traditional attribute-based signcryption,an attribute-based signcryption scheme for lattice was proposed.The computation efficiency was improved,and quantum attacks were resisted.To verify the security of the proposed scheme,under the random oracle model,the security requirements of the scheme were analyzed using the learning with errors problem and small integer solution problem.The feasibility and high security of the proposed scheme were demonstrated.

关 键 词：属性签密 抗量子 格 LWE问题 SIS问题 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]