一个无双线性对的无证书签密方案的安全性分析及改进  

Attacks And Improvements on a Certicateless Signcryption Scheme Without Bilinear Pairing

作　　者：张金辉[1,3] 梁红梅 李慧敏 王海民[1,3] ZHANG Jin-hui;LIANG Hong-mei;Li Huimin;WANG Hai-min(Key Laboratory of Financial Mathematics(Putian University),Fujian Province University,Putian 351100,China;School of Computer Sciences,Minnan Normal University,Zhangzhou 363000,China;School of Mathematics and Finance,Putian University,Putian 351100,China)

机构地区：[1]应用数学福建省高校重点实验室(莆田学院),福建莆田351100 [2]闽南师范大学数学与统计学院,福建漳州363000 [3]莆田学院数学与金融学院,福建莆田351100

出　　处：《数学的实践与认识》2020年第13期99-104,共6页Mathematics in Practice and Theory

基　　金：国家自然科学基金(61373140,61170246);福建省自然科学基金项目(2015J01662);福建省教育厅中青年教师教育科研项目(JT180487);莆田学院校内项目(2016096)。

摘　　要：对周等人发表在"计算机科学"上的一个改进的无双线性对的无证书签密方案进行了安全性分析,指出了该签密方案至少能受到两种攻击,给出了具体的攻击方法并分析了存在这种攻击的根本原因.最后,给出了克服这种攻击的改进方法.给出的攻击和改进方法对于同类签密方案的设计具有借鉴意义.The security of an improved certificateless signcryption scheme without bilinear pairs which proposed by Zhou et al.and published in "computer science" is analyzed.This paper points out that the signcryption scheme can be subjected to at least two kinds of attacks,gives the concrete attack methods,and analyses the primary causes of such attacks.Finally,an improved signcryption scheme is also presented to conquer these attacks.The attack and improvement methods given in this paper can be of referential significance to the design of similar signcryption schemes.

关 键 词：无证书 签密 攻击 改进 无双线性对 

分 类 号：TN918.4[电子电信—通信与信息系统]