现代信息科技2024，Vol.8Issue(8)：182-185,4.DOI:10.19850/j.cnki.2096-4706.2024.08.039
一个常数长度的无证书聚合签名方案的攻击与改进
Attack and Improvement on a Certificateless Aggregate Signature Scheme with Constant Length
摘要
Abstract
Hashimoto and Ogata propose a certificateless aggregate signature scheme with a fixed signature length based on bilinear pairings.The safety of the protocol can be attributed to the CDH difficulty problem,and it is proved that the scheme is safe for the Normal-Ⅰ and Ⅱ adversaries in the random oracle model.It is unsafe to ignore the attack of Super-Ⅰ adversary.Firstly,it is proved that this scheme is vulnerable to the attack of Super-Ⅰ adversary,and an improved scheme to resist this attack is given.The new scheme depends on the number of signers,the length is n+1,and the number of operations of the bilinear pairings is 2n+1.Compared with the original scheme,although the operation is slightly increased,the security is enhanced,and it can resist the attacks of all Class Ⅰ and Class Ⅱ adversaries.关键词
无证书签名/聚合签名/CDH问题/Ⅰ类敌手/Ⅱ类敌手Key words
certificateless signature/aggregate signature/CDH problem/Class Ⅰ adversary/Class Ⅱ adversary分类
信息技术与安全科学引用本文复制引用
刘莉..一个常数长度的无证书聚合签名方案的攻击与改进[J].现代信息科技,2024,8(8):182-185,4.基金项目
安徽省高等学校自然科学研究重点项目(KJ2020A1107,KJ2021A1523) （KJ2020A1107,KJ2021A1523）
安徽省质量工程项目(2020kfkc158) （2020kfkc158）
