摘要
区块链钱包系统中私钥一旦丢失或泄露将造成无法挽回的损失,为了保护私钥安全,国内外学者提出了门限签名算法。门限签名算法作为一种多方参与者合作签名的算法,能够防止密钥在使用时存在盗用或欺骗等恶意行为。SM2数字签名算法作为我国自主研发的签名算法,广泛应用于我国密码系统中的用户身份认证、保证数据完整性和真实性等方面。文中提出的门限SM2签名方案,基于CL加法同态加密方案,在签名者集合中恶意者占多数的情况下提供安全有效的签名。
Once the private key in the blockchain wallet system is lost or leaked, irreparable losses will occur to users. In order to ensure the security of private keys, scholars worldwide have proposed the threshold signature algorithm. As a multi-participant cooperative signature algorithm, the threshold signature algorithm can prevent malicious behaviors such as misappropriation or deception. It realizes power distribution and prevents a single user from abusing the power. The SM2 digital signature algorithm is a digital signature algorithm independently developed by Chinese researchers. After years of development, the SM2 digital signature algorithm has been widely used in cryptographic systems to authenticate user identities and ensure data integrity and authenticity. In this paper, a threshold signature scheme is proposed based on the SM2 digital signature algorithm. It provides a safe and effective signature for the scenario where the malicious parties are the majority of signers.
作者
唐张颖
王志伟
TANG Zhangying;WANG Zhiwei(School of Computer Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Jiangsu Key Laboratory of Big Data Security and Intelligent Processing,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)
出处
《南京邮电大学学报（自然科学版）》
北大核心
2022年第4期85-95,共11页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国家自然科学基金(61672016)
江苏省“六大人才高峰”高层次人才项目(RFW-010)
2019年度江苏省高校青蓝工程中青年学术带头人资助项目。
关键词
SM2数字签名
门限签名
密钥保护
SM2 digital signature
threshold signature
key protection
