ISRSAC上基于身份的代理环签名方案设计

Design of Identity Based Proxy Ring Signature Scheme on ISRSAC

数字签名作为核心密码技术之一,对数据安全保护起着重要作用。代理环签名是一种兼具环签名和代理签名两者功能的特殊类型的数字签名,适用于对用户身份信息有较高保护需求的领域。RSA作为数字签名的基础算法之一,其安全性随着量子计算的快速发展而遭受威胁。2018年,M.Thangaval等人在RSA的基础上提出ISRSAC算法,该算法通过增加因式分解复杂性并引入随机数实现对传统RSA安全性的改进。在赵等人基于身份及RSA的代理环签名的基础上做出了改进,结合更安全的ISRSAC算法设计并提出了一个基于身份的代理环签名方案,并对方案的正确性及安全性展开分析,同时与其他方案进行对比说明,结果表明该方案具有强不可伪造性、匿名性等,能够有效保护授权信息,在匿名电子投票等领域具有很好的现实意义和应用价值。

As a core cryptographic technology,digital signature plays an important role in data security.Proxy ring signature is a special digital signature type combining the functions both of the ring signature and the proxy signature,which is applicable to the fields requiring for high user identity information protection.RSA is a basic algorithm of digital signature,whose security is under threat from rapid de⁃velopment of the quantum computing.In 2018,M.Thangaval et al.proposed the ISRSAC algorithm based on the RSA,which improves the security of traditional RSA by increasing the complexity of fac⁃torization and inducing the random numbers.In this paper,combined with the more secure ISRSAC al⁃gorithm,an identity⁃based proxy ring signature scheme is designed and proposed on the improvement performed by Zhao et al.based on identity and RSA proxy ring signature,whose validity and security are analyzed and performance is compared with other schemes.Results indicate that the scheme has strong unforgeability,anonymity,etc.,and could effectively protect the authorized information and has good practical significance and application value in the fields of anonymous electronic voting,etc.