0 引言
1 预备知识
1.1 符号描述
1.2 基于SM2的困难问题假设
1.3 SM2数字签名算法
1）系统初始化算法：
2）密钥生成算法：
3）签名生成算法：
4）签名验证算法：
2 基于SM2的周期性可否认环签名方案
2.1 周期性可否认环签名定义
1）系统初始化(Setup(λ)→params)：
2）密钥生成(Key Gen(params)→(pk;sk))：
3）签名(Sign(m;ski;L)→sig)：
4）验证(Verify(m;sig;L)→accept/reject)：
5）确认(Confirm:P?V)：
6）否认(Disavowal:P?V)：
2.2 安全模型定义
2.2.1 不可否认环签名安全模型定义
2.2.2 可否认环签名安全模型定义
2.3 方案描述
2.3.1 基于SM2的不可否认环签名方案描述
1）系统初始化算法：
2）密钥生成算法：
3）环签名生成算法：
4）环签名验证算法：
2.3.2 基于SM2的可否认环签名方案描述
1）系统初始化算法：
2）密钥生成算法：
3）环签名生成算法：
4）验证算法：
5）确认算法：
6）否认算法：
2.3.3 基于SM2的周期性可否认环签名方案描述
1）系统初始化算法(Setup(λ)→params)
2）密钥生成算法(Key Gen(params)→(pk;sk))
3）环签名生成算法(Sign(m;ski;L)→sig)
4）环签名验证算法(Verify(m;sig;L)→accept/reject)
5）确认算法(Confirm:P?V)
6）否认算法(Disavowal:P?V)
3 安全性分析
3.1 正确性
1）验证算法
2）确认算法
3）否认算法
3.2 不可伪造性
1）系统建立阶段
2）询问阶段
3）挑战阶段
3.3 匿名性
3.4 可追踪性
3.5 不可诽谤性
4 效率分析
4.1 通信开销分析
4.2 计算开销分析
5 结束语

Periodically Deniable Ring Signature Scheme Based on SM2 Digital Signature AlgorithmChinese Full Text English Full Text (MT)

ZHANG Yanshuo;YUAN Yuqi;LI Liqiu;YANG Yatao;QIN Xiaohong;Department of Cryptology Science and Technology,Beijing Electronic Science ＆ Technology Institute;Department of Electronic and Communication Engineering,Beijing Electronic Science ＆ Technology Institute;

Abstract: Periodically deniable ring signature enables ring members to deny their identity selectively as signers within the ring after each time period. This transformation,implemented periodically, established a self-controlled mechanism, enhancing the privacy protection for ring members while also fostering cooperation with regulatory authorities.Traditional digital signatures possess non-repudiation properties, ensuring the integrity and authenticity of the signature’s source and content. In contrast,... More

Keywords：

SM2; ring signature; deniability; periodicity; security;

Series：
(I) Electronic Technology ＆ Information Science
Subject：
Telecom Technology
Classification Code：
TN918.91

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Periodically Deniable Ring Signature Scheme Based on SM2 Digital Signature AlgorithmChinese Full Text English Full Text (MT)

ZHANG Yanshuo;YUAN Yuqi;LI Liqiu;YANG Yatao;QIN Xiaohong;Department of Cryptology Science and Technology,Beijing Electronic Science ＆ Technology Institute;Department of Electronic and Communication Engineering,Beijing Electronic Science ＆ Technology Institute;

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Cited 2Cites

Periodically Deniable Ring Signature Scheme Based on SM2 Digital Signature AlgorithmChinese Full TextEnglish Full Text (MT)

ZHANG Yanshuo;YUAN Yuqi;LI Liqiu;YANG Yatao;QIN Xiaohong;Department of Cryptology Science and Technology,Beijing Electronic Science ＆ Technology Institute;Department of Electronic and Communication Engineering,Beijing Electronic Science ＆ Technology Institute;

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Periodically Deniable Ring Signature Scheme Based on SM2 Digital Signature AlgorithmChinese Full Text English Full Text (MT)