| 双向安全的群签名方案 |
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| 引用本文： | 周由胜,辛阳,卿斯汉,杨义先.双向安全的群签名方案[J].北京工业大学学报,2012,38(5):736-739. |
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| 作者姓名： | 周由胜 辛阳 卿斯汉 杨义先 |
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| 作者单位： | 1. 北京邮电大学网络与信息攻防技术教育部重点实验室,北京,100876
2. 中国科学院软件研究所,北京,100190 |
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| 基金项目： | 国家重大科技专项资助项目，国家“九七三”计划资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 为了研究群签名方案的前向安全性和后向安全性保证技术,基于哈希链实现了一种具备前向安全和后向安全的群签名方案,在密钥更新阶段采用门限方法与其他成员共享其每个时间周期内的子秘密,在签名生成阶段成员利用公开信息和哈希函数单向性验证其他参与者份额的真实性,即使在验证失败的情况下也可由多个参与者利用门限方案合作完成群签名,提升了系统的安全性和稳定性.分析表明,该方案比现有同类群签名方案具有更好的安全性和更高的效率.
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| 关 键 词： | 密码学 群签名 前向安全 后向安全 |
Forward-backward Secure Group Signature Scheme |
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| ZHOU You-sheng,XIN Yang,QING Si-han,YANG Yi-xian.Forward-backward Secure Group Signature Scheme[J].Journal of Beijing Polytechnic University,2012,38(5):736-739. |
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| Authors: | ZHOU You-sheng XIN Yang QING Si-han YANG Yi-xian |
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| Affiliation: | 1(1.Key Laboratory of Network and Information Attack and Defence Technology of the Ministry of Education, Beijing University of Posts and Telecommunications,Beijing 100876,China; 2.Institute of Software,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | To investigate forward security and backward security,a one-way Hash chain-based group signature scheme is presented,in which the subsecrets of each interval are shared by using threshold method,and the validity of shares can be verified by using Hash chains and public information.The group signature can be generated successfully even if minority players present fault shares to the signer by utilizing the threshold method.In this way,the performance and security are improved.Analysis shows that the proposed scheme is not only more efficient but also more secure than previous group signature schemes. |
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| Keywords: | cryptography group signature forward-secure backward-secure |
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