一种强指定验证者环签名和签密体制

doi:10.3969/j.issn.1671-1122.2015.10.002

信息网络安全 ›› 2015, Vol. 15 ›› Issue (10): 8-13.doi: 10.3969/j.issn.1671-1122.2015.10.002

一种强指定验证者环签名和签密体制

赵洋, 岳峰(), 熊虎, 秦志光

电子科技大学信息与软件工程学院,四川成都 610054

收稿日期:2015-06-14 出版日期:2015-10-01 发布日期:2015-11-04
作者简介:
作者简介：赵洋（1973-）,男,四川,副教授,博士,主要研究方向：网络安全;岳峰（1988-）,男,河南,硕士研究生,主要研究方向：网络安全;熊虎（1982-）,男,四川,副教授,博士,主要研究方向：网络安全;秦志光（1956-）,男,四川,教授,博士,主要研究方向：网络安全。
基金资助:
国家自然科学基金[61472064,61370026];国家高技术研究发展计划（国家863计划）[2015AA016007];四川省科技支撑计划[2014GZ0109]

A Strong Designated Verifier Ring Signature and Signcryption Scheme

Yang ZHAO, Feng YUE(), Hu XIONG, Zhi-guang QIN

School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu Sichuan 610054, China

Received:2015-06-14 Online:2015-10-01 Published:2015-11-04

摘要/Abstract

摘要：

指定验证者签名指定一个验证者对签名执行验证操作,但是对于其他任何第三方来说,他们都没有能力验证签名的正确性,其根本原因是指定的验证者同样可以生成一个签名,并且和签名者的签名是不可区分的。环签名则让签名者代表环匿名地对某个消息生成签名,验证者可以检验该签名的有效性,但却并不知道这个签名由环中的哪一个成员生成的。为保证签名者身份隐私性,同时保证只有指定验证者可以验证签名真实性,Wu等人结合指定验证者签名和环签名,提出了一个基于身份的强指定验证者环签名方案,这个方案允许签名者指定一个验证者,并对该验证者生成一个强指定验证者环签名,最终只有这个指定的验证者有能力验证该签名的真实性。通过对Wu等人提出的强指定验证者环签名方案进行分析,文章指出了该方案并不满足指定验证者签名的非授权性,同时给出了攻击方法。为避免该缺陷,文章对Wu等人的基于身份的强指定验证者环签名方案进行改进,改进后的方案是可证明安全的。此外,根据改进的方案,文章提出了一个新的强指定验证者环签密方案,在提供认证性的同时,保证了数据的机密性。

关键词: 环签名, 签密, 指定验证者环签名, 非授权性

Abstract:

The designated verifier signature specifies a verifier to check the validity of the signature; any third party can not check it because the designated verifier is able to generate an indistinguishable signature from the signer’s signature. In ring signature scheme, the signer can sign the message on behalf of the ring anonymously, the verifier can check the validity of the signature, but it cannot recognize which member of the ring has signed it. In order to ensure the signer’s identity privacy and that only the designated verifier can check the authenticity of the signature, Wu propose a strong designated verifier ID-based ring signature scheme through combining the designated verifier signature and the ring signature. The scheme allows the signer to designate a verifier and generate a designated verifier ring signature. Through the analysis on Wu’s scheme, we figure out the scheme does not satisfy the attribute of non-delegatability in designated verifier signature scheme and describe the attack method in this paper. For the sake of avoiding the flaw, this paper improves Wu’s scheme and makes it provably secure. In addition, according to the improved scheme, we propose a strong designated verifier ring signcryption scheme providing authentication and confidentiality simultaneously.

Key words: ring signature, signcryption, designated verifier ring signature, non-delegatability

中图分类号:

TP309

赵洋, 岳峰, 熊虎, 秦志光. 一种强指定验证者环签名和签密体制[J]. 信息网络安全, 2015, 15(10): 8-13.

Yang ZHAO, Feng YUE, Hu XIONG, Zhi-guang QIN. A Strong Designated Verifier Ring Signature and Signcryption Scheme[J]. Netinfo Security, 2015, 15(10): 8-13.

参考文献 15

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一种强指定验证者环签名和签密体制

A Strong Designated Verifier Ring Signature and Signcryption Scheme

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