ID-based ring signcryption scheme without trusted party

doi:10.3778/j.issn.1002-8331.2009.27.036

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (27): 119-122.DOI: 10.3778/j.issn.1002-8331.2009.27.036

• 网络、通信、安全 • Previous Articles Next Articles

ID-based ring signcryption scheme without trusted party

CHENG Wen-hua，WANG Cai-fen，QIAO Xiao-ni，HAN Ya-ning，ZHANG Yu-lei

College of Mathematics and Information Science，Northwest Normal University，Lanzhou 730070，China

Received:2008-12-29 Revised:2009-03-05 Online:2009-09-21 Published:2009-09-21
Contact: CHENG Wen-hua

基于身份的无可信中心的环签密方案

程文华，王彩芬，乔小妮，韩亚宁，张玉磊

西北师范大学数学与信息科学学院，兰州 730070

通讯作者: 程文华

Abstract

Abstract: Ring signcryption realizes the confidentiality and authenticity of message at the same time，and realizes full anonymity of the signcrypter.The model and the notion of security of ID-based ring signcryption scheme without trusted party are given，and an ID-based ring signcryption scheme without trusted party is proposed.Compared with the original programs，trusted PKG is not needed and the problem of key escrow in the ID-based public key cryptography is eliminated in this scheme.Efficiency of the scheme is improved.Proposed scheme has the following properties：Signcrypter anonymity，indistinguishability，unforgeability，identity verifiablity and trace.

Key words: identity-based, Public Key Generator（PKG）, identity verifiablity, ring signcryption

摘要： 环签密不仅实现了消息的保密性和认证性，而且实现了签密者的完全匿名性。给出了基于身份的无可信中心的环签密的方案模型和安全定义，提出和证明了一种有效的基于身份的无可信中心的环签密方案，与已有的方案比较，不需要可信的PKG，解决了基于身份密码体制中的密钥托管问题，提高了效率。该方案满足匿名性、保密性、不可伪造性、身份验证、可追踪性。

关键词: 基于身份, 密钥生成中心, 身份验证, 环签密

CLC Number:

TP309

CHENG Wen-hua，WANG Cai-fen，QIAO Xiao-ni，HAN Ya-ning，ZHANG Yu-lei. ID-based ring signcryption scheme without trusted party[J]. Computer Engineering and Applications, 2009, 45(27): 119-122.

程文华，王彩芬，乔小妮，韩亚宁，张玉磊. 基于身份的无可信中心的环签密方案[J]. 计算机工程与应用, 2009, 45(27): 119-122.

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ID-based ring signcryption scheme without trusted party

基于身份的无可信中心的环签密方案

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