An Identity-Based Mediated Signature Scheme

苏万力; 张晓红; 杨君刚; 王育民

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An Identity-Based Mediated Signature Scheme

更新时间：2026-09-14

- An Identity-Based Mediated Signature Scheme
- 一种具有中介的基于身份的签名方案
- Vol. 31, Issue 6, Pages: 587-591(2010)
- 作者机构：
  
  1. 青岛农业大学信息科学与工程学院
  2. 西安电子科技大学综合业务网理论及关键技术国家重点实验室
  3. 西安通信学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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苏万力, 张晓红, 杨君刚, et al. An Identity-Based Mediated Signature Scheme[J]. 2010, 31(6): 587-591.
DOI：

苏万力, 张晓红, 杨君刚, et al. An Identity-Based Mediated Signature Scheme[J]. 2010, 31(6): 587-591. DOI：

摘要

针对基于身份密码体制中用户身份的吊销问题

提出了一种新的具有中介的基于身份签名方案.该方案不同于传统的方案

而是重新考查了用户注册过程中的安全性.在新方案中

用户注册时

密钥生成中心(KGC)只为用户生成公共信息

对已吊销的用户或只是注册而不进行任何操作的用户

KGC不提前生成部分密钥和中介的私钥

不提前为它们发送私钥.对新方案的性能分析结果表明:减少了计算量

节省了存储和带宽

降低了由于提前传送密钥带来的风险

提高了系统的安全性.并在随机预言机模型下证明了该方案的安全性.

Abstract

It is always a critical issue to find efficient methods for fast revocation of a user's identity in identity based cryptosystems.An efficient identity-based mediated signature scheme is proposed.Unlike traditional schemes which assume an ideal implementation of a key-registration and key generation

new scheme focus on the security of user registration and key generation.In the user registration

the key generation centre(KGC) generates user's public information in advance

and do not issue private keys for user and semitrusted mediator(SEM).The private key will be not sent back to the user and SEM.Analysis shows that the proposed scheme reduces computation cost and bandwidth

and enhances security.The scheme's security is proven in the random oracle model.

关键词

Keywords

references

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Chow S S M,Boyd C C,Nieto J M G.Security mediated certificateless cryptography[C].Proceedings of PKC’06,LNCS 3958.Springer-Verlag,2006:508-524.

Ju HS,Kim D Y,Lee D H,et al.Efficient revocation of security capability in certificateless public key cryptography[C].In Knowledge-Based Intelligent Information and Engineering Systems 2005,LNAI 3682:453-459.

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Pointcheval D,Stern J.Security proofs for signature schemes[C].EUROCRYPT 1996.LNCS 1070,SpringerVerlag,1996:387-398.

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