ID-based Multi-Party Authenticated Key Agreement Protocols Using Multilinear Forms

ZHONG Huan; XU Chun-xiang

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ID-based Multi-Party Authenticated Key Agreement Protocols Using Multilinear Forms

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- ID-based Multi-Party Authenticated Key Agreement Protocols Using Multilinear Forms
- Acta Electronica Sinica Vol. 36, Issue 10, Pages: 1869-1872(2008)
- 作者机构：
  
  电子科技大学计算机学院,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914
- Published：2008
- 稿件说明：
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ZHONG Huan, XU Chun-xiang. ID-based Multi-Party Authenticated Key Agreement Protocols Using Multilinear Forms[J]. Acta Electronica Sinica, 2008, 36(10): 1869-1872.
DOI：

ZHONG Huan, XU Chun-xiang. ID-based Multi-Party Authenticated Key Agreement Protocols Using Multilinear Forms[J]. Acta Electronica Sinica, 2008, 36(10): 1869-1872. DOI：

摘要

2002年

Boneh和Silverberg提出了多线性表理论和基于多线性表的多方Diffe-Hellman密钥交换协议

H.K.Lee等人在该协议基础上利用证书对参与者进行身份认证

解决了该协议容易遭受中间人攻击的问题

H.M.Lee等人进一步引入基于身份的公钥密码技术替代数字证书

提高了密钥协商的效率

形成了ID-MAK协议.在本文中

我们对ID-MAK协议进行了安全性分析

发现ID-MAK协议没有真正实现它所宣称的身份认证

不能抵御主动攻击

敌手可冒充任意合法成员参与到密钥协商中获取组密钥.本文在计算多线性D-H问题假设下提出了两个ID-MAK协议改进方案

两个改进协议只需一轮即可协商一个组密钥

本文还给出了相应的成员动态变化和组密钥更新协议.本文最后对我们改进的协议进行了安全性分析.

Abstract

In 2002

Boneh and Silverberg presented theory of multilinear forms and a multi-party Diffe-Hellman key agreement protocol using multilinear forms.H.K.Lee et al adopted certificates to authenticate group members and protect against middle-man attacks in this protocol.Subsequently

H.M.Lee et al deployed ID-base public keys other than certificates in the MAK protocol

and presented the ID-MAK protocol.Owing to simplicity of ID-base public keys

the ID-MAK Protocol is more efficient.In this paper

we analyze the security of the ID-MAK protocol

and have found that the ID-MAK protocol doesn’t really authenticate group members as claimed.Thus it cannot resist active attacks

and an adversary can pretend to be a legal member to obtain the group key.Based on the computational multilinear Diffe-Hellman assumption

we present two improved schemes to the ID-MAK protocol to remove this security defect.Both our improved protocols need only one round agreement.They support dynamic member change and key refresh.Our security analysis shows that they are secure.

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