Protocol for member expansion in vector space secret sharing

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (16): 74-76.

• 网络、通信、安全 • Previous Articles Next Articles

Protocol for member expansion in vector space secret sharing

BI Yue，HOU Zhengfeng

School of Computer and Information，Hefei University of Technology，Hefei 230009，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-06-01 Published:2011-06-01

一个基于向量空间秘密共享的新成员加入协议

毕越，侯整风

合肥工业大学计算机与信息学院，合肥 230009

Abstract

Abstract: This paper puts forward a new member entry protocol which can be verified.When a new member enters the threshold system，he can choose any two old members to help produce a new secret share，which is ultimately obtained by the new member’s own calculation.During the new share producing process，the new member can verify the validity of his share.Different with previous protocols，the new share is obtained by the new member’s own calculation via “Black Box” in this new protocol.Comparing with the majority of previous protocols which are based on （t，n） threshold theory of Shamir，this protocol has more generality because the paper is based on vector space secret sharing.

Key words: secret sharing, vector space, verifiable, interactive, RSA algorithm

摘要： 提出了一个可验证的新成员加入协议。当新成员加入门限系统时，可以选择任意两个旧成员协助产生新的秘密份额，新份额最终由新成员独立计算获得。在产生新份额的过程中，新成员可以验证份额的有效性。与以往所提出的新成员加入协议不同的是，本协议中的新份额是由新成员利用“黑箱子”独立计算获得，能够避免产生旧成员“合谋攻击”的隐患;基于向量空间秘密共享，较之以往大多基于Shamir（t，n）门限理论，本协议更具一般性。

关键词: 秘密共享, 向量空间, 可验证, 交互式, RSA算法

BI Yue，HOU Zhengfeng. Protocol for member expansion in vector space secret sharing[J]. Computer Engineering and Applications, 2011, 47(16): 74-76.

毕越，侯整风. 一个基于向量空间秘密共享的新成员加入协议[J]. 计算机工程与应用, 2011, 47(16): 74-76.

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Protocol for member expansion in vector space secret sharing

一个基于向量空间秘密共享的新成员加入协议

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