计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (28): 122-124.

• 网络、通信与安全 • 上一篇    下一篇

一种新的可验证的秘密共享新个体加入协议

王 锋,张建中   

  1. 陕西师范大学 数学与信息科学学院,西安 710062
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-10-01 发布日期:2007-10-01
  • 通讯作者: 王 锋

New verifiable protocol for member expansion in secret sharing schemes

WANG Feng,ZHANG Jian-zhong   

  1. College of Mathematic and Information Science,Shaanxi Normal University,Xi’an 710062,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-10-01 Published:2007-10-01
  • Contact: WANG Feng

摘要: 基于Shamir门限秘密共享方案,提出了一个可验证的为新个体分配子秘密的算法。该算法具有无需信任中心,无需改动原有子秘密,仅需(3t+2)次广播,t个老成员合作(t为门限)等优点。经过分析与验证,该算法是正确的,与现有的协议相比,其安全性高,性能好,具有良好的可靠性和可用性。

关键词: 秘密共享, 新个体, 验证, 信任中心

Abstract: This paper proposes a new verifiable secret redistribution protocol according to threshold secret sharing schemes that create n shares of the secret for n shares of old participants,the protocol only requires t(t is the threshold) participants’ cooperation and(3t+2) times broadcasting to generate and to distribute the new share.The validity of the proposed protocol has a higher security and is easier in key management and better in reliability and usability.

Key words: secret sharing, new member, verify, trusted center