计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (32): 85-86.DOI: 10.3778/j.issn.1002-8331.2008.32.025

• 网络、通信、安全 • 上一篇    下一篇

基于ECC的无可信中心的(tn)门限秘密共享方案

符茂胜1,2,罗 斌1   

  1. 1.安徽大学 计算机科学与技术学院,合肥 230039
    2.皖西学院 计算机科学与技术系,安徽 六安 237012
  • 收稿日期:2007-12-07 修回日期:2008-02-20 出版日期:2008-11-11 发布日期:2008-11-11
  • 通讯作者: 符茂胜

tn) threshold secret sharing scheme without SDC based on ECC

FU Mao-sheng1,2,LUO Bin1   

  1. 1.School of Computer Science and Technology,Anhui University,Hefei 230039,China
    2.Department of Computer Science and Technology,West Anhui University,Liu’an,Anhui 237012,China
  • Received:2007-12-07 Revised:2008-02-20 Online:2008-11-11 Published:2008-11-11
  • Contact: FU Mao-sheng

摘要: 利用椭圆曲线离散对数问题(ECDLP),设计了一个无可信中心(SDC)的(tn)门限秘密共享方案。系统的初始化、组成员的私钥、公钥的产生都不需要SDC的参与,利用各成员之间的秘密共享值,构造了秘密共享矩阵,结合Lagrange插值定理,实现了(tn)门限秘密共享。分析表明,该方案具有较高的安全性和一定的实用价值。

关键词: 椭圆曲线, 秘密共享, 门限方案, 可信中心

Abstract: By means of Ellipse Curve Discrete Logarithm Problem(ECDLP),a (tn) threshold secret sharing scheme based on ellipse curve cryptography is proposed in this paper.Systemic initialization,the private key and the public key are produced without SDC,the secret sharing matrix is built by the secret sharing value of each member’s.At last a(tn) threshold secret sharing scheme is realized by the matrix and Lagrange interpolation theorem.The scheme is security in theory and is suitable for the practice.

Key words: Elliptic Curve Cryptography(ECC), secret sharing, threshold scheme, trusted Share Distribution Center(SDC)