计算机工程与应用 ›› 2013, Vol. 49 ›› Issue (6): 97-99.

• 网络、通信、安全 • 上一篇    下一篇

椭圆曲线上一个动态秘密共享方案

郭  帅1,谢淑翠2   

  1. 1.西安邮电大学 通信与信息工程学院,西安 710061
    2.西安邮电大学 理学院,西安 710061
  • 出版日期:2013-03-15 发布日期:2013-03-14

Secret sharing scheme based on elliptic curves

GUO Shuai1, XIE Shucui2   

  1. 1.School of Telecommunication and Information Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710061, China
    2.School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710061, China
  • Online:2013-03-15 Published:2013-03-14

摘要: 基于椭圆曲线密码体制提出一个动态秘密共享方案。新方案具有系统参与者子秘密份额更新容易、参与者动态管理灵活的特点,实现了组成员的动态管理。通过椭圆曲线上的签密算法,使系统各个成员之间的通信不需要安全信道,从而保证了方案的安全性和实用性。

关键词: 秘密共享, 签密算法, 椭圆曲线离散对数问题, Lagrange插值

Abstract: A dynamic secret sharing scheme based on elliptic curve cryptosystem is proposed. In the new scheme, the participants can update sub secret share easily and dynamic manage flexibly, which realizes the dynamic management of group members. A secure channel among all the members is not needed because of using signcryption algorithm on elliptic curve in the system, which ensures the security and practical of the scheme.

Key words: secret sharing, signcryption algorithm, elliptic curve discrete logarithm problem, Lagrange interpolation