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计算机工程 ›› 2012, Vol. 38 ›› Issue (3): 148-149,165. doi: 10.3969/j.issn.1000-3428.2012.03.050

• 安全技术 • 上一篇    下一篇

加权门限多秘密共享方案

邹 惠1,王建东1,宋 超2   

  1. (1. 石家庄经济学院信息工程学院,石家庄 050031;2. 中共中央办公厅机要局,北京 100034)
  • 收稿日期:2011-07-07 出版日期:2012-02-05 发布日期:2012-02-05
  • 作者简介:邹 惠(1978-),女,讲师、硕士,主研方向:信息安全;王建东,讲师、硕士;宋 超,学士

Weighted Threshold Multi-secret Sharing Scheme

ZOU Hui 1, WANG Jian-dong 1, SONG Chao 2   

  1. (1. Department of Information Engineering, Shijiazhuang University of Economics, Shijiazhuang 050031, China; 2. Confidential Bureau General Office, Central Committee of the Communist Party of China, Beijing 100034, China)
  • Received:2011-07-07 Online:2012-02-05 Published:2012-02-05

摘要: 现有加权秘密共享方案一次只能共享一个秘密。为此,提出一种参与者有权重的门限多秘密共享方案。利用中国剩余定理,将每次要共享的多个秘密映射到一个参数中,当参与者权重之和大于等于门限值时,恢复多个秘密。分析结果表明,该方案具有较高的安全性,且通信量较低。

关键词: 加权门限, 多秘密共享, 离散对数, Hash函数

Abstract: In the available weighted secret sharing scheme, only one secret can be shared in one sharing session. A weighted threshold multi-secret sharing scheme is proposed. By using the Chinese remainder theorem, many secrets mapping to one parameter is presented, when the sum of weights of the participants is as big as or bigger than the threshold value, they can recover the secret. Analysis shows that the proposed scheme is secure and has advantages of less communication.

Key words: weighted threshold, multi-secret sharing, discrete logarithm, Hash function

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