Dynamic secret sharing scheme of （t，n） threshold

doi:10.3778/j.issn.1002-8331.2009.22.022

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (22): 66-67.DOI: 10.3778/j.issn.1002-8331.2009.22.022

• 网络、通信、安全 • Previous Articles Next Articles

Dynamic secret sharing scheme of （t，n） threshold

XU Chun-gen¹，YANG Yan-jiong²，DOU Ben-nian¹，HAN Mu³

1.Department of Applied Mathematics，Nanjing University of Science & Technology，Nanjing 210094，China
2.Zijin College，Nanjing University of Science & Technology，Nanjing 210094，China
3.School of Computer Science and Technology，Nanjing University of Science & Technology，Nanjing 210094，China

Received:2008-10-22 Revised:2009-01-04 Online:2009-08-01 Published:2009-08-01
Contact: XU Chun-gen

（t，n）门限的动态秘密共享方案

许春根¹，杨彦炯²，窦本年¹，韩牟³

1.南京理工大学应用数学系，南京 210094
2.南京理工大学紫金学院，南京 210094
3.南京理工大学计算机学院，南京 210094

通讯作者: 许春根

Abstract

Abstract: Secret sharing is one of the important way to save securely important information and data.In this paper，it discusses some typical schemes on the threshold secret sharing scheme，and analyzes the shortcomings of these scheme in applications.In Amir-Herzberg’s dynamic scheme，when all of shareholders want to update，then they can update the old secret shadow.This paper presents a threshold dynamic secret sharing scheme to improve Amir-Herzberg’s dynamic scheme，and some of the shareholders（maybe less than the threshold） can update the old secret shadow with new secret shadows periodically.This scheme has a better flexibility under the specific condition.

Key words: secret sharing, Amir-Herzberg secret sharing, threshold

摘要： 秘密共享是安全地保存信息和数据的一种重要方法，介绍了一些典型的门限秘密共享方案以及分析了它们的一些不足。在Amir-Herzberg动态方案中必须所有参与者要求更新子秘密时，才可以发起更新子秘密。对Amir-Herzberg动态方案进行了改进，只要参与者中的部分人（甚至少于门限值）就可发起更新子秘密，此方案在某些条件下更具有灵活性。

关键词: 秘密共享, Amir-Herzberg方案, 门限

XU Chun-gen¹，YANG Yan-jiong²，DOU Ben-nian¹，HAN Mu³
. Dynamic secret sharing scheme of （t，n） threshold[J]. Computer Engineering and Applications, 2009, 45(22): 66-67.

许春根¹，杨彦炯²，窦本年¹，韩牟³. （t，n）门限的动态秘密共享方案[J]. 计算机工程与应用, 2009, 45(22): 66-67.

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Dynamic secret sharing scheme of （t，n） threshold

（t，n）门限的动态秘密共享方案

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