[1]韦性佳,张京花,芦殿军.基于ECC 的具有前向安全性的 VSS 方案[J].计算机技术与发展,2018,28(04):157-160.[doi:10.3969/ j. issn.1673-629X.2018.04.033]
　WEI Xing-jia,ZHANG Jing-hua,LU Dian-jun.A Forward Security Secret Sharing Scheme Based on ECC[J].,2018,28(04):157-160.[doi:10.3969/ j. issn.1673-629X.2018.04.033]
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基于ECC 的具有前向安全性的 VSS 方案()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2018年04期
页码:
157-160
栏目:
安全与防范
出版日期:
2018-04-10

文章信息/Info

Title:
A Forward Security Secret Sharing Scheme Based on ECC
文章编号:
1673-629X(2018)04-0157-04
作者:
韦性佳; 张京花; 芦殿军
青海师范大学 数学与统计学院,青海 西宁 810008
Author(s):
WEI Xing-jia; ZHANG Jing-hua; LU Dian-jun
School of Mathematics and Statistics,Qinghai Normal University,Xining 810008,China
关键词:
椭圆曲线; 前向安全性; 可验证性; 秘密共享; 向量空间
Keywords:
elliptic curve; forward security; verifiable; secret sharing; vector space
分类号:
TP309
DOI:
10.3969/ j. issn.1673-629X.2018.04.033
文献标志码:
A
摘要:
秘密共享作为密码学的重要手段,已经广泛应用于安全的多方计算和分布式的密码学系统之中,但目前大多数秘密共享方案不具备前向安全性。 基于有限域上的椭圆曲线离散对数困难问题,结合前向安全性理论与向量空间存取结构,提出了一种新的具有前向安全性的可验证的秘密共享方案。 该方案可验证秘密与子秘密的准确性,实现可信中心与用户的双向验证；能够检测出系统中的欺诈行为,使得敌手无法伪造共享秘密；具有前向安全性,即使敌手掌握前一时间段的秘密也无法获取关于之前时间段秘密的任何信息,保障了共享秘密的安全性；具有门限性质,任何少于 t 个用户无法恢复共享秘密。 最后对方案的安全性和效率进行了分析,证明了该方案的安全性。
Abstract:
ecret sharing,as an important means of cryptography,has been widely used in secure multi-party computation and distributed cryptography. However,most secret sharing schemes do not have the character of forward security. In this paper,based on the discrete logarithm problem of elliptic curve over finite fields,combined with the forward security theory and the vector space access structure,we put forward a new verifiable secret sharing scheme with forward security. It verifies the accuracy of the secret and sub-secret and realizes the bidirectional authentication between trusted center and users. Moreover,it could detect the fraud of the system and makes it impossible for an adversary to forge a shared secret. With the forward security,even if the enemy has mastered the secret of the previous period of time,it cannot obtain any information,which guarantees the security of the shared secret. Having the property of threshold,any less than t users cannot recover the shared secret. Finally,the security and efficiency of the scheme are analyzed,and its security is proved.

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更新日期/Last Update: 2018-06-08