摘要
利用椭圆曲线提出了一种基于一般访问结构的多重秘密共享体制,可以有效阻止敌方窃取秘密或子秘密,防止内部成员之间的互相欺诈。方案中参与者的子秘钥是由各参与者选择,秘密分发者不需向各参与者传送任何秘密信息。当秘密更新、访问结构改变或参与者加入/退出系统时,成员的子秘钥无需改变。该文对体制的安全性和效率进行了分析,并与以往的方案进行了比较。
Based on elliptic curve, a new secret sharing scheme for general access structure is proposed. It is able to prevent adversaries from getting the secret and efficiently guard against cheating among participants. Each participant＇s secret is selected by participant himself and the dealer need not deliver any secret information to each participant. The secret do not need to be changed when the shared secret is renewed, the access structure is altered, or participants added/deleted. This paper analyzes the security and efficiency of this scheme, and compares it with the scheme.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第13期176-178,共3页
Computer Engineering
基金
现代通信国家重点实验室基金资助项目(51436020405JB5205)
国家自然科学基金资助项目(60503012)
关键词
秘密共享
椭圆曲线
访问结构
欺诈
secret sharing
elliptic curve
access structure
cheat
作者简介
康斌（1983-），男，硕士研究生，主研方向：协议分析，密码理论；E-mail：kb5702@tom．com.
余昭平，教授.
