摘要
EC-DSA需要计算有限域上的逆元,而求逆元的运算复杂而费时,且在该方案中密钥分割和合成都是很困难的,所以不能直接运用于门限签名。本文在一种改进的椭圆曲线数字签名算法的基础上,采用Shamir门限秘密共享技术,构造了一个基于椭圆曲线的(t,n)门限数字签名方案,并分析了它的安全性。该方案具有鲁棒性、通信代价更小、执行效率更高等特点。
EC-DSA needs for calculating inverse in the finite field, which is complex and time-consuming, what＇ s more, it is difficult to split and synthetic key in this scheme. So we can not directly apply it to threshold signature. Using Shamir threshold secret sharing technique, a （t,n） threshold signature scheme is constructed based on an improved elliptic curve digital signature algorithm in this paper. The scheme has robustness, requires less communication cost and performs efficiently etc, The security analysis of this scheme is proposed.
出处
《电脑知识与技术》
2006年第6期162-163,共2页
Computer Knowledge and Technology
关键词
数字签名
椭圆曲线
门限签名
安全性
digital signature
elliptic curve
threshold signature
security
