基于椭圆曲线密码的安全门限代理签名方案  

Secure Threshold Proxy Signature Scheme Based on Elliptic Curve Cryptography

作　　者：田志刚[1] 鲍皖苏[1] 张炜[2] 

机构地区：[1]解放军信息工程大学电子技术学院,郑州450004 [2]解放军装甲兵工程学院,北京100072

出　　处：《计算机工程》2008年第24期170-171,174,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(10501053)

摘　　要：现有的门限代理签名方案大多基于有限域乘法群上的离散对数。基于ElGamal离散对数的密码机制存在密钥过长、密钥管理难等缺陷。该文针对上述缺陷,提出一个基于椭圆曲线密码机制的门限代理方案,满足了门限代理签名的性质,且能抵抗合谋攻击。Most threshold proxy signature schemes are constructed on the base of discrete logarithm in infinite fields. Discrete logarithm cryptography based on ElGamal has some drawbacks such as long keys and difficult key management, which seriously limit its practical application. Elliptic curve cryptography is introduced and a threshold proxy signature scheme based on the cryptography is proposed, which can satisfy the properties of the threshold proxy signature, and withstand the conspiracy attack.

关 键 词：代理签名 门限代理签名 椭圆曲线 合谋攻击 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]