摘要
提出一种基于椭圆曲线离散对数问题的代理签名方案。新方案除满足代理签名的七条基本性质外,还对目前已有的代理签名方案中尚未很好解决的问题———代理权滥用进行了有效的控制。在新方案中,若代理签名人签名超过证书上规定的次数,则他的私钥就会被破解(对原始签名人无影响),从而真正做到了对签名代理权的控制。另外,新方案基于椭圆曲线,且整个过程参与方少,具有安全性高、密钥量小、便于实现等优点。
A proxy signature scheme based on elliptic curve discrete logarithm problem is proposed. This scheme not only satisfies seven fundamental properties of proxy signature, but also effectively controls the problem of delegation power misuse, which has not been satisfactorily solved at present. In this scheme, the proxy signer can sign a signature N times at most. If he violates the condition, his private key will be revealed. So, this scheme can control the delegation power of the proxy signer. In addition, there are fewer parties involved in the signing process. It is characterized with high safety, less private key quantity and convenient use.
出处
《计算机应用研究》
CSCD
北大核心
2005年第11期99-100,156,共3页
Application Research of Computers
基金
国家自然科学基金资助项目(10271069)
陕西省自然科学基础研究计划资助项目(2002A03)
陕西师范大学重点科研项目资助课题
2005年研究生培养创新基金
关键词
椭圆曲线
代理签名
椭圆曲线离散对数
Elliptic Curve
Proxy Signature
Elliptic Curve Discrete Logarithm