【摘要】 在代理签名、椭圆曲线密码体制和前向安全签名的基础上,提出一种基于椭圆密码体制的前向安全代理签名方案,保证了系统在泄露密钥(或撤销密钥)后以前所做签名的有效性问题,并讨论其方案的正确性和安全性.更多还原

【Abstract】 This paper introduces the basis concepts of the proxy signature,forward secure signature and elliptic curve cryptosystem.A forward secure proxy signature scheme based on the elliptic curve cryptosystem is proposed .This scheme makes sure of the validity of signature of former phases if the private key in the signature is leaked out in some period of time.The analysis for the security and validity of the scheme is made.更多还原