提出了一种具有限制代理签名者行使代理签名权力的新型可控代理签名方案XECLPS,以解决目前的各种代理签名方案所存在的无法实现对代理签名者的代理签名权力进行全面、完整、可靠地控制的问题.同时对这一方案的复杂性和安全性进行了分析.新方案不仅推广和丰富了代理签名的研究成果和应用范围,而且也扩展了椭圆曲线密码体系的功能,为信息安全同题的解决提供了新的密码学方法.
A new proxy digital signature scheme based on elliptic curve discrete algorithmic problems, which is named as Xiao's EUiptic Curve Limited Proxy Signature (XECLPS), is presented in this paper. XECLPS offers the overall, reliable control on the using of proxy digital signature power. Its complexity and security are analyzed. The new scheme, which is an extension of elliptic curve cryptosystems function, is beneficial for the study on the proxy digital signature.