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广义圆锥曲线的多方签名的安全分析与设计

Keywords: 多方签名协议,广义圆锥曲线,离散对数,伪造攻击,数字签名

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Abstract:

针对一个广义圆锥曲线的多方签名协议(Lin-Wang-Li协议)进行安全性分析,指出该方案存在着严重的伪造问题,方案的安全性没有基于广义圆锥曲线的离散对数问题和整数分解等任何数学难题,攻击者可以不用解决任何数学难题便可以伪造签名.同时,对广义的圆锥曲线的多方签名协议安全设计问题提出了解决方案.

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