【摘要】 对代理签名方案的安全性进行了分析,表明该方案易受内部攻击,指出当代理签名者内有l+1个成员合伙的时候就能够攻破这类门限代理签名系统。因此,该签名方案不符合数字签名所必须满足的不可伪造性和不可否认性原则。更多还原

【Abstract】 It finds that threshold proxy signature systems will he broken if any l+1 members of the proxy signature group cheat together.The potential for the possibility that any original signer or proxy.Because of this,JXZ-scheme cannot meet the needs of digital signature,such as un-forgeable and undeniable更多还原