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该文在ElGamal型门限数字签名的基础上构造了一种具有前向安全性的门限数字签名方案。其安全特性:既使泄漏当前的签名私钥也不能使攻击者伪造出过去的签名。
This paper constructs a threshold digital signature scheme with forward security based on ElGamal-type threshold digital signature. Its security features: Leak even the current signature of the private key can not make the attacker forged the past signature.