【摘要】 在离散对数和单向Hash函数安全性前提下,基于分组秘密共享方案设计了一种新的门限签名方案。该方案生成有效签名的t个成员不具有任意性,而是分别来自系统中不同群组的成员,他们能代表整个系统为某个消息生成有效的群签名;同时只要有一组成员不参与,即便成员数目再多也无法为消息生成有效的群签名(即任意一组成员对消息的签名均有表决权)。一旦消息有效的群签名生成,就代表着整个系统的利益,从而确保整个系统良性、高效地运作。更多还原

【Abstract】 A new type(t,n) threshold group signature scheme with the security of the discrete logarithm and one-way Hash was proposed based on block secret sharing scheme.The feature was that any t or more group members coming from all kinds of group organizations could cooperate to generate a valid group signature,a valid group signature couldn’t conspire to forge when one or more organizations didn’t agree to do so.But once a valid group signature was formed,it could stand for the whole group and assured that all members could efficiently cooperate.更多还原