A novel forward secure threshold digital signature scheme
Li-Ze Gu · Shenyang Gongye Daxue xuebao · 2012
In order to solve such problem that the forward secure threshold digital signature could not prevent the attacker from counterfeiting the signature in the later time period,a novel forward secure threshold digital signature scheme with the backward secure detection was proposed using one-way Hash chain technology.The proposed scheme achieves not only the forward security but also the backward security.Namely,when the group signature secret keys or the sub-group signature secret keys of group members in current time period were disclosed,the signature security in both former and later time periods would not be influenced.The analysis shows that the proposed scheme can avoid the internal deception and resist the counterfeit attack.Moreover,the proposed scheme has the higher security,and can effectively prevent the attackers from counterfeiting the signature in each time period.