一种新的双重门限证实数字签名方案

在已有的(t,n)门限数字签名方案及证实数字签名的基础上,提出了新的双重门限证实数字签名方案(t1,n1;t2,n2)。新方案首次在签名证实阶段引入了门限方案,由一群符合一定条件的t2个人组成证实者(confirm er)。因为是由不同的各方参与进来,方案具有了更加广泛的可信任性,从而使得该方案适用于某些安全程度要求较高的情况。

A New Doubled Threshold and Confirmer Digital Signature Scheme

A new doubled threshold confirmer signature scheme(t_1,n_1;t_2,n_2)is proposed based on the existing(t,n)threshold digital signature schemes and confirmer digital signature schemes.Threshold scheme is introduced into the new scheme at the stage of confirmation of the signature for the first time,besides retaining the(t_1,n_1)threshold scheme to produce signer during the period of signing,that is to say,t_2 out of n_2 compose a confirmer.The new scheme has more expansive confidentiality because of different parties'participation.Therefore it will be applicable to some environments where higher security is required,such as transactions between different aerospace departments.