矢量空间秘密共享-多重签名方案

本文把矢量空间秘密共享方案与多重签名方案结合起来 ,提出了一种新的签名方案 ,即矢量空间秘密共享 -多重签名方案 ,并对该方案的安全性进行了分析 .在该方案中 ,任何参与者的授权子集能容易地产生群签名 ,而参与者的非授权子集不可能产生有效的群签名 ,验证者可通过验证方法验证个体签名和群签名的合法性 .该方案能保证一个参与者的授权子集的群签名不能被其他参与者子集所伪造 ,而且可以跟踪被怀疑的伪造者并将其曝光 .该方案能抵御各种可能的攻击 .

A Vector Space Secret Sharing-Multisignature Scheme

A new signature scheme,i.e.a vector space secret sharing multisignature scheme,is proposed based on vector space secret sharing scheme and multisignature scheme.The security of this scheme is analyzed.In this scheme,the group signature can be easily produced if an authorized subset of participants pool their secret shares and it is impossible for them to generate a group signature if an unauthorized subset of participants pool their secret shares.The validity of the partial signature and the group signature can be verified by means of verification equations.A group signature of authorized subset of participants cannot be impersonated by any other set of participants.Moreover the suspected forgery can be traced and the malicious participants can be caught in this scheme.None of several possible attacks can successfully break this scheme.