【摘要】 网络环境中的某些应用(如匿名电子举报)要求数字签名同时具备签名者身份模糊性和签名不可传递性,而现存的签名方案都不能完全满足此类需求。为此,提出了一种新的签名方案即基于身份的不可传递性环签名方案,设计了一个基于双线性对的特殊哈希函数,并将该哈希函数引入到环签名中,使方案很好地满足了上述需求。形式化分析表明,方案生成的签名在随机预言模型(Random Oracle Model,ROM)下具有不可伪造性。更多还原

【Abstract】 Some digital signature applications in Network Environment,e.g. an anonymous e-impeachment,has the requirement of guaranteeing both the signer-ambiguity and non-transferability,but most of the current signature schemes can not fully meet such requirements. The paper proposes a new scheme called Identity-based Non-transferability Ring Signature Scheme,in which a special hash function from bilinear pairing is constructed. Thus the scheme satisfies the above applications requirements. Formal analysis shows that the scheme is signer-ambiguous,non-transferable and non-forgeable in Random Oracle Model.更多还原