transitivity

This the paper proposes an identity based non-transferable signcryption scheme, the scheme builds up a signcyption algorithm, thus ensuring the confidentiality of the signature and the ambiguity of the signer?s identity.

在诸如匿名电子举报这类数字签名应用中,不仅需要确保被签名信息的机密性和签名者的身份模糊性,同时还需要确保签名的不可传递性。

Formal analysis shows that the scheme is signer-ambiguous,non-transferable and non-forgeable in Random Oracle Model.

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。