一种基于ACJT的指定验证者的群签名方案

Designated-Verifier Group Signature Scheme Based on ACJT

在ACJT群签名方案的基础上,提出了一种指定验证者的群签名方案。在这种方案中,有两种验证形式,即弱群签名方案(WDGS)和强群签名方案(SDGS)。在弱群签名方案中,验证者可以将签名转换为普通的群签名;在强群签名方案中,验证者只能验证签名的有效性,但不能向第三方证明签名的有效性。

This paper proposes a designated-verifier group signature scheme based on ACJT. In the scheme, there are two versions of Designated-Verifier Group Signature scheme （DVGS） ：weak DVGS and strong DVGS. In a weak DVGS scheme, however, the designated verifier can further convert such group signatures into common ones, while in a strong DVPS scheme, the verifier can only check the validity of the signature, but he can not convince the third party the validity of the signature.