一种无可信中心的群签名方案

One Group Signature Scheme without Trusted Center

针对群签名中的欺骗问题,利用离散对数问题的难解性和零知识证明协议,结合参与者的身份,提出了一种无可信中心的群签名方案。方案中,无可信秘密分发中心,分发者也是参与者,参与者的秘密份额是由参与者通过自己的影子秘密计算到得到,群公钥的恢复是隐形恢复。分析表明,该方案是有效的、安全的。

For the cheating problem in group signature, With the discrete logarithm problem and zero-knowledge proof protocol, and combined with the participants＇ identity, a group signature scheme without trusted center is presented. In the scheme, there is no trusted key distribution center, and the dealer is also a participant, each participant＇s secret shadow is composed of participants through the shadow of their own secret calculation to get, the group public key recovery is invisible recovery. The analysis shows that the scheme is safe and efficient.