一个安全有效的RSA门限签名体制

A Secure and Efficient Threshold RSA Signature Scheme

提出一种新的RSA门限签名体制,具有如下性质:(1)利用知识证明构造子签名方案,从而子签名是安全的;(2)组签名的安全性是基于RSA问题及离散对数问题;(3)可以对签名者的身份进行追踪。

In this scheme,any t members can coop erate to generate a valid group signature on be-half of the group and one verifier is s ufficient to verify a given signatur e with the public keys.Meanwhile,the verifier can not reveal the signatures' identities.However,in exceptional cases(such as a legal dis-pute)any group signature can beopenedby the trusted center to reveal unamb iguously the identities of the actual signers.