Abstract: In the common signature verification protocol, the public key is used to detect theunauthorized modification of message and identify the signer by verifying the message and the signature. But the validity of the sub-signatures generated by sub private keys in threshold signature environment can’t be verified in this way because there are not public keys for the sub private keys. In order to identify the cheater, thepaper proposes a public-key-free signature verification protocol, which is suitable for the threshold signature environment.

摘要： 在一般的签名验证协议中,通常可以利用公钥对由私钥和消息产生的签名结果进行验证,以判断消息是否被篡改以及确认签名者的身份。但在门限签名环境中,因为私钥片段没有对应的公钥,所以由这些私钥片段所产生的部分签名无法通过相应公钥进行验证以判断其真实性。为了在门限签名环境中鉴别欺诈者,该文提出了一种适合于门限签名环境下的、无须公钥的签名验证协议,并证明其安全性。

关键词: 签名, 验证, 门限密码, 公钥密码

CLC Number: 

• TP393.08