问答器 meaning in English

challenger
interrogator-responder
interrogator-responsor

The security of the signature schemes whose signatures have specific form is discussed in the random oracle model
在随机问答器模型下讨论了签名具有某种特定形式的签名体制的安全性。
As an example , we proof the security of schnorr signature against adaptive chosen message attack in the random oracle model
作为一个例子，证明了schnorr签名在随机问答器模型下对自适应选择消息攻击的安全性。