Threshold group signature is an important kind of signatures, but all of the existing threshold group schemes have weaknesses.
门限群签名是一类重要的数字签名，但现有的门限群签名方案几乎都有缺点。
In most available threshold signature schemes, only one group secret key is Shared among a group of signers and the threshold value is fixed.
现有大多数门限签名体制存在一个共同的问题：门限值是固定的，这限制了它们的应用范围。
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