A Class of Verifiable Threshold Signature Scheme
一类可验证的门限签名方案*

A class of threshold signature scheme based on ELGamal is presented,in which the participant's secret key can be reused,the validity verification of key and subkey is also provided to prevent both dealer cheating and other participant chea-ting. Its generalization and verification can be performed independently without key management center. This scheme need not compute the inverse element.