基于椭圆曲线的门限身份认证方案

提出了基于椭圆曲线的门限身份认证协议。证书中心采用无可信中心的门限密钥系统，任何t个有效成员组合均能有效地将用户提交的ID号和公钥以证书的形式绑定在一起，但t-1个成员则无法运行发放有效证书，从而实现了在用户与用户之间无需第3方的身份认证。在生成证书过程中每个参与者均能检验前面参与者的签名是否有效，防止了假冒者或来自系统内的攻击。由于用户密钥采取分散管理体制，因而具有更高的保密性。

Threshold secret authentication based on ellipitic curve

A new authentication based on threshold secret system is proposed. The certificated system has no trusted dealer, every qualified subset of the group including t out ofn players could tie the users ID and public key via the certification, but no subset of t-1 could accomplish it. So the identity authenticated between user and user is realized. In the course of certification posing, every player can verify the valid of the signature of the others. This can prevent the attacker imitate the legal player or the legal player forge illegal signature. Because the keys are mana~,ed distributed, its security is better.