Digital certificates: Digital certificates are electronic ID cards issued by trusted parties know as Certificate Authority (CA) that establish credentials.
数字证书： 数字证书是由受信任方即认证机构（CA）发布的电子 ID 卡，用于建立凭证。
The Certificate Authority(CA) as the trustee third party is introduced, and an efficient fair electronic cash system is established based on the elliptic curve blind digital signature.
利用椭圆曲线上盲签名方法，引入认证中心（CA）作为可信的第三方，构建了一个高效的公平电子现金支付方案。
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