There are three authentication systems now: Public Key Infrastructure (PKI), Identity-Based Encryption (IBE) and Combined Public Key (CPK).
现今有三种认证系统：公钥基础设施(PKI)、基于标识的加密系统(IBE)和组合公钥系统(CPK)。
The current proxy blind signature are based on the identity or certificate, needing reliable third-party authentication. Public key system without the certificate has to overcome this shortcoming.
当前的代理盲签名都是基于身份或证书的，需要可靠的第三方认证，而无证书公钥系统却克服了这种缺点。
The IBE-based identity authentication scheme, which is without the need for issuing digital certificates to bind user identity and public key, can improve the certification efficiency.
基于IBE的身份认证方案无需通过颁发数字证书来绑定用户身份和公钥，可以提高认证效率。
The IBE-based identity authentication scheme, which is without the need for issuing digital certificates to bind user identity and public key, can improve the certification efficiency.
基于IBE的身份认证方案无需通过颁发数字证书来绑定用户身份和公钥，可以提高认证效率。
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