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中文摘要：
用双线性对构造了一种基于身份的电子现金支付方案.双线性对签字短、安全、高效,基于身份的密码系统其公钥可根据签名方的身份计算得出.本方案设立了一个中央银行,需发行电子现金的银行要向中央银行提出申请,公钥由发币行的身份计算得出,私钥由中央银行生成.
英文摘要：
Based on bilinear pairings, an Identity-Based electronic-cash scheme was introduced. The signature based on bilinear pairings which needs shorter signature was more secure and efficient. The public key of the identity-based cryptography was computed by the signatory＇s identity. Moreover,a center bank was set up in our scheme. The bank which wants to issue the E-cash would lodge an application to the center bank. The bank＇s public key was computed by its identity and the private key was generated by the center bank.
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