摘要： 为使电子现金的使用更具安全性、便利性，将代理签名与可分割电子现金技术相结合，实现了一个具有委托、代理功能的电子现金系统。它一方面允许用户将电子现金分成任意金额进行多次支付，另一方面又可以在电子现金所有者授权的情况下，代理人代其执行取款以及支付等相关活动。

关键词: 电子现金, 代理签名, 二叉代表树

Abstract: To use electronic cash more securely and conveniently, an E-cash system with the function of trust and proxy is proposed with the technologies of proxy signature and E-cash. It allows a cash user to subdivide the electronic coin into many pieces to allow each subdivided piece to be worthy any desired value less than the electronic coin and the total value of pieces equal to it. And on the other hand, the proxy can withdraw and pay a coin in place of the cash owner with his warrant.

Key words: E-cash, Proxy signature, Binary representative tree