New electronic cash system with higher security and efficiency
一个新的安全且高效的电子现金系统

H.Xiaosong and T.Chik How presented a new ACJT-based electronic cash model with high efficiency and security in ITCC'05,but it could't prevent blackmailing and solve other anonymous problems such as lauder.It also can't avoid dual payment in advance and could't decrease storage space.Furthermore it didn't realize divisibility of ecash.So,this paper enhanced it through some methods as follows:apply alias-certificate to prevent blackmailing;use verify between merchant and user to previously avoid user' dual expense;add expire date in ecash in order to reduce the demand of storage;provide quasi-divisibility for ecash.Meanwhile,this paper analyzed this novel electronic cash system's efficiency and security.