关键词: 匿名性;可分电子货币;智能卡;离线交易;PBOC2.0

Abstract:

In this paper, a new anonymous divisible E-cash protocol was proposed, by making use of the physical security of PBOC2.0 IC Card, to support offline transaction. The proposed protocol is more efficient than those based on partial blind signature or zeroknowledge proof. It also integrates a control mechanism to regulate withdrawal, payment, loss reporting and deposit of coins, so as to erase the relationships among different coins and maintain anonymity. Moreover, security was proved under both cryptology principles and financial security standards. This affords the protocol to be more suitable for Internet transaction, offline transaction and P2P transaction. Especially, it can act as a practical PBOC IC card application complement.