关键词: 可分电子现金, 单向累加器, 匿名性, 无连接性, 无可信第三方

Abstract: Based on the theory of one-way accumulator and the binary tree technology，this paper puts forward an off-line divisible e-cash scheme which provides both full unlinkability and anonymity without requiring a trusted third party.The introduction of the probabilistic audit permits both the effective deterrent on illegal users and guarantee the banks from loses as well as the lower costs of the system.Security of the scheme is based on the assumptions of decision diffie-hellman，the hardness of calculating discrete logarithm and the existence of the one-way hash function.

Key words: divisible e-cash, one-way accumulator, anonymity, unlinkability, without TTP