Camenisch等人[4]和 Frankel等人[5]分别独立地首次提出了公平的离线电子现金( fair off-line electronic cash )的概念，甚至能接受比特币兑换美元、欧元等服务。之类。
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受限盲签名是实现高效离线电子现金系统的关键技术。
Restrictive blind signature is the essential technology in the implementation of efficient off-line e-cash system.
探讨在离线电子现金系统中的两种当前最主要的可分性解决方案。
It will discuss two main scheme of divisibility in off-line electronic cash system at present.
这不仅是理论研究的需要，也是我国离线电子现金系统广泛应用的必经之路。
It is not only a method for research, but also a requirement to fulfill the extensive application of the off-line electronic cash payment system in our country.
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