基于TPM虚拟单调计数器的电子钱包方案的分析和扩展

Extension of e-wallet payment scheme based on TPM virtual monotonic counter

针对一种基于虚拟单调计数器的电子钱包方案存在的不足,对其进行了扩展,原方案商品原子性无法得到满足,且不能够防止货币消失的问题,即其货币原子性只能得到部分满足。在原方案的基础上,将货物的交换过程考虑进来,扩展后的方案既满足货币原子性,又满足商品原子性,同时能够为顾客提供隐私保护。

An extended scheme of an e-wallet scheme based on TPM virtual monotonic counter was proposed.In the original scheme, the exchange process of goods did not be considered, so it did not meet goods atomic.Also, it just met money atomic partially because it could not prevent the destroy of money, By extending and considering the exchange process of goods, the new scheme met not only goods atomic, but also money atomic.In the meanwhile, it could provide privacy protection for customer.