摘要： 姬东耀等改进了微支付(NMP)方案PayWord，提出了具有较好安全性和公平性的NMP方案。该文在此基础上，给出一种基于自更新哈希链机制的微支付方案。新方案不仅有效解决了恶意透支、时限性等问题，还提高了公平性、安全性和效率。在支付阶段，虽然新方案的存储和通信载荷较NMP增加了80 B，但在10 000份额交易下，前者的节点平均计算效率是后者的125倍。

关键词: 微支付, 哈希链, 自更新, 公平性, 时限性

Abstract: Ji et al improve PayWord protocol and propose micro-payment protocol(NMP), which has better features on security and fairness. Based on Self-Renewal Hash Chain scheme(SRHC), an improved micro-payment scheme is proposed. The analysis shows that the scheme can solve the problems in NMP, and has better features on security, efficiency and fairness. In the payment phase, the storage and communication load of the scheme is 80 B longer than that of NMP, but the PayWords computation efficiency of the former is 125 times as high as that of the latter when the transactions of 10 000 electron shares are accomplished.

Key words: micro-payment, hash chains, self-renewal, fairness, timeliness

中图分类号: 

• TP399