基于区块链的安全微支付协议

Secure Micro Payment Protocol Based on Blockchain

摘要: 原有的基于PayWord的微支付方案存在第三方经纪人掌握支付双方信息并与某一方合谋攻击另一方的问题，使支付的安全性得不到保证。本文结合双支付链思想，基于区块链提出了一种新的微支付协议，用智能合约代替原有方案中的第三方经纪人，实现了去中心化，保证了支付的安全性；利用双支付链，支持多个元支付一次性执行，提高了支付的效率，同时设计了仲裁子协议，保证方案的公平性。通过对协议的分析表明，该协议不仅可以保证支付的安全性、公平性，同时具有较高的支付效率。

Abstract: The original micro payment scheme based on PayWord has the problem that the third-party broker grasps the information of both parties and colludes with one party to attack the other party, so that the security of payment cannot be guaranteed. Combined with the idea of double payment chain and based on blockchain, this paper proposes a new micro payment protocol, which uses smart contract to replace the third-party broker in the original scheme, realizes decentralization and ensures the security of payment; the double payment chain is used to support the one-time execution of multiple unit payments, which improves the efficiency of payment. At the same time, the arbitration sub protocol is designed to ensure the fairness of the scheme. The analysis of the protocol shows that the protocol can not only ensure the security and fairness of payment, but also has high payment efficiency.