NormaChain: A Blockchain-Based Normalized Autonomous Transaction Settlement System for IoT-Based E-Commerce
NormaChain: A Blockchain-Based Normalized Autonomous Transaction Settlement System for IoT-Based E-Commerce
复制标题
DOI：
10.1109/jiot.2018.2877634
复制
发表时间：
2019-06-01
影响因子：
10.6
通讯作者：
Cheng, Xiuzhen
中科院分区：
文献类型：
--
作者：
Liu, Chunchi;Xiao, Yinhao;Cheng, Xiuzhen
基于物联网 (IoT) 的电子商务是一种新的商业模式，依赖于物联网设备上的自主交易管理。基于物联网的电子商务管理系统要求自治、轻量级和合法性。由于区块链是一种能够治理去中心化网络的创新技术，我们采用它来设计物联网电子商务的自治交易管理系统。然而，当前的区块链解决方案（主要是加密货币）存在不可监督性和巨大计算开销的致命缺点，因此无法直接应用于基于物联网的电子商务。在本文中，我们提出了NormaChain，一种基于区块链的规范化自治交易结算系统，用于基于物联网的电子商务。通过设计特殊的三层分片区块链网络，我们可以显着提高交易效率和系统可扩展性。此外，通过设计创新的去中心化公钥可搜索加密方案（带关键词搜索的去中心化公钥加密（PEKS）方案），我们可以揭露违法犯罪交易，实现犯罪溯源。我们新的去中心化 PEKS 方案以密码方式消除了原始 PEKS 方案中对可信中央机构的依赖，并将其扩展为完全去中心化的治理，将监督权平等地分配给各方。更重要的是，通过证明 NormaChain 能够抵御选定的密文攻击和密钥被窃取，我们表明 NormaChain 可以防止合法用户的隐私被银行、监管机构或恶意对手侵犯。最后，我们提供了 NormaChain 系统的设计细节和完整的实现。实验表明，在提供适当的目标非法关键词的情况下，物联网设备的平均每秒交易量约为113笔，监管准确率达到100%。
Internet of Things (IoT)-based E-commerce is a new business model that relies on autonomous transaction management on IoT-devices. The management system toward loT-based E-commerce demands autonomy, lightweight, and legitimacy. As blockchain is an innovative technology that is competent in governing the decentralized network, we adopt it to design the autonomous transaction management system on IoT E-commerce. However, current blockchain solutions, most namely cryptocurrencies, have fatal drawbacks of nonsupervisability and huge computational overhead, and hence cannot be directly applied on IoT-based E-commerce. In this paper, we propose NormaChain, a blockchain-based normalized autonomous transaction settlement system for IoT-based E-commerce. By designing a special three-layer sharding blockchain network, we can significantly increase transaction efficiency and system scalability. Additionally, by designing an innovative decentralized public key searchable encryption scheme (decentralized public key encryption with keyword search (PEKS) scheme), we can uncover illegal and criminal transactions and achieve crime traceability. Our new decentralized PEKS scheme cryptographically eliminates the dependence of a trusted central authority in the original PEKS scheme and instead expands it to a fully decentralized governance, which distributes the supervision power equally among all parties. More importantly, by proving NormaChain is secure against chosen ciphertext attacks and against the stealing of the secret key, we show that NormaChain prevents a legitimate user's privacy from being violated by banks, supervisors or malicious adversaries. Finally, we deliver the NormaChain system with design details and full implementations. Experiments show that the average transaction-per-second on IoT devices is around 113, and the supervision accuracy is 100% when proper target illegal keywords are provided.