论文标题
使用区块链和零知识证明的木材可追溯性系统
Wood traceability system using blockchain and zero-knowledge proof
论文作者
论文摘要
本研究中提出的系统使用零知识证明（ZKP）来验证公共区块链中记录的木材的可追溯性。伍德是几个州的副产品，从站立的树木到原木，木材和木制产品（以下简称``木材''）。使用区块链进行记录保存的优势在于，参与者可以无限制地自行决定自行记录信息。但是，区块链的开放性可能会使恶意的第三方引入虚假信息。在这项研究中，我们采用ZKP和近场通信（NFC）芯片来消除虚假信息引入的可能性。 ZKP用于证明/验证木材对象状态的变化，与该状态相关的唯一非CE被加密并记录在NFC芯片上。 nonce被隐藏，木材对象的ID被定义为该nonce的哈希值。我们开发了一种基于Android应用程序和以太坊智能合约的原型系统。我们确认可以使用原型系统进行木材可追溯性和验证。
The system proposed in this study uses zero-knowledge proof (ZKP) to verify the traceability of wood recorded in a public blockchain. Wood is a byproduct of several states, ranging from standing trees to logs, lumber, and wood products (hereinafter ``wood objects''). The advantage of using the blockchain for record keeping is that participants can freely record the information at their discretion, without any restrictions. However, the openness of the blockchain may allow a malicious third party to introduce disinformation. In this study, we employ ZKP and near-field communication (NFC) chips to eliminate the possibility of disinformation introduction. ZKP is used to prove/validate changes in the state of wood objects, and the unique nonce associated with that state is encrypted and recorded on an NFC chip. The nonce is concealed and id of the wood object is defined as hash value of this nonce. We developed a prototype system based on an Android application and an Ethereum smart contract. We confirm that wood traceability and verification can be performed using the prototype system.
