Blockchain-Based Autonomous Notarization System Using National eID Card
Blockchain-Based Autonomous Notarization System Using National eID Card
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DOI：
10.1109/access.2022.3199744
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发表时间：
2022
期刊：
影响因子：
3.9
通讯作者：
Shinya Haga;Kazumasa Omote
中科院分区：
文献类型：
--
作者：
Shinya Haga;Kazumasa Omote
近年来，信息通信技术的普及导致了电子政务的出现，即政府服务的电子化替代。据说电子政务与区块链技术兼容，这引发了对其可能性的各种研究。公证是政府的职能之一，特别针对区块链技术的潜在采用进行了审查。然而，由于公证人在公证过程中必须对文件内容进行认证，因此很难用智能合约替代。在本研究中，我们仅关注固定日期公证，并通过将国家电子身份证与公钥基础设施和智能合约相结合，提出了一种完全自动化的公证系统。固定日期是一种公证，允许公证人保证文件存在，无论文件内容的真实性如何。因此，可以用智能合约来替代。具体来说，我们提出的系统会自动验证使用国家 eID 卡签署的电子文档的创建者和文档，并使用信息存储在区块链上时生成的交易收据作为公证证书。签名数据的验证是通过智能合约在区块链内完成的，这消除了对验证机构的需要。我们进一步证明了所提出的方法在日本用例中作为概念证明的有效性。
In recent years, the spread of information and communication technology has led to the emergence of e-government, which is the electronic replacement of government services. E-government is said to be compatible with blockchain technology, which has led to various studies on the possibility. Notarization, one of the functions of the government, has particularly been examined for the potential adoption of blockchain technology. However, because the notary public must authenticate the document’s contents during the notarization process, they have been difficult to replace with smart contracts. In this study, we focus only on fixed date notarizations and propose a fully automated notarization system by combining a national eID card with Public Key Infrastructure and smart contracts. A fixed date is a notarization that allows a notary public to guarantee that a document existed, regardless of the authenticity of the document’s content. Therefore, it can be replaced by a smart contract. Specifically, our proposed system automatically authenticates the creator and the document for electronic documents signed with a national eID card and uses the transaction receipt generated when the information is stored on the blockchain as a certificate of notarization. Verification of the signed data is done inside the blockchain by smart contracts, which eliminates the need for a verification authority. We further demonstrate the effectiveness of the proposed method in a Japanese use case as proof of concept.