基于区块链的可信学位查询系统的关键技术实现

发布时间：2018-11-17 18:03

【摘要】：在全球经济化浪潮下,国际竞争日益激烈。科技实力成为一个国家的发展重点。这就导致拥有创新意识和创新能力的高学历人才备受关注。一份高学位文凭能够带来的利益可想而知,以至于国内外频频出现学位造假的现象。随着全国各大高校的招生规模的扩大,高校毕业生的数量急剧上升。庞大的毕业生数量也使得学位信息的查询验证难度上升。目前,我国实行统一的电子注册机制,由"学信网"来负责运行和维护。但是学位和学历造假的现象依旧出现。随着新兴技术"区块链"的出现,其具有的去中心化,去信任化特性颇受关注。本文利用区块链在数据安全方面的优异表现设计了一种基于区块链技术的可信学位查询系统,并对其中的关键技术进行设计和实现。本文首先参考安全稳定运行的比特币交易系统设计系统底层的P2P网络;然后根据实际环境对已有共识机制进行修改,使其满足学位发布环境的特定应用需求;接着设计了系统中的交易和区块等数据的结构;根据相关实际规定,提出了一个有益于共享的学位数据表示规范;最后根据REST原则,设计了一个RESTful学位查询验证接口,以提供更好的可拓展性。本文利用Python语言实现了系统中的关键技术,利用实验室服务器代替实际节点搭建了一个模拟的区块链网络。接着在本文搭建的模拟区块链网络中对系统进行测试运行。运行结果表明底层的区块链层能够初步完成设计的功能;在上层界面的操作也能与底层、与用户进行交互,完成学生注册,学位发布以及学位召回操作。本文设计实现的学位数据查询接口能够对合规的学位查询请求进行响应并取得区块链上相应的学位数据。
[Abstract]:Under the tide of global economy, the international competition is increasingly fierce. Scientific and technological strength has become the focus of a country's development. This leads to the awareness of innovation and innovative ability of high-educated talents have been concerned. A high-degree diploma can bring benefits can be imagined, so that the phenomenon of frequent degree fraud at home and abroad. With the expansion of the enrollment of universities in China, the number of college graduates has risen sharply. The large number of graduates also makes it more difficult to check and verify degree information. At present, our country implements the unified electronic registration mechanism, which is operated and maintained by Xuexin Network. But the fake degrees and academic qualifications still appear. With the emergence of emerging technology, block chain has the characteristics of decentralization and distrust. In this paper, a trusted degree query system based on block chain technology is designed based on the excellent performance of block chain in data security, and the key technologies are designed and implemented. In this paper, we first refer to the secure and stable Bitcoin trading system to design the P2P network at the bottom of the system, and then modify the existing consensus mechanism according to the actual environment to make it meet the specific application requirements of the degree publishing environment. Secondly, the paper designs the structure of transaction and block data in the system, and puts forward a specification of degree data representation which is beneficial to the sharing according to the relevant practical regulations. Finally, according to REST principle, a RESTful degree query verification interface is designed to provide better scalability. In this paper, the key technology of the system is realized by using Python language, and a simulated block chain network is built by using the laboratory server instead of the actual node. Then the system is tested and run in the simulated block chain network built in this paper. The running results show that the bottom layer of the block chain layer can perform the function of the design initially, and the operation of the upper interface can also interact with the bottom layer, and complete the student registration, degree release and degree recall operation. The degree data query interface designed in this paper can respond to the compliance degree query request and obtain the corresponding degree data on the block chain.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.13

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