区块链技术:应用及问题  

Blockchain:applications and problems

作　　者：翟社平 段宏宇 李兆兆 高山 李婧 ZHAI Sheping, DUAN Hongyu, LI Zhaozhao, GAO Shan, LI Jing(School of Computer Science and Technology, Xi＇an University of Posts and Telecommunications, Xi＇an 710121, China)

机构地区：[1]西安邮电大学计算机学院,陕西西安710121

出　　处：《西安邮电大学学报》2018年第1期1-13,共13页Journal of Xi’an University of Posts and Telecommunications

基　　金：陕西省自然科学基金资助项目(2012JM8044);工业和信息化部通信软科学项目(2017-R-22;2018-R-26);陕西省社会科学基金资助项目(2016N008);陕西省教育厅科学研究计划资助项目(17JK0710);西安市社会科学规划基金资助项目(17X63);西安邮电大学研究生创新基金资助项目(CXL2016-13;CXJJ2017006)

摘　　要：区块链技术使用分布式存储、P2P网络、共识机制、非对称加密和智能合约等关键核心技术,在不可信环境中,建立起一种信息与价值传递交换机制,以保障数据的一致性和完整性,是构建未来价值互联网的基石。区块链技术具有去中心化、安全可靠和公开透明的特点,这使其在点对点交易、文件存储、健康医疗等场景中得到广泛应用。但是,区块链技术依旧存在交易吞吐量低、用户信息和交易数据隐私易泄露以及加密算法安全局限等问题,在其发展和应用过程中亟待解决。作为一项新兴技术,区块链有广阔的发展前景,有望改变互联网治理模式,推动互联网成为新型信用基础设施。Blockchain technology uses key core technologies such as distributed storage,P2 Pnetwork,consensus mechanism,asymmetric encryption and smart contract,to establish a reliable transfer exchange mechanism for information and value in an untrusted environment,which ensures the consistency and integrity of the data and lays a foundation for the construction of the future value Internet.The blockchain technology is characterized by decentralization,security,reliability and transparency,which makes it widely used in point-to-point transactions,file storage,health care and other scenarios.However,there are still some problems in blockchain technology,such as low transaction throughput,easy disclosure of user information and transaction data privacy,and security limitations of encryption algorithms,which are urgently needed to be solved in the process of its development and application.As a new technology,blockchain has a broad development prospect,which is expected to change the Internet governance model and promote the Internet to become a new type of credit infrastructure.

关 键 词：区块链 去中心化 分布式存储 共识机制 价值互联网 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]