| 姚前,张大伟.区块链系统中的身份管理技术研究综述.软件学报,0,(0):34-0 |
| 区块链系统中的身份管理技术研究综述 |
| Survey on Identity Management in Blockchain |
| 投稿时间：2020-08-13 修订日期：2020-11-10 |
| DOI：10.13328/j.cnki.jos.006309 |
| 中文关键词: 区块链 密码货币 身份管理 隐私保护 匿名性 不可链接性 |
| 英文关键词:blockchain cryptocurrency identity management privacy protection anonymity unlinkability |
| 基金项目:国家重点研发计划项目（2020YFB2103800）；国家自然科学基金（U1736114） |
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| 中文摘要: |
| 区块链技术是一种通过块链式结构、共识算法和智能合约来生成、存储、操作和验证数据的新型分布式基础架构和计算范式，其所构建的新型信任机制有助于推动互联网技术由信息互联网向价值互联网的转化.由于区块链中的账本数据采用公开交易记录、多节点共识确认的方式进行存储和验证，因此对系统中的身份管理及隐私保护提出了极大的挑战.本文首先分析了区块链系统交易模型的特点及其与传统中心化系统在身份认证、数据存储和交易确认方面的不同，阐述了区块链系统中身份管理技术涵盖的主要内容、关键问题及安全挑战；其次，从身份标识、身份认证和身份隐藏三个方面比较分析了目前主流区块链平台中身份管理和隐私保护的不同实现技术；最后，分析了现有区块链系统中身份管理的不足并对未来的研究方向进行了展望. |
| 英文摘要: |
| Blockchain technology is a new distributed infrastructure and computation paradigm that generates, stores, manipulates, and validates data through chain structures, consensus algorithms, and smart contracts. The new trust mechanism is built to promote the transformation of Internet technology from Internet of information to Internet of value. Since the data in the blockchain is stored and verified by means of public transaction records and multi-peer consensus confirmation, it poses a great challenge to the transaction privacy protection in the system. This paper first analyzes the characteristics of the blockchain system transaction model and its differences from the traditional centralized system in identity authentication, data storage and transaction confirmation, and describes the main contents, key issues and security challenges of identity management in blockchain. Secondly, we analyze the different implementation technologies of identity management and privacy protection in the current mainstream blockchain platform from three aspects of identity identification, identity authentication and identity hiding. Finally, we summarize the shortcomings of the existing blockchain identity management technology and propose the future research directions. |
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