VC Chain:联盟式音视频版权区块链系统  

VC Chain:An alliance audio-video copyright blockchain system

作　　者：陈子豪 李强 甘俊 张超 黎祖睿 CHEN Zi-hao;LI Qiang;GAN Jun;ZHANG Chao;LI Zu-rui(College of Computer(Software),Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学计算机学院(软件学院)

出　　处：《计算机工程与科学》2019年第11期1939-1948,共10页Computer Engineering & Science

基　　金：四川省科技厅重点项目(2018GZ0104,2018GZ0105)

摘　　要：随着音视频产业的飞速发展,音视频作品的版权保护越来越受到人们的关注。传统数字版权系统的中心化管理导致的版权数据易泄露、易被篡改等弊端成为音视频版权保护的难题。在出现侵权和版权纠纷时如何利用技术手段确权成为问题的关键。为此,提出一种基于改进实用拜占庭容错算法(PBFT)的联盟式音视频版权区块链系统(VC Chain)。该系统防止了版权数据泄露或被恶意篡改,利用密码学技术提供更加可靠的数字版权确权与溯源过程,提高数字版权管理的安全性。实验结果表明,改进后的新共识算法使系统在共识速度与数据通信次数方面得到了优化。最后,指出了数字版权管理面临的问题,并给出了该系统针对这些问题的解决方案。With the rapid development of the audio-video industry,the copyright protection of audio-video productions has attracted more and more attentions.The centralized management of the traditional digital copyright system leads to the disadvantages of easy disclosure and tampering of copyright data,which becomes a difficult problem of audio-video copyright protection.How to use technologies to determine the copyright in the case of infringement and copyright disputes becomes the key problem.To solve this problem,an alliance audio-video copyright blockchain system(VC Chain)based on the improved PBFT consensus algorithm is proposed.The system prevents data leakage or malicious tampering,and provides a more reliable process of digital copyright confirmation and tracing by cryptography technology,which improves the security of audio-video digital copyright.The experimental results show that the new consensus algorithm optimizes the system in terms of consensus speed and data communication times.Finally,some problems of digital copyright management are pointed out and their corresponding solutions are given.

关 键 词：区块链 数字版权管理 共识机制 版权保护 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]