摘要
与3G/4G相比,5G网络进行了许多创新与变革,其中最突出的是:更泛在的接入支持、更灵活的控制和转发机制、更友好的数据共享方式.然而,数据共享过程中的隐私保护问题日益突出.提出基于区块链分片技术的数字内容安全共享模型.利用区块链的可追溯、防篡改特点,确保数据共享过程中的安全性.利用区块链的分片技术和星际文件系统(interplanetary file system,IPFS)存储技术,在5G这种低时延、高并发的网络中,确保数据的访问效率.利用附带时间的基于密文策略属性加密技术,可以实现对数据的细粒度访问控制,能够实现较好的隐私保护.最后通过方案对比分析证明了所提模型的隐私性和可扩展性.
Compared to 3G/4G,5G networks have made many innovations and changes,the most notably of which are more general access support, more flexible control and forwarding mechanisms,and a more user-friendly way of sharing data.However,privacy protection issues in data sharing are increasingly prominent.In this paper,a digital content security sharing model for 5G application based on blockchain shading technology is proposed.The traceability and tamperproof characteristics of blockchain are used to ensure the security of data sharing process.The blockchain shading technology and interplanetary file system(IPFS)storage technology are used to ensure data access efficiency in low-latency,high-synth 5G networks.The fine-grained access control of data and better privacy protection are achieved by using time-based ciphertext-policy attribute-based encryption(CP-ABE)technology.Finally,the privacy and scalability of the proposed model are proved through the comparative analysis of the schemes.
作者
陈烨
王永利
Chen Ye;Wang Yongli(School of Computer Science and Engineering,Nanjing University of Science and Technology,Nanjing 210014)
出处
《信息安全研究》
2022年第1期43-48,共6页
Journal of Information Security Research
基金
国家自然科学基金项目(61941113)。
