【Author】
He, Guobiao; Su, Wei; Gao, Shuai; Liu, Ningchun; Das, Sajal K.
【Source】IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT
【Abstract】Multi-domain networking slice orchestration is an essential technology for the programmable and cloud-native 5G network. However, existing research solutions are either based on the impractical assumption that operators will reveal all the private network information or time-consuming secure multi-party computation which is only applicable to limited computation scenarios. To provide agile and privacy-preserving end-to-end network slice orchestration services, this paper proposes NetChain, a multi-domain network slice orchestration architecture based on blockchain and trusted execution environment. Correspondingly, we design a novel consensus algorithm CoNet to ensure the strong security, scalability, and information consistency of NetChain. In addition, a bilateral evaluation mechanism based on game theory is proposed to guarantee fairness and Quality of Experience by suppressing the malicious behaviors during multi-domain network slice orchestration. Finally, the prototype of NetChain is implemented and evaluated on the Microsoft Azure Cloud with confidential computing. Experiment results show that NetChain has good performance and security under the premise of privacy-preserving.
【Keywords】Security; Computer architecture; Privacy; Scalability; Blockchains; Faces; Consensus algorithm; Multi-domain network slicing; privacy-preserving; blockchain; TEE
【标题】NetChain：支持区块链的隐私保护多域网络切片编排架构
【摘要】多域网络切片编排是可编程、云原生的 5G 网络必不可少的技术。然而，现有的研究解决方案要么基于运营商将揭示所有私有网络信息的不切实际假设，要么基于仅适用于有限计算场景的耗时的安全多方计算。为提供敏捷、隐私保护的端到端网络切片编排服务，本文提出了基于区块链和可信执行环境的多域网络切片编排架构NetChain。相应地，我们设计了一种新颖的共识算法 CoNet，以保证 NetChain 强大的安全性、可扩展性和信息一致性。此外，提出了一种基于博弈论的双边评估机制，通过抑制多域网络切片编排过程中的恶意行为来保证公平性和体验质量。最后，NetChain 的原型在微软 Azure Cloud 上实现并进行了保密计算的评估。实验结果表明，NetChain 在隐私保护的前提下具有良好的性能和安全性。
【关键词】安全;计算机架构;隐私;可扩展性；区块链；面孔；共识算法；多域网络切片；隐私保护；区块链；球座
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