BC-AKA: Blockchain based asymmetric authentication and key agreement protocol for distributed 5G core network

【Author】 Gao, Zhen; Zhang, Dongbin; Zhang, Jiuzhi; Liu, Zhao; Liu, Haoming; Zhao, Ming

【Source】CHINA COMMUNICATIONS

【影响因子】3.170

【Abstract】Secure authentication between user equipment and 5G core network is a critical issue for 5G system. However, the traditional authentication protocol 5G-AKA and the centralized key database are at risk of several security problems, e.g. key leakage, impersonation attack, MitM attack and single point of failure. In this paper, a blockchain based asymmetric authentication and key agreement protocol (BC-AKA) is proposed for distributed 5G core network. In particular, the key used in the authentication process is replaced from a symmetric key to an asymmetric key, and the database used to store keys in conventional 5G core network is replaced with a blockchain network. A proof of concept system for distributed 5G core network is built based on Ethereum and ECC-Secp256k1, and the efficiency and effectiveness of the proposed scheme are verified by the experiment results.

【Keywords】Authentication; Blockchains; Encryption; 5G mobile communication; Cryptography; Security; Protocols; blockchain; asymmetric authentication; key agreement; distributed core network; 5G

【发表时间】2022 JUN

【收录时间】2022-07-10

【文献类型】理论性文章

【主题类别】

区块链技术-协同技术-5G