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This article discusses the implementation of the LINear equation-based (LINE) post-quantum cryptosystem to enhance security in 5G networks. It examines the application of the LINE cryptosystem in the 5G-AKA (authentication and key agreement) protocol. The advantages of LINE directional encryption, in terms of quantum security, are compared to those of the finalists in the fourth round of the National Institute of Standards and Technology Key Encapsulation Methods competition. The implementation costs of the LINE cryptosystem are at least twice as low as those of CRYSTALS-Kyber. The practical application of LINE directional encryption offers benefits in terms of scalability, secrecy, and computational heterogeneity.

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New Key Encapsulation Method for Authentication in 5G Network in the Post-quantum Era

  • 会议论文

  • 发表日期：

    2026年

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  • Gennady Khalimov,
  • Xiaoyan Sun,
  • Yevgen Kotukh,
  • Illia Dzhura,
  • Alexandr Wyglinski,
  • Hlib Khivrenko

摘要

This article discusses the implementation of the LINear equation-based (LINE) post-quantum cryptosystem to enhance security in 5G networks. It examines the application of the LINE cryptosystem in the 5G-AKA (authentication and key agreement) protocol. The advantages of LINE directional encryption, in terms of quantum security, are compared to those of the finalists in the fourth round of the National Institute of Standards and Technology Key Encapsulation Methods competition. The implementation costs of the LINE cryptosystem are at least twice as low as those of CRYSTALS-Kyber. The practical application of LINE directional encryption offers benefits in terms of scalability, secrecy, and computational heterogeneity.