認証と鍵共有暗号技術Cryptographic Authentication and Key Exchange

IoT/CPSを含むあらゆる通信において、エンティティ認証と鍵共有は必要不可欠な暗号技術であります。その中でも、認証付鍵共有技術を使えば、各エンティティはインターネットのような公開ネットワークを通じて目に見えない相手を正しく認証し、また安全な通信路を構築するためのセッション鍵が共有できます。この技術はすでにHTTPS, VPN, TLS, SSHなど実世界で幅広く使われています。

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本研究では、エンティティ認証や鍵共有（鍵管理）等の暗号技術について、安全性と効率性だけではなく様々な利用や応用などにおける研究開発を行い、またそれらの国際標準化を推進しています。

研究成果リスト

  • SeongHan Shin, “Leakage-Resilient and Proactive Authenticated Key Exchange (LRP-AKE), Reconsidered,” IEICE Transactions on Information and Systems (To appear)
  • ISO/IEC 11770-4:2017/Amd 2:2021 (International Standard)
  • SeongHan Shin, “Authenticated Key Exchange from Weak Secrets,” Tutorial Talk, WISA 2020
  • SeongHan Shin, Shota Yamada, Goichiro Hanaoka, Yusuke Ishida, Atsushi Kunii, Junichi Oketani, Shimpei Kunii, and Kiyoshi Tomomura, “An Extended CTRT for AES-256,” WISA 2019, LNCS 11897, pp. 79-91, 2019 (WISA 2019 Best Paper Premium Award)
  • SeongHan Shin and Kazukuni Kobara, “How to Preserve User Anonymity in Password-Based Anonymous Authentication Scheme,” IEICE Transactions on Information and Systems, Vol. E101-D, No. 3, pp. 803-807, 2018
  • ISO/IEC 11770-4:2017-11 (International Standard)
  • ISO/IEC 20009-4:2017-08 (International Standard)
  • SeongHan Shin and Kazukuni Kobara, “Security Analysis of Password-Authenticated Key Retrieval,” IEEE Transactions on Dependable and Secure Computing, Vol. 14, No. 5, pp. 573-576, 2017
  • SeongHan Shin and Kazukuni Kobara, “Simple Anonymous Password-Based Authenticated Key Exchange (SAPAKE), Reconsidered,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E100-A, No. 2, pp. 639-652, 2017
  • SeongHan Shin, Kazukuni Kobara, Chia-Chuan Chuang, and Weicheng Huang, “A Security Framework for MQTT,” IEEE International Workshop on Cyber-Physical Systems Security, 2016
  • SeongHan Shin, Kazukuni Kobara, and Hideki Imai, “On Finding Secure Domain Parameters Resistant to Cheon's Algorithm,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E98-A, No. 12, pp. 2456-2470, 2015
  • SeongHan Shin and Kazukuni Kobara, “On Unlinkability of Password-Based Anonymous Authentication,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E98-A, No. 6, pp. 1320-1324, 2015