Introduction of Evangelists

Associate Distinguished Researcher Fuyuki Kitagawa
  • Associate Distinguished Researcher

    Fuyuki Kitagawa

    Research on public key cryptography and design of quantum cryptographic primitives.
    We study the theory of public key encryption schemes and more advanced ones. We are also interested in the intersection between cryptography and quantum information such as design of new cryptopraphic primitives utilying the power of quantum information. Especially, we study cryptographic primitives based on the quantum no-cloning theorem such as quantum money and quanum copy protection.

    Awards

  • 2015 IEICE SCIS paper award
  • 2020 Tokyo Institute of Technology Seiichi Tejima Reserach Awards

    • Papers

    [ Major Papers ]

  • Fuyuki Kitagawa, Ryo Nishimaki, and Keisuke Tanaka, Obfustopia Built on Secret-Key Functional Encryption, EUROCRYPT 2018.
  • Fuyuki Kitagawa and Keisuke Tanaka, A Framework for Achieving KDM-CCA Secure Public-Key Encryption, ASIACRYPT 2018.
  • Fuyuki Kitagawa, Takahiro Matsuda, and Keisuke Tanaka, CCA Security and Trapdoor Functions via Key-Dependent-Message Security, CRYPTO 2019.
  • Fuyuki Kitagawa and Takahiro Matsuda, CPA-to-CCA Transformation for KDM Security, TCC 2019.
  • Fuyuki Kitagawa and Takahiro Matsuda, Circular Security Is Complete for KDM Security, ASIACRYPT 2020.
  • Fuyuki Kitagawa, Ryo Nishimaki, and Takashi Yamakawa, Secure Software Leasing from Standard Assumptions, TCC 2021.
  • Fuyuki Kitagawa and Ryo Nishimaki, Watermarking PRFs Against Quantum Adversaries, EUROCRYPT 2022.
  • Fuyuki Kitagawa and Ryo Nishimaki, Functional Encryption with Secure Key Leasing, ASIACRYPT 2022.
  • Shweta Agrawal, Fuyuki Kitagawa, Ryo Nishimaki, Shota Yamada, and Takashi Yamakawa, Public Key Encryption with Secure Key Leasing, EUROCRYPT 2023.

    • Papers List

    Keywords

  • Public key encryption, Chosen ciphertext security, functional encryption, quantum information, quantum money, quanum copy protection

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