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2021

• Our paper ''Oblivious Linear Group Actions and Applications'' got accepted at ACM CCS 2021. This work is done with N. Attrapadung, G. Hanaoaka, T. Matsuda, K. Ohara, J. Schuldt, T. Teruya, and K. Tozawa.

• I've moved to the University of St. Gallen in January. My new email address is hiraku.morita@unisg.ch

Before 2021

• Our paper "Constant-Round Client-Aided Two-Server Secure Comparison Protocol and Its Applications" has been accepted for publication in IEICE Special Section on Cryptography and Information Security Vol.E103-A, No.01, Jan. 2020.

• Our paper "Client-Aided Two-party Secure Interval Test Protocol" has been accepted for presentation and publication in LNCS at CANS 2019.

• I was awarded the Tsujii Shigeo security paper award (http://www.jssm.net/wp/?page_id=3795 ).

• Our following paper got accepted to ESORICS 2018

  • Hiraku Morita, Nuttapong Attrapadung, Tadanori Teruya, Satsuya Ohata, Koji Nuida, Goichiro Hanaoka: Constant-Round Client-Aided Secure Comparison Protocol. ESORICS (2) 2018: 395-415

• Our following papers got accepted to ISITA 2018

  • Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Shota Yamada, Koji Nuida, Goichiro Hanaoka: Tree-based Secure Comparison of Secret Shared Data. ISITA 2018 (to appear)

  • Hiraku Morita, Nuttapong Attrapadung, Satsuya Ohata, Koji Nuida, Shota Yamada, Kana Shimizu, Goichiro Hanaoka, Kiyoshi Asai: Secure Division Protocol and Applications to Privacy-preserving Chi-squared Tests.  ISITA 2018 (to appear)

  • Satsuya Ohata, Hiraku Morita, Goichiro Hanaoka: Accuracy/Efficiency Trade-Off for Privacy-Preserving Division Protocol. ISITA 2018 (to appear)