Junichi Tomida

I am a researcher of cryptography at NTT, Japan.

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Education

  • M.S. Informatics, Kyoto University, 2017 (Supervisors: Tatsuaki Okamoto, Masayuki Abe)
  • B.S. Veterinary Medicine, Hokkaido University, 2012

Publications

Conference Papers

2019

  • Tightly Secure Inner Product Functional Encryption: Multi-Input and Function-Hiding Constructions

Junichi Tomida. ASIACRYPT 2019.

  • Strongly Secure Identity-Based Key Exchange with Single Pairing Operation

Junichi Tomida, Atsushi Fujioka, Akira Nagai, Koutarou Suzuki. ESORICS 2019.

2018

  • Unbounded Inner Product Functional Encryption from Bilinear Maps

Junichi Tomida, Katsuyuki Takashima. ASIACRYPT 2018.

  • Full-Hiding (Unbounded) Multi-input Inner Product Functional Encryption from the k-Linear Assumption

Pratish Datta, Tatsuaki Okamoto, Junichi Tomida. PKC 2018.

2016

  • Efficient Functional Encryption for Inner-Product Values with Full-Hiding Security

Junichi Tomida, Masayuki Abe, Tatsuaki Okamoto. ISC 2016.

Invited Talks

  • Unbounded Inner Product Functional Encryption from Bilinear Maps

WCIS 2019

Domestic Workshops

  • 緊密安全な内積関数型暗号

Junichi Tomida. SCIS 2019.

  • (アリティに制限を持たない)関数秘匿複数入力内積関数型暗号

Pratish Datta, Tatsuaki Okamoto, Junichi Tomida. SCIS 2018.

  • より弱い仮定に基づく効率的な完全秘匿性を持つ内積値暗号

Junichi Tomida, Masayuki Abe, Tatsuaki Okamoto. SCIS 2017.

  • Adaptively Secure Functional Encryption for Inner-Product Values

Junichi Tomida, Masayuki Abe, Tatsuaki Okamoto. SCIS 2016.

Awards

  • SCIS 2018 Paper Award