Hiraku Morita

News

2025

• 27 Jan
  Li Quan and I have been awarded collaboration research funding from DIGIT Aarhus University Centre for Digitalisation, Big Data and Data Analytics, 70,000 DKK (~€9,300).

• 24 Jan
  Our paper "MAESTRO: Multi-party AES using Lookup Tables" has been accepted at USENIX Security 2025 held in Seattle, WA in August.

2024

• 18 Nov
  Our paper got accepted at Natural Computing.
  Kazunari Tozawa, Hiraku Morita , Takaaki Mizuki: Single-Shuffle Card-based Protocol with Eight

• Cards per Gate and Its Extensions. Natural Computing: (To appear) 

• 23 Aug
  Our paper "MAESTRO: Multi-party AES using Lookup Tables" is on ePrint now.

• 15-20 July
  I attended PETS in Bristol and presented our work on "Constant-Round Private Decision Tree Evaluation for Secret Shared Data".

• 11 Jun
  I was awarded the small collaboration research funding from DIGIT Aarhus University Centre for Digitalisation, Big Data and Data Analytics, 100,000 DKK (~€13,400) for the second consecutive year. Thank you!

• May-Jun
  I attended Eurocrypt and TPMPC

• 24 Jan
  I presented my current work on secure division protocol at SCIS 2024 in Nagasaki

2023

• 11 Sept
  Our paper has been accepted for PoPETs 2024
  Nan Cheng, Naman Gupta, Aikaterini Mitrokotsa, Hiraku Morita and Kazunari Tozawa, "Constant-Round Private Decision Tree Evaluation for Secret Shared Data" (ePrint)

• 10 Sept
  I will get awarded a small collaboration research funding from DIGIT Aarhus University Centre for Digitalisation, Big Data and Data Analytics, 100,000 DKK (~€13,400)

• 1 Feb
  Our new paper is accepted to UCNC 2023
  Kazunari Tozawa, Hiraku Morita and Takaaki Mizuki, "Single-Shuffle Card-based Protocol with Eight Cards per Gate"  (PDF)

• 15 Jan
  I've moved to Denmark and started working as a joint postdoc at Aarhus University and the University of Copenhagen.

2022

• 18 July
  Our new paper is accepted to ACM CCS 2022.
  "Secure Parallel Computation on Privately Partitioned Data and Applications", Nuttapong Attrapadung, Hiraku Morita, Kazuma Ohara, Jacob Schuldt, Tadanori Teruya, Kazunari Tozawa

• 1 May
  Our paper on MPC x Deep Learning got accepted to PETS 2022  in Sydney, Australia. 
  N. Attrapadung, K. Hamada, D. Ikarashi, R. Kikuchi, T. Matsuda, I. Mishina, H. Morita, J. Schuldt: Adam in Private: Secure and Fast Training of Deep Neural Networks with Adaptive Moment Estimation

• 7 Feb.
  Very grateful that our paper got accepted to AsiaCCS in Nagasaki, Japan. 

N. Attrapadung, H. Morita, K. Ohara, J. Schuldt, K. Tozawa: Memory and Round-Efficient MPC Primitives in the Pre-Processing Model from Unit Vectorization. AsiaCCS 2022 (To appear)

Experience

Postdoc

2023.1- Joint position at  Aarhus University and University of Copenhagen
Hosted by ‪‬Peter Scholl and Christian Igel 

Postdoc
2021.1-2022.12 University of St. Gallen

Postdoc
2017.4-2020.12 AIST
Hosted by Nuttapong Attrapadung  and Goichiro Hanaoka 

AIST Research Trainee
2014.11-2017.3  AIST
Mentor: Goichiro Hanaoka

Education

Ph.D., Engineering
2012-2017, Nagoya University
Supervised by Tetsu Iwata

M.S., Mathematical Science
2009-2011, Nagoya University
Supervised by Ken-ichi Yoshida

M.S., Engineering
2007-2009, Nara Institute of Science and Technology
Supervised by Yuji Matsumoto and Kentaro Inui

 B.S., in Agriculture
2003-2007, Kyoto University
Supervised by Atsuyuki Asami