Hiraku Morita
I am a joint postdoctoral fellow of the Cryptography and Security Group at Department of Computer Sciense, Aarhus University and Machine Learning Section at the Department of Computer Sciense, University of Copenhagen. Before joining the teams, I was a postdoc of Cybersecurity group at the School of Computer Science, University of St. Gallen (HSG) and a postdoc at the Advanced Cryptosystems Research Team, AIST, Japan. My research interests are in cryptography, focusing on multi-party computation and privacy-preserving machine learning.
hiraku [at] cs.au.dk
himo [at] di.ku.dk
Interests
Multi-Party Computation (MPC)
Privacy-Preserving Machine Learning
Card-based Cryptography
I'm open to any collaborations!
News
2024
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!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 Tozawa1 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 Estimation7 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
Publications
See my DBLP or Publications.
Language
Japanese (Native)
English (Fluent)
Python (Conversational)