I'm a PhD student employed at Cryptography and Security Group, Aarhus University, with Claudio Orlandi and Diego F. Aranha as my supervisors. I previously obtained Master's degree under the supervision of Masayuki Abe, Tatsuaki Okamoto and Mehdi Tibouchi, from Kyoto University, Japan.
My research interests cover cryptanalysis of public key cryptographic algorithms and construction of efficient secure two-/multi-party computation protocols.

Work Experience

1/2019 - present: PhD Fellow, Department of Computer Science, Aarhus University, Denmark.

4/2018 - 12/2018: Research Intern under the supervision of Mehdi Tibouchi, at The Cryptography Research Laboratory, NTT Secure Platform Laboratories, Japan.

9/2017 - 10/2017: Summer Intern at Okamoto Research Laboratory, NTT Secure Platform Laboratories, Japan.

5/2015 - 7/2017: Freelance Software Developer at Richie Oy., Finland.


[C1] Degenerate Fault Attacks on Elliptic Curve Parameters in OpenSSL. [ePrint]
Akira Takahashi and Mehdi Tibouchi.
IEEE EuroS&P 2019. To appear.

[J1] New Bleichenbacher Records: Fault Attacks on qDSA Signatures. [ePrint] [code]
Akira Takahashi, Mehdi Tibouchi, and Masayuki Abe.
IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), Volume 2018, Issue 3. pp.331-371.


[T2] New Bleichenbacher Records: Fault Attacks on qDSA Signatures.
CHES 2018, Nederlands. September 2018. [slides] [video]
Seminar at ALMASTY Group, LIP6, Sorbonne Université, France. September 2018.
Tokyo Crypto Day, Japan. October 2018.

[T1] Application of the Singular Curve Point Decompression Attack to the Bitcoin Curve.
IEICE ISEC. July 2018.


[D2] A Study on Attacks against Nonces in Schnorr-like Signatures. [PDF]
Master's thesis. Kyoto University.

[D1] Efficient Decentralized Routing in Friend-to-friend Networks.
Bachelor's thesis. Kyoto University.


IACR ePrint Archive
Abe-Tibouchi Lab., Kyoto University


Wikipedia: Unusual articles.
Øresund Space Collective
Hidria Spacefolk
Ozric Tentacles