About Me
- I’m a researcher at NTT Social Informatics Laboratories (formerly NTT Secure Platform Laboratories), NTT Corporation, Japan.
- I joined NTT Corporation in 2012.
- From 2019 to 2020, I was visiting researcher at Ruhr-university Bochum.
- I received my Ph.D. from Kobe University in March 2017 (supervisor: Masakatu Morii).
- The title of my Ph.D. thesis is “Integral Cryptanalysis against Symmetric-Key Cryptosystems.”
- My research area is cryptography. Especially the design and analysis of symmetric-key cryptography.
- Link : [dblp] [google scholar]
- E-mail : todo[dot]yosuke[atmark]gmail[dot]com
Recent Major Activity
- The paper “Side-Channel Linearization Attack on Unrolled Trivium Hardware” was accepted by IACR CiC.
- The paper “General Practical Cryptanalysis of The Sum of Round-Reduced Block Ciphers and ZIP-AES” was accepted by Asiacrypt 2024.
- The paper “Multiple-Tweak Differential Attack Against SCARF” was accepted by Asiacrypt 2024.
- The paper “Key Recovery, Universal Forgery, and Committing Attacks against Revised Rocca: How Finalization Affects Security” was accepted by ToSC 2024 Issue 2.
- The paper “Improving Linear Key Recovery Attacks using Walsh Spectrum Puncturing” was accepted by Eurocrypt 2024.
- The paper “Cryptanalysis of QARMAv2” was accepted by IACR ToSC 2024 Issue 1.
- The paper “Key Committing Security of AEZ and More” was accepted by IACR ToSC 2023 Issue 4.
Please check the page for publication list in detail.
Awards
- Apr. 2024, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, The Young Scientists’ Award.
- Mar. 2023, FSE 2023 Best Papers Award, IACR.
- Sep. 2020, IEICE Fundamentals Review Best Author Award, IEICE
- Aug. 2020, CRYPTO 2020 Best Paper Award, IACR.
- Jun. 2019, IEICE Best Papers Award, IEICE.
- Jan. 2016, SCIS Best Papers Award, SCIS 2015, ISEC, IEICE.
- Aug. 2015, CRYPTO 2015 Best Paper Award, IACR.
- Aug. 2015, CRYPTO 2015 Best Young Researcher Award, IACR.
Program Committee
ArcticCrypt: 2024
ASIACRYPT: 2016, 2018, 2023
CHES: 2021, 2022
CRYPTO: 2023, 2024
Eurocrypt: 2016, 2020, 2024, 2025
FSE: 2018 — 2022, 2024, 2025
Latincrypt: 2019
Selected Areas in Cryptography (SAC): 2019 — 2024
Editorial Board
IACR Transactions on Symmetric Cryptology (ToSC) Mar. 2017 — Feb. 2022, Mar. 2023 — Feb. 2025.
IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES) Jul. 2020 — Jun. 2022.
Design
- 2023 SCARF, Secure Cache Randomization Function
- 2021 Trivium-LE and Triad-LE, Low-Energy Stream Ciphers
- 2021 Sycon v2, Lightweight Cryptographic Permutation, and AEAD
- 2020 Prince v2, Low-Latency Block Cipher
- 2017 Gimli, Cross-Platform Cryptographic Permutation
- 2017 GIFT, Lightweight Block Cipher
- 2014 Minalpher, Authenticated Encryption with Associated Data
Yosuke Todo 