Category
2025.12
A paper by Professor Isobe has been accepted for publication in the International Association for Cryptologic Research’s journal IACR Communications in Cryptology (CIC).
Kazuhiko Minematsu, Tomoyasu Suzaki, Mostafizar Rahman, Sahiba Suryawanshi, Takanori Isobe, "MSX: Lightweight Block Ciphers for Microcontrollers with High-assurance against Differential and Linear Attacks"
2025.12
A paper by Professor Isobe has been accepted for publication in the International Association for Cryptologic Research’s journal IACR Communications in Cryptology (CIC).
Sajani Kundu, Avik Chakraborti, Shibam Ghosh and Takanori Isobe, "EWEMrl: A White-Box Secure Cipher with Longevity"
2025.11
A paper by alumnus Nakata, Specially Appointed Researcher Ishikawa, Guest Researcher Sakamoto, Guest Associate Professor Ito, and Professor Isobe has been accepted for publication in the International Association for Cryptologic Research's journal Transactions on Symmetric Cryptology (ToSC) 2025.
Subhadeep Banik, Tatsuya Ishikawa, Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu, Kazuma Nakata, Mostafizar Rahman and Kosei Sakamoto, "Dialga: A Family of Low-Latency Tweakable Block Ciphers using Multiple Linear Layers"
2025.09
A paper by D1 student Kimura, Guest Associate Professor Ito and Professor Isobe has been accepted for publication in the international conference ACSAC 2025.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu and Takanori Isobe, "Gravity of the Situation: Security Analysis on Rocket.Chat E2EE"
2025.09
A paper by D1 student Shiraya, Specially Appointed Researcher Ishikawa, Specially Appointed Researcher Tanaka, Guest Researcher Sakamoto, Guest Associate Professor Ito, and Professor Isobe has been accepted for publication in the International Association for Cryptologic Research's journal IACR Communications in Cryptology 2025.
Takuro Shiraya, Subhadeep Banik, Tatsuya Ishikawa, Ryoma Ito, Mostafizar Rahman, Kosei Sakamoto, Atsushi Tanaka, Shion Utsumi and Takanori Isobe, "Exploring SHA Instructions and Its Application to AES-based Schemes"
2025.08
D1 student Kimura delivered the following talk at Black Hat USA 2025 Briefings, an industry-focused international cybersecurity conference held in Las Vegas. (This year’s Black Hat USA received 1,143 submissions and accepted 93, making it the most competitive edition to date with an acceptance ratio of over 12 to 1.)
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki and Takanori Isobe, "Not Sealed: Practical Attacks on Nostr, a Decentralized Censorship-Resistant Protocol" [slide deck]
2025.08
A paper by D1 student Taka, Guest Researcher Sakamoto, Guest Associate Professor Ito, and Professor Isobe has been accepted for publication in the International Association for Cryptologic Research's journal Transactions on Symmetric Cryptology (ToSC) 2025.
Kazuma Taka, Kosei Sakamoto, Ryoma Ito, Rentaro Shiba, Shion Utsumi and Takanori Isobe, "Divide-and-Conquer SAT for Exploring Optimal Differential and Linear Characteristics and Its Applications"
2025.07
A paper by M2 student Fujita and Assistant Professor Yamashita has been accepted for the international conference ProvSec 2025.
Yuuki Fujita, Keisuke Hara, Kyosuke Yamashita, "Claimable Multi-Designated Verifier Signature"
2025.07
M2 student Kawakami and M2 student Sasaki presented the following paper at the international conference ACISP 2025 held in Wollongong, Australia.
Shoma Kawakami, Kazuma Taka, Atsushi Tanaka, Tatsuya Ishikawa and Takanori Isobe, "Strengthening Key Scheduling of AES-256 with Minimal Software Modifications" Kosuke Sasaki, Rikuto Kurahara, Kosei Sakamoto and Takanori Isobe, "Forgery Attacks on SipHash"
2025.07
D1 student Kimura presented the following paper at the international conference IEEE Euro S&P 2025 held in Venice, Italy.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki and Takanori Isobe, "Not in The Prophecies: Practical Attacks on Nostr"