Ryoma Ito

50 papers A* 1A 2C 1Misc 7Journal 34Unranked 5
YearRankTypeTitle / Venue / Authors
2025 J jnl
Dialga: A Family of Low-Latency Tweakable Block Ciphers Using Multiple Linear Layers.
IACR Trans. Symmetric Cryptol.
Subhadeep Banik, Tatsuya Ishikawa, Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu, Kazuma Nakata, Mostafizar Rahman, Kosei Sakamoto
2025 J jnl
Divide-and-Conquer SAT for Exploring Optimal Differential and Linear Characteristics and Its Applications.
IACR Trans. Symmetric Cryptol.
Kazuma Taka, Kosei Sakamoto, Ryoma Ito, Rentaro Shiba, Shion Utsumi, Takanori Isobe
2025 J jnl
Exploring SHA Instructions and Its Application to AES-based Schemes.
IACR Commun. Cryptol.
Takuro Shiraya, Subhadeep Banik, Tatsuya Ishikawa, Ryoma Ito, Mostafizar Rahman, Kosei Sakamoto, Atsushi Tanaka, Shion Utsumi, Takanori Isobe
2025 A conf
Gravity of the Situation: Security Analysis on Rocket.Chat E2EE.
ACSAC
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Takanori Isobe
2025 J jnl
Gravity of the Situation:Security Analysis on Rocket.Chat E2EE.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Takanori Isobe
2025 A conf
Not in The Prophecies: Practical Attacks on Nostr.
EuroS&P
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki, Takanori Isobe
2025 J jnl
Not in The Prophecies: Practical Attacks on Nostr.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Ryoma Ito, Kazuhiko Minematsu, Shogo Shiraki, Takanori Isobe
2025 J jnl
On the effects of neural network-based output prediction attacks on the design of symmetric-key ciphers.
J. Inf. Secur. Appl.
Hayato Watanabe, Ryoma Ito, Toshihiro Ohigashi
2025 J jnl
Parallel SAT framework to find clustering of differential characteristics and its applications.
J. Inf. Secur. Appl.
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2025 J jnl
Security analysis of SFrame.
J. Inf. Secur. Appl.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2024 — conf
Key Collisions on AES and Its Applications.
ASIACRYPT (7)
Kodai Taiyama, Kosei Sakamoto, Ryoma Ito, Kazuma Taka, Takanori Isobe
2024 J jnl
Key Collisions on AES and Its Applications.
IACR Cryptol. ePrint Arch.
Kodai Taiyama, Kosei Sakamoto, Ryoma Ito, Kazuma Taka, Takanori Isobe
2024 — conf
On the Effects of Neural Network-Based Output Prediction Attacks on the Design of Symmetric-Key Ciphers.
CSCML
Hayato Watanabe, Ryoma Ito, Toshihiro Ohigashi
2024 J jnl
On the Effects of Neural Network-based Output Prediction Attacks on the Design of Symmetric-key Ciphers.
IACR Cryptol. ePrint Arch.
Hayato Watanabe, Ryoma Ito, Toshihiro Ohigashi
2023 J jnl
A Deeper Look into Deep Learning-based Output Prediction Attacks Using Weak SPN Block Ciphers.
J. Inf. Process.
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2023 J jnl
Areion: Highly-Efficient Permutations and Its Applications (Extended Version).
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
2023 J jnl
Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input.
IACR Trans. Cryptogr. Hardw. Embed. Syst.
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
2023 J jnl
Cryptanalysis on End-to-End Encryption Schemes of Communication Tools and Its Research Trend.
J. Inf. Process.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2023 J jnl
Key Committing Security of AEZ and More.
IACR Trans. Symmetric Cryptol.
Yu Long Chen, Antonio Flórez-Gutiérrez, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Minematsu, Nicky Mouha, Yusuke Naito, Ferdinand Sibleyras, Yosuke Todo
2023 J jnl
PNB Based Differential Cryptanalysis of Salsa20 and ChaCha.
IEICE Trans. Inf. Syst.
Nasratullah Ghafoori, Atsuko Miyaji, Ryoma Ito, Shotaro Miyashita
2023 Misc conf
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications.
SAC
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2023 J jnl
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications.
IACR Cryptol. ePrint Arch.
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
2022 J jnl
Cryptanalysis of Rocca and Feasibility of Its Security Claim.
IACR Trans. Symmetric Cryptol.
Akinori Hosoyamada, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Minematsu, Ferdinand Sibleyras, Yosuke Todo
2022 J jnl
Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi.
J. Inf. Secur. Appl.
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2022 J jnl
New Cryptanalysis of ZUC-256 Initialization Using Modular Differences.
IACR Trans. Symmetric Cryptol.
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
2022 — conf
Output Prediction Attacks on Block Ciphers Using Deep Learning.
ACNS Workshops
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2022 Misc conf
PNB-Focused Differential Cryptanalysis of ChaCha Stream Cipher.
ACISP
Shotaro Miyashita, Ryoma Ito, Atsuko Miyaji
2022 — conf
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption.
ICEIS (2)
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
2021 J jnl
Bit-wise Cryptanalysis on AND-RX Permutation Friet-PC.
IACR Cryptol. ePrint Arch.
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
2021 J jnl
Bit-wise cryptanalysis on AND-RX permutation Friet-PC.
J. Inf. Secur. Appl.
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
2021 Misc conf
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V.
ACISP
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2021 J jnl
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V.
IACR Cryptol. ePrint Arch.
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
2021 J jnl
Finding Practical Distinguishers for ZUC-256 Using Modular Differences.
IACR Cryptol. ePrint Arch.
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
2021 J jnl
New Iterated RC4 Key Correlations and their Application to Plaintext Recovery on WPA-TKIP.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryoma Ito, Atsuko Miyaji
2021 J jnl
Output Prediction Attacks on SPN Block Ciphers using Deep Learning.
IACR Cryptol. ePrint Arch.
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
2021 J jnl
PNB-based Differential Cryptanalysis of ChaCha Stream Cipher.
IACR Cryptol. ePrint Arch.
Shotaro Miyashita, Ryoma Ito, Atsuko Miyaji
2021 Misc conf
Security Analysis of End-to-End Encryption for Zoom Meetings.
ACISP
Takanori Isobe, Ryoma Ito
2021 J jnl
Security Analysis of End-to-End Encryption for Zoom Meetings.
IEEE Access
Takanori Isobe, Ryoma Ito
2021 J jnl
Security Analysis of End-to-End Encryption for Zoom Meetings.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito
2021 — conf
Security Analysis of SFrame.
ESORICS (2)
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2021 J jnl
Security Analysis of SFrame.
IACR Cryptol. ePrint Arch.
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
2021 J jnl
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption.
IACR Cryptol. ePrint Arch.
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
2020 C conf
Rotational Cryptanalysis of Salsa Core Function.
ISC
Ryoma Ito
2018 Misc conf
New Iterated RC4 Key Correlations.
ACISP
Ryoma Ito, Atsuko Miyaji
2017 J jnl
Refined Construction of RC4 Key Setting in WPA.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryoma Ito, Atsuko Miyaji
2016 J jnl
Refined Glimpse Correlations of RC4.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryoma Ito, Atsuko Miyaji
2016 J jnl
Refined RC4 Key Correlations of Internal States in WPA.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ryoma Ito, Atsuko Miyaji
2015 Misc conf
How TKIP Induces Biases of Internal States of Generic RC4.
ACISP
Ryoma Ito, Atsuko Miyaji
2015 A* conf
New Linear Correlations Related to State Information of RC4 PRGA Using IV in WPA.
FSE
Ryoma Ito, Atsuko Miyaji
2014 Misc conf
New Integrated Long-Term Glimpse of RC4.
WISA
Ryoma Ito, Atsuko Miyaji