Ryoma Ito

Publication Activity (10 Years)

Years Active: 2014-2024
Publications (10 Years): 34

Top Topics

Encryption Scheme

Internal States

Top Venues

IACR Cryptol. ePrint Arch.

IEICE Trans. Fundam. Electron. Commun. Comput. Sci.

IACR Trans. Symmetric Cryptol.

Publications

Hayato Watanabe, Ryoma Ito, Toshihiro Ohigashi
On the Effects of Neural Network-based Output Prediction Attacks on the Design of Symmetric-key Ciphers. IACR Cryptol. ePrint Arch. 2024 (2024)
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications. IACR Cryptol. ePrint Arch. 2023 (2023)
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
A Deeper Look into Deep Learning-based Output Prediction Attacks Using Weak SPN Block Ciphers. J. Inf. Process. 31 (2023)
Yu Long Chen, Antonio Flórez-Gutiérrez, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Minematsu, Nicky Mouha, Yusuke Naito, Ferdinand Sibleyras, Yosuke Todo
Key Committing Security of AEZ and More. IACR Trans. Symmetric Cryptol. 2023 (4) (2023)
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
Areion: Highly-Efficient Permutations and Its Applications (Extended Version). IACR Cryptol. ePrint Arch. 2023 (2023)
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
Cryptanalysis on End-to-End Encryption Schemes of Communication Tools and Its Research Trend. J. Inf. Process. 31 (2023)
Kosei Sakamoto, Ryoma Ito, Takanori Isobe
Parallel SAT Framework to Find Clustering of Differential Characteristics and Its Applications. SAC (2023)
Nasratullah Ghafoori, Atsuko Miyaji, Ryoma Ito, Shotaro Miyashita
PNB Based Differential Cryptanalysis of Salsa20 and ChaCha. IEICE Trans. Inf. Syst. 106 (9) (2023)
Takanori Isobe, Ryoma Ito, Fukang Liu, Kazuhiko Minematsu, Motoki Nakahashi, Kosei Sakamoto, Rentaro Shiba
Areion: Highly-Efficient Permutations and Its Applications to Hash Functions for Short Input. IACR Trans. Cryptogr. Hardw. Embed. Syst. 2023 (2) (2023)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and key recovery attacks on the reduced-round SNOW-V and SNOW-Vi. J. Inf. Secur. Appl. 65 (2022)
Akinori Hosoyamada, Akiko Inoue, Ryoma Ito, Tetsu Iwata, Kazuhiko Mimematsu, Ferdinand Sibleyras, Yosuke Todo
Cryptanalysis of Rocca and Feasibility of Its Security Claim. IACR Trans. Symmetric Cryptol. 2022 (3) (2022)
Shotaro Miyashita, Ryoma Ito, Atsuko Miyaji
PNB-Focused Differential Cryptanalysis of ChaCha Stream Cipher. ACISP (2022)
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption. ICEIS (2) (2022)
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
Output Prediction Attacks on Block Ciphers Using Deep Learning. ACNS Workshops (2022)
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
New Cryptanalysis of ZUC-256 Initialization Using Modular Differences. IACR Trans. Symmetric Cryptol. 2022 (3) (2022)
Takanori Isobe, Ryoma Ito
Security Analysis of End-to-End Encryption for Zoom Meetings. ACISP (2021)
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
Security Analysis of SFrame. ESORICS (2) (2021)
Fukang Liu, Willi Meier, Santanu Sarkar, Gaoli Wang, Ryoma Ito, Takanori Isobe
Finding Practical Distinguishers for ZUC-256 Using Modular Differences. IACR Cryptol. ePrint Arch. 2021 (2021)
Ryoma Ito, Atsuko Miyaji
New Iterated RC4 Key Correlations and their Application to Plaintext Recovery on WPA-TKIP. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2021)
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
Bit-wise Cryptanalysis on AND-RX Permutation Friet-PC. IACR Cryptol. ePrint Arch. 2021 (2021)
Hayato Kimura, Keita Emura, Takanori Isobe, Ryoma Ito, Kazuto Ogawa, Toshihiro Ohigashi
Output Prediction Attacks on SPN Block Ciphers using Deep Learning. IACR Cryptol. ePrint Arch. 2021 (2021)
Ryoma Ito, Rentaro Shiba, Kosei Sakamoto, Fukang Liu, Takanori Isobe
Bit-wise cryptanalysis on AND-RX permutation Friet-PC. J. Inf. Secur. Appl. 59 (2021)
Shotaro Miyashita, Ryoma Ito, Atsuko Miyaji
PNB-based Differential Cryptanalysis of ChaCha Stream Cipher. IACR Cryptol. ePrint Arch. 2021 (2021)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V. ACISP (2021)
Jin Hoki, Takanori Isobe, Ryoma Ito, Fukang Liu, Kosei Sakamoto
Distinguishing and Key Recovery Attacks on the Reduced-Round SNOW-V. IACR Cryptol. ePrint Arch. 2021 (2021)
Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption. IACR Cryptol. ePrint Arch. 2021 (2021)
Takanori Isobe, Ryoma Ito
Security Analysis of End-to-End Encryption for Zoom Meetings. IACR Cryptol. ePrint Arch. 2021 (2021)
Takanori Isobe, Ryoma Ito, Kazuhiko Minematsu
Security Analysis of SFrame. IACR Cryptol. ePrint Arch. 2021 (2021)
Takanori Isobe, Ryoma Ito
Security Analysis of End-to-End Encryption for Zoom Meetings. IEEE Access 9 (2021)
Ryoma Ito
Rotational Cryptanalysis of Salsa Core Function. ISC (2020)
Ryoma Ito, Atsuko Miyaji
New Iterated RC4 Key Correlations. ACISP (2018)
Ryoma Ito, Atsuko Miyaji
Refined Construction of RC4 Key Setting in WPA. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2017)
Ryoma Ito, Atsuko Miyaji
Refined RC4 Key Correlations of Internal States in WPA. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (6) (2016)
Ryoma Ito, Atsuko Miyaji
Refined Glimpse Correlations of RC4. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2016)
Ryoma Ito, Atsuko Miyaji
How TKIP Induces Biases of Internal States of Generic RC4. ACISP (2015)
Ryoma Ito, Atsuko Miyaji
New Linear Correlations Related to State Information of RC4 PRGA Using IV in WPA. FSE (2015)
Ryoma Ito, Atsuko Miyaji
New Integrated Long-Term Glimpse of RC4. WISA (2014)