Chosen Ciphertext Security for Blind Identity-Based Encryption with Certified Identities. - Sohto Chiku; Keisuke Hara; Junji Shikata (ISPEC, 2023)

Identity-Based Matchmaking Encryption Secure Against Key Generation Center. - Sohto Chiku; Keisuke Hara; Junji Shikata (ProvSec, 2023)

Identity-Based Matchmaking Encryption, Revisited: Strong Security and Practical Constructions from Standard Classical and Post-Quantum Assumptions. - Sohto Chiku; Keitaro Hashimoto; Keisuke Hara; Junji Shikata (IACR Cryptol. ePrint Arch., 2023)

How to Apply Fujisaki-Okamoto Transformation to Registration-Based Encryption. - Sohto Chiku; Keisuke Hara; Keitaro Hashimoto; Toi Tomita; Junji Shikata (CANS (2), 2024)

How to Accomplish Key and Communication Compression Over Authentication Channels - Proxy Re-authentication and Its Instantiations. - Yoshiro Matsuoka; Sohto Chiku; Keisuke Hara; Junji Shikata (NSS, 2024)

Chosen Ciphertext Security for (Hierarchical) Identity-Based Matchmaking Encryption. - Sohto Chiku; Keisuke Hara; Junji Shikata (IACR Cryptol. ePrint Arch., 2024)