A Cramer-Shoup Variant Related to the Quadratic Residuosity Problem. - Harunaga Hiwatari; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Efficient Dynamic Broadcast Encryption and Its Extension to Authenticated Dynamic Broadcast Encryption. - Masafumi Kusakawa; Harunaga Hiwatari; Tomoyuki Asano; Seiichi Matsuda (CANS, 2008)

Multi-recipient Public-Key Encryption from Simulators in Security Proofs. - Harunaga Hiwatari; Keisuke Tanaka; Tomoyuki Asano; Koichi Sakumoto (ACISP, 2009)

Piccolo: An Ultra-Lightweight Blockcipher. - Kyoji Shibutani; Takanori Isobe 001; Harunaga Hiwatari; Atsushi Mitsuda; Toru Akishita; Taizo Shirai (CHES, 2011)

Public-Key Identification Schemes Based on Multivariate Quadratic Polynomials. - Koichi Sakumoto; Taizo Shirai; Harunaga Hiwatari (CRYPTO, 2011)

On Provable Security of UOV and HFE Signature Schemes against Chosen-Message Attack. - Koichi Sakumoto; Taizo Shirai; Harunaga Hiwatari (PQCrypto, 2011)

Very Compact Hardware Implementations of the Blockcipher CLEFIA. - Toru Akishita; Harunaga Hiwatari (Selected Areas in Cryptography, 2011)

Midori: A Block Cipher for Low Energy. - Subhadeep Banik; Andrey Bogdanov; Takanori Isobe 001; Kyoji Shibutani; Harunaga Hiwatari; Toru Akishita; Francesco Regazzoni 001 (ASIACRYPT (2), 2015)

Midori: A Block Cipher for Low Energy (Extended Version). - Subhadeep Banik; Andrey Bogdanov; Takanori Isobe 001; Kyoji Shibutani; Harunaga Hiwatari; Toru Akishita; Francesco Regazzoni 001 (IACR Cryptol. ePrint Arch., 2015)

Round gating for low energy block ciphers. - Subhadeep Banik; Andrey Bogdanov; Francesco Regazzoni 001; Takanori Isobe 001; Harunaga Hiwatari; Toru Akishita (HOST, 2016)

Inverse gating for low energy encryption. - Subhadeep Banik; Andrey Bogdanov; Francesco Regazzoni 001; Takanori Isobe 001; Harunaga Hiwatari; Toru Akishita (HOST, 2018)