An RSA Family of Trap-Door Permutations with a Common Domain and Its Applications. - Ryotaro Hayashi 001; Tatsuaki Okamoto; Keisuke Tanaka (Public Key Cryptography, 2004)

Universally Anonymizable Public-Key Encryption. - Ryotaro Hayashi 001; Keisuke Tanaka (ASIACRYPT, 2005)

The Sampling Twice Technique for the RSA-Based Cryptosystems with Anonymity. - Ryotaro Hayashi 001; Keisuke Tanaka (Public Key Cryptography, 2005)

PA in the Two-Key Setting and a Generic Conversion for Encryption with Anonymity. - Ryotaro Hayashi 001; Keisuke Tanaka (ACISP, 2006)

Schemes for Encryption with Anonymity and Ring Signature. - Ryotaro Hayashi 001; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Anonymity on Paillier's Trap-Door Permutation. - Ryotaro Hayashi 001; Keisuke Tanaka (ACISP, 2007)

Unforgeability of Re-Encryption Keys against Collusion Attack in Proxy Re-Encryption. - Ryotaro Hayashi 001; Tatsuyuki Matsushita; Takuya Yoshida; Yoshihiro Fujii; Koji Okada (IWSEC, 2011)

A Proxy Re-Encryption Scheme with the Unforgeability of Re-Encryption Keys against Collusion Attacks. - Ryotaro Hayashi 001; Tatsuyuki Matsushita (IACR Cryptol. ePrint Arch., 2014)