Helping Johnny to Search: Encrypted Search on Webmail System. - Tatsuya Midorikawa; Akihiro Tachikawa; Akira Kanaoka (AsiaJCIS, 2018)

Helping Johnny to Search: Usable Encrypted Search on Webmail System. - Tatsuya Midorikawa; Akihiro Tachikawa; Akira Kanaoka (J. Inf. Process., 2019)

Private Cloud Storage: Client-Side Encryption and Usable Secure Utility Functions. - Akihiro Tachikawa; Akira Kanaoka (HCI (30), 2020)