Y. Watanabe, G. Hanaoka, and J. Shikata, “How to Provide Long-term Security and Required Functionality for Cloud Storage,” In Yokohama Environment and Information Sciences (YEIS) International Forum, Yokohama, Japan, 2015.

Y. Ishida, Y. Watanabe, and J. Shikata, “Constructions of Strongly Secure Revocable Identity-based Encryption,” In Yokohama Environment and Information Sciences (YEIS) International Forum, Yokohama, Japan, 2015.

Y. Watanabe, G. Hanaoka, and J. Shikata, “How to Provide Long-term Security and Required Functionality for Cloud Storage,” In PRIVAGEN, Tokyo, Japan, 2015.

Y. Watanabe and J. Shikata, “Information-Theoretically Secure Revocable-Storage Broadcast Encryption,” In IWSEC, Hirosaki, Japan, 2014. [Best Poster Award]