Theoretical aspects of advanced cryptography

Originally, cryptosystems have been developed to interact securely. Nonetheless, recently advanced cryptography, which aim to rather than secure interaction, are widely investigated. For instance, a cryptographic primitive called searchable encryption provides a search function on encrypted data, so it is expected to be used in cloud server systems. My research mainly focuses on theoretical aspects of such advanced cryptography, such as adding new functionalities to them, or considering theoretical attacks in a practical scenario.