Company Filing History:
3 out of 40 
2 out of 28 
1 out of 267 
Years Active: 2024-2025
Title: Innovations and Contributions of Inventor Song Han
Introduction
Song Han is a prominent inventor based in Hangzhou, China. He has made significant contributions to the field of encryption and data privacy, holding three patents that showcase his innovative approach to technology. His work focuses on enhancing security and privacy in data management systems.
Latest Patents
One of his latest patents is titled "Dynamic and verifiable searchable encryption method and system based on updatable encryption and blockchain." This method is designed for scenarios where the data user and the data owner are different parties. It utilizes updatable technology to refresh the secret key in searchable encryption, achieving Chosen Ciphertext Security (CCA) and Ciphertext Integrity (CTXT) security. Additionally, it assesses the trustworthiness of cloud servers by publicly verifying search results through blockchain technology. This advancement significantly enhances the practicality and security of searchable encryption.
Another notable patent is the "Data maximum/minimum value aggregation method and system for privacy protection." This method employs a Paillier cryptosystem to encrypt user data, ensuring the privacy and security of health information. It implements time aggregation to provide a comprehensive overview of a client's health condition during a specified period. By leveraging the homomorphic properties of the Paillier cryptosystem, this method allows for the aggregation of maximum and minimum health data while maintaining privacy protection.
Career Highlights
Song Han has worked at notable institutions, including Hangzhou City University and Zhejiang Gongshang University. His academic and professional experiences have contributed to his expertise in encryption and data privacy.
Collaborations
He has collaborated with colleagues such as Siqi Ren and Minghui Wu, further enhancing his research and development efforts in the field.
Conclusion
Song Han's innovative patents and contributions to encryption and data privacy demonstrate his commitment to advancing technology in meaningful ways. His work not only addresses current challenges in data security but also paves the way for future advancements in the field.