Researchers, from Zhejiang University, the City University of Hong Kong, and Alibaba, were recently honored with a Best Paper Award at the 40th IEEE International Conference on Distributed Computing Systems(ICDCS) for their paper, “HybrIDX: New Hybrid Index for Volume-hiding Range Queries in Data Outsourcing Services”. ICDCS is one of the prestigious conferences in the field of distributed computing systems. It is an important platform for engineers and scientists from international academia, industry and government to share research results. Submission to ICDCS was very competitive, with nearly 600 papers submitted and an overall acceptance rate of only 18 percent.
The paper proposes a new efficient and secure index scheme to protect the confidentiality of data at cloud. In recent years, data as an important factor of production has strongly promoted the rapid development of many fields such as artificial intelligence and the Internet of Things. However, while enjoying the huge economic gains brought about by data, enterprises are also facing increasingly frequent data leakage accidents and the security risks that they bring. In order to enhance data security, it is necessary to build an encrypted database that can protect data security during runtime. In the past 15 years, many well-known experts and scholars at home and abroad have devoted themselves to the research of encrypted databases, making rapid progress in designing security mechanisms, enriching encrypted data query functions, and improving system performance.
The paper leverages the trusted hardware techniques and efficient volume-hiding cryptographic primitives to achieve multiple data security features, while reducing storage overhead and performance overhead. The result shows that the proposed design is provably secure and highly efficient. This is critical for handling the increase in security requirements and computational requirements of data management. The research team of Zhejiang University will further explore the research field and are committed to promoting the development of the encrypted database.