Biography

• I am a first year Ph.D. candidate under the supervision of Prof. Yushu Zhang at Nanjing University of Aeronautics and Astronautics (NUAA).
• My research focuses on image encryption and visual signal processing for multimedia security and privacy protection applications.
• My current work lies in the multimedia visual usability and privacy balance by some encryption protocols.

Research Topics

• Multimedia Security { Lightweight Cryptogrammic Protocols }
• Privacy Protection { Visual Observability Protection }

Academic Qualifications

• Ph.D. Candidate, College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics (2022 - now) (Supervised by Prof. Yushu Zhang)
• M.Sc., College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics (2019 - 2022) (Supervised by Prof. Yushu Zhang)
• B.A., College of Software, Zhengzhou University (2015 - 2019)

Selected Publications

Under-Review Paper

• Metaverse: Security and Privacy Concerns
  Ruoyu Zhao, Yushu Zhang, Youwen Zhu, Rushi Lan, and Zhongyun Hua
  arXiv:2203.03854, 2022.
  [arXiv paper]
  

Peer-Reviewed Papers

• F-TPE: Flexible Thumbnail-Preserving Encryption Based on Multi-Pixel Sum-Preserving Encryption
  Yushu Zhang, Wentao Zhou, Ruoyu Zhao*, Xinpeng Zhang, and Xiaochun Cao
  IEEE Transactions on Multimedia (TMM), 2022.
  [paper]
  
• Primitively visually meaningful image encryption: A new paradigm
  Ruoyu Zhao, Yushu Zhang*, Yu Nan, Wenying Wen, Xiuli Chai, and Rushi Lan
  Information Sciences (INS), 2022.
  [paper]
  
• PRA-TPE: Perfectly Recoverable Approximate Thumbnail-Preserving Image Encryption
  Xi Ye, Yushu Zhang*, Ruoyu Zhao, Rushu Lan, and Yong Xiang
  Journal of Visual Communication and Image Representation (JVCI), 2022.
  [paper]
  
• HF-TPE: High-fidelity thumbnail-preserving encryption
  Yushu Zhang, Ruoyu Zhao, Xiangli Xiao, Rushu Lan, Zhe Liu*, and Xinpeng Zhang
  IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), 2022.
  [paper] [a short introduction (in Chinese)]
  
  
• High-efficiency and visual-usability image encryption based on thumbnail preserving and chaotic system
  Yongming Zhang, Ruoyu Zhao*, Yushu Zhang*, Rushi Lan, and Xiuli Chai
  Journal of King Saud University - Computer and Information Sciences (JKSUCIS), 2022.
  [paper]
  
• TPE2: Three-pixel exact thumbnail-preserving image encryption
  Ruoyu Zhao, Yushu Zhang*, Xiangli Xiao, Xi Ye, and Rushi Lan
  Signal Processing (SP), 2021.
  [paper]
  

Thesis

• Study on thumbnail-preserving image encryption
  Ruoyu Zhao
  M.Sc. Thesis, 2022.
  

Awards and Honors

• Outstanding graduates of Nanjing University of Aeronautics and Astronautics, 2022.
• Special scholarship for Postgraduates of Nanjing University of Aeronautics and Astronautics, 2021.
• Merit Postgraduates of Nanjing University of Aeronautics and Astronautics, 2021.
• Advanced individual in scientific research and innovation of Nanjing University of Aeronautics and Astronautics, 2021.