(Peer-Reviewed) sys: A Privacy-preserving Scheme for Reputation-based Blockchain System
Chenyu Huang ¹, Yongjun Zhao ², Huangxun Chen ³, Xu Wang ⁴, Qian Zhang 张黔 ⁵, Yanjiao Chen 陈艳姣 ⁶, Huaxiong Wang 王华雄 ², Kwok-Yan Lam 林国恩 ²
¹ Ping An Technology, Shenzhen, China
中国 深圳 平安科技
² Nanyang Technological University, Singapore
³ Theory Lab of 2012 Labs, Huawei, Shenzhen, China
中国 深圳 华为2012实验室理论实验室
⁴ School of Computer Science, Wuhan University, Wuhan, China
中国 武汉 武汉大学计算机学院
⁵ Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong
香港 香港科技大学计算机科学与工程系
⁶ College of Electrical Engineering, Zhejiang University, Hangzhou, China
中国 杭州 浙江大学电气工程学院
IEEE Internet of Things Journal, 2021-08-24

Reputation/Trust-based blockchain systems have attracted considerable research interests for better integrating Internet-of-Things with blockchain in terms of throughput, scalability, energy efficiency and incentive aspects. However, most existing works only consider static adversaries. Hence, they are vulnerable to slowly adaptive attackers, who can target validators with high reputation value to severely degrade the system performance. Therefore, we introduce , a privacy-preserving scheme tailored for reputation-based blockchains.

Our basic idea is to hide both the identity and reputation of the validators by periodically changing the identity and reputation commitments (i.e., aliases), which makes it much more difficult for slowly adaptive attackers to identify validators with high reputation value. To realize this idea, we utilize privacy-preserving Pedersen-commitment-based reputation updating and leader election schemes that operate on concealed reputations within an epoch.

We also introduce a privacy-preserving identity update protocol that changes the identity and time-window-based cumulative reputation commitments during each epoch transition. We have implemented and evaluated on the Amazon Web Service. The experimental results and analysis show that achieves great privacy-preserving features against slowly adaptive attacks with little overhead.
sys: A Privacy-preserving Scheme for Reputation-based Blockchain System_1
sys: A Privacy-preserving Scheme for Reputation-based Blockchain System_2
sys: A Privacy-preserving Scheme for Reputation-based Blockchain System_3
  • Power grid fault diagnosis based on a deep pyramid convolutional neural network
  • Xu Zhang 张旭, Huiting Zhang, Dongying Zhang, Yixian Wang, Ruiting Ding, Yuchuan Zheng, Yongxu Zhang
  • CSEE Journal of Power and Energy Systems
  • 2022-05-06
  • China's factor reallocation effect considering energy
  • Guangqing Xu, Xiaoyu Chen
  • Chinese Journal of Population, Resources and Environment
  • 2022-05-02
  • Cannabidiol prevents depressive-like behaviors through the modulation of neural stem cell differentiation
  • Ming Hou, Suji Wang, Dandan Yu, Xinyi Lu, Xiansen Zhao, Zhangpeng Chen, Chao Yan
  • Frontiers of Medicine
  • 2022-04-26
  • Cultivation of gut microorganisms of the marine ascidian Halocynthia roretzi reveals their potential roles in the environmental adaptation of their host
  • Yang Yang, Yuting Zhu, Haiming Liu, Jiankai Wei, Haiyan Yu, Bo Dong
  • Marine Life Science & Technology
  • 2022-04-26
  • Data network traffic analysis and optimization strategy of real-time power grid dynamic monitoring system for wide-frequency measurements
  • Jinsong Li, Hao Liu, Wenzhuo Li, Tianshu Bi, Mingyang Zhao
  • Global Energy Interconnection
  • 2022-04-25
  • Field distribution of the Z₂ topological edge state revealed by cathodoluminescence nanoscopy
  • Xiao He, Donglin Liu, Hongfei Wang, Liheng Zheng, Bo Xu, Biye Xie, Meiling Jiang, Zhixin Liu, Jin Zhang, Minghui Lu, Zheyu Fang
  • Opto-Electronic Advances
  • 2022-04-25
  • Advances in femtosecond laser direct writing of fiber Bragg gratings in multicore fibers: technology, sensor and laser applications
  • Alexey Wolf, Alexander Dostovalov, Kirill Bronnikov, Mikhail Skvortsov, Stefan Wabnitz, Sergey Babin
  • Opto-Electronic Advances
  • 2022-04-25
  • Graphene-empowered dynamic metasurfaces and metadevices
  • Chao Zeng, Hua Lu, Dong Mao, Yueqing Du, He Hua, Wei Zhao, Jianlin Zhao
  • Opto-Electronic Advances
  • 2022-04-25
  • Charge carrier dynamics in different crystal phases of CH₃NH₃PbI₃ perovskite
  • Efthymis Serpetzoglou, Ioannis Konidakis, George Kourmoulakis, Ioanna Demeridou, Konstantinos Chatzimanolis, Christos Zervos, George Kioseoglou, Emmanuel Kymakis, Emmanuel Stratakis
  • Opto-Electronic Science
  • 2022-04-21
  • Applications of optically and electrically driven nanoscale bowtie antennas
  • Zhongjun Jiang, Yingjian Liu, Liang Wang
  • Opto-Electronic Science
  • 2022-04-20
  • Validation of the bodily expressive action stimulus test among Chinese adults and children
  • Yunmei Yang, Wenwen Hou, Jing Li
  • PsyCh Journal
  • 2022-04-17

  • Intent-based policy optimization in SD-WAN                                NetGraph: An Intelligent Operated Digital Twin Platform for Data Center Networks
    Copyright © PubCard