区块链环境下隐蔽信道研究综述
Overview of Covert Channel Research in Blockchain Environment
摘要
Abstract
Covert channel is a method to hide information in public communication channels for covert transmis-sion,aiming at ensuring data transmission security and making third parties unaware of the covert communication process.However,with the continuous progress of traffic analysis technology,traditional network covert channels can no longer guarantee their security.Blockchain,as an emerging technology that combines cryptography,consen-sus algorithms,and P2P networks,has characteristics such as decentralization,traceability,anonymity,immutability,and security,making it an ideal platform for constructing covert channels.This paper first introduces blockchain technology,elaborates on the development process of covert channels,researches and summarizes the existing classi-fication methods of covert channels.Then it summarizes the general model of blockchain covert channel on the basis of traditional network covert channel and divides the process of constructing covert channel into two main stages:information transmission and information extraction.Next,starting from the six-layer architecture of blockchain,the blockchain covert channels are analyzed in depth and the blockchain covert channels are divided into six categories according to different levels and subdivided based on the structure and mechanism of each layer,which can help better understand the construction process of blockchain covert channels and explore potential covert channels.Finally,this paper discusses the limitations of blockchain technology for covert channels and proposes future re-search directions.关键词
区块链/隐蔽信道/隐蔽信道分类/信息传输/信息提取Key words
blockchain/covert channel/covert channel classification/information transmission/information extraction分类
信息技术与安全科学引用本文复制引用
张璇,李雷孝,杜金泽,史建平..区块链环境下隐蔽信道研究综述[J].计算机科学与探索,2024,18(6):1438-1456,19.基金项目
国家自然科学基金(62362055) （62362055）
内蒙古自治区重点研发与成果转化计划项目(2022YFSJ0013,2023YFHH0052) （2022YFSJ0013,2023YFHH0052）
内蒙古自治区高等学校青年科技英才支持计划项目(NJYT22084) （NJYT22084）
内蒙古自然科学基金(2023MS06008) （2023MS06008）
内蒙古自治区科技成果转化专项资金项目(2020CG0073,2021CG0033) （2020CG0073,2021CG0033）
内蒙古自治区直属高校科研项目(JY20220061,JY20230119,JY20230019) （JY20220061,JY20230119,JY20230019）
鄂尔多斯市重点研发计划项目(YF20232328).This work was supported by the National Natural Science Foundation of China(62362055),the Key Research and Development and Achievement Transformation Program of Inner Mongolia Autonomous Region(2022YFSJ0013,2023YFHH0052),the Support Program for Young Scientific and Technological Talents in Higher Education Institutions in Inner Mongolia Autonomous Region(NJYT22084),the Natural Science Foundation of Inner Mongolia(2023MS06008),the Special Funds for Transformation of Scientific and Technologi-cal Achievements in Inner Mongolia Autonomous Region(2020CG0073,2021CG0033),the Research Project of Universities Directly under Inner Mongolia Autonomous Region(JY20220061,JY20230119,JY20230019),and the Key Research and Development Pro-gram of Ordos(YF20232328). （YF20232328）
