通信学报2025，Vol.46Issue(2)：147-165,19.DOI:10.11959/j.issn.1000-436x.2025031
基于动态时间型二叉树的隐蔽通信模型
Covert communication model based on dynamic time binary trees
摘要
Abstract
A covert communication model based on a dynamic time binary tree was proposed to address the efficiency and security issues in blockchain-based covert communication.A time binary tree was dynamically generated at specific moments,and the roothash was used to extract random factors for assigning different path codes to the tree nodes.Com-munication information characters were mapped to the encoded paths and index fields.By embedding vacant bits of the path codes at specific moments and integrating them into blockchain transactions,covert transmission was achieved.The receiver reconstructed the time binary tree at the specific moment to complete the decoding.Experimental results show that,compared to similar models,the proposed model improves communication efficiency while ensuring security,and avoids the security risks brought by the pre-negotiation process.关键词
区块链/动态时间型二叉树/路径编码/隐蔽通信Key words
blockchain/dynamic time binary tree/path encoding/covert communication分类
信息技术与安全科学引用本文复制引用
佘维,马佳伟,张淑慧,程孔,刘炜,田钊..基于动态时间型二叉树的隐蔽通信模型[J].通信学报,2025,46(2):147-165,19.基金项目
国家重点研发计划基金资助项目(No.31703-3) （No.31703-3）
河南省高等学校重点科研基金资助项目(No.24A520045) The National Key Research and Development Program of China(No.31703-3),The Key Scientific Research Project of Colleges and Universities in Henan Province(No.24A520045) （No.24A520045）
