一种基于区块链信息映射的无载体隐写方法  

A coverless information steganographic method based on blockchain information mapping

作　　者：秦姣华[1] 卿大山 向旭宇 谭云[1] QIN Jiaohua;QING Dashan;XIANG Xuyu;TAN Yun(School of Electronic Information and Physics,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]中南林业科技大学电子信息与物理学院,湖南长沙410004

出　　处：《华中科技大学学报（自然科学版）》2024年第11期58-63,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(62372478);湖南省自然科学基金资助项目(2022JJ31019);湖南省研究生科研创新资助项目(CX20220746);长沙市自然科学基金资助项目(kq2402262)。

摘　　要：针对区块链隐蔽通信中高成本和交易未上链信息丢失的问题,提出一种基于区块链信息映射的无载体隐写方法.首先,该方法对虚拟货币中的区块信息进行预处理,分析解析后的数据,根据数据的属性选取合适的信息作为秘密信息载体;然后,对提取后的数据构建奇偶映射规则,将秘密信息映射到区块信息中;最后,接收方根据附带信息从不同的区块链场景中提取出所需要的秘密消息.实验结果表明:该方法能有效提高单次秘密信息传输的容量,同时使用无载体技术无须在链上发起交易,有效节约构造交易产生的成本;在不同的区块链场景中实现秘密信息的映射,提高了区块链隐蔽通信的拓展性.Aiming at the problems of high cost and loss of transaction unlinked information in blockchain steganographic communication,a coverless steganography method based on blockchain information mapping was proposed.First,the block information in virtual currency was preprocessed.The parsed data was analyzed,and suitable information was selected as the secret information carrier according to the data's attributes.Then,parity mapping rules were constructed for the extracted data to map the secret information into the block information.Finally,the receiver extracted the desired secret message from different blockchain scenarios based on the accompanying information.Experiment results show that the capacity of a single secret message transmission can be effectively increased.Meanwhile,the use of coverless technology does not require initiating a transaction on the chain,which can effectively save the cost incurred by constructing a transaction.The mapping of secret messages in different blockchain scenarios can be implemented,which improves the expandability of blockchain covert communication.

关 键 词：区块链 隐蔽通信 区块信息 无载体 信息安全 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]