基于轻量化区块链节点的通信数据安全技术研究

Research on communication data security technology based on lightweight blockchain nodes

为了确保网络通信的安全可靠,针对交互过程中数据被恶意攻击、篡改与泄漏等问题,文中在轻量化区块链节点的基础上提出了一种通信数据交互处理方案。该方案设计并采用了基于“私有链-联合链-私有链”的分组-分配数据存储结构来传输及保存通信数据,同时还通过改进型的加密算法解决了交互通信过程中的数据安全问题。加解密和安全性分析实验结果表明,相较于“联合-私有”双链结构的区块链通信数据交互方案以及可撤销属性基加密算法,所提方案在相同节点情况下的数据加密复杂度下降了40%,加密时间减少约33%,且密钥敏感度可以保持在50%以上。在通信数据交互处理过程中,该方法既保障了数据传输的安全性与完整性,又降低了传输时延。

In order to ensure the safety and reliability of network communication,a communication data interaction processing scheme based on lightweight blockchain node is proposed in this paper to solve the problems of data leakage,malicious attack and data tampering during data interaction.The scheme designed and adopted a packet allocation storage data structure based on“private chain⁃joint chain⁃private chain”to store and transmit communication data.The improved encryption algorithm is used to solve the data security problem in the process of interactive communication.The experimental results of encryption,decryption and security analysis show that the data encryption complexity of the proposed scheme is reduced by 40%,the encryption time is reduced by about 33%,and the key sensitivity can be kept above 50%compared with the"joint private"dual chain blockchain communication data interaction scheme and the revocable attribute based encryption algorithm under the same node condition,In the process of communication data interactive processing,it not only ensures the security and integrity of communication data transmission,but also reduces the transmission delay.