基于密码学的网络多模态信息动态加密系统设计  

Design of cryptography-based dynamic encryption system for network multimodal information

作　　者：糜小夫 MI Xiaofu(Guizhou University of Finance and Economics,Guiyang 550025,China)

机构地区：[1]贵州财经大学

出　　处：《现代电子技术》2020年第4期51-53,57,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助(60632050)

摘　　要：为改善传统的网络信息加密系统抗攻击力较差、容易出现数据丢失、解密后的密文不完整的情况,设计基于密码学的网络多模态信息动态加密系统。设计网络加密卡,将其嵌入网络层和链路之间,通过加密卡上的加密模块实现加密功能状态转换,利用PCIE总线接口实现设备的基本协议功能,完成设备与主机之间的数据交互。在此基础上,依据密码学中的密码体制改变密钥的长度,利用基于密码学的动态算法和软件程序,实现网络多模态信息动态加密。测试结果表明,在受到攻击后,与传统加密系统进行加解密后的结果相比,利用基于密码学的动态加密系统加密的密文保存完整,解密后的明文与原始明文相同,抗攻击能力强。A cryptography⁃based dynamic encryption system for network multimodal information is designed to deal with the poor anti⁃attack ability of traditional network information encryption system,which is prone to data loss and results in incomplete ciphertext after decryption.The network encryption card is designed and embedded between network layer and link.The state transition of encryption function is realized by the encryption module in the encryption card.The basic protocol function of the device is realized with the PCIE bus interface,so as to complete the data interaction between the device and the host computer.On this basis,the length of the secret key is changed according to the cryptosystem of the cryptography,and the dynamic encryption of the network multimodal information is realized with the software program and dynamic algorithm based on cryptography.The testing results show that,after being attacked,in comparison with the results of encryption and decryption of traditional encryption system,the ciphertext encrypted with the dynamic encryption system based on cryptography is completely preserved,the decrypted plaintext is the same as the original plaintext,and has stronger anti⁃attack ability.

关 键 词：动态加密 网络多模态信息 总线接口设计 系统设计 加密卡设计 系统测试 

分 类 号：TN918.2-34[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]