网络隐写信息传递系统的高效攻击检测

Efficient Attack Detection of Network Steganography Information Transmission System

提出了一种基于多路复用波束域约束指向形成的网络隐写信息传递系统的高效攻击检测算法,设计了网络隐写信息传递系统模型,提取信号的本征频率、群延迟和包络等信号特征,对链路层中的加密数据进行块内频率检测,为提高检测概率,对提取得到的多路复用波束域约束指向输出结果进行频分复用分解。根据最小均方误差准则,得到在网络隐写信息传递系统中攻击信号的波束域约束指向形成,实现正交频谱分离,抑制了干扰噪声,实现对攻击信号的高效检测。仿真结果表明,该算法检测出攻击信号波峰明显,抗噪能力强,检测概率高,在网络安全设计和信号检测等领域均具有一定的应用价值。

An efficient hidden form written information transfer system attack detection algorithm is proposed based on multiplexing beam domain constraints. The network steganography information transmission system model is designed. The signal extraction of intrinsic frequency is taken,group delay and envelope signal features are extracted,and block frequency on encrypted data link layer is detected. The multiplexed beam domain constraints are extracted to output frequency division multiplexing decomposition in order to improve the detection probability. By the minimum mean square error criterion,the beam domain constraint attack signals in network steganography information transfer system is obtained to achieve the formation,thus realizing orthogonal frequency separation,interference noise suppression,and efficient attack signal detection. The simulation results show that the algorithm has good anti noise performance and higher probability of detection with obvious attacks signal peak,and is of application value in network security design and signal detection.