大数据分析下隐私信息传输安全性评估仿真

摘要

A security evaluation method of privacy information transmission based on network entropy is presented.The network entropy is used to quantify the changes of security performance of privacy information transmission before and after the intrusion attack.At the same time,the mixed strategy game is introduced to build the random game model of confrontation in privacy information transmission.The security evaluation index system of privacy information transmission is constructed through packet loss rate,maximum throughput of transmission and invulnerability index.Then,the subjective weight and objective weight of security evaluation indicator are obtained.Combining the principle of addition with the subjective weight value and objective weight value,the comprehensive weight of security evaluation index is obtained,and the optimal membership degree of privacy information is calculated.Thus,the security evaluation of privacy information transmission is completed.Simulation results verify that this method can obtain the subjective weight and objective weight according to the security evaluation index system of privacy information transmission.The evaluation result is coincided with the actual situation on the whole.It has good precision.%如何有效地认识隐私信息传输过程中的安全风险和避免这些风险,是大数据安全管理领域一个重大的实际问题.进行隐私信息传输时,需要构建安全性评估指标体系,获取评估指标的主、客观权重完成传输安全性评估.但是当前评估方法从防御方的角度对攻击威胁进行评估,难以获得评估指标的主、客观权重,存在评估结果与实际结果误差较大的问题.提出引入网络熵的隐私信息传输安全性评估方法,采用网络熵量化受到入侵攻击前后隐私信息传输安全性能的变化情况,同时引入混合策略博弈建立隐私信息传输中对抗随机博弈模型.由丢包率、传输最大吞吐量、抗毁性指标构建隐私信息传输安全性评估指标体系,获得安全性评估指标的主、客观权重,结合加法原理融合主客观权重值得到安全性评估指标的综合权重值,计算出待评隐私信息的优属度值,完成隐私信息传输安全性评估.实验结果表明,上述方法可依据构建的隐私信息传输安全性评估指标体系获取指标主、客观权重,评估结果与实际情况基本吻合,精度较优.