移动环境多角色安全互斥风险的模糊评估

Fuzzy risk evaluation on multi-role security mutual exclusion in mobile environment

传统机制解决移动环境多角色安全互斥问题的效率较低,为此,提出利用多角色综合敏感度评判安全互斥程度的解决方案。系统基于角色内部安全因素模糊评判角色敏感度,再采用补偿竞争算法计算多角色综合敏感度,即对角色敏感度进行海明距离补偿,取补偿后的最大值为多角色综合敏感度,使移动环境多角色系统在安全和效率间取得平衡。最后,分析了算法的复杂度,使用实例论证了算法可以提高角色的执行效率。

Since the traditional mechanism is low in efficiency to solve the multi-role security mutex in the mobile environment,a solution was proposed to determine the degree of security mutex using the multi-role comprehensive sensitivity.The system carried out fuzzy evaluation on the sensitivity of a role based on the internal security factors of the role,then calculated the comprehensive sensitivity of multiple roles utilizing the compensation competitive algorithm,i.e.did the Hamming distance compensation to the role sensitivity,took the compensated maximum as the multi-role comprehensive sensitivity,enabling the multi-role system in the mobile environment to achieve a balance between safety and efficiency.Finally,the algorithm has been analyzed for its complexity and an example demonstrates that the algorithm can increase the execution efficiency of the roles.