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基于区间数据场景级属性可信评测的检测能力分析

2015-09-23耿颖

现代电子技术 2015年17期

耿颖

摘 要: 如今的可信计算机仅可以确保系统资源静态安全,但是在运行系统后,其软件行为可信性决定着终端计算机可信性。基于软件运行动态可信性,将基于区间数据场景级属性可信测评模型引入以往软件行为模型中,通过检查点属性分级,简化检查点可信评价,并结合检查点场景级客观赋权和属性主观分级赋权,以构建场景级属性可信模型的方式可信测评区间数据场景及属性。结果发现,基于分级属性减少了对比阈值的次数,由此表明,基于区间数据场景级属性可信评测攻击检测能力比较高,而且具有有效性。

关键词: 区间数据; 场景级属性; 可信评测; 检测能力

中图分类号: TN915?34 文献标识码: A 文章编号: 1004?373X(2015)17?0149?02

Analysis of detectability for trusted evaluation based on

scene?level attribute of interval data

GENG Ying

(Shanghai Children′s Medical Center, Shanghai 200127, China)

Abstract: Trusted computer can ensure static state security of system resource only, but the terminal computer credibility is determined by software behavior credibility after operating the system. Based on the dynamic credibility of software operation, the trusted evaluation model on the basis of the scene?level attribute of interval data is introduced into the previous software behavior model. The trusted evaluation of the checkpoint is simplified by attribute classification of the checkpoint. In combination with the objective weighting of the checkpoint scene?level and the subjective classification weighting of the attribute, the interval data scene and the attribute are evaluated by constructing the trusted model of scene?level attribute. It is found that the frequency of contrast threshold can be reduced by attribute classification, which shows that the detectability of trusted evaluation attack for interval data scene?level attribute is relatively high, and has validity.

Keywords: interval data; scene?level attribute; trusted evaluation; detectability

我国计算机技术与互联网技术在近些年得到不断发展与进步,但是软件在当今信息社会中逐渐发挥着重要作用,一旦软件出现故障或者运行失效,则会对大众工作和生活产生影响。就实体行为视角将可信计算组织定义为:实体行为反复完成预期目标,则为可信。然而,如今的可信计算机知识可以保证系统资源静止状态下的安全,但是在运行系统后,其软件行为可信性决定着终端计算机可信性。为此,本文提出一种基于区间数据场景级属性可信模型。

1 基于检查点分级属性可信评测模型

1.1 基于检查点分级属性可信评测模型的概述

可将软件行为轨迹进行两种情况的划分,即:运行轨迹和功能轨迹。运行轨迹描述软件轨迹的视角为流程,功能轨迹描述软件轨迹的视角是功能和场景信息,将检查点设置在软件行为轨迹中,通过对软件检查点、属性予以监控的方式对软件行为可信性进行检测[1]。……

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