[1]曲永花,窦万峰,徐育雄,等.一种面向软件服务的信任评估方法[J].南京师范大学学报(工程技术版),2010,10(02):063-67.
　Qu Yonghua,Dou Wanfeng,et al.A Method of Trust Valuation for Software Service[J].Journal of Nanjing Normal University(Engineering and Technology),2010,10(02):063-67.
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一种面向软件服务的信任评估方法
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
10卷
期数:
2010年02期
页码:
063-67
栏目:
出版日期:
2010-02-01

文章信息/Info

Title:
A Method of Trust Valuation for Software Service
作者:
曲永花1;  2;  窦万峰1;  2;  徐育雄1;  2
1. 南京师范大学计算机科学与技术学院, 江苏南京210097; 2. 江苏省信息安全与保密工程研究中心, 江苏南京210097
Author(s):
Qu Yonghua1; 2; Dou Wanfeng1; 2; Xu Yuxiong1; 2
1.School of Computer Science and Technology,Nanjing Normal University,Nanjing 210097,China;2.Jiangsu Research Center of Information Security & Privacy Technology,Nanjing 210097,China
关键词:
信任评估;  两级过滤;  软件服务
Keywords:
trust evalua tion;  tw o- leve l filte ring;  softw are serv ice
分类号:
TP393.08
摘要:
由于分布式系统没有授权的控制中心,对系统中可信的软件服务的请求存在一定的困难,需要用可行的方法对软件服务做出客观准确的信任评估.提出一种符合信任动态性的软件服务的直接信任度评估方法,引入衰减因子,使直接信任度在无论有无新的上下文被检测到的情况下都会随时间动态进化.在对全局信任度更新中同样引入衰减因子,以体现信任的动态性.针对推荐信任度评估,提出一个两级过滤TLF(Two-Level Filtering)方法,根据深度阈值和信任程度阈值尽可能减少请求的深度并摒弃危险的推荐,一定程度上降低了使用软件服务的潜在风险,同时也节约了信任评估的计算资源.
Abstract:
W ithout any authorized contro l cente rs in the d istr ibu ted system s, the difficulties always ex ist for requesting trusted softw are serv ice. It needs a feasiblem ethod tom ake an ob jective and accurate assessm ent for softw are serv ice. In this paper, a direct trust valua tion m e thod thatm eets the dynam ic nature of trust in the so ftw are serv ice is proposed. The m ethod com putes the trust deg ree by introducing an a ttenuation facto r that m akes the direct trust o f a softw are serv ice evo lve dynam ica lly w ith tim e nom a tter how a new case in the con tex t is detected. S im ilarly, th is a ttenuation factor is a lso used to compu te the g loba l trust to ad just the dynam ic chang e o f the trust. Fo r indirect assessm ent o f trust, am ethod o f two- level filter ing is sugg ested wh ich cuts down the request depth and dangerous recommendation acco rding to the th resho ld o f depth and trust. To a certa in ex tent, them ethod reduces the potentia l risk o f the use of so ftwa re serv ices and saves the compu ting resources o f the trust va luation at the sam e tim e.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省高校自然科学基金( 07KJD52112) . 通讯联系人: 窦万峰, 博士后, 副教授, 研究方向: 协同软件开发、计算机支持的协同工作等. E-m ail: douwanfeng@ n jnu. edu. cn
更新日期/Last Update: 2013-04-02