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A Method of Trust Valuation for Software Service(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年02期
Page:
63-67
Research Field:
Publishing date:

Info

Title:
A Method of Trust Valuation for Software Service
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
Keywords:
trust evalua tion;  tw o- leve l filte ring;  softw are serv ice
PACS:
TP393.08
DOI:
-
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.

References:

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Last Update: 2013-04-02