This paper is aimed at the stipulations which arise in the traditional online auctions as a result of various anomalies in the reputation and trust calculation mechanism. We try to improve the scalability and efficiency of the online auctions by providing efficient trust management methodology considering several factors into consideration. A comparison between the performance of the auctions s...

Agent based online auctions have not yet become popular because they are not trustable. One of the major concerns in agent based online auctions is the shilling behavior problem, which makes winners have to pay more than what they should pay for auctioned items. In this paper, we propose a real-time trust management module for agent based online auction systems using rolebased access control me...

Trust Management (TM) is a novel flexible approach to access control in distributed systems, where the access control decisions are based on the policy statements, called credentials, made by different principals and stored in a distributed manner. In this chapter we present an introduction to TM focusing on the role-based trust-management framework RT. In particular, we focus on RT0, the simpl...

P2P communities can be seen as truly Distributed Computing applications in which group members communicate with one another to exchange information. The authors consider security issues in Peer to Peer Networks. For secure exchange of data between the group members the authors present a cryptography protocol and an Identity mechanism which can able to check even the Trust of the Peers based on ...

This article describes the central terminology of trust management and identi es three categories of tasks required of a trust management system, based on three high-level use cases: the initialization, use and evolution of trust relationships. Some di cult research problems are identi ed from the eld.

The aim of this study is to provide an overview of the different ways to introduce trust management mechanisms in logic-based computing systems (especially multi-agent systems), in order to deal with security problems. This study includes a survey of recent publications in this research area, as well as a critical comparison between them. We try here to put a stress on their common aspects, the...

MoR-Trust is a purely decentralized peer-to-peer trust management system, targeted towards networks and applications supporting transactions or collaborations of a quantitative nature. MoR-Trust is based on the notion of expressing trust in terms of monetary units, thus directly coupling the trust estimates circulated in the network with the values of the transactions taking place and their out...

Trust Management is an approach to construct and interpret the trust relationships among public-keys that are used to mediate security-critical actions. Cryptographic credentials are used to specify delegation of authorisation among public keys. Existing trust management schemes are operational in nature, defining security in terms of specific controls such as delegation chains, threshold schem...

The success of recent massive Internet-based attacks and frauds targeting financial institutions highlights the inadequacy of these institutions when facing such threats in isolation. There is a need for financial players to coordinate their efforts by sharing and correlating suspicious activities occurring at multiple, geographically distributed sites. CoMiFin, an EU funded project, is develop...

Trust management has been addressed recently to provide networked systems with the appropriate mechanisms to perform any conformance checking with respect to a security policy in e-business and e-government. Trust management is an important issue for the deployment and success of e-government. Besides, public-key infrastructures manage trust in data exchanges through email, over the web and usi...