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2009 13th International Conference on Computer Supported Cooperative Work in Design
Encrypted certified trust in multi-agent system
Santiago, Chile
April 22-April 24
ISBN: 978-1-4244-3534-0
Vanderson Botelho, PUCPR, Pontifical Catholic University of Paraná, PPGIA, Graduate Program on Applied Computer Science, R. Imaculada Conceiçëo, 1155, Curitiba PR Brazil
Fabricio Enembreck, PUCPR, Pontifical Catholic University of Paraná, PPGIA, Graduate Program on Applied Computer Science, R. Imaculada Conceiçëo, 1155, Curitiba PR Brazil
Braulio C. Avila, PUCPR, Pontifical Catholic University of Paraná, PPGIA, Graduate Program on Applied Computer Science, R. Imaculada Conceiçëo, 1155, Curitiba PR Brazil
Hilton de Azevedo, UTFPR, Federal Technological University of Paraná, PPGTE, Graduate Program on Technology, Av. 7 de Setembro, 3165, Curitiba, PR, Brazil
Edson E. Scalabrin, PUCPR, Pontifical Catholic University of Paraná, PPGIA, Graduate Program on Applied Computer Science, R. Imaculada Conceiçëo, 1155, Curitiba PR Brazil
We present a model for the certification of trust in multi-agent systems based on encryption. The objective is to raise the level of efficiency that client agents have when contracting specialized service agents. We make three hypotheses: (i) client agents are able to measure and inform the quality of a service they receive from a service agent; (ii) distributed certificate control is possible because every service agent stores the certificates it receives from its client agents and, (iii) the content of a certificate can be considered safe as long as the public and private keys used to encrypt the certificate remain safe. This approach reduces some weak points of trust models that rely on the direct interaction between service and client agents (direct trust) or those that rely on testimony obtained from client agents (propagated trust). Simulation showed that encrypted certificates of trust improved the efficiency of client agents when choosing their service provider agents. The reason seems to be that the reputation of a given service provider agent is based on the reputation it has among the totality of client agents that used its services.
Citation:
Vanderson Botelho, Fabricio Enembreck, Braulio C. Avila, Hilton de Azevedo, Edson E. Scalabrin, "Encrypted certified trust in multi-agent system," cscwd, pp.227-232, 2009 13th International Conference on Computer Supported Cooperative Work in Design, 2009
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