Multi-Party Trust Computation in Decentralized Environments

In this paper, we describe a decentralized privacy-preserving protocol for securely casting trust ratings in distributed reputation systems. Our protocol allows n participants to cast their votes in a way that preserves the privacy of individual values against both internal and external attacks. The protocol is coupled with an extensive theoretical analysis in which we formally prove that our protocol is resistant to collusion against as many as n-1 corrupted nodes in the semi-honest model. The behavior of our protocol is tested in a real P2P network by measuring its communication delay and processing overhead. The experimental results uncover the advantages of our protocol over previous works in the area; without sacrificing security, our decentralized protocol is shown to be almost one order of magnitude faster than the previous best protocol for providing anonymous feedback.

Introducing Corporate Reputation Continuity to Support Organizational Resilience Against Crises

As Corporate Reputation (CR) evolves into an important asset for organizations, crises and disasters stand as threats to the preservation of the reputation capital since they usually result to negative projections to their audiences and to problematic evaluations by their stakeholders. Viewing CR as the accumulated trust and positive evaluations of the stakeholders, this paper proposes a conceptual and normative framework for Reputation Continuity, which enhances the ability of organizations to preserve their reputation, instead of working for its recovery in the post-crisis period. In our approach, we propose a process of maintaining trusted links, instead of restoring them and establishing a reputation resilient organization, instead of one struggling to recover from reputation losses, after the crisis has emerged. Working closely with stakeholders during the crisis, injecting a sense of normality continuity through effective leadership and mitigating image problems are seen as critical concerns, alongside a set of managerial practices to be followed. Ultimately, it is argued that, the value-based and strategically integrated view of Business Continuity must be enhanced and supported by Reputation Continuity activities.