|Title||Non-repudiation Protocols for Multiple Entities|
|Publication Type||Journal Article|
|Year of Publication||2004|
|Authors||J. A. Onieva, J. Zhou, and J. Lopez|
|Keywords||Electronic commerce, fair exchange, group communications, Non repudiation, Security protocol|
Non-repudiation is a security service that provides cryptographic evidence to support the settlement of disputes. In this paper, we introduce the state-of-the-art of non-repudiation protocols for multiple entities. We extend an existing multi-party non-repudiation (MPNR) protocol to allow an originator to send different messages to many recipients in a single transaction. We further propose an optimistic multi-party non-repudiation protocol for exchange of different messages. The performance of our protocols with enhanced functionalities is still promising in comparison with existing MPNR protocols.
Non-repudiation Protocols for Multiple Entities