Development of Consensus Trust-based Mechanism with Expulsion of Malicious Nodes for Permissioned Private Blockchain Networks
Main Article Content
Abstract
The main objective of this paper is to propose a consensus mechanism, based on trust, for permissioned private blockchain networks. The proposal shows how the use of the cooperativeness of the network nodes is fundamental for the development of a control system, in which the behavior of the nodes is monitored by other nodes. The monitoring of the reputation score is constant in the network and through voting, the node considered malicious to the network is expelled. For the mechanism to work, it is necessary to define rigidity criteria to be applied to actions identified as malicious what are the confidence threshold adopted and what grade receives a node that has not yet been evaluated by the network. Also, determine how many nodes are needed to monitor the behavior of a Malicious Node (MN), in order to identify and expel it more efficiently. The objectives of this work are also to present the performance evaluation of two platforms for the development of permissioned private blockchains in relation to the validation time of a transaction, the response time to chain searches and the transaction mining time and to propose a use case of blockchain technology for application in the storage of electronic medical records in a hybrid approach, which combines the application of public key infrastructure with blockchain technology, to comply with the storage requirements of medical data and offer patient-centric data privacy and access control.
Article Details
Issue
Section
Articles
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms: a. Authors retain copyright and grant the journal right of first publication, with the work two years after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).