Worm-IT - A wormhole-based intrusion-tolerant group communication system

  • Authors:

  • Miguel Correia;Nuno Ferreira Neves;Lau Cheuk Lung;Paulo Veríssimo

  • Affiliations:

  • Faculdade de Ciências da Universidade de Lisboa, Departamento de Informática, Campo Grande, Bloco C6, Piso 3, 1749-016 Lisboa, Portugal;Faculdade de Ciências da Universidade de Lisboa, Departamento de Informática, Campo Grande, Bloco C6, Piso 3, 1749-016 Lisboa, Portugal;Programa de Pós-Graduação em Informática Aplicada, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, 80.215-901, Brazil;Faculdade de Ciências da Universidade de Lisboa, Departamento de Informática, Campo Grande, Bloco C6, Piso 3, 1749-016 Lisboa, Portugal

  • Venue:
  • Journal of Systems and Software
  • Year:
  • 2007

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Abstract

This paper presents Worm-IT, a new intrusion-tolerant group communication system with a membership service and a view-synchronous atomic multicast primitive. The system is intrusion-tolerant in the sense that it behaves correctly even if some nodes are corrupted and become malicious. It is based on a novel approach that enhances the environment with a special secure distributed component used by the protocols to execute securely a few crucial operations. Using this approach, we manage to bring together two important features: Worm-IT tolerates the maximum number of malicious members possible; it does not have to detect the failure of primary-members, a problem in previous intrusion-tolerant group communication systems.