CÓRDOVA MORALES David Alexis
Supervision : Thi-Mai-Trang NGUYEN
Co-supervision : PUJOLLE Guy
Blockchain application for Mesh and Ad hoc networks
Blockchain is a technology that makes it possible to maintain a single register of information in a distributed and decentralized way. However, to benefit from it, it is necessary to rely on reliable connectivity as provided by the Internet. This is not the case in mesh and mobile ad hoc networks because it is often required to deploy its own infrastructure and its own services where operators are not available. In this thesis, we propose Blockgraph, a blockchain-like technology capable of dealing with network partitions. With mobility, partitions in the network result in forks which are traditionally resolved by choosing the longest chain and ignoring other competing chains. We have developed a new data structure that takes the form of a directed acyclic graph, which inherits all the security properties of the blockchain. In Blockgraph, these concurrent chains created by the effect of network partitions are considered legitimate chains carrying information related to a given network partition. We also proposed C4M, a consensus algorithm inspired by RAFT, able to be tolerant to network partitions by performing node membership changes automatically.
Defence : 11/30/2022 - 10h - Campus Jussieu, salle Gérard Noguez (24-25/405)
Jury members :
Stefano SECCI, Professeur au Conservatoire National des Arts et Métiers [Rapporteur]
Diogo MENEZES F. M., Professeur à Universidade Federal Fluminense (Brésil) [Rapporteur]
Anne FLADENMULLER, Professeur à Sorbonne Université
Nadjib ACHIR, Maître de Conférences HDR à l'Université Sorbonne Paris Nord
Pedro B. VELLOSO, Maître de conférences au Conservatoire National des Arts et Métiers
Guy PUJOLLE, Professeur émérite de Sorbonne Université
Thi-Mai-Trang NGUYEN, Professeur à Université Sorbonne Paris Nord
Current position : - Sorbonne Université
2020-2022 Publications
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2022
- D. Córdova Morales : “Blockchain application for Mesh and Ad hoc networks”, thesis, defence 11/30/2022, supervision Nguyen, Thi-Mai-Trang, co-supervision : Pujolle, Guy (2022)
- D. Cordova Morales, P. Velloso, A. Laube, Th.‑M.‑T. Nguyen, G. Pujolle : “A performance evaluation of C4M consensus algorithm”, Annals of Telecommunications - annales des télécommunications, (Springer) (2022)
- D. Cordova Morales, Th.‑M.‑T. Nguyen, P. Braconnot‑Velloso, G. Pujolle : “A Preliminary Assessment of Blockgraph - a Mobility-Aware Solution to Secure 6G Mesh Networks”, 2022 1st International Conference on 6G Networking (6GNet), Paris, France, pp. 1-4, (IEEE) (2022)
- D. Córdova Morales, P. Braconnot‑Velloso, A. Guerre, Th.‑M.‑T. Nguyen, G. Pujolle, Kh. Al Agha, G. Dua : “Blockgraph : une Structure de Type Blockchain Tolérante aux Partitions pour les MANET”, RESSI 2022 : Rendez-vous de la Recherche et de l'Enseignement de la Sécurité des Systèmes d'Information, Chambon-sur-Lac, France (2022)
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2021
- D. Cordova Morales, P. Velloso, A. Laube, Th.‑M.‑T. Nguyen, G. Pujolle : “C4M: A Partition-Robust Consensus Algorithm for Blockgraph in Mesh Network”, 2021 5th Cyber Security in Networking Conference (CSNet), Abu Dhabi, United Arab Emirates, pp. 82-89, (IEEE) (2021)
- P. Braconnot‑Velloso, D. Cordova Morales, Th.‑M.‑T. Nguyen, G. Pujolle : “State of the art: Cross chain communications”, 2021 5th Cyber Security in Networking Conference (CSNet), Abu Dhabi, United Arab Emirates, pp. 76-81, (IEEE) (2021)
- D. Cordova Morales, P. Velloso, A. Guerre, Th.‑M.‑T. Nguyen, G. Pujolle, Kh. Alagha, G. Dua : “Blockgraph proof-of-concept”, SIGCOMM '21: Proceedings of the SIGCOMM '21 Poster and Demo Sessions, Virtual Event, United States, pp. 82-84, (ACM) (2021)
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2020
- D. Cordova, A. Laube, Th.‑M.‑T. Nguyen, G. Pujolle : “Blockgraph: A Blockchain for Mobile Ad Hoc Networks”, 4th Cyber Security in Networking Conference, Lausanne, Switzerland (2020)