Ecole d'ingénieur et centre de recherche en Sciences du numérique

Bootstrapping security associations in content-based opportunistic networks

Shikfa, Abdullatif;Önen, Melek;Molva, Refik

Research Report RR-09-233

      Key management in opportunistic networks is a challenging problem that cannot be solved with existing solutions. In this paper, we analyze the requirements of key management in the framework of opportunistic networks and content-based forwarding. We then present a specific key management that enables the bootstrapping of local, topology-dependent security associations between a node and its neighbors along with the discovery of the neighborhood topology, thanks to the use of certificates and signatures chains. This key management solution relies on two phases: a first step where nodes are connected to an Identity Manager that provides them with unique pseudonyms to prevent Sybil attacks, and a second step where the opportunistic communication and the security associations bootstrapping take place without the need for the Identity Manager. This solution with an offline Identity Manager is well-suited to opportunistic networks and can be used as an anchor to provide end-to-end confidentiality based on local and self-organized key management.

Document Bibtex

Titre:Bootstrapping security associations in content-based opportunistic networks
Département:Sécurité numérique
Eurecom ref:2851
Copyright: © EURECOM. Personal use of this material is permitted. The definitive version of this paper was published in Research Report RR-09-233 and is available at :
Bibtex: @techreport{EURECOM+2851, year = {2009}, title = {{B}ootstrapping security associations in content-based opportunistic networks}, author = {{S}hikfa, {A}bdullatif and {\"{O}}nen, {M}elek and {M}olva, {R}efik }, number = {EURECOM+2851}, month = {07}, institution = {Eurecom}, url = {},, }
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