In this thesis, a design of a fully distributed security support for self-initializing and self-organizing ad hoc networks, based on dynamic general access structures is presented. Scalable and intrusion tolerant even against an adaptive design adversary, the design supports networks with dynamically changing topology, and seamlessly at that, in terms of enrolment and de-enrolment. Generalizations of the Paillier cryptosystem and an on-line/offline commitment scheme are developed in this thesis and together with the secret sharing concepts required, yielded new results in the areas that are critical to the design: cryptography and secret sharing. The thesis employs a top down approach to define the overall structure and the design components, and a bottom-up (evolutionary) approach to develop the design slowly, letting the experiences gained at each stage assist in determining the next stage of development. Finally a resolution was obtained, in the affirmative, of two open questions as to the obtention of a protocol for the generation of RSA keys without a trusted dealer for general access structures, and whether or not other cryptosystems could be employed in the key distribution scheme.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:494927 |
| Date | January 2009 |
| Creators | Obi, Obowoware O. |
| Publisher | University of Sussex |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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