Hop chains: Secure routing and the establishment of distinct identities
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- Hop chains: Secure routing and the establishment of distinct identities
- Bazzi, Rida A.; Choi, Young-Ri; Gouda, Mohamed G.
- Byzantine; Computer networks; Routing; Security; Sybil attack
- Issue Date
- ELSEVIER SCIENCE BV
- THEORETICAL COMPUTER SCIENCE, v.410, no.6-7, pp.467 - 480
- We present a secure routing protocol that is immune to Sybil attacks and that can tolerate collusion of Byzantine routers. It can tolerate either initial collusion of Byzantine routers or runtime collusion of non-adjacent Byzantine routers, both in the absence of runtime collusion between adjacent routers. For these settings, the calculated distance from a destination to a node is not smaller than the actual shortest distance from the destination to the node. The protocol can also simultaneously tolerate initial collusion of Byzantine routers and runtime collusion of adjacent Byzantine routers but in the absence of runtime collusion between non-adjacent routers. For this setting, it guarantees a bound on the difference between the calculated distance and the actual shortest distance. The bound depends on the number of Byzantine routers on a path. The protocol makes very weak timing assumptions and requires synchronization only between neighbors or second neighbors. We propose to use this protocol for secure localization of routers using hop-count distances, which can be then used as a proof of identity of nodes.
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