Abstract
The proactive optimized link state routing (OLSR) protocol for mobile
wireless ad hoc networks has no default security services. Three
different schemes have been proposed to protect the protocol. Even
though equal with regard to provided security services, the impact
on resource consumption diverge significantly due to the design choices.
This paper investigates and analyzes the recommended mechanisms with
regard to bandwidth consumption and delay. Mechanisms evaluated are
the utilization of separate signature messages versus directly signed
routing messages, routing message aggregation as a possible way of
reducing bandwidth consumption, times tamps versus sequence numbers
as the basis for replay protection and periodical versus on-demand
exchange of time information
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