SAODV

   The Secure Ad hoc On-Demand Distance Vector (SAODV) is an extension
   of the AODV routing protocol that can be used to protect the route
   discovery mechanism providing security features like integrity and
   authentication.

   The Simple Ad hoc Key Management (SAKM) is a key management system
   that allows to the nodes of an ad hoc network to use asymmetric
   cryptography with zero configuration. It is intended to be applied to
   MANET routing protocols that provide security features that require
   the use of asymmetric cryptography (like SAODV).

   The Secure Dynamic MANET On-Demand (SDYMO) Routing Protocol is an
   extension of the DYMO routing protocol that can be used to protect
   the route discovery mechanism providing security features like
   integrity and authentication.

  When a routing protocol for manet networks (mobile and ad hoc networks) does
  a route discovery, it does not discover the shortest route but the route
  through which the route request flood traveled faster. In addition, since
  nodes are moving, a route that was the shortest one at discovery time might
  stop being so in quite a short period of time. This causes, not only a
  much bigger end-to-end delay, but also more collisions and a faster power
  consumption.

  In order to avoid all the performance loss due to these problems, this paper
  develops a technique to periodically discover shortcuts to the active routes
  that can be used with any destination vector routing protocol. It also shows
  how the same mechanism can be used as a bidirectional route recovery
  mechanism.

MANET (mobile and ad hoc networks) are networks in which nodes are mobile and
link connectivity might change all the time. In this kind of networks key
management is an important and complex problem.

This paper studies how to design key management schemes for such networks
that will allow to identify nodes without the need of any kind of
certification authority. In addition, it presents a method to reduce the
delays in route establishment in cases where routing messages are signed and
need to be verified. Finally, it applies all these to SAODV (an extension of
the AODV MANET routing protocol that protects the route discovery mechanism
providing security features like integrity and authentication), and presents
results from simulations that show how this method provides the same security
with minimum impact in the network performance. Therefore, providing a more
complete solution to the problem of security in MANET networks.

We consider the problem of incorporating security mechanisms into routing
protocols for ad hoc networks. Canned security solutions like IPSec are not
applicable. We look at AODV in detail and develop a security mechanism to
protect its routing information.  We also briefly discuss whether our
techniques would also be applicable to other similar routing protocols and
about how a key management scheme could be used in conjunction with the
solution that we provide.

This article gives an overview of different approaches to provide security
features to routing protocols in mobile ad hoc networks (MANET). It also looks
to Secure AODV (an extension to AODV that provides security features) giving a
summary of its operation and talking about future enhancements to the protocol.