Abstract:
Over the past few years, there has been increasing interest in utilizing Personal Area Networks (PANs) to offer users innovative and personalized services. 
The PAN itself is built upon an ad-hoc network where devices trust their neighbors to route their packets. The cooperative nature of ad-hoc networks
 allows malicious nodes to easily cripple the network by inserting false route information, replaying old messages, modifying messages of other nodes, etc. 
An applicable area still under research is secure routing protocols for ad-hoc networks. To achieve availability in the PAN, the routing protocol used
 must be robust against both dynamically changing topology and malicious attacks.
However, the heterogeneous nature of Personal Network (PN) devices means that traditional security mechanisms are too resource intensive
 to be sufficient by themselves.
This presentation describes a new ad-hoc secure routing protocol for Personal Networks (PNs), suitable in a *limited* multi-hop scenario.
This protocol is based on ADOV and relies on efficient cryptographic primitives to safeguard the security and privacy of PN users. Following that, 
a number of attacks in the area of ad-hoc networks are discussed, and it is shown that the new algorithm protects against multiple un-coordinated
 active attackers, in spite of compromised nodes in the network.
Key words: Ad-hoc routing, secure routing, AODV, PAN, hash chains.