18
WSN Authentication using RF Fingerprints (D.
Knox and T. Kunz)
RF
Fingerprint Exchange
§Objective:
Exchange RF Fingerprint information in a confidential fashion
only with active participants to improve accuracy and consistency
–Encryption serves
more to commit
(in a non-repudiable fashion) participants using both
their secret keys and their RF Fingerprints simultaneously
–Encrypted
communications serves a similar purpose for their guarantors
1.Nodes
encrypt communications using the shared conference key value
2.Nodes
broadcast the (first round) FP values that were gathered for each
neighbour
3.All
nodes check to make sure that the values are consistent with their
hashes
4.Nodes
also record a third (and final) RF Fingerprint value