*3.2.5.2 Secure data exchange phase*

To send data M, the primary SN signs M and generates perturb to secure M. It then encrypts the obfuscated message packet as *σ*, using its node-destination shared key *ϕsn*!*ds*. The message packet *σ* contains the signature *δ*, perturbed data *Pp*, pseudonyms of the primary source node *Fsn*, and destination node *Fds*.
