Taxonomy of Security Protocols ◾ 345
service principals reside. Additionally, we assume N
C
clients generating requests
to each of these service principals according to a Poisson distribution with a mean
rate of 1 request per minute. On the other hand, for the parameterization of the
Ladon protocol and the IEEE 802.15.4 link layer, we select L = 100 as the length
of the one-way key chain used to implicitly authenticate LDN_AP_IND messages
and default values for the IEEE 802.15.4 backoff process. For the energy model,
we consider the instantaneous power consumptions specified in the datasheet of
the MEMSIC TelosB mote (TPR2420CA) powered with a 3 V power supply. We
also consider that the client principal executes cryptographic operations at a ...