TinyKey ◾ 243
of ROM and 1227 bytes of RAM compared to the 13026 bytes of ROM and 843
bytes of RAM required by the same application without TinyKey.
We can notice that significant sources of memory usage are the Skipjack imple-
mentation (1786 bytes of ROM used) and the replay attacks protection module
(400 bytes of RAM, 4 bytes for each node in the network).
9.8 Future Work
As future directions of our research, we are currently focusing on the following
aspects.
TinyKey currently relies on the distribution abstractions provided by
TeenyLIME. Although TeenyLIME provides the advantages typical of shared tuple
spaces, is also limited in terms of flexibility to be employed in WSNs where actuator
nodes play an important role. In this respect, we a ...