The secure communication and storage schemes we propose,
are based on standard tools and techniques so that
they can be easy to implement and evaluate, but they are
also designed to be light and flexible enough to fit the
particular requirements that we will identify throughout the
rest of the paper. We have also conducted a first evaluation by
implementing a J2ME API based on the approach we propose
and using it to create a secure version of the openXdata client.
Preliminary tests are promising, and a full field tests is being
currently prepared. Some discussion on the API can be found
in [5].