  Strangeness measurement at RHIC energies constitutes one of the favorite
theme of the STAR Collaboration. Besides the fact that strangeness enhancement
has been proposed as a quark gluon plasma signature, its production provides
various and relevant information about the collision evolution and especially
on the hadronization process. The investigation of short-lived strange
particles as well as their anti-particles and resonances allows an attempt of
characterization of the matter created in RHIC heavy ion collisions.
