  We propose a topological field theory for a spin-less two-dimensional chiral
superconductor that contains fundamental Majorana fields. Due to a fermionic
gauge symmetry, the Majorana modes survive as dynamical degrees of freedom only
at magnetic vortex cores, and on edges. We argue that these modes have the
topological properties pertinent to a p-wave superconductor including the
non-abelian braiding statistics, and support this claim by calculating the
ground state degeneracy on a torus. We also briefly discuss the connection to
the Moore-Read Pfaffian quantum Hall state, and extensions to the spinful case
and to three-dimensonal topological superconductors.
