The Schwarzschild black hole can be viewed as the special case of the marginally bound Lema\^ıtre-Tolman-Bondi models of dust collapse which corresponds to a constant mass function. We have presented a midi-superspace quantization of this model for an arbitrary mass-function in a separate publication. In this communication we show that our solution leads both to Bekenstein's area spectrum for black holes as well as to the black hole entropy, which, in this context, is naturally interpreted as the loss of information of the original matter distribution within the collapsing dust cloud.

LaTeX file, 6 pages, 1 figure, Paper re-written into sections, some references added, some elaborations, conclusions unchanged, to appear in Physical Review D