We discuss the error reconciliation phase in quantum key distribution (QKD)
and analyse a simple scheme in which blocks with bad parity (that is, blocks
containing an odd number of errors) are discarded. We predict the performance
of this scheme and show, using a simulation, that the prediction is accurate.Comment: 19 pages. Presented at the 53rd Annual Meeting of the Australian
  Mathematical Society, Adelaide, Oct 1, 2009. See also
  http://wwwmaths.anu.edu.au/~brent/pub/pub239.htm