typeset -a compress_props=('on' 'off' 'lzjb' 'gzip' 'gzip-1' 'gzip-2' 'gzip-3'
'gzip-4' 'gzip-5' 'gzip-6' 'gzip-7' 'gzip-8' 'gzip-9' 'zle')
-typeset -a checksum_props=('on' 'off' 'fletcher2' 'fletcher4' 'sha256')
+typeset -a checksum_props=('on' 'off' 'fletcher2' 'fletcher4' 'sha256' 'sha512'
+ 'edonr' 'skein' 'noparity')
#
# Given the property array passed in, return 'num_props' elements to the