What I was trying to demonstrate here is this: MC already supports automatic verification of hashes when the user presses <Enter> on an *.md5 file.
This is very convenient for someone who is obligated to use hash verification often. MC offers tools for this (Extension -> File Checksum) but it is a cumbersome implementation and not straigh forward as in other file managers. When you have to do it once is ok, but many times a day it is not. Too many clicks for something that could and should be done by simply pressing <Enter>.
So, to simplify the life of the user, since the functionality already works for md5, it would be nice to work for the other file extensions that contain precalculated hashes.
