CrypTeam's Cryption mIRC Snippet (Kyros, ignorafk & nocure)

alias cryption {
  var %n = 1, %crypt50 = ""
  if ($2 == e) {
    while ($mid($1,%n,1)) { %crypt50 = %crypt50 $+ $iif($mid($1,%n,1) == $chr(32),$chr(66),$chr($calc($asc($mid($1,%n,1)) + 50))) | inc %n  }
  }
  else if ($2 == d) {
    while ($mid($1,%n,1)) { %crypt50 = %crypt50 $+ $iif($mid($1,%n,1) == $chr(66),-,$chr($calc($asc($mid($1,%n,1)) - 50))) | inc %n }
  }
  else { echo -a * Invalid Accepted Parameter }
  return %crypt50
}