def __call__(self, c):
c = ord(c)<EOL>k = self.key2 | <NUM_LIT:2><EOL>c = c ^ (((k * (k^<NUM_LIT:1>)) >> <NUM_LIT:8>) & <NUM_LIT:255>)<EOL>c = chr(c)<EOL>self._UpdateKeys(c)<EOL>return c<EOL>
Decrypt a single character.