entropygetter.py

#!/usr/bin/env python3

from pymouse import PyMouseEvent
import hashlib
import struct

class Entropist(PyMouseEvent):

    def __init__(self, hashfunc=hashlib.sha512):
        super(Entropist, self).__init__()
        self.verbose = False
        self.hash = hashfunc()
        self.THRESHOLD = 1024 * self.hash.block_size / 8
        self.total = 0
        self.entropy = bytearray()
        self.last_x = 0
        self.last_y = 0

    def move(self, x, y):
        data = struct.pack("ff", self.last_x - x, self.last_y - y)
        self.last_x, self.last_y = x, y
        self.hash.update(data)
        self.total += len(data)
        if self.verbose:
            print('\r> {} {}'.format(self.hash.hexdigest(), self.total), end='')
        if self.total > self.THRESHOLD:
            self.total = 0
            self.entropy += self.hash.digest()
            if self.verbose:
                print('\n{}\n'.format(self.entropy.hex()))
            else:
                print(self.hash.hexdigest(), end='', flush=True)


E = Entropist(hashlib.sha512)
E.run()