def testUpdateLFSR(self):
state = 53
poly = 105
n = 7
new_state = tp1.update_LFSR(state, poly, n)[1]
self.assertEqual(tp1.update_LFSR(state, poly, n), (1, 26))
self.assertEqual(tp1.update_LFSR(new_state, poly, n), (0, 13))
def testOutputAllLfsr(self):
state = tp1.getState1(2015686042)
output = 0
for i in range(40):
outputLfsr, state = tp1.update_LFSR(state, tp1.getlfsr1()[1], tp1.getlfsr1()[0])
output ^= outputLfsr << i
self.assertEqual(output, int("0101100110100010001011010010111010011000"[::-1], 2))
state = tp1.getState2(2015686042)
output = 0
for i in range(40):
outputLfsr, state = tp1.update_LFSR(state, tp1.getlfsr2()[1], tp1.getlfsr2()[0])
output ^= outputLfsr << i
self.assertEqual(output, int("1101110010011100101111001011100111101100"[::-1], 2))
state = tp1.getState3(2015686042)
output = 0
for i in range(40):
outputLfsr, state = tp1.update_LFSR(state, tp1.getlfsr3()[1], tp1.getlfsr3()[0])
output ^= outputLfsr << i
self.assertEqual(output, int("1000001111001101011010101001100110011011"[::-1], 2))
def testGeneratorWithLFSR1(self):
cle = random.randint(0, 1 << 33)
res = tp1.Generator(cle, 300)
taille_lfsr1 = tp1.getlfsr1()[0]
etat_initial_aleatoire = 0
for i in range(0, taille_lfsr1):
etat_initial_aleatoire += ((cle >> i) & 1) << i
countTrueTest = 0
etat = 0
while etat < (1 << taille_lfsr1):
lfsr_state = etat
lfsr1_300bits = 0
for j in range(300):
output, lfsr_state = tp1.update_LFSR(lfsr_state, tp1.getlfsr1()[1], taille_lfsr1)
lfsr1_300bits += output << j
if etat != etat_initial_aleatoire:
self.assertFalse(tp1.statistical_test(lfsr1_300bits, res, 300))
else:
self.assertTrue(tp1.statistical_test(lfsr1_300bits, res, 300))
countTrueTest += 1
etat += 1
if countTrueTest != 1:
self.fail("Le nombre de test true devrait etre 1 or il est egal a " + str(countTrueTest))
