def compare(self, y, x, e, v, n):
if BasicFunctions.fast_modulo_exponentiation(
y, 2, n) == x % n * BasicFunctions.fast_modulo_exponentiation(
v, e, n) % n:
return True
else:
return False
pass
def round_(self):
x = self.usrA.calcX(self.tc.n)
e = self.ursB.coinToss()
y = self.usrA.calcY(e, self.tc.n)
if self.compare(y, x, e, self.usrA.open, self.tc.n):
print("Left = ",
BasicFunctions.fast_modulo_exponentiation(y, 2, self.tc.n),
"Right =",
(x % self.tc.n) * BasicFunctions.fast_modulo_exponentiation(
self.usrA.open, e, self.tc.n) % self.tc.n)
print("e = ", e)
return True
elif not self.compare(y, x, e, self.usrA.open, self.tc.n):
print("Left = ",
BasicFunctions.fast_modulo_exponentiation(y, 2, self.tc.n),
"Right =",
(x % self.tc.n) * BasicFunctions.fast_modulo_exponentiation(
self.usrA.open, e, self.tc.n) % self.tc.n)
print("e = ", e)
return False
pass
def calcX(self, n):
self.r = random.randint(1, n - 1)
self.x = BasicFunctions.fast_modulo_exponentiation(self.r, 2, n)
return self.x
def calcY(self, e, n):
if self.secret is None or self.open is None:
self.secret = 100500
self.open = 100500
self.y = (self.r % n) * BasicFunctions.fast_modulo_exponentiation(self.secret, e, n) % n
return self.y
def initUserA(self, n):
self.secret = BasicFunctions.gen_g(n)
self.open = BasicFunctions.fast_modulo_exponentiation(self.secret, 2, n)
return self
