def L(self, u, n):
return integer(int(u - 1)) / n
def encode(self, modulus, message):
# takes a string and represents as a bytes object
elem = integer(message)
return elem % modulus
def randomize(self, r): # need to provide random value
lhs = dict.__getitem__(self, self.key)
rhs = (integer(r) ** self.pk['n']) % self.pk['n2']
return Ciphertext({self.key:(lhs * rhs) % self.pk['n2']})