def randomQR(n):
return cmod.random(n)**2
def _genX(cls, p_prime, q_prime):
maxValue = p_prime * q_prime - 1
minValue = 2
return cmod.integer(cmod.random(maxValue - minValue)) + minValue
def generateParams(cls) -> PublicParams:
rho, b, Gamma = PublicParamsBuilder._genRhoBGamma()
g = PublicParamsBuilder._genG(Gamma, b)
r = cmod.random(rho)
h = g**r
return PublicParams(Gamma, rho, g, h)
def genX(self):
maxValue = self.p_prime * self.q_prime - 1
minValue = 2
return cmod.integer(cmod.random(maxValue - minValue)) + minValue
def _genG(cls, Gamma, b):
while True:
gprime = cmod.random(Gamma)
g = (gprime**b) % Gamma
if g != 1:
return g