def SignGen(message, E, sA):
order = E.order
for i in range(1, 10):
k = ecrand.rnd(order)
s, r = do_sign(message, sA, k, E)
if (s and r):
return s, r
def sign(self, msg, pv_key):
""" Signs a message hash.
Args:
hash_msg (bytes) : the message hash to sign
pv_key (ecpy.keys.ECPrivateKey): key to use for signing
"""
order = pv_key.curve.order
for i in range(1,self.maxtries):
k = ecrand.rnd(order)
sig = self._do_sign(msg, pv_key,k)
if sig:
return sig
return None
def generate_random_scalar():
order = CURVE.order
return ecrand.rnd(order)
def generate_key(self, curve): # curve : curve 이름
cv = Curve.get_curve(curve)
pv_key = ECPrivateKey(rnd(cv.order), cv)
pu_key = pv_key.get_public_key()
return (pu_key, pv_key, cv, ECDSA())