>>> p, q, a, b, x, y = CURVE_PARAMS["GostR3410_2001_TestParamSet"]
>>> curve = GOST3410Curve(p, q, a, b, x, y)
- >>> priv = bytes2long(urandom(32))
- >>> signature = sign(curve, priv, GOST341194(data).digest())
- >>> pubX, pubY = public_key(curve, priv)
- >>> verify(curve, pubX, pubY, GOST341194(data).digest(), signature)
+ >>> prv = prv_unmarshal(urandom(32))
+ >>> signature = sign(curve, prv, GOST341194(data).digest())
+ >>> pub = public_key(curve, prv)
+ >>> verify(curve, pub, GOST341194(data).digest(), signature)
True
"""
def __init__(self, p, q, a, b, x, y):
return long2bytes(s, size) + long2bytes(r, size)
-def verify(curve, pubkeyX, pubkeyY, digest, signature, mode=2001):
+def verify(curve, pub, digest, signature, mode=2001):
""" Verify provided digest with the signature
:param GOST3410Curve curve: curve to use
- :param long pubkeyX: public key's X
- :param long pubkeyY: public key's Y
+ :type pub: (long, long)
:param digest: digest needed to check
:type digest: bytes, 32 or 64 bytes
:param signature: signature to verify with
z1 = s * v % q
z2 = q - r * v % q
p1x, p1y = curve.exp(z1)
- q1x, q1y = curve.exp(z2, pubkeyX, pubkeyY)
+ q1x, q1y = curve.exp(z2, pub[0], pub[1])
lm = q1x - p1x
if lm < 0:
lm += p
self.assertEqual(long2bytes(pubX), public_key_x)
self.assertEqual(long2bytes(pubY), public_key_y)
s = sign(c, private_key, digest)
- self.assertTrue(verify(c, pubX, pubY, digest, s))
- self.assertTrue(verify(c, pubX, pubY, digest, signature))
+ self.assertTrue(verify(c, (pubX, pubY), digest, s))
+ self.assertTrue(verify(c, (pubX, pubY), digest, signature))
def test_sequence(self):
c = GOST3410Curve(*CURVE_PARAMS["GostR3410_2001_TestParamSet"])
for _ in range(20):
digest = urandom(32)
s = sign(c, private_key, digest, mode=2001)
- self.assertTrue(verify(c, pubX, pubY, digest, s, mode=2001))
+ self.assertTrue(verify(c, (pubX, pubY), digest, s, mode=2001))
class Test34102012(TestCase):
self.assertEqual(long2bytes(pubX), public_key_x)
self.assertEqual(long2bytes(pubY), public_key_y)
s = sign(c, private_key, digest, mode=2012)
- self.assertTrue(verify(c, pubX, pubY, digest, s, mode=2012))
- self.assertTrue(verify(c, pubX, pubY, digest, signature, mode=2012))
+ self.assertTrue(verify(c, (pubX, pubY), digest, s, mode=2012))
+ self.assertTrue(verify(c, (pubX, pubY), digest, signature, mode=2012))
def test_sequence(self):
c = GOST3410Curve(*CURVE_PARAMS["GostR3410_2012_TC26_ParamSetA"])
for _ in range(20):
digest = urandom(64)
s = sign(c, private_key, digest, mode=2012)
- self.assertTrue(verify(c, pubX, pubY, digest, s, mode=2012))
+ self.assertTrue(verify(c, (pubX, pubY), digest, s, mode=2012))
self.assertNotIn(b"\x00" * 8, s)