blob: 79fa928ce322331731152d20abb10123c507d067 [file] [log] [blame]
#!/usr/bin/env python3
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import unittest
import json
import amcl_mpc
class TestS(unittest.TestCase):
"""Tests MPC S"""
def setUp(self):
seed_hex = "78d0fb6705ce77dee47d03eb5b9c5d30"
seed = bytes.fromhex(seed_hex)
self.rng = amcl_mpc.create_csprng(seed)
def test_1(self):
"""test_1 Test Vector test"""
with open("S.json", "r") as f:
vectors = json.load(f)
for vector in vectors:
print(f"Test vector {vector['TEST']}")
test = {}
for key, val in vector.items():
if key != "TEST":
#print(f"{key} = {val}\n")
test[key] = bytes.fromhex(val)
PUB1, PRIV1 = amcl_mpc.paillier_key_pair(self.rng, test['P1'], test['Q1'])
PUB2, PRIV2 = amcl_mpc.paillier_key_pair(self.rng, test['P2'], test['Q2'])
# ALPHA1 + BETA2 = K1 * W2
ca11 = amcl_mpc.mpc_mta_client1(self.rng, PUB1, test['K1'], test['R11'])
cb12, beta2 = amcl_mpc.mpc_mta_server(self.rng, PUB1, test['W2'], ca11, test['Z12'], test['R12'])
alpha1 = amcl_mpc.mpc_mta_client2(PRIV1, cb12)
self.assertEqual(vector['ALPHA1'], alpha1.hex())
self.assertEqual(vector['BETA2'], beta2.hex())
# ALPHA2 + BETA1 = K2 * W1
ca22 = amcl_mpc.mpc_mta_client1(self.rng, PUB2, test['K2'], test['R22'])
cb21, beta1 = amcl_mpc.mpc_mta_server(self.rng, PUB2, test['W1'], ca22, test['Z21'], test['R21'])
alpha2 = amcl_mpc.mpc_mta_client2(PRIV2, cb21)
self.assertEqual(vector['ALPHA2'], alpha2.hex())
self.assertEqual(vector['BETA1'], beta1.hex())
# sum1 = K1.W1 + alpha1 + beta1
SUM1 = amcl_mpc.mpc_sum_mta(test['K1'], test['W1'], alpha1, beta1)
self.assertEqual(vector['SUM1'], SUM1.hex())
# sum2 = K2.W2 + alpha2 + beta2
SUM2 = amcl_mpc.mpc_sum_mta(test['K2'], test['W2'], alpha2, beta2)
self.assertEqual(vector['SUM2'], SUM2.hex())
# Calculate the message hash
HM = amcl_mpc.mpc_hash(test['M'])
# Calculate the S1 signature component
rc, SIG_S1 = amcl_mpc.mpc_s(HM, test['SIG_R'], test['K1'], SUM1)
self.assertEqual(vector['SIG_S1'], SIG_S1.hex())
self.assertEqual(rc, 0)
# Calculate the S2 signature component
rc, SIG_S2 = amcl_mpc.mpc_s(HM, test['SIG_R'], test['K2'], SUM2)
self.assertEqual(vector['SIG_S2'], SIG_S2.hex())
self.assertEqual(rc, 0)
# Sum S signature component
SIG_S = amcl_mpc.mpc_sum_s(SIG_S1, SIG_S2)
self.assertEqual(vector['SIG_S'], SIG_S.hex())
self.assertEqual(rc, 0)
if __name__ == '__main__':
# Run tests