def test_combine_secret_3_users():
""" Acceptance test with 3 users and not-full access groups """
secrets = [7, 9]
user_num = 4
dealer = Dealer(17, user_num, secrets, [[[1, 4]], [[2, 3, 4]]])
dealer.split_secrets()
print('Secrets shared!')
user_shares = []
# for user in dealer.access_structures[0][0]
for user in range(
user_num
): # here only users who are in access group should give their shares
share = dealer.get_user_key_share(user)
user_shares.append(share)
shares_for_secret_0 = [share[0] for share in user_shares]
#shares_for_secret_0 = [share1[0], share2[0]]it
print('Combine using shares: %r', shares_for_secret_0)
assert False
secret_key_0 = dealer.combine_secret_key(0, shares_for_secret_0)
assert_equal(secret_key_0.to_bytes(dealer.AES_KEY_LEN, byteorder='big'),
dealer.cipher_keys[0])
secret0_bytes = dealer.cipher_decrypt(dealer.public_shares_M[0],
secret_key_0)
secret0 = int.from_bytes(secret0_bytes, byteorder='big')
assert_equal(secret0, secrets[0])
def test_split_secret_keys():
dealer = Dealer(p256, n_participants, s_secrets, access_structures)
# this function invokes low-level methods
dealer.split_secrets()
print(dealer.key_shares)
assert_equal(len(dealer.key_shares), len(dealer.s_secrets))
def test_get_user_key_share():
dealer = Dealer(p256, n_participants, s_secrets, access_structures)
# this function invokes low-level methods
dealer.split_secrets()
user_share = dealer.get_user_key_share(1)
print('All key shares', dealer.key_shares)
print('User 0 key share', user_share)
assert_equal(user_share[0], dealer.key_shares[0][0][0])
# user 2 has internally index 1
assert_equal(dealer.get_user_key_share(2)[1], dealer.key_shares[1][0][1])
assert_equal(dealer.get_user_key_share(2)[0], dealer.key_shares[0][0][1])
def test_combine_secret_2_users():
""" Acceptance test with 2 users """
secrets = [7, 9]
dealer = Dealer(p256, 2, secrets, [[[1, 2]], [[1, 2]]])
dealer.split_secrets()
share1 = dealer.get_user_key_share(1)
share2 = dealer.get_user_key_share(2)
print('Secrets shared!')
shares_for_secret_0 = [share1[0], share2[0]]
print('Combine using shares: %r', shares_for_secret_0)
secret_key_0 = dealer.combine_secret_key(0, shares_for_secret_0)
assert_equal(secret_key_0.to_bytes(dealer.AES_KEY_LEN, byteorder='big'),
dealer.cipher_keys[0])
secret0_bytes = dealer.cipher_decrypt(dealer.public_shares_M[0],
secret_key_0)
secret0 = int.from_bytes(secret0_bytes, byteorder='big')
assert_equal(secret0, secrets[0])