def test_bad_configuration_threshold():
num_players = 2
reconstruction_threshold = 5
max_secret_length = len(secret)
with pytest.raises(ValueError):
sss.share_secret(num_players, reconstruction_threshold, max_secret_length, secret)
def test_bad_configuration_prime_small_secret():
num_players = 5
reconstruction_threshold = 2
bad_secret = '\xFF\xFF'
max_secret_length = len(bad_secret) - 1
with pytest.raises(ValueError):
sss.share_secret(num_players, reconstruction_threshold, max_secret_length, bad_secret)
def share_and_break(num_players, reconstruction_threshold, secret, end, num_broken):
max_secret_length = len(secret)
shares = sss.share_secret(num_players, reconstruction_threshold, max_secret_length, secret)
broken_shares = []
for share in shares[:num_broken]:
if share.startswith('1'):
broken_shares.append('2' + share[1:])
else:
broken_shares.append('1' + share[1:])
return sss.reconstruct_secret(num_players, max_secret_length, broken_shares + shares[:num_broken])
def share_and_recover(num_players, reconstruction_threshold, secret, end):
max_secret_length = len(secret)
shares = sss.share_secret(num_players, reconstruction_threshold, max_secret_length, secret)
return sss.reconstruct_secret(num_players, max_secret_length, shares[:end])
def test_bad_configuration_prime_none():
num_players = 40
reconstruction_threshold = 30
with pytest.raises(ValueError):
sss.share_secret(num_players, reconstruction_threshold, 5000, secret)