def test_int_share_recover():
num_players = 5
reconstruction_threshold = 3
secret = 123456789
max_secret_length = len(str(secret))
shares = sss._share_secret_int(num_players, reconstruction_threshold, max_secret_length, secret)
recovered_secret = sss._reconstruct_secret_int(num_players, max_secret_length, shares[:reconstruction_threshold])
assert recovered_secret == secret
def _get_bytestring_secret(shares, num_players, max_secret_length):
'''
Args:
shares, a list of paired integer shares (see schemes/pairing.py)
num_players, the number of total players
max_secret_length, the max length of the share if it were represented as a bytestring
Returns:
the original secret as passed to share_authenticated_secret if all shares are valid
otherwise, no guarantees are made about the value of the bytestring returned
'''
tuple_shares = [pairing.elegant_unpair(share) for share in shares]
return serialization.convert_int_to_bytestring(sss._reconstruct_secret_int(num_players, max_secret_length + 1, tuple_shares))
